Fan operation method and electronic device

Abstract

Embodiments of the present application provide a fan operation method and an electronic device, wherein the method can be applied to an electronic device comprising a fan, and the method comprises: controlling the fan to operate at a first operating frequency; and in a case where a fluctuation range of a current value of the fan at the first operating frequency exceeds [0, a first preset threshold], the fan is adjusted from the first operating frequency to a second operating frequency. Implementing the embodiments of the present application can automatically adjust the operating frequency according to the operation, thereby improving the reliability and comfort of the electronic device.

Description

Technical Field

[0001] This application relates to the field of electrical resonance technology, and in particular to a fan operation method and electronic equipment. Background Technology

[0002] Household appliances often contain rotating components such as fans and compressors. However, during operation, these components, such as fans or compressors, can resonate with the appliance's body or other internal parts when operating at a specific frequency (known as the resonant frequency). This increases the amplitude of vibration, creating safety hazards. Furthermore, resonance can generate significant noise, severely impacting the user experience. To ensure the reliability and comfort of air conditioners, it is currently necessary to control the operation of fans and compressors to avoid the resonant frequency point.

[0003] However, currently, determining the resonant frequency of components such as fans or compressors requires additional sensors or tachometers to determine the vibration amplitude of the electrical appliance. This is costly in terms of packaging and testing, and is prone to errors. Furthermore, since some electrical appliances (such as air conditioner outdoor units) are often installed outdoors, and after prolonged use, due to unstable installation, machine aging, or external environmental factors, the resonant frequency of internal components such as fans or compressors may change. If the appliance continues to operate at the original resonant frequency, the fan or compressor cannot avoid the new resonant frequency. Moreover, after long-term operation, the sensors or testers within the appliance are prone to malfunction, leading to inaccurate determination of the new resonant frequency and ultimately causing resonance. This results in increased vibration amplitude of the outdoor unit, increased noise, and even safety hazards.

[0004] Therefore, how to autonomously adjust the operating frequency to improve the reliability and comfort of electrical appliances is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a wind turbine operation method and electronic device that can autonomously adjust the operating frequency, thereby improving the reliability and comfort of the electronic device.

[0006] In a first aspect, embodiments of this application provide a fan operation method applied to an electronic device, the electronic device including a fan; the method includes: controlling the fan to operate at a first operating frequency; when the fluctuation range of the current value of the fan at the first operating frequency exceeds [0, a first preset threshold], the fan is adjusted from the first operating frequency to a second operating frequency.

[0007] In existing technologies, additional sensors or speedometers are required to determine the vibration amplitude of electronic equipment, which is costly to package and prone to errors. Furthermore, after long-term operation, the resonant frequency of the electronic equipment is not updated in a timely manner, leading to increased vibration amplitude and noise in the outdoor unit, and even safety hazards. Therefore, this application provides a fan operation method that can autonomously control the resonant frequency without adding sensors or speedometers, improving the reliability and comfort of the appliance. Specifically, in this application embodiment, when the fan is operating normally at a first operating frequency, resonance can be determined based on the fan's current value. That is, if the fluctuation range of the current value exceeds [0, a first preset threshold], it can be determined that the fan is resonating at the first operating frequency. In this case, the fan's operating frequency can be adaptively changed to control the fan to operate at another operating frequency (i.e., a second operating frequency) to prevent further resonance. This method of determining whether the fan is resonating by detecting the stability of the current value avoids the need for additional speedometers and other devices, reducing packaging costs and improving the reliability of the determination. This fan operation mode can greatly avoid resonance after the fan has been used for a long time. Moreover, the current periodic updating of the resonance frequency cannot meet the actual use needs of electronic equipment. The embodiment of this application can adjust the resonance frequency in a timely manner, improve the reliability and comfort of electronic equipment, and avoid increased vibration amplitude, increased noise, or even safety hazards after the electronic equipment has been used for a long time.

[0008] In one possible implementation, the aforementioned first preset threshold is 6%.

[0009] In this embodiment, when the current value fluctuates within the range of [0, 6%], the fan begins to vibrate noticeably. Adjusting the fan's operating frequency at this point improves the current operating condition and the user's environment. It also avoids frequently changing the fan's operating frequency due to slight changes in the current value (e.g., the fluctuation range does not exceed [0, 6%]) during normal operation, thus preventing disruption to the normal operation of the electronic equipment. Setting the first preset threshold to 6% satisfies the usage needs of most users while also meeting the normal operating requirements of the electronic equipment.

[0010] In one possible implementation, based on the voltage value and the current value of the fan at a first operating frequency, a plurality of back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency are determined, wherein the fan generates at least two back electromotive forces in each rotation cycle; based on the plurality of back electromotive forces, a first vibration parameter corresponding to the fan at the first operating frequency is determined, wherein the first vibration parameter is the variance or standard deviation corresponding to the plurality of back electromotive forces; based on the magnitude of the first vibration parameter, it is determined whether the fluctuation range of the current value exceeds [0, a first preset threshold].

[0011] In this embodiment, multiple back electromotive forces (EMFs) can be determined within each rotation cycle (e.g., one revolution) of the fan. For example, 300 back EMFs can be determined for each revolution. Since these back EMFs are directly generated by the fan cutting the magnetic field during rotation, their magnitude reflects the speed at which the fan cuts the magnetic field. Furthermore, since the fluctuation of the back EMF is linearly correlated with the fluctuation of the current value, the back EMF can also reflect the fluctuation of the current value of the fan at the first operating frequency. Further, the back EMF can directly reflect the current real-time rotational speed of the fan within that rotation cycle, and the first vibration parameter used to indicate the fluctuation of multiple back EMFs can reflect the fluctuation of the current value of the fan at the first operating frequency, accurately characterizing the degree of vibration of the fan at the first operating frequency. Therefore, based on the magnitude of the first vibration parameter, it can be determined whether the fan is resonating, greatly improving the reliability of determining whether the fan is resonating.

[0012] In one possible implementation, if the first vibration parameter is greater than the second preset threshold, it is determined that the fluctuation range of the current value exceeds [0, the first preset threshold].

[0013] In this embodiment, the first vibration parameter is determined directly based on the multiple back electromotive forces. When the first vibration parameter is greater than the second preset threshold, it indicates that the fluctuation range between the multiple back electromotive forces is large, and it can be determined that the fluctuation range of the current value at this time exceeds [0, the first preset threshold], and the fan has resonated at the first operating frequency. When it is not greater than the second preset threshold, it indicates that the fluctuation range between the multiple back electromotive forces is small, and it can be determined that the fluctuation range of the current value at this time does not exceed [0, the first preset threshold], the fan is operating stably, and no resonance has occurred.

[0014] In one possible implementation, if the fluctuation range of the aforementioned current value exceeds [0, a first preset threshold], it is determined that the aforementioned fan is resonating and the aforementioned first operating frequency is marked as the resonant frequency.

[0015] In this embodiment of the application, when the current value fluctuates within a large range, it can be determined that the above-mentioned fan has resonated. At this time, the first operating frequency can be marked as the resonance point. For example, the type of the first operating frequency can be updated from non-resonance frequency to resonance frequency so that the fan can directly avoid the resonance point when it runs again next time, thereby reducing the frequency of fan resonance.

[0016] In one possible implementation, the aforementioned fan corresponds to multiple operating frequencies, a portion of which are the resonant frequencies and another portion are the non-resonant frequencies. The resonant frequencies are the frequencies at which resonance occurs between the aforementioned fan and other preset components in the aforementioned electronic equipment, and the non-resonant frequencies are the frequencies at which resonance does not occur between the aforementioned fan and the other preset components in the aforementioned electronic equipment. The method further includes: in the case of resonance occurring in the aforementioned fan, redetermining and updating the non-resonant frequencies and resonant frequencies among the aforementioned multiple operating frequencies.

[0017] In this embodiment, the multiple operating frequencies corresponding to the fan can be divided into: resonant frequencies that can resonate with other preset components (such as compressors, pipes, etc.) in the aforementioned electronic equipment, and non-resonant frequencies that cannot resonate with other preset components in the electronic equipment. The electronic equipment can control the fan to operate at the non-resonant frequency to ensure the smooth operation of the electronic equipment and reduce noise. When it is determined that the first vibration parameter of the electronic equipment at the current first operating frequency is greater than the second preset threshold, it can be confirmed that the first operating frequency corresponding to the fan of the electronic equipment has changed from the original non-resonant frequency to the resonant frequency. At this time, the non-resonant and resonant frequencies among the multiple operating frequencies of the fan can be reconfirmed so as to control the fan to avoid the resonant frequency and to promptly avoid the problem of excessive machine vibration and increased noise caused by long-term operation.

[0018] In one possible implementation, the above-mentioned redetermining and updating of the non-resonant and resonant frequencies among the plurality of operating frequencies includes: sequentially controlling the fan to operate at the plurality of operating frequencies, determining the vibration parameters of the fan at each of the operating frequencies; if the vibration parameters are greater than the second preset threshold, marking the operating frequency corresponding to the vibration parameters as the resonant frequency; if the vibration parameters are less than or equal to the second preset threshold, marking the operating frequency corresponding to the vibration parameters as the non-resonant frequency.

[0019] In this embodiment, the vibration can be determined sequentially according to multiple operating frequencies corresponding to the fan. When the corresponding vibration parameter is large, it indicates that the fan vibrates significantly at that operating frequency, and this operating frequency can be designated as the resonant frequency. Conversely, when the corresponding vibration parameter is small, it indicates that the fan vibrates less significantly at that operating frequency, and this operating frequency can be designated as the non-resonant frequency. This determination method is accurate and efficient, and can be adjusted promptly according to the actual operating state of the electronic equipment, improving the reliability and comfort of the electronic equipment.

