Motor control method, air conditioner and storage medium

Abstract

The invention discloses a control method of a motor, an air conditioner and a storage medium. The method comprises the steps that the vibration frequency and the operation rotating speed when the motor vibrates abnormally are obtained; according to the vibration frequency and the operation rotating speed, a vibration excitation source causing vibration abnormity is determined; determining a rotation speed correction value according to the vibration excitation source; correcting the running rotating speed according to the rotating speed correction value; and controlling the motor to operate at the corrected operation rotating speed. The vibration excitation source causing the abnormal vibration is determined by acquiring the vibration frequency and the operation rotation speed when the abnormal vibration of the motor occurs, then the rotation speed correction value is determined, and the operation rotation speed is corrected according to the rotation speed correction value, so that the operation rotation speed of the motor can be automatically adjusted when the abnormal vibration of the motor occurs. Resonance noise generated in the operation process of the motor is avoided, and the comfort level of a user is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of motor control technology, and in particular to a motor control method, an air conditioner, and a storage medium. Background Technology

[0002] As competition in the air conditioning industry intensifies, consumers are demanding higher quality air conditioners, with noise level being a crucial indicator. Outdoor unit noise primarily originates from the fan and compressor, with fan noise mainly stemming from resonance. In practical applications, resonance noise is caused by the resonance between the electromagnetic excitation frequency and the rotor system, or the support system; or by the resonance between the impeller's double-frequency excitation frequency and the rotor system. Therefore, the resonance frequency is an inherent characteristic of both the motor and the air conditioning system, and can only be mitigated through optimized motor design to minimize the difference between the excitation frequency and the system's natural frequency. However, existing motors cannot quickly adjust their speed based on the vibration frequency to reduce resonance noise during air conditioning system operation, thus impacting user experience. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a motor control method, an air conditioner and a storage medium that can effectively adjust the speed according to the vibration frequency, so as to avoid the motor generating resonance noise during operation and affecting the motor's operating quality.

[0004] In a first aspect, embodiments of the present invention provide a method for controlling a motor, the method comprising: acquiring the vibration frequency and operating speed of the motor when an abnormal vibration occurs; determining a vibration excitation source causing the abnormal vibration based on the vibration frequency and the operating speed; determining a speed correction value based on the vibration excitation source; correcting the operating speed based on the speed correction value; and controlling the motor to operate at the corrected operating speed.

[0005] The motor control method provided by the present invention has at least the following beneficial effects: by acquiring the vibration frequency and operating speed when the motor experiences abnormal vibration, the vibration excitation source causing the abnormal vibration is determined, and then the speed correction value is determined. The operating speed is then corrected according to the speed correction value, so that the operating speed of the motor can be automatically adjusted when the motor experiences abnormal vibration, thereby avoiding resonance noise generated during the operation of the motor and ensuring user comfort.

[0006] Secondly, embodiments of the present invention provide an operation control device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the motor control method described above.

[0007] The operation control device provided according to the embodiments of the present invention has at least the following beneficial effects: by acquiring the vibration frequency and operating speed when the motor has abnormal vibration, the vibration excitation source causing the abnormal vibration is determined, and then the speed correction value is determined. The operating speed is corrected according to the speed correction value, so that the operating speed of the motor can be automatically adjusted when the motor has abnormal vibration, avoiding resonance noise generated by the motor during operation and ensuring user comfort.

[0008] Thirdly, embodiments of the present invention provide an air conditioner including the aforementioned operation control device.

[0009] The air conditioner provided according to the embodiments of the present invention has at least the following beneficial effects: by obtaining the vibration frequency and operating speed when the motor has abnormal vibration, the vibration excitation source causing the abnormal vibration is determined, and then the speed correction value is determined. The operating speed is corrected according to the speed correction value, so that the operating speed of the motor can be automatically adjusted when the motor has abnormal vibration, avoiding resonance noise generated by the motor during operation and ensuring user comfort.

[0010] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the motor control method described above.

[0011] The computer-readable storage medium provided according to the embodiments of the present invention has at least the following beneficial effects: by acquiring the vibration frequency and operating speed when the motor has abnormal vibration, the vibration excitation source causing the abnormal vibration is determined, and then the speed correction value is determined. The operating speed is corrected according to the speed correction value, so that the operating speed of the motor can be automatically adjusted when the motor has abnormal vibration, avoiding resonance noise generated during the operation of the motor and ensuring user comfort.

[0012] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1This is a flowchart of a motor control method provided in an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 Flowchart of step S1000;

[0017] Figure 3 yes Figure 1 Flowchart of step S2000;

[0018] Figure 4 yes Figure 3 Flowchart of step S2100;

[0019] Figure 5 yes Figure 3 A flowchart of step S2100 provided in another embodiment of the present invention;

[0020] Figure 6 yes Figure 3 A flowchart of step S2100 provided in another embodiment of the present invention;

[0021] Figure 7 yes Figure 6 Flowchart of step S2170;

[0022] Figure 8 yes Figure 1 Flowchart of step S3000;

[0023] Figure 9 yes Figure 1 Flowchart of step S5000;

[0024] Figure 10 yes Figure 9 Flowchart of step S5300;

[0025] Figure 11 This is a structural diagram of an operation control device provided in an embodiment of the present invention. Detailed Implementation

[0026] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0027] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, while "above," "below," "within," etc. are understood to include the number itself. "Any one" refers to one or more, and "at least one of the following" and similar expressions refer to any combination of these items, including any combination of single or multiple items. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0028] It should be noted that the terms "setting," "installing," and "connecting" in the embodiments of this invention should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of the above terms in the embodiments of this invention in conjunction with the specific content of the technical solution. For example, the term "connection" can be a mechanical connection, an electrical connection, or a connection that allows for mutual communication; it can be a direct connection or an indirect connection through an intermediate medium.