[0020] In one possible implementation, the method further includes: upon determining that the wind turbine is resonating, sending a first notification message, the first notification message being used to indicate that the wind turbine is currently resonating.

[0021] In this embodiment of the application, when it is determined that the fan is resonating, a first prompt message can be sent to notify the user or other electronic devices associated with the electronic device that the fan in the electronic device is currently resonating, so that timely inspection can be carried out to eliminate potential safety hazards and improve the reliability and comfort of the electronic device.

[0022] In one possible implementation, the electronic device further includes a compressor; the method further includes: controlling the compressor to operate at a first compression frequency and controlling the fan to operate at a third operating frequency; when the fluctuation range of the current value of the fan at the third operating frequency exceeds [0, a third preset threshold], adjusting the compressor to operate at a second compression frequency from the first compression frequency.

[0023] In this embodiment, the electronic device also includes a compressor. This compressor may resonate with other components of the electronic device during operation. Therefore, after determining the non-resonance frequency of the fan, the operating state of the compressor can be further assessed to eliminate safety hazards and improve the reliability and comfort of the electronic device. Since the compressor operates by a motor compressing air to create a piston, judging the compressor's vibration level solely based on the fluctuation range of the compressor's current is not accurate enough. Furthermore, the fan vibrates less at its non-resonance frequency. Therefore, the vibration level of the fan, which is integrated with the compressor, can be used to determine whether the compressor is causing resonance in the electronic device. Specifically, the fluctuation range of the fan's current value at the aforementioned third operating frequency is used to determine whether the compressor is causing resonance in the electronic device. When the fluctuation range of the fan's current value at the third operating frequency exceeds [0, third preset threshold], it can be determined that the compressor is vibrating. At this point, the compressor can be adjusted from the aforementioned first compression frequency to the second compression frequency.

[0024] In one possible implementation, the method further includes: determining a second vibration parameter of the fan at the third operating frequency based on the voltage and current values ​​of the fan at the third operating frequency; and determining that the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold] when the second vibration parameter is greater than a fourth preset threshold.

[0025] In this embodiment, when determining whether the compressor is resonating, the electronic device can determine a second vibration parameter of the fan at the third operating frequency. This second vibration parameter can be used to characterize the vibration level of the compressor at the first compression frequency, thereby determining whether the compressor is causing the electronic device to resonate. That is, by determining the second vibration parameter of the fan at a non-resonance frequency, the vibration level of the compressor at the first compression frequency is characterized, improving the accuracy of resonance determination.

[0026] In one possible implementation, the method further includes: determining that the compressor is resonating when the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold], and marking the first compression frequency as the resonant compression frequency.

[0027] In this embodiment of the application, when it is determined that the compressor has resonated, the first compression frequency can be marked as the resonance point of the compressor. For example, the type of the first compression frequency can be updated from a non-resonance frequency to a resonance frequency so that the compressor can directly avoid the resonance point when it runs again, thereby reducing the frequency of compressor resonance.

[0028] In one possible implementation, the compressor has multiple compression frequencies, some of which are resonant compression frequencies and others are non-resonant compression frequencies. The method further includes: when it is determined that the compressor is in resonance, redetermining and updating the non-resonant compression frequencies and resonant compression frequencies among the multiple compression frequencies corresponding to the compressor.

[0029] In this embodiment, when the electronic device determines that the compressor is operating at the resonant compression frequency, it can reconfirm the non-resonant compression frequency and the resonant compression frequency among the multiple compression frequencies of the compressor, so as to control the compressor to avoid the resonant frequency and further avoid the problem of excessive machine vibration and increased noise caused by long-term operation.

[0030] In one possible implementation, the method further includes: upon determining that the compressor is resonating, sending a second notification message, the second notification message indicating that the compressor is currently resonating.

[0031] In this embodiment of the application, when it is determined that the compressor is resonating, a second prompt message can be sent to indicate that the compressor is resonating, so as to indicate that the current operating frequency of the compressor in the electronic device is a resonant compression frequency, thereby enabling timely inspection and elimination of safety hazards, and improving the reliability and comfort of the electronic device.

[0032] Secondly, embodiments of this application provide an electronic device, which includes a fan and a processor. The fan is used to be controlled by the processor to rotate. The processor is used to: control the fan to operate at a first operating frequency; and adjust the fan from the first operating frequency to a second operating frequency when the fluctuation range of the current value of the fan at the first operating frequency exceeds [0, a first preset threshold].

[0033] In one possible implementation, the aforementioned first preset threshold is 6%.

[0034] In one possible implementation, the processor is further configured to: determine, based on the voltage value and the current value of the fan at a first operating frequency, a plurality of back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency, wherein the fan generates at least two back electromotive forces in each rotation cycle; determine, based on the plurality of back electromotive forces, a first vibration parameter corresponding to the fan at the first operating frequency, wherein the first vibration parameter is the variance or standard deviation corresponding to the plurality of back electromotive forces; and determine, based on the magnitude of the first vibration parameter, whether the fluctuation range of the current value exceeds [0, a first preset threshold].

[0035] In one possible implementation, the processor is further configured to: determine that the fluctuation range of the current value exceeds [0, first preset threshold] when the first vibration parameter is greater than the second preset threshold.

[0036] In one possible implementation, the processor is further configured to: determine that the fan is resonating and mark the first operating frequency as the resonant frequency when the fluctuation range of the current value exceeds [0, a first preset threshold].

[0037] In one possible implementation, the aforementioned fan corresponds to multiple operating frequencies, a portion of which are the resonant frequencies and another portion are the non-resonant frequencies. The resonant frequencies are the frequencies at which resonance occurs between the aforementioned fan and other preset components in the aforementioned electronic equipment, and the non-resonant frequencies are the frequencies at which resonance does not occur between the aforementioned fan and the other preset components in the aforementioned electronic equipment. The processor is further configured to: in the event that the aforementioned fan resonates, redetermine the non-resonant frequencies and resonant frequencies among the aforementioned multiple operating frequencies.

[0038] In one possible implementation, the processor is specifically configured to: sequentially control the fan to operate at the plurality of operating frequencies, determine the vibration parameters of the fan at each of the operating frequencies; when the vibration parameters are greater than the second preset threshold, mark the operating frequency corresponding to the vibration parameters as a resonant frequency; when the vibration parameters are less than or equal to the second preset threshold, mark the operating frequency corresponding to the vibration parameters as a non-resonant frequency.

[0039] In one possible implementation, the electronic device further includes a communication module; the communication module is used to send a first prompt message when it is determined that the wind turbine is resonating, the first prompt message being used to indicate that the wind turbine is currently resonating.

[0040] In one possible implementation, the electronic device further includes a compressor; the processor is also configured to: control the compressor to operate at a first compression frequency and control the fan to operate at a third operating frequency; and adjust the compressor from the first compression frequency to a second compression frequency if the fluctuation range of the current value of the fan at the third operating frequency exceeds [0, a third preset threshold].

[0041] In one possible implementation, the processor is further configured to: determine a second vibration parameter of the fan at the third operating frequency based on the voltage and current values ​​of the fan at the third operating frequency; and determine that the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold] if the second vibration parameter is greater than a fourth preset threshold.

[0042] In one possible implementation, the processor is further configured to: determine that the compressor is resonating when the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold], and mark the first compression frequency as the resonant compression frequency.

[0043] In one possible implementation, the compressor has multiple compression frequencies, some of which are resonant compression frequencies and others are non-resonant compression frequencies; the processor is further configured to: when it is determined that the compressor is in resonance, redetermine and update the non-resonant compression frequencies and resonant compression frequencies among the multiple compression frequencies corresponding to the compressor.

[0044] In one possible implementation, the communication module is further configured to: upon determining that the compressor is resonating, send a second notification message, the second notification message being used to indicate that the compressor is currently resonating.

[0045] Thirdly, according to an embodiment of this application, a computer-readable storage medium stores a computer program that, when executed by a processor, implements the method provided in the first aspect.

[0046] Fourthly, embodiments of this application provide a computer program product, the computer program including instructions that, when executed by a computer, cause the computer to perform the method provided in the first aspect.

[0047] It should be understood that the electronic equipment provided in the second aspect of this application, the computer-readable storage medium provided in the third aspect, and the computer program product provided in the fourth aspect are consistent with the technical solution of the first aspect of this application. Their specific contents and beneficial effects can be referred to the wind turbine operation method provided in the first aspect above, and will not be repeated here. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application or the background art will be described below.

[0049] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0050] Figure 2A This is a schematic flowchart of a wind turbine operation method provided in an embodiment of this application.

[0051] Figure 2B This is a schematic flowchart of a method for determining whether resonance has occurred, provided in an embodiment of this application.

[0052] Figure 3 This is a schematic diagram illustrating the determination of back electromotive force according to an embodiment of this application.

[0053] Figure 4 This is a schematic diagram of a process for redetermining non-resonant and resonant frequencies provided in an embodiment of this application.

[0054] Figure 5 This is a flowchart illustrating another wind turbine operation method provided in an embodiment of this application.

[0055] Figure 6 This is a schematic diagram of another process for redetermining the non-resonant frequency and the resonant frequency provided in an embodiment of this application. Detailed Implementation

[0056] The embodiments of this application will now be described with reference to the accompanying drawings.

[0057] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus.

[0058] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0059] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0060] As used in this specification, the terms "component," "module," "system," etc., are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. As illustrated, applications running on computing devices and computing devices can both be components. One or more components may reside in a process and / or an execution thread, and components may be located on a single computer and / or distributed among two or more computers. Furthermore, these components can be executed from various computer-readable media on which various data structures are stored. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0061] First, to facilitate understanding of the embodiments of this application, the following detailed analysis addresses the technical problems to be solved and the applicable application scenarios of the embodiments of this application.