[0029] It should be noted that the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Currently, the noise from air conditioner outdoor units mainly originates from the fan and compressor, with the fan noise primarily stemming from resonance. The vibration excitation sources for the motor mainly come from electromagnetic fields and the impeller. Resonance refers to the situation where a physical system vibrates with a larger amplitude at a specific frequency and wavelength than at other frequencies and wavelengths; these specific frequencies and wavelengths are called the resonant frequency and resonant wavelength. At the resonant frequency and resonant wavelength, even a small periodic vibration can produce a large vibration because kinetic energy is stored in the physical system. When the motor's vibration excitation source is electromagnetic, the electromagnetic excitation force will cause resonance in the motor. The electromagnetic excitation force is caused by fluctuations in the magnetic flux density in the motor's air gap. Resonance is particularly triggered when the motor's operating frequency is close to the main excitation frequency of its structure, leading to a significant increase in vibration amplitude. Specifically, the main excitation frequency of a DC motor is six times the electrical frequency; that is, when the motor's vibration frequency f reaches six times the product of the motor's speed n and the number of poles p, it will approach the resonant frequency of the rotor and support system, thus causing resonance. For example, if the current motor is a 10p motor with a speed n = 1000 rpm, its 6th frequency is 1000 / 60*5*6 = 500 Hz. If the motor's vibration frequency reaches 500 Hz, it will resonate with the rotor and support system's resonant frequency. Secondly, if the wind turbine's blade dimensions and dynamic balance are not well-maintained, it can easily excite a frequency-multiplying excitation source. In this case, the motor's vibration frequency will be close to the rotor system's resonant frequency, causing the motor to resonate as well. Therefore, to avoid motor resonance during operation, it is necessary to determine whether the current vibration excitation source is electromagnetic or the wind turbine, and adjust the motor's current speed accordingly to prevent the motor speed from meeting the conditions for vibration excitation, thereby reducing motor operating noise.

[0031] To reduce noise, existing motors and air conditioning systems optimize motor structure to avoid resonance. For example, adjusting the rotor shaft length or adding damping grooves to the shaft adjusts the rotor system's frequency to avoid electromagnetic excitation frequencies, thus reducing noise generated during motor operation. Additionally, installing damping rings between the motor and its support reduces high-frequency noise, or adjusting the support mode reduces noise generated by the support system during motor operation. Furthermore, controlling and adjusting the dynamic balance of the motor impeller avoids resonance noise caused by the fan blade's frequency doubling excitation source. However, during operation, external factors and the motor's own operating process can cause changes in the motor's vibration frequency. First, temperature changes cause variations in bearing grease and clearance, leading to changes in bearing contact rigidity and altering the rotor system's modes. This causes the rotor system's vibration frequency to fall within the electromagnetic excitation frequency range. Second, temperature changes also alter the rigidity of the wind turbine, causing the rotor system's vibration frequency to fall within the electromagnetic excitation frequency range or the range of the wind turbine's frequency doubling excitation source. Third, dust accumulation on the wind turbine alters its weight, affecting its dynamic balance, and causing the support system's frequency to fall within the electromagnetic excitation frequency range or the range of the wind turbine's frequency doubling excitation source. Therefore, simply optimizing the motor's structure cannot prevent motor resonance or eliminate resonance noise during operation.

[0032] This invention provides a motor control method, an air conditioner, and a storage medium. By acquiring the vibration frequency and operating speed of the motor when abnormal vibration occurs, the vibration excitation source causing the abnormal vibration is determined, and then a speed correction value is determined. The operating speed is corrected according to the speed correction value, so that the operating speed of the motor can be automatically adjusted when abnormal vibration occurs, avoiding resonance noise generated by the motor during operation and ensuring user comfort.

[0033] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0034] Please see Figure 1 , Figure 1 A flowchart of a motor control method provided by a first aspect embodiment of the present invention is shown.

[0035] like Figure 1 As shown, the motor control method includes the following steps:

[0036] Step S1000: Obtain the vibration frequency and operating speed when the motor exhibits abnormal vibration.

[0037] Understandably, to accurately assess a motor's operating status, it's necessary to acquire its vibration frequency and operating speed in real time. As mentioned above, due to external factors, the motor's vibration frequency and operating speed can change uncontrollably during operation. Therefore, when abnormal motor vibration occurs, it's crucial to monitor these parameters in real time to determine if resonance is occurring during operation.

[0038] As we can understand, vibration frequency is the number of vibration cycles an object completes per second, measured in Hertz (Hz). Frequency is a characteristic of vibration and an important basis for analyzing the causes and sources of vibration. Period is the time required for an object to complete one vibration cycle, measured in seconds. For example, the period of a simple pendulum is the time it takes for the weight to move from left to right and then back to its starting point on the left. Frequency and period are reciprocals of each other. For an electric motor, one rotation of the rotor completes one vibration cycle, which is one period, or one complete cycle of vibration.

[0039] Understandably, the vibration frequency of an electric motor is typically acquired and monitored in real time using vibration sensors. Vibration sensors operate on two main principles: static and dynamic. Dynamic vibration sensors include capacitive and piezoelectric sensors. These sensors offer advantages such as high sensitivity, high resolution, wide operating frequency range, and lightweight design. They monitor vibration by converting the vibration signal of an object into an electrical signal. Vibration sensors have a wide range of industrial applications, such as monitoring the operating status of mechanical equipment like fans, pumps, blowers, and automotive engines, helping maintenance personnel diagnose faults and prevent damage to the equipment. Furthermore, vibration sensors are widely used in alarm detection systems, such as car anti-theft alarms, which can monitor vibrations in specific frequency bands and issue an alarm when necessary.

[0040] As we understand it, motor speed refers to the speed at which a rotating body completes one revolution, usually expressed as the number of revolutions per minute. Motor speed is related to motor power, load size, torque, and other factors, and is an important indicator of motor performance. In practical applications, there are several methods for measuring motor speed. The most common method is to monitor the motor speed in real time using a speed sensor. Motors are usually equipped with speed sensors, which can directly read their speed; this method offers high accuracy and reliability. Secondly, speed measuring instruments, such as tachometers and speed meters, are used to measure the motor speed. This method is generally quite accurate but requires specific equipment. Thirdly, Hall effect sensors are used. Hall effect sensors detect the magnetic poles on the motor rotor to measure the speed. This method is relatively simple and easy to implement, but suffers from insufficient measurement accuracy. Finally, photoelectric sensors are used. A photoelectric sensor is installed on the motor, and the speed is calculated by detecting reflective stripes on the rotor. This method can accurately measure the speed, but requires high installation precision and equipment cost.