[0062] With the development of technology, users have increasingly higher requirements for their living environment, and home appliances have gradually become an integral part of people's lives. Currently, many home appliances are equipped with permanent magnet synchronous motors, such as fans and compressors. During operation, when these appliances, such as fans or compressors, reach a specific frequency (which can be called the resonant frequency), they can resonate with the appliance's body or other components within it. This increases the amplitude of vibration, creating safety hazards. Furthermore, resonance can also cause significant noise, severely impacting the user experience.

[0063] For example, current air conditioning systems are often divided into indoor and outdoor units. The outdoor unit contains the main equipment for regulating the indoor temperature, namely the fan and compressor. During the operation of the outdoor unit, resonance can occur when the fan or compressor reaches its resonant frequency. This increases the amplitude of vibration and generates significant noise, severely impacting the user experience and posing a safety hazard.

[0064] Currently, determining the resonant frequency of a fan or compressor often requires additional sensors or tachometers to measure the vibration amplitude of the appliance. This process is costly in terms of packaging and testing, and prone to errors. Furthermore, after prolonged use, the resonant frequency of the fan or compressor can change due to factors such as the installation environment, machine aging, or external interference. For example, current air conditioner outdoor units are frequently installed outdoors, where the installation environment and external interference are highly complex, causing the resonant frequency of the fan or compressor to change rapidly. If the original resonant frequency is not avoided, the fan or compressor cannot avoid operating at the new resonant frequency, leading to resonance. Moreover, after long-term operation, the additional sensors or testers in the appliance are prone to malfunction, resulting in inaccurate determination of the new resonant frequency and ultimately causing resonance. This increases the vibration amplitude of the outdoor unit, increases noise, and in severe cases, may even cause the outdoor unit to detach, resulting in personal injury, safety hazards, and severely impacting the user experience.

[0065] Since the fan achieves heat exchange through a permanent magnet synchronous motor, it generates a back electromotive force (EMF) during normal operation. Therefore, changes in this back EMF can effectively reflect the fan's operating status. This application provides a fan operation method that, without adding extra sensors or testers, utilizes existing modules (such as sampling modules) to determine changes in the back EMF, thereby directly determining the vibration level of the electrical appliance. This significantly reduces packaging and testing costs and minimizes errors. For example, this application directly determines a first vibration parameter based on the multiple back EMFs to characterize the fan's vibration level at a first operating frequency. Then, based on this first vibration parameter, it is determined whether the fan resonates with other components of the electronic device. When the first vibration parameter exceeds a second preset threshold, it can be determined that the fan has resonated at the first operating frequency. In this case, the type of the first operating frequency can be marked as a resonant frequency instead of a non-resonant frequency, and the fan can be controlled to operate at other non-resonant frequencies. This fan operation method can promptly prevent resonance after prolonged use. Periodic resonant frequency updates are insufficient; the ability to autonomously adjust the resonance frequency improves electrical reliability and comfort, preventing increased vibration amplitude and noise in electronic equipment, and even avoiding safety hazards. The specific structural configuration of this fan operation method and electronic equipment can be further described in the following embodiments.

[0066] Secondly, based on the technical problems mentioned above, and in order to facilitate understanding of the embodiments of this application, the specific structural settings of the electronic device on which the embodiments of this application are based will be described below.

[0067] Please refer to the attached document. Figure 1 , Figure 1This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0068] The electronic devices mentioned in this application and the following related embodiments may be devices that include a fan, which may include a permanent magnet synchronous motor. For example, the electronic devices may be intelligent fans, outdoor units of air conditioners in air conditioning systems, etc., and this application does not impose specific limitations on them.

[0069] like Figure 1 As shown, the electronic device may include a processor 101 and a fan 102, and may also include a sampling module 103, a compressor 104, and a communication module 105, etc. The processor 101 may also include a back EMF observer, and the sampling module 103 may also include a voltage sampling module 1031 and a current sampling module 1032, etc. In some embodiments, it may also include a memory 106 or a driver 107, etc.

[0070] It is understood that the structures illustrated in the embodiments of this application do not constitute a specific limitation on the electronic device. In other embodiments of this application, the electronic device may include more or fewer components than illustrated, or combine some components, or split some components, or arrange different components. For example, the electronic device may also include temperature sensors, sensor interfaces, etc., which are not specifically limited in the embodiments of this application. In addition, the components illustrated may be implemented in hardware, software, or a combination of software and hardware.

[0071] The processor 101 can perform calculations by comprehensively utilizing control commands, temperature information, current or voltage information, etc., to control the normal operation of the fan 102 in the electronic device. The processor 101 can also be referred to as a controller, processing unit, control unit, etc., and this embodiment of the application does not specifically limit it in this way.

[0072] In some embodiments, the processor 101 can be used to control the fan to operate at a first operating frequency; if the fluctuation range of the current value of the fan at the first operating frequency exceeds [0, a first preset threshold], the fan is adjusted from the first operating frequency to the second operating frequency.

[0073] In some embodiments, the processor 101 is further configured to: determine, based on the voltage and current values ​​of the fan at a first operating frequency, a plurality of back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency, wherein the fan generates at least two back electromotive forces in each rotation cycle; determine, based on the plurality of back electromotive forces, a first vibration parameter corresponding to the fan at the first operating frequency, wherein the first vibration parameter is the variance or standard deviation corresponding to the plurality of back electromotive forces; and determine, based on the magnitude of the first vibration parameter, whether the fluctuation range of the current value exceeds [0, a first preset threshold].

[0074] In some embodiments, the processor 101 is further configured to: determine that the fan is resonating and mark the first operating frequency as the resonant frequency when the fluctuation range of the current value exceeds [0, a first preset threshold].

[0075] In other embodiments, the processor 101 may also be used to: continue to control the fan to operate at a first operating frequency if it is determined that the fan has not resonated.

[0076] In other embodiments, the electronic device further includes a compressor; the processor 101 is also configured to: control the compressor to operate at a first compression frequency and control the fan to operate at a third operating frequency; and adjust the compressor from the first compression frequency to a second compression frequency if the fluctuation range of the current value of the fan at the third operating frequency exceeds [0, a third preset threshold].

[0077] In some embodiments, the processor 101 is further configured to: determine a second vibration parameter corresponding to the third operating frequency of the fan based on the voltage and current values ​​of the fan at the third operating frequency; and determine that the fluctuation range of the current value at the third operating frequency exceeds [0, the third preset threshold] if the second vibration parameter is greater than a fourth preset threshold.

[0078] In one possible implementation, the processor 101 is also configured to: determine that the compressor is resonating when the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold], and mark the first compression frequency as the resonant compression frequency.

[0079] In some embodiments, the processor 101 can acquire the voltage and current values ​​of the wind turbine at a first operating frequency; and calculate the back electromotive force corresponding to at least two rotation angles of the wind turbine in each rotation cycle based on the voltage and current values ​​using a back electromotive force observer.

[0080] It should be noted that the back EMF observer can be viewed as an abstraction of the hardware and / or software capabilities within the processor for determining whether a wind turbine is resonating based on multiple back EMFs. In this regard, the embodiments of this application do not impose specific limitations.

[0081] It should also be noted that the specific fan operation mode of the processor can be referred to the description of the following method embodiments, and will not be repeated here in the embodiments of this application.

[0082] The fan 102 may include a permanent magnet synchronous motor and fan blades. The fan 102 can be controlled by the processor 101, thereby enabling the permanent magnet synchronous motor to drive the fan blades to rotate. It should be noted that the fan 102 can operate at multiple different frequencies, which correspond to the operating speed of the permanent magnet synchronous motor, such as 800 revolutions per minute. Furthermore, the processor can adjust the speed of the permanent magnet synchronous motor by adjusting the power supply frequency and controlling the motor current, effectively regulating the operating frequency of the fan 102.

[0083] In some embodiments, the fan 102 has multiple operating frequencies. Among these multiple operating frequencies, some are resonant frequencies and others are non-resonant frequencies. The resonant frequency can be understood as the operating frequency at which the fan 102 resonates with other preset components in the electronic device (e.g., compressor, pipe, housing, etc.). The non-resonant frequency can be understood as the operating frequency at which the fan does not resonate with other preset components in the electronic device.

[0084] In other embodiments, after the fan 102 is installed in different electronic devices, different working requirements can correspond to different operating frequency ranges. Therefore, the multiple operating frequencies that the fan 102 can correspond to can also be determined according to the type or working mode of the electronic devices, etc. This application embodiment does not make specific limitations.

[0085] In some embodiments, the processor 101 is further configured to: redetermine and update the non-resonance frequency and resonance frequency among the plurality of operating frequencies when the first vibration parameter is greater than the second preset threshold.

[0086] In some embodiments, the processor 101 is specifically configured to: sequentially control the fan to operate at the plurality of operating frequencies, determine the vibration parameters of the fan at each of the operating frequencies; when the vibration parameters are greater than the second preset threshold, mark the operating frequency corresponding to the vibration parameters as a resonant frequency; when the vibration parameters are less than or equal to the second preset threshold, mark the operating frequency corresponding to the vibration parameters as a non-resonant frequency.

[0087] The sampling module 103 can be used to acquire the voltage and current values ​​of the wind turbine at different operating frequencies. The sampling module 103 may further include a voltage sampling module 1031 and a current sampling module 1032, etc.

[0088] The voltage sampling module 1031 can be used to directly obtain the voltage corresponding to the operation of the wind turbine based on the voltage command output by the processor, and can also collect the voltage of the wind turbine during operation. This application embodiment does not specifically limit this. The current sampling module 1032 can collect the three-phase current corresponding to the operation of the wind turbine and send it to the processor; after obtaining the current value, the processor can determine whether the wind turbine is resonating based on the fluctuation range of the current value.

[0089] In addition, after obtaining the voltage and current values, the sampling module 103 can also send the voltage and current values ​​to the back EMF observer in the processor so that the back EMF observer can calculate the back EMF corresponding to at least two rotation angles of the wind turbine in each of the above rotation cycles based on the voltage and current values.

[0090] In other embodiments, the sampling module 103 is further specifically used to sample the voltage and current values ​​of the fan at a first operating frequency when the compressor 104 stops operating. The description of how the processor's back EMF observer determines the back EMF based on the voltage and current values ​​can be found in the following method embodiment's description of step S102, which will not be repeated here.

[0091] The compressor 104 may include a permanent magnet synchronous motor and a piston. For example, the compressor 104 may be controlled by the processor 101 to draw in low-temperature and low-pressure refrigerant gas from the suction pipe, compress it by driving the piston through the operation of the permanent magnet synchronous motor, and discharge high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle.

[0092] It should be noted that the compressor 104 has multiple compression frequencies, some of which are resonant compression frequencies, and others are non-resonant compression frequencies. The resonant compression frequency can be understood as the compression frequency at which the compressor 104 resonates with other preset components in the electronic equipment (e.g., fans, pipes, housings, etc.), while the non-resonant compression frequency can be understood as the compression frequency at which the compressor does not resonate with other preset components in the electronic equipment. This compression frequency can be understood as the frequency at which the permanent magnet synchronous motor drives the piston to perform piston-like motion. Furthermore, the processor can adjust the compressor's corresponding compression frequency by adjusting the power supply frequency of the permanent magnet synchronous motor and controlling the motor's current.

[0093] In other embodiments, the processor is further configured to: if it is determined that the compressor is resonating, redetermine and update the non-resonant compression frequency and the resonant compression frequency among a plurality of compression frequencies corresponding to the compressor.

[0094] It is understandable that, similar to the fan, after the compressor 104 is installed in different electronic devices, different operating requirements can correspond to different compression frequency ranges. Therefore, the multiple compression frequencies that the compressor 104 can correspond to can also be determined according to the type or operating mode of the electronic devices, etc., and this application embodiment does not make specific limitations. In addition, the compression frequency can be understood as the operating frequency of the compressor when it is working.

[0095] The communication module 105 can be a wireless or wired communication module, used to send alert messages, such as a first alert message and a second alert message, to notify the user or other electronic devices associated with the electronic device that a resonance phenomenon or other possible information has occurred. This allows the user or maintenance personnel to promptly inspect and eliminate potential safety hazards, thereby improving the reliability and user experience of the electronic device.

[0096] The memory 106 enables the storage capabilities of the electronic device. For example, it can be used to store executable program code, which includes instructions. The processor 101 executes various functional applications and data processing of the electronic device by running the instructions stored in the memory 106. The memory 106 may include a program storage area and a data storage area. The program storage area can store the control system, and the data storage area can store data created or used during the use of the electronic device. For example, in this embodiment, it can store multiple operating frequencies corresponding to a fan, multiple compression frequencies corresponding to a compressor, a second preset threshold, a fourth preset threshold, a first vibration parameter, or a second vibration parameter. Furthermore, the memory 106 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc. This embodiment does not specifically limit the specific types of memory used in this application.

[0097] The driver 107 can receive control commands (such as voltage commands) sent by the processor 101 to drive the fan 102 or the compressor 104 to operate.

[0098] The electronic device mentioned in this application embodiment can autonomously monitor and adjust its resonant frequency, improving the reliability and comfort of the electronic device and avoiding increased vibration amplitude, noise, or even safety hazards. The implementation methods of each functional module in this electronic device can be referred to the description of the method embodiments below, and will not be repeated here.

[0099] The technical problems raised in the above embodiments will be specifically analyzed and solved below, taking into account the electronic equipment and the fan operation method provided in this application.

[0100] Please see Figure 2A , Figure 2A This is a flowchart illustrating a fan operation method provided in an embodiment of this application. This fan operation method can be applied to the above-mentioned... Figure 1 The electronic device shown may include a processor and a fan. The processor can control the fan to rotate and can implement the fan's operation. The following will refer to the attached diagram. Figure 2A Described from the perspective of a processor in an electronic device, the method may include the following steps S101-S104.

[0101] Step S101: Control the fan to operate at the first operating frequency.

[0102] Specifically, the processor can control the fan to operate at a first operating frequency, which is a pre-set non-resonant frequency corresponding to the fan.

[0103] In some embodiments, the aforementioned fan corresponds to multiple operating frequencies. A portion of these operating frequencies are resonant frequencies, and another portion are non-resonant frequencies. The resonant frequencies are those that generate resonance between the fan and other preset components in the electronic device, while the non-resonant frequencies are those that do not generate resonance between the fan and the other preset components in the electronic device. For example, the other preset components in the electronic device may refer to components encapsulated with the fan within the electronic device. For instance, when the electronic device is an outdoor unit of an air conditioner, these other preset components may be a compressor, outdoor unit housing, outdoor unit intake pipe, or outdoor unit exhaust pipe, etc. The types of other preset components vary depending on the type of electronic device. Furthermore, these multiple operating frequencies may be inherent operating frequencies of the fan, which can vary depending on the type of electronic device installed. This application does not specifically limit this.

[0104] Understandably, the resonant frequency can also be called the resonant point, which is the frequency at which the wind turbine will resonate with other pre-set components when it is operating normally at that frequency.

[0105] Step S102: If the fluctuation range of the current value of the fan at the first operating frequency exceeds [0, first preset threshold], the fan is adjusted from the first operating frequency to the second operating frequency.

[0106] Specifically, when the fan is operating normally at the first operating frequency, the processor can determine whether the fan is resonating based on the fluctuation range of the fan's current value. When the current value changes abruptly and the fluctuation range exceeds a certain range, it can be confirmed that the fan is resonating with other preset components of the electronic equipment. Therefore, the current value of the fan at the first operating frequency can be obtained, processed, and calculated, and the fluctuation range can be used to determine whether the fan is resonating.

[0107] For example, the processor can acquire multiple current values ​​generated by the fan within at least one rotation cycle at a first operating frequency. When the fluctuation range between these multiple current values ​​exceeds [0, first preset threshold], for example, taking the first preset threshold as 6%, if the fluctuation is 10%, exceeding 6%, it can be considered that the fluctuation of the fan current value at the first operating frequency exceeds the range [0, first preset threshold], and the fan has resonated at the first operating frequency. After confirming the resonance, to improve the operation of the fan, the fan frequency can be adjusted, that is, the fan can be controlled to operate from the first operating frequency to the second operating frequency. Moreover, since the current value can be directly acquired through the existing sampler, it is possible to avoid adding devices such as speed measuring instruments, reducing packaging costs and improving the reliability of the judgment.

[0108] In addition, it is understood that the fluctuation range of the current value of the fan at the first operating frequency refers to the fluctuation range between multiple current values ​​obtained in at least one rotation cycle when the fan is running at the first operating frequency, or between multiple current values ​​obtained relative to the current value of the preset stable operation. The embodiments of this application do not specifically limit the number of current values ​​obtained or the specific number of rotation cycles.

[0109] It can also be understood that the fluctuation range of [0, first preset threshold] means that the fluctuation of the current value is greater than or equal to 0 and less than or equal to the first preset threshold; the fluctuation range exceeding [0, first preset threshold] means that the fluctuation range includes currents with fluctuations greater than the first preset threshold.

[0110] In some embodiments, the first preset threshold is 6%. For example, a fluctuation range of [0, 6%] means that the fluctuation of the current value is greater than or equal to 0 and less than or equal to 6%; a fluctuation range exceeding [0, 6%] means that the fluctuation of the current value is greater than 6%. For instance: when the current value fluctuation is within [0, 5%], the fluctuation range of [0, 5%] does not exceed [0, 6%]; when the current value fluctuation is within [0, 7%], since the maximum fluctuation of 7% exceeds [0, 6%], a fluctuation range of [0, 7%] is considered to exceed [0, 6%]; when the current value fluctuation is within [7%, 10%], since the minimum fluctuation of 7% exceeds [0, 6%], a fluctuation range of [7%, 10%] is considered to exceed [0, 6%].

[0111] In this application embodiment, current was collected and relevant test data were obtained for the electronic device fan under different vibration levels.

[0112] Please refer to Table 1, which is a schematic table of multiple sets of current values ​​provided in the embodiments of this application.

[0113] Table 1

[0114]

[0115]

[0116] As shown in Table 1 above, when the fan is running smoothly at the corresponding operating frequency, the initial current data corresponding to current value 1 in Table 1 is obtained. Then, the fan continues to run at the above operating frequency, and the vibration level of the fan is gradually increased by changing the placement of electronic equipment, loosening screws, or other methods, and two sets of current values ​​are obtained under different vibration levels.

[0117] Among them, when the screws were slightly loosened or the placement method was slightly changed, the current amplitude obtained by sampling was a set of currents corresponding to current value 2 in Table 1. No obvious vibration phenomenon was observed and the vibration noise was small. When the screws were loosened or the placement was unstable, the current amplitude obtained by sampling was a set of currents corresponding to current value 3 in Table 1. At this time, the fan vibration was more obvious, and the vibration noise was larger and the vibration phenomenon could be clearly observed.

[0118] Based on the aforementioned test data, it can be observed that as the vibration amplitude increases, the fluctuation range of the current value also gradually increases, indicating a positive correlation between the two. For example, it can be clearly determined that when the fluctuation of the current value exceeds the fluctuation range of [0, 6%], the vibration of the fan operation is quite noticeable. When the fluctuation of the current value does not exceed 6%, that is, when the fluctuation range of the current value does not exceed [0, 6%], such as when the current fluctuation is around 3%, no significant vibration occurs during fan operation.