[0041] In this embodiment, a speed sensor is installed on the motor to monitor the motor's operating speed in real time. Specifically, the speed sensor converts the rotational speed of a rotating object into an electrical output. Speed ​​sensors are indirect measurement devices and can be manufactured using mechanical, electrical, magnetic, optical, and hybrid methods. Based on the signal form, speed sensors can be divided into analog and digital types. The speed sensor uses a magnetoresistive sensor as the sensing element and is a new type of speed sensor. The core component of the speed sensor uses a magnetoresistive sensor as the detection element, and a new signal processing circuit reduces noise and improves functionality. By comparing the output waveform with other types of gear speed sensors, the measured speed error is extremely small and the linearity characteristics are highly consistent. When the motor rotor has raised or recessed magnetic or magnetically conductive materials, as the measured object rotates, the sensor outputs a pulse signal related to the rotational frequency, achieving the purpose of accurately measuring the motor's operating speed.

[0042] It is understandable that real-time monitoring of the motor's vibration frequency and operating speed using vibration and speed sensors allows for accurate and timely understanding of the motor's operating status, facilitating the identification and analysis of the causes of abnormal motor vibration. However, obtaining the motor's vibration frequency through vibration sensors and its operating speed through speed sensors are existing technologies and will not be elaborated upon here.

[0043] Please see Figure 2 , Figure 2 A schematic diagram illustrating a specific implementation process of step S1000 above is shown. For example... Figure 2 As shown, step S1000 includes at least the following steps:

[0044] Step S1100: Obtain the first vibration amplitude of the motor during operation.

[0045] Understandably, to determine whether a motor exhibits abnormal vibration during operation, it is necessary to monitor the motor's vibration amplitude. Vibration amplitude represents the maximum deviation of the vibration signal and can be used to assess the degree of motor vibration. Measuring the amplitude of a vibrating motor requires considering factors such as the vibration mode, amplitude magnitude, and measurement accuracy. Generally, methods for measuring motor vibration amplitude include displacement sensor methods, accelerometer methods, and strain sensor methods. Among these, the displacement sensor method is a commonly used method that can directly measure the magnitude of the motor's vibration amplitude and has high measurement accuracy. In practical applications, vibration measuring points are set on the motor's fan blade support, and displacement sensors are installed at these points to monitor the vibration amplitude in real time and obtain the initial vibration amplitude of the motor during operation. Obtaining the initial vibration amplitude using a displacement sensor is existing technology and will not be elaborated upon here.

[0046] Step S1200: If the first vibration amplitude is greater than or equal to the preset vibration threshold, it is determined that the motor has an abnormal vibration.

[0047] It is understandable that motor vibration amplitude refers to the amount of vibration generated by the motor during operation, and its magnitude directly affects the motor's performance and lifespan. The normal amplitude range of a motor varies depending on its power and speed. For example, when the motor power is less than or equal to 7.5 kW and the speed is less than or equal to 3000 rpm, the amplitude limit should be less than 20 micrometers; when the motor power is less than or equal to 7.5 kW and the speed is greater than 3000 rpm, the amplitude limit should be less than 15 micrometers. Therefore, by comparing the first vibration amplitude with the preset vibration threshold, it is possible to accurately determine whether the motor is experiencing abnormal vibration, and then analyze the cause of the abnormal vibration.

[0048] Step S2000: Determine the vibration excitation source that causes abnormal vibration based on the vibration frequency and operating speed.

[0049] It is understandable that during motor operation, a vibration frequency reaching a specific range can trigger resonance and lead to abnormal vibration. As mentioned above, resonance occurs when the vibration frequency reaches the primary excitation frequency of a DC motor or the secondary excitation frequency of a wind turbine blade. The primary excitation frequency of the DC motor and the secondary excitation frequency of the wind turbine blade are related to the motor's operating speed. Therefore, by calculating the motor's operating speed, it can be determined whether the motor's vibration frequency falls within the electromagnetic excitation frequency range or the secondary excitation frequency range of the wind turbine blade, thus identifying the vibration excitation source causing the abnormal vibration as either an electromagnetic excitation source or a wind turbine excitation source.

[0050] Please see Figure 3 , Figure 3A schematic diagram illustrating the specific implementation process of step S2000 above is shown. For example... Figure 3 As shown, step S2000 further includes at least the following steps:

[0051] Step S2100: Determine the target excitation source relationship that the vibration frequency and operating speed satisfy.

[0052] Understandably, after obtaining the vibration frequency and operating speed of the motor, in order to determine the vibration excitation source causing abnormal motor vibration, it can be confirmed based on the target excitation source relationship satisfied by the vibration frequency and operating speed. Specifically, when the vibration frequency and operating speed satisfy the electromagnetic excitation source relationship, it can be determined that the electromagnetic excitation source is causing the abnormal motor vibration; when the vibration frequency and operating speed satisfy the wind turbine excitation source relationship, it can be determined that the wind turbine excitation source is causing the abnormal motor vibration.

[0053] Please see Figure 4 , Figure 4 A schematic diagram illustrating the specific implementation process of step S2100 above is shown. For example... Figure 4 As shown, step S2100 further includes at least the following steps:

[0054] Step S2110: Obtain the electromagnetic excitation source relationship.

[0055] It is understandable that the electromagnetic excitation force is caused by fluctuations in the magnetic flux density in the motor's air gap, and resonance can occur, especially when the motor's operating frequency is close to the main excitation frequency of its structure. Therefore, the main excitation frequency can be determined through specific experiments for the current motor system to establish the electromagnetic excitation source relationship. In this embodiment, the electromagnetic excitation source relationship between the motor's vibration frequency f and operating speed n is 2f*1.05≥n≥2f*0.95. Of course, in other motor systems, the electromagnetic excitation source relationship needs to be adjusted according to the specific configuration of the actual motor, such as the specifications and dimensions of the rotor and stator, which will not be elaborated here.

[0056] Step S2120: Determine whether the vibration frequency and operating speed satisfy the electromagnetic excitation source relationship.

[0057] Understandably, after obtaining the electromagnetic excitation source formula, the vibration frequency and operating speed can be directly substituted into the formula to determine whether they satisfy the formula. Specifically, after detecting the motor's vibration frequency f and operating speed n, the formula can be used to determine whether the operating speed n falls within the range of [2f*0.95, 2f*1.05]. If the operating speed n falls within the range of the formula, then the vibration frequency and operating speed satisfy the formula.

[0058] Step S2130: If the vibration frequency and the operating speed satisfy the electromagnetic excitation source relationship, the electromagnetic excitation source relationship is determined as the target excitation source relationship.

[0059] It is understandable that, through the above step S2120, if the vibration frequency and operating speed satisfy the electromagnetic excitation source relationship, it can be determined that the vibration excitation source of the motor comes from electromagnetic fields. Thus, the electromagnetic excitation source relationship is determined as the target excitation source relationship, so as to adjust the operating speed of the motor according to the main excitation frequency of the motor structure, thereby reducing the resonance phenomenon of the motor.

[0060] Please see Figure 5 , Figure 5 A schematic diagram illustrating the specific implementation process of step S2100 above is shown. For example... Figure 5 As shown, step S2100 further includes at least the following steps:

[0061] Step S2140: If the vibration frequency and operating speed do not satisfy the electromagnetic excitation source relationship, obtain the first wind turbine excitation source relationship, the second wind turbine excitation source relationship, and the third wind turbine excitation source relationship, wherein the first wind turbine excitation source relationship corresponds to the first harmonic of the wind turbine, the second wind turbine excitation source relationship corresponds to the second harmonic of the wind turbine, and the third wind turbine excitation source relationship corresponds to the third harmonic of the wind turbine.

[0062] It is understandable that the excitation source formulas for the first, second, and third wind turbines are all used to determine whether the operating speed is within the target range. The target range corresponding to the excitation source formula for the first wind turbine includes a first upper limit and a first lower limit; the target range corresponding to the excitation source formula for the second wind turbine includes a second upper limit and a second lower limit; and the target range corresponding to the excitation source formula for the third wind turbine includes a third upper limit and a third lower limit. The first upper limit, first lower limit, second upper limit, second lower limit, third upper limit, and third lower limit are all calculated based on the vibration frequency; the second lower limit is greater than the third upper limit, and the first lower limit is greater than the second upper limit.

[0063] It is understandable that, as can be seen from the above step S2120, if the operating speed n is not within the range of the electromagnetic excitation source relationship, that is, the vibration frequency and operating speed do not satisfy the electromagnetic excitation source relationship, then it is ruled out that the vibration excitation source of the motor comes from electromagnetic sources. Therefore, it is necessary to determine whether the vibration excitation source of the motor comes from the wind turbine. Experiments show that when the blade size is not set properly or the dynamic balance of the wind turbine is poorly matched, it is easy to excite the blade's frequency-multiplying excitation source. At this time, the vibration frequency of the motor is close to the resonant frequency of the rotor system, and the motor will also resonate. Specifically, when the vibration frequency of the motor is close to the first, second, and third harmonics of the wind turbine, the blade's frequency-multiplying excitation source will cause the wind turbine to resonate. Therefore, it is necessary to obtain the first, second, and third wind turbine excitation source relationships corresponding to the first, second, and third harmonics of the wind turbine. In this embodiment, the relationship between the vibration frequency f of the motor and the operating speed n is as follows: 20f*1.05≥n≥20f*0.95 for the first wind turbine excitation source, 10f*1.05≥n≥10f*0.95 for the second wind turbine excitation source, and 20f / 3*1.05≥n≥20f / 3*0.95 for the third wind turbine excitation source. That is, the first upper bound is 20f*1.05, the first lower bound is 20f*0.95, the second upper bound is 10f*1.05, the second lower bound is 10f*0.95, the third upper bound is 20f / 3*1.05, and the third lower bound is 20f / 3*0.95, satisfying that the second lower bound is greater than the third upper bound, and the first lower bound is greater than the second upper bound. Of course, in other motor systems, the excitation source relationship of the motor's impeller needs to be adjusted according to the specific configuration of the actual motor, such as the specifications and dimensions of the impeller, which will not be elaborated here.

[0064] Step S2150: Iterate through and determine whether the excitation source relationship of the first wind turbine, the excitation source relationship of the second wind turbine, and the excitation source relationship of the third wind turbine are satisfied by the vibration frequency and the operating speed.

[0065] Understandably, after obtaining the first, second, and third wind turbine excitation source relationships, it is necessary to sequentially determine whether the vibration frequency and operating speed satisfy the above three wind turbine excitation source relationships. Consistent with the judgment process in step S2120 above, after detecting the motor's vibration frequency f and operating speed n, based on the first wind turbine excitation source relationship, it is determined whether the operating speed n falls within the interval [20f*0.95, 20f*1.05]. If the operating speed n falls within the interval of the first wind turbine excitation source relationship, it is determined that the vibration frequency and operating speed satisfy the first wind turbine excitation source relationship; if the operating speed n is not within the interval of the first wind turbine excitation source relationship, based on the second wind turbine excitation source relationship, it is determined whether the operating speed n falls within [10f*0.95, ...]. Within the range of 10f*1.05, if the operating speed n falls within the range of the second wind turbine excitation source relationship above, then the vibration frequency and operating speed satisfy the second wind turbine excitation source relationship. If the operating speed n is not within the range of the second wind turbine excitation source relationship above, according to the third wind turbine excitation source relationship, it is determined whether the operating speed n falls within the range of [20f / 3*0.95, 20f / 3*1.05]. If the operating speed n falls within the range of the third wind turbine excitation source relationship above, then the vibration frequency and operating speed satisfy the third wind turbine excitation source relationship.

[0066] Step S2160: Determine the target excitation source relationship from the first wind turbine excitation source relationship, the second wind turbine excitation source relationship, and the third wind turbine excitation source relationship, which are satisfied by the vibration frequency and the operating speed.