[0119] It is understandable that although the test data shown in Table 1 above are all above 6.5 or other values, considering the influence of factors such as measurement margin and tolerance error, this embodiment sets the first preset threshold to 6%, which can meet the usage needs of most users of electronic devices. Relevant test data shows that when the current value fluctuates above 6%, the fan begins to vibrate noticeably and generate noise. At this time, adjusting the fan's operating frequency can improve the current operating state and the user's environment; it also avoids frequently changing the fan's operating frequency due to slight changes in the current value during normal operation, thus preventing disruption to the normal operation of the electronic device.

[0120] It should be noted that the first preset threshold can also be determined based on the installation environment and user needs. Specifically, a larger first preset threshold results in a larger lower limit for the fan vibration amplitude and noise level at the resonant frequency; conversely, a smaller first preset threshold results in a smaller lower limit for the fan vibration amplitude and noise level at the resonant frequency. Therefore, the first preset threshold can also be set according to user requirements. Furthermore, the first preset threshold can be dynamically adjusted, for example, it can be gradually updated based on the usage time of the electronic device. This embodiment of the application does not specifically limit this adjustment.

[0121] Understandably, the fan operates at the corresponding first operating frequency based on the voltage and current values ​​in the voltage and current commands. When the current value changes, the fan speed (i.e., the operating frequency) will change accordingly. Since the back electromotive force (EMF) is directly generated when the fan rotates and cuts the magnetic field, the magnitude of the back EMF can reflect the speed at which the fan cuts the magnetic field during rotation. In other words, the back EMF can directly reflect the fan's current real-time speed within that rotation cycle. Moreover, the fluctuation range of the back EMF is linearly related to the fluctuation range of the current value. Therefore, the back EMF can also reflect the actual fluctuation of the current value of the fan at the first operating frequency. In other words, the fluctuation of these multiple back EMFs truly reflects the actual fluctuation of the current value, and thus can reflect the current rotation and vibration of the fan.

[0122] Therefore, based on the description of step S102 above, please also refer to... Figure 2B , Figure 2B This is a schematic flowchart illustrating a method for determining whether resonance has occurred, provided in an embodiment of this application. Figure 2B As shown:

[0123] Step S201: Based on the voltage and current values ​​of the fan at the first operating frequency, determine the multiple back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency.

[0124] Specifically, the processor can further determine, based on the voltage and current values, multiple back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency. The fan generates at least two back electromotive forces in each rotation cycle. The first operating frequency is a pre-set non-resonant frequency corresponding to the fan.

[0125] Here, the rotation cycle refers to the time it takes for the fan to complete one revolution. When the processor controls the fan to operate at a first operating frequency, after controlling the fan to rotate for at least one rotation cycle, it determines at least two back electromotive forces (EMFs) generated in each rotation cycle. For example, when the fan operates at a frequency of 800 revolutions per minute, the processor can determine 720 back EMFs generated within two rotation cycles, of which 360 back EMFs can be determined within each rotation cycle. Since the fan generates back EMFs by cutting the magnetic field during rotation, the processor can determine multiple back EMFs within each rotation cycle based on the rotation angle. For example, one back EMF can be determined for every 1 degree of rotation; one back EMF can be determined for every 5 degrees of rotation; or multiple back EMFs can be randomly determined when rotating 360 degrees. This application does not specifically limit the specific determination of these back EMFs.

[0126] It should be noted that determining the real-time rotational speed of the wind turbine within at least one rotational cycle at the first operating frequency can achieve the same technical effect as determining multiple back electromotive forces. However, based on voltage and current values, determining the back electromotive force does not require the addition of additional sensors or speed measuring devices, avoiding errors that may occur after long-term use of sensors or testers, thus making the confirmation of the resonant frequency more accurate.

[0127] In some embodiments, the electronic device further includes a compressor, and determining the multiple back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency based on the voltage value and the current value includes: acquiring the voltage value and current value of the fan at the first operating frequency when the compressor stops operating; determining the multiple back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency based on the voltage value and the current value includes: calculating the back electromotive forces corresponding to at least two rotation angles of the fan in each rotation cycle based on the voltage value and the current value.

[0128] It is understandable that the back electromotive force (EMF) is generated when the fan cuts through the magnetic field during rotation. Therefore, based on the voltage and current values ​​of the fan at its operating frequency, the back EMF corresponding to different rotation angles during the rotation process can be accurately calculated, greatly improving the accuracy of the judgment and reducing errors. Furthermore, the electronic equipment also includes a compressor. Since the compressor also generates vibrations during operation, it can affect the confirmation of the actual operating status of the fan. Therefore, when the compressor stops running (e.g., before it starts running or when it is paused), the voltage and current values ​​of the fan at the first operating frequency can be obtained in a timely manner to reduce the influence of other components on the judgment of the fan's operating status and improve the reliability of resonance control during fan operation.

[0129] Please refer to the appendix. Figure 3 , Figure 3This is a schematic diagram illustrating the determination of back electromotive force according to an embodiment of this application. For example... Figure 3 As shown, the processor can control the operation of the fan and acquire the back electromotive force based on control commands (such as the speed command or operating frequency command shown in the figure). Specifically, the processor can perform speed control and current planning for the fan based on the aforementioned speed command, determining the current command; and perform current control based on this current command. Furthermore, it can perform coordinate transformation through vector transformation processing, for example, decomposing the current into a stator current excitation component in the same direction as the rotor flux linkage and a stator current torque component orthogonal to the flux linkage direction. After coordinate transformation, the motor can be driven to rotate after modulation based on the voltage command.

[0130] like Figure 3 As shown, this back EMF observer can provide real-time feedback on the motor's operating status (such as angle and speed) based on a back EMF estimation algorithm and angle and speed estimation algorithms. The back EMF estimation algorithm outputs the current back EMF based on input three-phase current and voltage commands. The angle and speed estimation algorithms extract angle and speed estimates from the received back EMF through processing and calculation, providing feedback so that the processor can adjust the motor's operating state accordingly. In this embodiment, the back EMF output by the back EMF estimation algorithm can be directly obtained using the processor's current processing architecture.

[0131] For the back electromotive force estimation algorithm, please refer to the following formula:

[0132] Among them, u α and u β The excitation voltage applied to the motor in different directions; i α and i β For its corresponding feedback current, R s L is the stator resistance of the motor. d and L q These are the d-axis and q-axis inductances, respectively, where s is the Laplace operator and w is the inductance. e e represents the rotational speed. α and e β This is the back electromotive force we are looking for.

[0133] For the above state equation, the back electromotive force can be estimated based on a sliding mode function, that is, the back electromotive force estimate of the sliding mode function can be used to replace the actual motional electromotive force. If the estimated current determined by the above state equation and the back electromotive force estimate in this way is equal to the actual sampled current, then the back electromotive force estimate is equal to the actual motor back electromotive force.

[0134] Therefore, based on the above formula, we can obtain: Parameters marked with a superscript ^ can be understood as estimated values. For example: For i α The estimated value.

[0135] The final calculation yields the real-time back electromotive force during motor operation as follows: Where K is the estimated value of the back EMF obtained by the sliding mode function. Furthermore, this estimated value can be filtered by a low-pass filter to make the obtained back EMF smoother, thus more accurately reflecting the real-time rotational speed. The specific estimation algorithm described in this application will not be elaborated upon here.

[0136] In this embodiment, the back electromotive force (EMF) can be calculated once every 1° (or other specified degree, or random degree) of rotor rotation, thus obtaining the back EMF corresponding to at least two rotation angles within at least one rotation cycle. Since the back EMF is directly generated by the fan cutting the magnetic field during rotation, this embodiment can accurately calculate the back EMF corresponding to different rotation angles during the rotation process based on the current and voltage during fan rotation, greatly improving the accuracy of judgment and reducing errors.

[0137] In addition, electronic devices may also include compressors. Since compressors also generate vibrations during operation, which can affect the confirmation of the actual operation of the fan, the voltage and current values ​​of the fan at the first operating frequency can be obtained in a timely manner when the compressor stops running (such as before it has started or when it has stopped running) to reduce the influence of other components on the judgment of the fan's operating status and improve the reliability of the fan's operation.

[0138] In other embodiments, in order not to affect the normal operation of electronic equipment, multiple back electromotive forces of the fan can be determined when the compressor is running normally or at any non-compression frequency. In this regard, the embodiments of this application do not make specific limitations.

[0139] Step S202: Determine the first vibration parameter corresponding to the wind turbine based on multiple back electromotive forces.

[0140] Specifically, after acquiring multiple back EMFs, the processor can calculate and determine the first vibration parameter based on these multiple back EMFs. The first vibration parameter can indicate the fluctuation of the multiple back EMFs, thereby accurately characterizing the vibration degree of the wind turbine at the first operating frequency.

[0141] For example, the first vibration parameter mentioned above can be the variance or standard deviation corresponding to the multiple back electromotive forces. The variance or standard deviation can accurately reflect the fluctuation of the multiple back electromotive forces, and thus accurately reflect the current rotation of the fan, greatly improving the reliability of determining whether the fan is resonating.

[0142] Step S203: Based on the magnitude of the first vibration parameter, determine whether the fluctuation range of the current value exceeds [0, first preset threshold].