[0067] It is understandable that, through the above step S2150, if the vibration frequency and operating speed satisfy one of the first, second, and third wind turbine excitation source equations, it can be determined that the vibration excitation source of the motor comes from the wind turbine. Thus, the one of the first, second, and third wind turbine excitation source equations satisfied by the vibration frequency and operating speed is determined as the target excitation source equation, so as to adjust the operating speed of the motor according to the wind turbine structure of the motor, thereby reducing the resonance phenomenon of the motor.

[0068] Please see Figure 6 , Figure 6 A schematic diagram illustrating the specific implementation process of step S2100 above is shown. For example... Figure 6 As shown, step S2100 further includes at least the following steps:

[0069] Step S2170: If the vibration frequency and operating speed do not satisfy the electromagnetic excitation source relationship, obtain the target wind turbine excitation source relationship.

[0070] It is understandable that after step S2130 above, if the vibration frequency and operating speed do not satisfy the electromagnetic excitation source relationship, the target wind turbine excitation source relationship can be determined based on the current harmonic of the motor, so as to determine whether the vibration frequency and operating speed satisfy the target wind turbine excitation source relationship. Here, the current harmonic of the motor is determined by the structure of the wind turbine. This embodiment differs from steps S2140 to S2160 above in that it does not require traversing and judging the first, second, and third wind turbine excitation source relationships. Instead, it determines the target wind turbine excitation source relationship based on the current harmonic of the motor, which effectively improves the efficiency and accuracy of determining whether the vibration frequency and operating speed satisfy the target wind turbine excitation source relationship.

[0071] Please see Figure 7 , Figure 7 A schematic diagram illustrating the specific implementation process of step S2170 above is shown. For example... Figure 7 As shown, step S2170 further includes at least the following steps:

[0072] Step S2171: Obtain the current frequency multiplication factor of the wind turbine.

[0073] Understandably, after obtaining the vibration frequency *f* and operating speed *n* of the motor, the current harmonic frequency of the wind turbine can be determined by comparing the vibration frequency with the harmonic frequencies corresponding to the wind turbine's harmonic excitation source. Specifically, the wind turbine's harmonic excitation sources include 1st harmonic frequency (n / 60*3), 2nd harmonic frequency (n / 60*3*2), and 3rd harmonic frequency (n / 60*3*3). The current harmonic frequency of the wind turbine is determined by comparing the vibration frequency *f* with the magnitudes of the 1st, 2nd, and 3rd harmonic frequencies of the wind turbine. Of course, the magnitudes of the aforementioned 1st, 2nd, and 3rd harmonic frequencies of the wind turbine can be adjusted according to the wind turbine's structure and size specifications, which will not be elaborated here.

[0074] Step S2172: Determine the excitation source relationship of the target wind turbine based on the current frequency doubling.

[0075] It is understandable that after obtaining the current harmonic frequency of the wind turbine, the corresponding excitation source relationship of the target wind turbine can be obtained. Specifically, the first, second, and third harmonic frequencies of the wind turbine correspond one-to-one with the first, second, and third excitation source relationships of the wind turbine in step S2140 above. That is, when the current harmonic frequency of the wind turbine is the first harmonic frequency of the wind turbine, and the operating speed n falls within the range of the first excitation source relationship, it is determined that the vibration excitation source of the motor comes from the wind turbine; when the current harmonic frequency of the wind turbine is the second harmonic frequency of the wind turbine, and the operating speed n falls within the range of the second excitation source relationship, it is determined that the vibration excitation source of the motor comes from the wind turbine; when the current harmonic frequency of the wind turbine is the third harmonic frequency of the wind turbine, and the operating speed n falls within the range of the third excitation source relationship, it is determined that the vibration excitation source of the motor comes from the wind turbine. Therefore, by using the current harmonic frequency of the wind turbine, the excitation source relationship of the target wind turbine applicable to the current motor can be quickly determined, which effectively improves the efficiency and accuracy of judging whether the vibration frequency and operating speed meet the excitation source relationship of the target wind turbine.

[0076] It is understandable that both the electromagnetic excitation source formula and the target wind turbine excitation source formula are used to determine whether the operating speed is within the target range. The target range corresponding to the electromagnetic excitation source formula includes a fourth upper limit value and a fourth lower limit value, while the target range corresponding to the target wind turbine excitation source formula includes a fifth upper limit value and a fifth lower limit value. The fourth upper limit value, the fourth lower limit value, the fifth upper limit value, and the fifth lower limit value are all calculated based on the vibration frequency; the fifth lower limit value is greater than the fourth upper limit value. Corresponding to the embodiments of steps S2110 to S2150 above, the fourth upper limit value is 2f*1.05, the fourth lower limit value is 2f*0.95, and the fifth upper limit value and the fifth lower limit value correspond to the current harmonic frequency of the wind turbine. For example, when the first wind turbine excitation source formula is the target wind turbine excitation source formula, the fifth upper limit value is 20f*1.05, the fifth lower limit value is 20f*0.95, which satisfies the condition that the fifth lower limit value is greater than the fourth upper limit value. Of course, in other motor systems, the electromagnetic excitation source relationship of the motor and the excitation source relationship of the target wind turbine need to be adjusted according to the specific configuration of the actual motor, such as the specifications and dimensions of the wind turbine, etc., which are not limited here.

[0077] Step S2180: Determine whether the vibration frequency and operating speed satisfy the target wind turbine excitation source relationship.

[0078] Understandably, after determining the excitation source formula for the target wind turbine, the vibration frequency and operating speed can be directly substituted into the aforementioned excitation source formula to determine whether they satisfy the excitation source formula. Consistent with step S2120 above, when the first wind turbine excitation source formula is the target wind turbine excitation source formula, based on this formula, it is determined whether the operating speed n falls within the range of [20f*0.95, 20f*1.05]. If the operating speed n falls within the range of the first wind turbine excitation source formula, then the vibration frequency and operating speed satisfy the excitation source formula. Similarly, when the second or third wind turbine excitation source formula is the target wind turbine excitation source formula, only one determination is needed to determine whether the vibration frequency and operating speed satisfy the excitation source formula, eliminating the need for the iterative operation in step S2150 above.

[0079] Step S2190: If the vibration frequency and operating speed satisfy the target wind turbine excitation source relationship, the target wind turbine excitation source relationship is determined as the target excitation source relationship.

[0080] It is understandable that, consistent with step S2160 above, if the vibration frequency and operating speed satisfy the target wind turbine excitation source relationship, that is, if the vibration frequency and operating speed satisfy one of the first wind turbine excitation source relationship, the second wind turbine excitation source relationship, and the third wind turbine excitation source relationship, it can be determined that the vibration excitation source of the motor comes from the wind turbine. Thus, one of the first wind turbine excitation source relationship, the second wind turbine excitation source relationship, and the third wind turbine excitation source relationship satisfied by the vibration frequency and operating speed is determined as the target excitation source relationship, so as to adjust the operating speed of the motor according to the wind turbine structure of the motor, thereby reducing the resonance phenomenon of the motor.

[0081] Step S2200: Determine the vibration excitation source that causes the vibration abnormality based on the target excitation source relationship.

[0082] It is understandable that, as can be seen from step S2100 above, after determining the target excitation source relationship that the vibration frequency and operating speed satisfy, the vibration excitation source causing the vibration abnormality can be determined based on the target excitation source relationship. Specifically, when the vibration frequency and operating speed satisfy the electromagnetic excitation source relationship, the vibration excitation source causing the vibration abnormality is determined to be electromagnetic; when the vibration frequency and operating speed satisfy one of the first wind turbine excitation source relationship, the second wind turbine excitation source relationship, and the third wind turbine excitation source relationship, the vibration excitation source causing the vibration abnormality is determined to be wind turbine.

[0083] Step S3000: Determine the rotational speed correction value based on the vibration excitation source.

[0084] Understandably, since different vibration excitation sources result in different resonant frequency ranges, it is necessary to determine the correction value of the motor operating speed based on the vibration excitation source in order to quickly adjust the motor operating speed to outside the range of the vibration excitation source, avoid the motor vibration frequency and operating speed from satisfying the above-mentioned target excitation source relationship, effectively reduce the occurrence of motor resonance, and reduce the noise generated during motor operation.

[0085] In other embodiments, if the vibration frequency and operating speed do not satisfy either the electromagnetic excitation source relationship or the wind turbine excitation source relationship, meaning the vibration excitation source is neither an electromagnetic excitation source nor a wind turbine excitation source, then the vibration excitation source may be another excitation source. In this case, other methods can be used for adjustment, or an error alarm can be issued to remind the user to check the wind turbine. In practical applications, when using other methods for adjustment, a preset speed correction value can be used, for example, starting at 7 rpm and iterating until the motor no longer exhibits abnormal vibration.

[0086] Please see Figure 8 , Figure 8 A schematic diagram illustrating the specific implementation process of step S3000 above is shown. For example... Figure 8 As shown, step S3000 further includes at least the following steps:

[0087] Step S3100: If the vibration excitation source is an electromagnetic excitation source, the first correction value is determined as the rotational speed correction value.

[0088] Understandably, when the vibration excitation source is an electromagnetic excitation source, the speed correction value can be set to the first correction value corresponding to the electromagnetic excitation source based on its characteristics. Specifically, experiments have shown that the resonance frequency range caused by the electromagnetic excitation source is 10–20 Hz. In this case, simply increasing the operating speed by 20 rpm, i.e., setting the first correction value of 20 rpm as the speed correction value, will ensure that the motor's vibration frequency does not fall within the resonance frequency range caused by the electromagnetic excitation source.

[0089] Step S3200: If the vibration excitation source is a wind turbine excitation source, the second correction value is determined as the speed correction value, wherein the first correction value is greater than the second correction value.

[0090] It is understandable that when the vibration excitation source is a wind turbine excitation source, the speed correction value can be set to a second correction value corresponding to the wind turbine excitation source, based on the characteristics of the wind turbine excitation source. Specifically, through experiments, the resonance frequency range caused by the wind turbine excitation source is found to be 1-2 Hz. In this case, simply increasing the operating speed by 7 rpm, i.e., setting the second correction value of 7 rpm as the speed correction value, can ensure that the vibration frequency of the motor does not fall within the resonance frequency range caused by the wind turbine excitation source. In practical applications, since the resonance frequency range caused by the electromagnetic excitation source is larger than that caused by the wind turbine excitation source, a first correction value greater than the second correction value can ensure that the speed correction value ensures that the vibration frequency and operating speed do not satisfy the target excitation source relationship. Of course, in other embodiments, the first and second correction values ​​can be adjusted according to the size specifications of the motor, which is not limited here.

[0091] Step S4000: Correct the operating speed according to the speed correction value.

[0092] Understandably, after obtaining the speed correction value, the operating speed of the motor can be corrected. For example, when the vibration excitation source is an electromagnetic excitation source, increasing the motor's operating speed by the first correction value yields the corrected operating speed, ensuring that the corrected operating speed and vibration frequency do not satisfy the electromagnetic excitation source relationship. In practical applications, correcting the operating speed based on the speed correction value is existing technology and will not be elaborated upon here.

[0093] Step S5000: Control the motor to run at the corrected operating speed.

[0094] Understandably, after correcting the operating speed, the motor is controlled to operate at the corrected speed so that the corrected operating speed and vibration frequency do not satisfy the target excitation source relationship, effectively mitigating the motor's resonance phenomenon. Specifically, when the vibration excitation source is an electromagnetic excitation source, the motor is controlled to operate at a speed equal to the operating speed plus a first correction value, so that the corrected operating speed and vibration frequency do not satisfy the electromagnetic excitation source relationship. The motor does not meet the resonance condition caused by electromagnetic interference, thus effectively reducing the motor's operating noise. When the vibration excitation source is a wind turbine excitation source, the motor is controlled to operate at a speed equal to the operating speed plus a second correction value, so that the corrected operating speed and vibration frequency do not satisfy the wind turbine excitation source relationship. The motor does not meet the resonance condition caused by the wind turbine, thus effectively reducing the motor's operating noise. In practical applications, controlling the motor to operate at the corrected speed is existing technology and will not be elaborated upon here.