[0143] Specifically, the processor can determine whether the fluctuation range of the current value exceeds [0, first preset threshold] based on the magnitude of the first vibration parameter. For example, after obtaining 300 back electromotive forces at the first operating frequency, if the fluctuation of these 300 back electromotive forces is small (i.e., the variance or standard deviation is small), it indicates that the fan's rotation speed is uniform and stable, the vibration amplitude is small, and the corresponding fluctuation range of the current value does not exceed [0, first preset threshold]. If the fluctuation of these 300 back electromotive forces is large (i.e., the variance or standard deviation is large), it indicates that the fan's rotation speed varies greatly and is uneven, the vibration amplitude is large, and the corresponding fluctuation of the current value will exceed the first preset threshold. Therefore, the magnitude of the variance or standard deviation can accurately reflect both the fluctuation of the multiple back electromotive forces and the fluctuation of the current value, as well as the current rotation status of the fan. Furthermore, based on the magnitude of the first vibration parameter, it can determine whether the fluctuation range of the current value exceeds [0, first preset threshold], further improving the reliability of determining whether the fan is resonating. This directly avoids the need to install additional sensors to determine the fan speed, reduces speed measurement errors after long-term use, and also reduces packaging costs and improves the reliability of speed measurement.

[0144] In some embodiments, after determining the first vibration parameter corresponding to the wind turbine at the first operating frequency, the processor can compare the first vibration parameter with a second preset threshold. If the first vibration parameter is greater than the second preset threshold, it indicates that the fluctuation of the multiple back electromotive forces is large, thus determining that the fluctuation of the current value exceeds the first preset threshold, and the fluctuation range of the current value correspondingly exceeds [0, first preset threshold]. Therefore, it can be determined that the wind turbine is in a resonance state during operation at the first operating frequency. If the first vibration parameter is less than or equal to the second preset threshold, it indicates that the fluctuation range of the multiple back electromotive forces is small, thus determining that the fluctuation range of the current value does not exceed [0, first preset threshold]. Therefore, it can be determined that the wind turbine has not resonated during operation at the first operating frequency and is in a normal, stable operating state.

[0145] In some embodiments, the fluctuation of the back electromotive force is linearly correlated with the fluctuation of the current value, and the second preset threshold can be the parameter size corresponding to a fluctuation of 6%, depending on the type of the first vibration parameter. For example, when the first vibration parameter is variance, the second preset threshold can be the variance size corresponding to multiple back electromotive force fluctuations of 6%; when the first vibration parameter is standard deviation, the second preset threshold can be the standard deviation size corresponding to multiple back electromotive force fluctuations of 6%. This application does not specifically limit this.

[0146] It should also be noted that the second preset threshold can be pre-set or gradually updated according to the service life of the electronic equipment. Specifically, a larger second preset threshold results in a larger lower limit for the fan vibration amplitude and noise level at the resonant frequency; conversely, a smaller second preset threshold results in a smaller lower limit for the fan vibration amplitude and noise level at the resonant frequency. Therefore, this second preset threshold can also be determined based on the installation environment and user requirements.

[0147] In addition, the second preset threshold can also be the historical vibration parameter corresponding to each operating frequency at the factory. For example, when the first vibration parameter is greater than the second preset threshold, it is equivalent to the current vibration level of the fan at the first operating frequency being greater than the historical vibration level of the fan at the first operating frequency. This can be considered as the fan resonating after a long period of operation, allowing users or maintenance personnel to perform timely maintenance and repairs, thereby improving the reliability and comfort of using electronic equipment. This application embodiment does not specifically limit the specific setting method of the second preset threshold and the fourth preset threshold mentioned below.

[0148] The above description of step S102 is only one possible implementation method provided by the embodiments of this application, and the embodiments of this application do not make specific limitations on it.

[0149] In some embodiments, as described above Figure 2A As shown, the method further includes:

[0150] Step S103: If the fluctuation range of the current value exceeds [0, first preset threshold], determine that the fan is resonating and mark the first operating frequency as the resonant frequency.

[0151] Specifically, the aforementioned fan has multiple operating frequencies. A portion of these frequencies are resonant frequencies, and another portion are non-resonant frequencies. The resonant frequencies are those where resonance occurs between the fan and other preset components in the electronic equipment (such as compressors and pipes). The non-resonant frequencies are those where no resonance occurs between the fan and these other preset components. Therefore, when the current fluctuation exceeds [0, a first preset threshold], the processor can determine that the fan is resonating. At this point, the type of the first operating frequency can be updated from the previously preset non-resonant frequency to the resonant frequency. This method of updating the operating frequency type after resonance occurs allows for timely marking of the resonant operating frequencies during fan operation, facilitating the fan's ability to avoid resonant frequencies during subsequent operation.

[0152] The processor in this embodiment can autonomously update the operating frequency in a timely manner, which can improve the reliability and comfort of electronic devices, avoid increased vibration amplitude and noise, and even prevent safety hazards. Currently, operating frequencies that are not updated for extended periods or are only updated periodically cannot adequately meet the needs of electronic devices. By updating the operating frequency promptly after each resonance, the fan can avoid operating at the first resonant frequency during its next startup, significantly reducing the frequency of resonant events and extending the fan's lifespan.

[0153] Step S104: If it is determined that the wind turbine is in resonance, redetermine and update the non-resonant frequency and resonant frequency among multiple operating frequencies.

[0154] Specifically, when it is determined that the fan is resonating, the processor can redetermine and update the non-resonant and resonant frequencies among multiple operating frequencies, so as to prevent the fan from resonating after the electronic equipment has been used for a long time and still running at the pre-set non-resonant frequency, so as to eliminate potential safety hazards in time.

[0155] Specifically, when the fluctuation range of the current value at the first operating frequency exceeds [0, first preset threshold], it can be confirmed that the first operating frequency corresponding to the fan of the electronic device has changed from the original non-resonant frequency to the resonant frequency. At this time, the non-resonant and resonant frequencies among the multiple operating frequencies of the fan can be reconfirmed to control the fan to avoid the resonant frequency. Moreover, it can promptly avoid problems such as excessive machine vibration and increased noise caused by long-term operation. Furthermore, timely updating the type of fan operating frequency allows the fan to directly avoid the first operating frequency during the next startup, greatly reducing the frequency of fan resonance and improving the service life of the fan.

[0156] In other embodiments, the electronic device may store a mapping table that includes multiple operating frequencies, each with a type, so that the processor can control the fan to avoid operating at non-resonant frequencies based on the mapping table. Therefore, after determining that the types of some operating frequencies in the original mapping table have changed, the processor re-determines and updates the non-resonant and resonant frequencies among the multiple operating frequencies, which can be understood as updating the type of each operating frequency in the mapping table. This application does not specifically limit the scope of this embodiment.

[0157] In some embodiments, the above-mentioned re-determining and updating of the non-resonant frequency and resonant frequency among the plurality of operating frequencies includes: sequentially controlling the fan to operate at the plurality of operating frequencies, determining the current value corresponding to the fan at each of the operating frequencies; when the fluctuation range of the current value exceeds [0, a first preset threshold], marking the operating frequency corresponding to the vibration parameter as the resonant frequency; when the fluctuation range of the current value does not exceed [0, a first preset threshold], marking the operating frequency corresponding to the vibration parameter as the non-resonant frequency.

[0158] In other embodiments, the above-mentioned re-determining and updating of the non-resonant frequency and resonant frequency among the plurality of operating frequencies includes: sequentially controlling the fan to operate at the plurality of operating frequencies, determining the vibration parameter of the fan at each of the operating frequencies; when the vibration parameter is greater than the second preset threshold, marking the operating frequency corresponding to the vibration parameter as the resonant frequency; when the vibration parameter is less than or equal to the second preset threshold, marking the operating frequency corresponding to the vibration parameter as the non-resonant frequency.

[0159] The processor can start the fans and sequentially control them to operate at the aforementioned multiple operating frequencies, determining the type of each fan corresponding to each operating frequency. For an example, please refer to the appendix. Figure 4 , Figure 4 This is a schematic diagram illustrating a process for redetermining non-resonant and resonant frequencies provided in an embodiment of this application. For example... Figure 4 As shown, the processor can start the fan, running it from the lowest operating frequency among multiple operating frequencies. It then determines the vibration parameter corresponding to the lowest operating frequency and checks if this vibration parameter is greater than a second preset threshold. If the vibration parameter is greater than the second preset threshold, the type of the lowest operating frequency corresponding to that vibration parameter is determined and updated to a resonant frequency. If the vibration parameter is less than or equal to the second preset threshold, the type of the operating frequency corresponding to that vibration parameter is determined and updated to a non-resonant frequency. The process then continues by increasing the operating frequency and sequentially determining its type until the type of the highest operating frequency among the multiple operating frequencies is determined and updated.

[0160] The processor sequentially judges multiple operating frequencies corresponding to the fan. When the corresponding first vibration parameter is large (e.g., larger than the second preset threshold), it indicates that the fan vibrates significantly at that operating frequency, which is a resonant frequency, and the fan is resonating. Conversely, when the corresponding first vibration parameter is small, it indicates that the fan vibrates less at that operating frequency, which is a non-resonant frequency, and the fan is not resonating. This judgment method is accurate and efficient, and can adjust in a timely manner according to the actual operating status of the electronic equipment, improving the reliability and user experience.

[0161] It is understood that the above process of re-determining the non-resonant frequency and the resonant frequency is performed sequentially from the lowest operating frequency to the highest operating frequency. However, in some other embodiments, the process can also be performed sequentially from the highest operating frequency to the lowest operating frequency, or randomly. This application does not impose specific limitations on this.

[0162] It is also understood that, referring to the above embodiments, the non-resonant frequency and resonant frequency among the above multiple operating frequencies can be re-determined and updated according to the fluctuation range of the current, which will not be elaborated further in this application embodiment.

[0163] In some embodiments, the method further includes: upon determining that the wind turbine is resonating, sending a first notification message, wherein the first notification message is used to indicate that the wind turbine is currently resonating. In this embodiment, upon determining that the wind turbine is resonating, a first notification message can be sent to indicate that the wind turbine is resonating, thereby first notifying the user or other electronic devices associated with the electronic device that the current operating frequency of the wind turbine in the electronic device is a resonant frequency or other type of alarm information. This allows for timely inspection and elimination of safety hazards, improving the reliability and comfort of the electronic device.