[0095] Please see Figure 9 , Figure 9 A schematic diagram illustrating a specific implementation process of step S5000 above is shown. For example... Figure 9 As shown, step S5000 includes at least the following steps:

[0096] Step S5100: Obtain the second vibration amplitude after the motor has been running at the corrected operating speed.

[0097] Understandably, in order to determine whether the motor exhibits abnormal vibration after correction, it is necessary to monitor the second vibration amplitude of the motor after running at the corrected operating speed. The specific operation process is the same as step S1100 above, and will not be repeated here.

[0098] Step S5200: Compare the second vibration amplitude with the preset vibration threshold to obtain the comparison result.

[0099] Understandably, after correcting the motor's operating speed, in order to determine whether the motor is experiencing abnormal vibration, it is necessary to compare the second vibration amplitude with a preset vibration threshold. The specific operation is the same as step S1200 above. By comparing the magnitude of the second vibration amplitude with the preset vibration threshold, the comparison result of whether the motor is experiencing abnormal vibration can be accurately determined, and then the cause of the abnormal motor vibration can be analyzed and determined.

[0100] Step S5300: Control the motor based on the comparison results.

[0101] Understandably, after obtaining the comparison results, if the second vibration amplitude is still greater than the preset vibration threshold, steps S2000 to S5000 are repeated to control the motor's operating speed. If the second vibration amplitude is less than the preset vibration threshold, the motor is controlled to maintain its current operating speed.

[0102] Please see Figure 10 , Figure 10 A schematic diagram illustrating a specific implementation process of step S5300 above is shown. For example... Figure 10 As shown, step S5300 includes at least the following steps:

[0103] Step S5310: If the second vibration amplitude is greater than or equal to the preset vibration threshold, obtain the new vibration frequency after the motor runs at the corrected operating speed.

[0104] It is understandable that, consistent with step S1000 above, if the second vibration amplitude is greater than or equal to the preset vibration threshold, that is, if it is determined that the motor still has abnormal vibration after correction, then the new vibration frequency of the motor after running at the corrected operating speed is obtained again.

[0105] Step S5320: Determine the new vibration excitation source based on the new vibration frequency and the corrected operating speed.

[0106] It is understandable that, consistent with step S2000 above, if the motor still exhibits abnormal vibration after correction, the target excitation source relationship satisfied by the vibration frequency and operating speed is determined based on the new vibration frequency and the corrected operating speed, thereby identifying the new vibration excitation source causing the abnormal vibration. It is also understandable that after correcting the operating speed, the vibration excitation source causing motor resonance may be the same as or different from the vibration excitation source obtained in step S2000 above. Therefore, it is necessary to determine the new vibration excitation source based on the new vibration frequency and the corrected operating speed.

[0107] Step S5330: Determine the new rotational speed correction value based on the new vibration excitation source.

[0108] It is understandable that, consistent with step S3000 above, after determining the new vibration excitation source, a new speed correction value is obtained. Specifically, when the new vibration excitation source is an electromagnetic excitation source, the new speed correction value can be set to a first correction value corresponding to the electromagnetic excitation source based on the characteristics of the electromagnetic excitation source. When the new vibration excitation source is a wind turbine excitation source, the new speed correction value can be set to a second correction value corresponding to the wind turbine excitation source based on the characteristics of the wind turbine excitation source.

[0109] Step S5340: Correct the corrected operating speed again based on the new speed correction value.

[0110] It is understandable that, consistent with step S4000 above, after determining the new speed correction value, the corrected operating speed is corrected again based on the new speed correction value. For example, when the new vibration excitation source is an electromagnetic excitation source, the corrected operating speed of the motor is increased by the first correction value to obtain the corrected operating speed, so as to ensure that the corrected operating speed and vibration frequency do not satisfy the electromagnetic excitation source relationship.

[0111] Step S5350: Control the motor to run at the corrected operating speed until the second vibration amplitude is less than the preset vibration threshold.

[0112] It is understandable that, consistent with step S5000 above, after the operating speed is corrected again, the motor is controlled to run at the corrected operating speed so that the corrected operating speed and vibration frequency do not satisfy the target excitation source relationship, thus effectively mitigating the resonance phenomenon of the motor.

[0113] In practical applications, to avoid frequent adjustments to the motor's operating speed affecting the normal operation of the air conditioning system, after steps S5100 to S5300 are repeated twice (i.e., after the motor's operating speed has been corrected three times), if the current vibration amplitude of the motor is still greater than or equal to the preset vibration threshold, it is determined that the abnormal vibration of the motor is caused by other excitation sources, such as damage to motor components or excessive dust accumulation. At this time, the motor issues an error alarm, reminding the user to check the motor.

[0114] Reference Figure 11 A second aspect of the present invention also provides an operation control device 600, including at least one control processor 610 and a memory 620 for communicatively connecting to the at least one control processor 610; the memory 620 stores instructions executable by the at least one control processor 610, the instructions being executed by the at least one control processor 610 to enable the at least one control processor 610 to perform the motor control method of the first aspect embodiment.

[0115] The operation control device provided according to the embodiments of the present invention has at least the following beneficial effects: by acquiring the vibration frequency and operating speed when the motor has abnormal vibration, the vibration excitation source causing the abnormal vibration is determined, and then the speed correction value is determined. The operating speed is corrected according to the speed correction value, so that the operating speed of the motor can be automatically adjusted when the motor has abnormal vibration, avoiding resonance noise generated by the motor during operation and ensuring user comfort.

[0116] Thirdly, embodiments of the present invention provide an air conditioner, including the operation control device 600 of the second aspect embodiment.

[0117] The air conditioner provided according to the embodiments of the present invention has at least the following beneficial effects: by obtaining the vibration frequency and operating speed when the motor has abnormal vibration, the vibration excitation source causing the abnormal vibration is determined, and then the speed correction value is determined. The operating speed is corrected according to the speed correction value, so that the operating speed of the motor can be automatically adjusted when the motor has abnormal vibration, thereby avoiding resonance noise generated during the operation of the air conditioner and ensuring the comfort of the user.

[0118] Fourthly, embodiments of the present invention provide a computer-readable storage medium, characterized in that the computer-readable storage medium stores computer-executable instructions for causing a computer to perform a motor control method as described in the first aspect embodiment.