[0164] It should be noted that this application is an embodiment and does not specifically limit the type of the first prompting information and the second prompting information in the following related embodiments. For example, it can be sound, light, text, etc. For example, after determining that the first vibration parameter is greater than the second preset threshold, the indicator light of the electronic device can be illuminated to indicate that the current operating frequency of the fan is a resonant frequency; or, text information or alarm information can be sent to the terminal associated with the electronic device to indicate that the fan is currently resonating or malfunctioning.

[0165] In some embodiments, the method further includes: if it is determined that the fan has not resonated, continuing to control the fan to operate at the first operating frequency. It is understood that if it is determined that the first operating frequency is still a non-resonant frequency, the fan can be controlled to continue operating at the first operating frequency, eliminating safety hazards and maintaining the reliability and comfort of the electronic equipment.

[0166] In summary, this application provides a fan operation method that can autonomously control the resonant frequency without adding sensors or speedometers, thereby improving the reliability and comfort of electrical appliances. Specifically, in this application embodiment, when the fan is operating normally at a first operating frequency, the processor can determine whether the fan is resonating based on the fan's current value. That is, if the fluctuation range of the current value exceeds [0, a first preset threshold], it can be determined that the fan is resonating at the first operating frequency. At this point, the fan's operating frequency can be adaptively changed to control the fan to operate at another operating frequency (i.e., a second operating frequency) to prevent the fan from continuing to resonate. This method of determining whether the fan is resonating by detecting the stability of the current value avoids the need for adding speedometers or other devices, reducing packaging costs and improving the reliability of the determination. This fan operation method can greatly prevent the fan from resonating after prolonged use. Furthermore, the current periodic updates of the resonant frequency cannot meet the actual usage requirements of electronic devices. This application embodiment can autonomously adjust the resonant frequency in a timely manner, improving the reliability and comfort of electronic devices and preventing increased vibration amplitude, increased noise, and even safety hazards after prolonged use.

[0167] In addition, the electronic device may also include a compressor. In this case, in order to avoid the compressor resonating with other components in the electronic device during operation, the processor in this embodiment may also perform resonance control on the compressor in order to improve the reliability and comfort of the electronic device.

[0168] The following will refer to the above. Figure 2A The method for operating wind turbines, combined with the appendix Figure 5 Described from the perspective of the processor in an electronic device. Figure 5 This is a flowchart illustrating another wind turbine operation method provided in an embodiment of this application, as shown below. Figure 5 As shown, the fan operation method may further include the following steps S301-S304.

[0169] Step S301: Control the compressor to run at the first compression frequency and control the fan to run at the third operating frequency.

[0170] Specifically, electronic devices also include compressors, which have multiple compression frequencies. When the compressor is running, it may resonate with other components of the electronic device. Therefore, some of the above compression frequencies are resonant compression frequencies, which may resonate with other components of the electronic device; the other part are non-resonant compression frequencies, which will not resonate with other components of the electronic device.

[0171] For example, the processor can control the compressor to operate at a first compression frequency and control the fan to operate at a third operating frequency. It is understood that the third operating frequency can be any non-resonant frequency of the fan among the aforementioned operating frequencies. For example, the third operating frequency can be the second operating frequency or any other non-resonant operating frequency. That is, the fan will not resonate when operating at the third operating frequency. In this case, by controlling the compressor to operate at the first compression frequency and then determining the fan current value at the third operating frequency, it can be determined whether the compressor is resonating based on this current value.

[0172] Step S302: If the fluctuation range of the current value of the fan at the third operating frequency exceeds [0, third preset threshold], the compressor is adjusted from the first compression frequency to the second compression frequency.

[0173] Specifically, when the compressor is running at a first compression frequency and the fan is running at a third operating frequency, the processor can determine whether the compressor is resonating based on the current value of the fan at the third operating frequency. When the fluctuation range of the fan's current value at the third operating frequency exceeds [0, third preset threshold], the compressor can be adjusted from the first compression frequency to the second compression frequency.

[0174] It should be noted that the other descriptions of the third preset threshold mentioned above can also refer to the relevant descriptions of the first preset threshold in the above method embodiments, which will not be repeated here.

[0175] It is understood that the size of the third preset threshold may be the same as (e.g., 6%) or different from the size of the first preset threshold, and this application embodiment does not specifically limit this.

[0176] In some embodiments, the method further includes: the processor can determine a second vibration parameter of the fan at the third operating frequency based on the voltage and current values ​​of the fan at the third operating frequency; and if the second vibration parameter is greater than a fourth preset threshold, determine that the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold].

[0177] Refer to the above Figure 2A For step S102 and Figure 2BFor example, the voltage and current values ​​of the aforementioned fan at the third operating frequency can be obtained. Based on these voltage and current values, multiple back electromotive forces corresponding to the fan within at least one rotation cycle are calculated, and then the second vibration parameter is calculated based on these multiple back electromotive forces. This second vibration parameter (such as variance or standard deviation) can be used to characterize the vibration degree of the compressor at the first compression frequency, thereby determining whether the compressor drives the electronic equipment to resonate. That is, by determining the second vibration parameter corresponding to the fan at a non-resonance frequency, the vibration degree of the compressor at the first compression frequency is characterized, improving the accuracy of resonance judgment.

[0178] After determining the second vibration parameter, the processor can compare it with a fourth preset threshold. If the second vibration parameter is greater than the fourth preset threshold, it can be assumed that the compressor and other components of the electronic device are resonating, and the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold]. If the second vibration parameter is not greater than the fourth preset threshold, it can be assumed that the compressor and other components of the electronic device are not resonating, and the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold], indicating that the compressor is in normal operation.

[0179] In addition, since it is necessary to determine whether the compressor is resonating, the compressor needs to be kept running at the first compression frequency when obtaining the voltage and current values ​​of the fan at the third operating frequency.

[0180] It should be noted that the other descriptions of the second vibration parameter and the fourth preset threshold mentioned above can also be referred to the relevant descriptions of the first vibration parameter and the second preset threshold in the above method embodiments, which will not be repeated here.

[0181] It is understood that the size of the fourth preset threshold corresponding to the compressor may be the same as or different from the size of the second preset threshold, and this application embodiment does not make specific limitations in this regard.

[0182] Step S303: If the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold], it is determined that the compressor is in resonance, and the first compression frequency is marked as the resonance compression frequency.

[0183] Specifically, when the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold], since the third operating frequency is a non-resonant frequency corresponding to the fan, the processor can determine that the compressor is resonating and mark the first compression frequency as the resonant compression frequency.

[0184] In other embodiments, after determining the second vibration parameter, the processor can compare the second vibration parameter with the magnitude of the fourth preset threshold. If the second vibration parameter is greater than the fourth preset threshold, it can be considered that the compressor is resonating, and the first compression frequency is marked as the resonant compression frequency.

[0185] Step S304: If it is determined that the compressor is in resonance, redetermine and update the non-resonant compression frequency and resonant compression frequency among the multiple compression frequencies corresponding to the compressor.

[0186] Specifically, when the processor determines that the compressor is operating at the resonant compression frequency, it can reconfirm the non-resonant compression frequency and the resonant compression frequency among the compressor's multiple compression frequencies in order to control the compressor to avoid the resonant compression frequency. Furthermore, it can promptly avoid problems such as excessive machine vibration and increased noise caused by long-term operation.

[0187] For example, please refer to the appendix. Figure 6 , Figure 6 This is a schematic diagram illustrating another process for redetermining the non-resonant and resonant frequencies provided in an embodiment of this application. For example... Figure 6 As shown, the processor can start the fan and sequentially control the fan to operate at the multiple operating frequencies, determining the type of the fan at each operating frequency. The processor can control the fan to operate at a non-resonant frequency (i.e., the third operating frequency), control the compressor to start operating from the lowest compression frequency among the multiple compression frequencies, and determine the second vibration parameter corresponding to the fan when the compressor is operating at the lowest compression frequency. It then determines whether this second vibration parameter is greater than a fourth preset threshold. If the second vibration parameter is greater than the fourth preset threshold, the type of the lowest compression frequency corresponding to the second vibration parameter is determined and updated as a resonant compression frequency; if the second vibration parameter is less than or equal to the fourth preset threshold, the type of the compression frequency corresponding to the second vibration parameter is determined and updated as a non-resonant compression frequency. Then, the compressor's compression frequency is increased, and its type is determined sequentially until the type of the highest compression frequency among the multiple compression frequencies is determined and updated.

[0188] It is also understood that, referring to the above embodiments, the non-resonant compression frequency and resonant compression frequency among the multiple compression frequencies corresponding to the compressor can be re-determined and updated according to the fluctuation range of the current. This application embodiment will not elaborate on this further.

[0189] In some embodiments, the method further includes: upon determining that the compressor is resonating, sending a second notification message, the second notification message being used to indicate that the compressor is currently resonating.

[0190] It is understandable that, in the event that the compressor is resonating, a second notification message can be sent to indicate that the compressor is resonating, so as to indicate that the current operating frequency of the compressor in the electronic device is a resonant compression frequency, thereby enabling timely inspection and elimination of safety hazards, and improving the reliability and comfort of the electronic device.

[0191] Since a compressor operates by using an electric motor to compress air and drive a piston, judging its vibration level solely based on the compressor's back electromotive force is inaccurate. Furthermore, the vibration of a fan is relatively small when operating at its non-resonant frequency. Therefore, the vibration of the fan, which is integrated with the compressor, can be used to determine whether the compressor is causing resonance in the electronic equipment. In other words, by determining the second vibration parameter corresponding to the fan's non-resonant frequency, the vibration level of the compressor at its first compression frequency can be characterized, improving the accuracy of resonance control. Therefore, after determining the fan's non-resonant frequency, the compressor's operating status can be further assessed to eliminate potential safety hazards and improve the reliability and comfort of the electronic equipment.

[0192] In summary, the fan operation mode involved in the above-mentioned embodiments can avoid resonance phenomenon in the fans or compressors of electronic devices after long-term use. Moreover, the current periodic updating of the resonance frequency cannot meet the usage requirements of electronic devices. This application can adjust the resonance frequency in a timely manner to improve the reliability and comfort of electronic devices, and avoid increased vibration amplitude, increased noise, or even safety hazards in electronic devices.

[0193] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described functionality. Figures 1-6 The method of the illustrated embodiment.

[0194] This application provides a computer program product, the computer program including instructions, which, when executed by a computer, cause the computer to perform the following actions: Figures 1-6 The method of the illustrated embodiment.

[0195] It should be understood that the electronic devices, computer-readable storage media, and computer program products provided in the embodiments of this application can be consistent with the technical solutions of the wind turbine operation method provided in this application, and their specific contents and beneficial effects can be referred to the above. Figures 1-6 The wind turbine operation method mentioned in the illustrated embodiment will not be described again here.

[0196] It should be noted that, for the sake of simplicity, the foregoing method embodiments are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0197] In the several embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0198] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0199] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0200] If the integrated units described above are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which can be a personal computer, server, or network device, specifically a processor in the computer device) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium may include various media capable of storing program code, such as a USB flash drive, portable hard drive, magnetic disk, optical disk, read-only memory (ROM), or random access memory (RAM).

[0201] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for controlling the operation of a wind turbine, characterized in that, The method is applied to an electronic device, the electronic device including the fan; the method includes: The fan is controlled to operate at a first operating frequency; If the fluctuation range of the current value of the fan at the first operating frequency exceeds [0, first preset threshold], the fan is adjusted from the first operating frequency to the second operating frequency.

2. The method according to claim 1, characterized in that, The first preset threshold is 6%.

3. The method according to claim 1 or 2, characterized in that, The method further includes: Based on the voltage and current values ​​of the fan at the first operating frequency, a plurality of back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency are determined, and the fan generates at least two back electromotive forces in each rotation cycle. Based on the multiple back electromotive forces, a first vibration parameter corresponding to the wind turbine at the first operating frequency is determined, and the first vibration parameter is the variance or standard deviation corresponding to the multiple back electromotive forces. Based on the magnitude of the first vibration parameter, determine whether the fluctuation range of the current value exceeds [0, first preset threshold].

4. The method according to claim 3, characterized in that, The method further includes: If the first vibration parameter is greater than the second preset threshold, it is determined that the fluctuation range of the current value exceeds [0, first preset threshold].

5. The method according to any one of claims 1-4, characterized in that, The method further includes: If the fluctuation range of the current value exceeds [0, first preset threshold], it is determined that the fan is resonating and the first operating frequency is marked as the resonant frequency.

6. The method according to claim 5, characterized in that, The fan has multiple operating frequencies, some of which are the resonant frequencies and others are the non-resonant frequencies. The resonant frequencies are the frequencies at which the fan and other preset components in the electronic device resonate with each other, and the non-resonant frequencies are the frequencies at which the fan and other preset components in the electronic device do not resonate with each other. The method further includes: If it is determined that the wind turbine is in resonance, the non-resonance frequency and the resonance frequency among the plurality of operating frequencies are re-determined.

7. The method according to claim 6, characterized in that, The process of redetermining the non-resonant and resonant frequencies among the plurality of operating frequencies includes: The fan is controlled to operate at the multiple operating frequencies in sequence, and the vibration parameters of the fan at each operating frequency are determined. If the vibration parameter is greater than the second preset threshold, the operating frequency corresponding to the vibration parameter is marked as the resonant frequency; If the vibration parameter is less than or equal to the second preset threshold, the operating frequency corresponding to the vibration parameter is marked as a non-resonant frequency.

8. The method according to any one of claims 5-7, characterized in that, The method further includes: If it is determined that the wind turbine is resonating, a first prompt message is sent, which indicates that the wind turbine is currently resonating.

9. The method according to any one of claims 1-8, characterized in that, The electronic device further includes a compressor; the method further includes: The compressor is controlled to operate at a first compression frequency, and the fan is controlled to operate at a third operating frequency. If the fluctuation range of the current value of the fan at the third operating frequency exceeds [0, third preset threshold], the compressor will be adjusted from the first compression frequency to the second compression frequency.

10. The method according to claim 9, characterized in that, The method further includes: Based on the voltage and current values ​​of the fan at the third operating frequency, the second vibration parameters of the fan at the third operating frequency are determined. If the second vibration parameter is greater than the fourth preset threshold, it is determined that the fluctuation range of the current value at the third operating frequency exceeds [0, the third preset threshold].

11. The method according to claim 9 or 10, characterized in that, The method further includes: If the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold], it is determined that the compressor is in resonance, and the first compression frequency is marked as the resonance compression frequency.

12. The method according to claim 11, characterized in that, The compressor has multiple compression frequencies, some of which are resonant compression frequencies and others are non-resonant compression frequencies. The method further includes: If it is determined that the compressor is in resonance, the non-resonant compression frequency and the resonant compression frequency among the multiple compression frequencies corresponding to the compressor are re-determined.

13. The method according to claim 11 or 12, characterized in that, The method further includes: If it is determined that the compressor is resonating, a second prompt message is sent, which indicates that the compressor is currently resonating.

14. An electronic device, characterized in that, The electronic device includes a fan and a processor, the fan being controlled by the processor to rotate; the processor is used to: The fan is controlled to operate at a first operating frequency; If the fluctuation range of the current value of the fan at the first operating frequency exceeds [0, first preset threshold], the fan is adjusted from the first operating frequency to the second operating frequency.

15. The device according to claim 14, characterized in that, The first preset threshold is 6%.

16. The device according to claim 14 or 15, characterized in that, The processor is also used for: Based on the voltage and current values ​​of the fan at the first operating frequency, a plurality of back electromotive forces generated by the fan in at least one rotation cycle at the first operating frequency are determined, and the fan generates at least two back electromotive forces in each rotation cycle. Based on the multiple back electromotive forces, a first vibration parameter corresponding to the wind turbine at the first operating frequency is determined, and the first vibration parameter is the variance or standard deviation corresponding to the multiple back electromotive forces. Based on the magnitude of the first vibration parameter, determine whether the fluctuation range of the current value exceeds [0, first preset threshold].

17. The device according to claim 16, characterized in that, The processor is also used for: If the first vibration parameter is greater than the second preset threshold, it is determined that the fluctuation range of the current value exceeds [0, first preset threshold].

18. The device according to any one of claims 14-17, characterized in that, The processor is also used for: If the fluctuation range of the current value exceeds [0, first preset threshold], it is determined that the fan is resonating and the first operating frequency is marked as the resonant frequency.

19. The device according to any one of claims 14-18, characterized in that, The fan has multiple operating frequencies, some of which are the resonant frequencies and others are the non-resonant frequencies. The resonant frequencies are the frequencies at which the fan and other preset components in the electronic device resonate with each other, and the non-resonant frequencies are the frequencies at which the fan and other preset components in the electronic device do not resonate with each other. The processor is also used for: In the event of resonance in the wind turbine, the non-resonant frequency and resonant frequency among the plurality of operating frequencies are re-determined.

20. The device according to claim 19, characterized in that, The processor is specifically used for: The fan is controlled to operate at the multiple operating frequencies in sequence, and the vibration parameters of the fan at each operating frequency are determined. If the vibration parameter is greater than the second preset threshold, the operating frequency corresponding to the vibration parameter is marked as the resonant frequency; If the vibration parameter is less than or equal to the second preset threshold, the operating frequency corresponding to the vibration parameter is marked as a non-resonant frequency.

21. The device according to any one of claims 18-20, characterized in that, The electronic device also includes a communication module; The communication module is used to send a first prompt message when it is determined that the wind turbine is resonating. The first prompt message is used to indicate that the wind turbine is currently resonating.

22. The device according to any one of claims 14-21, characterized in that, The electronic device further includes a compressor; the processor is also used for: The compressor is controlled to operate at a first compression frequency, and the fan is controlled to operate at a third operating frequency. If the fluctuation range of the current value of the fan at the third operating frequency exceeds [0, third preset threshold], the compressor will be adjusted from the first compression frequency to the second compression frequency.

23. The device according to claim 22, characterized in that, The processor is also used for: Based on the voltage and current values ​​of the fan at the third operating frequency, the second vibration parameters of the fan at the third operating frequency are determined. If the second vibration parameter is greater than the fourth preset threshold, it is determined that the fluctuation range of the current value at the third operating frequency exceeds [0, the third preset threshold].

24. The device according to claim 22 or 23, characterized in that, The processor is also used for: If the fluctuation range of the current value at the third operating frequency exceeds [0, third preset threshold], it is determined that the compressor is in resonance, and the first compression frequency is marked as the resonance compression frequency.

25. The device according to claim 24, characterized in that, The compressor has multiple compression frequencies, some of which are resonant compression frequencies and others are non-resonant compression frequencies; the processor is further configured to: If it is determined that the compressor is in resonance, the non-resonant compression frequency and the resonant compression frequency among the multiple compression frequencies corresponding to the compressor are re-determined.

26. The device according to claim 24 or 25, characterized in that, The communication module is also used for: If it is determined that the compressor is resonating, a second prompt message is sent, which indicates that the compressor is currently resonating.

27. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method described in any one of claims 1-13.

28. A computer program product, characterized in that, The computer program includes instructions that, when executed by a computer, cause the computer to perform the method as described in any one of claims 1-13.

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