[0119] The computer-readable storage medium provided according to the embodiments of the present invention has at least the following beneficial effects: by acquiring the vibration frequency and operating speed when the motor has abnormal vibration, the vibration excitation source causing the abnormal vibration is determined, and then the speed correction value is determined. The operating speed is corrected according to the speed correction value, so that the operating speed of the motor can be automatically adjusted when the motor has abnormal vibration, avoiding resonance noise generated during the operation of the motor and ensuring user comfort.

[0120] It will be understood by those skilled in the art that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which may include computer storage media or non-transitory media and communication media or transient media. As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc DVD or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0121] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A method for controlling an electric motor, characterized in that, The method includes: Obtain the vibration frequency and operating speed of the motor when abnormal vibration occurs; Based on the vibration frequency and the operating speed, determine the vibration excitation source that causes the vibration abnormality; Determine the rotational speed correction value based on the vibration excitation source; The operating speed is corrected according to the speed correction value; The motor is controlled to operate at the corrected operating speed.

2. The method according to claim 1, characterized in that, The step of determining the vibration excitation source causing the abnormal vibration based on the vibration frequency and the operating speed includes: Determine the target excitation source relationship that the vibration frequency and the operating speed satisfy; The vibration excitation source causing the vibration abnormality is determined based on the target excitation source relationship.

3. The method according to claim 2, characterized in that, The determination of the target excitation source relationship satisfied by the vibration frequency and the operating speed includes: Obtain the electromagnetic excitation source relationship; Determine whether the vibration frequency and the operating speed satisfy the electromagnetic excitation source relationship; If the vibration frequency and the operating speed satisfy the electromagnetic excitation source relationship, the electromagnetic excitation source relationship is determined as the target excitation source relationship.

4. The method according to claim 3, characterized in that, The determination of the target excitation source relationship satisfied by the vibration frequency and the operating speed also includes: If the vibration frequency and the operating speed do not satisfy the electromagnetic excitation source relationship, obtain the first wind turbine excitation source relationship, the second wind turbine excitation source relationship, and the third wind turbine excitation source relationship, wherein the first wind turbine excitation source relationship corresponds to the first harmonic of the wind turbine, the second wind turbine excitation source relationship corresponds to the second harmonic of the wind turbine, and the third wind turbine excitation source relationship corresponds to the third harmonic of the wind turbine. Iterate through and determine whether the excitation source relationship of the first wind turbine, the excitation source relationship of the second wind turbine, and the excitation source relationship of the third wind turbine are satisfied by the vibration frequency and the operating speed; The one of the first wind turbine excitation source equation, the second wind turbine excitation source equation, and the third wind turbine excitation source equation that is satisfied by the vibration frequency and the operating speed is determined as the target excitation source equation.

5. The method according to claim 4, characterized in that, The first wind turbine excitation source formula, the second wind turbine excitation source formula, and the third wind turbine excitation source formula are all formulas used to determine whether the operating speed is within the target range. The target range corresponding to the first wind turbine excitation source relation includes a first upper bound and a first lower bound; the target range corresponding to the second wind turbine excitation source relation includes a second upper bound and a second lower bound; and the target range corresponding to the third wind turbine excitation source relation includes a third upper bound and a third lower bound. The first upper bound, the first lower bound, the second upper bound, the second lower bound, the third upper bound, and the third lower bound are all calculated based on the vibration frequency; the second lower bound is greater than the third upper bound, and the first lower bound is greater than the second upper bound.

6. The method according to claim 3, characterized in that, The determination of the target excitation source relationship satisfied by the vibration frequency and the operating speed also includes: If the vibration frequency and the operating speed do not satisfy the electromagnetic excitation source relationship, obtain the target wind turbine excitation source relationship. Determine whether the vibration frequency and the operating speed satisfy the target wind turbine excitation source relationship; If the vibration frequency and the operating speed satisfy the target wind turbine excitation source relationship, the target wind turbine excitation source relationship is determined as the target excitation source relationship.

7. The method according to claim 6, characterized in that, The formula for obtaining the excitation source relationship of the target wind turbine includes: Get the current frequency multiplication factor of the wind turbine; The relationship between the excitation source of the target wind turbine is determined based on the current frequency multiplication.

8. The method according to claim 6, characterized in that, Both the electromagnetic excitation source formula and the target wind turbine excitation source formula are used to determine whether the operating speed is within the target range. The target range corresponding to the electromagnetic excitation source relation includes a fourth upper bound and a fourth lower bound, and the target range corresponding to the target wind turbine excitation source relation includes a fifth upper bound and a fifth lower bound. The fourth upper bound, the fourth lower bound, the fifth upper bound, and the fifth lower bound are all calculated based on the vibration frequency; the fifth lower bound is greater than the fourth upper bound.

9. The method according to claim 1, characterized in that, Determining the rotational speed correction value based on the vibration excitation source includes: If the vibration excitation source is an electromagnetic excitation source, the first correction value is determined as the rotational speed correction value; Alternatively, if the vibration excitation source is a wind turbine excitation source, the second correction value is determined as the rotational speed correction value; Wherein, the first correction value is greater than the second correction value.

10. The method according to claim 1, characterized in that, Before obtaining the vibration frequency and operating speed of the motor when abnormal vibration occurs, the method further includes: Obtain the first vibration amplitude of the motor during operation; If the first vibration amplitude is greater than or equal to the preset vibration threshold, it is determined that the motor has a vibration abnormality.

11. The method according to claim 1, characterized in that, After controlling the motor to operate at the corrected operating speed, the method further includes: The second vibration amplitude of the motor after it has been running at the corrected operating speed is obtained; The second vibration amplitude is compared with a preset vibration threshold to obtain the comparison result; The motor is controlled based on the comparison results.

12. The method according to claim 11, characterized in that, The step of controlling the motor based on the comparison result includes: If the second vibration amplitude is greater than or equal to the preset vibration threshold, obtain the new vibration frequency of the motor after it runs at the corrected operating speed; Based on the new vibration frequency and the corrected operating speed, a new vibration excitation source is determined; A new rotational speed correction value is determined based on the new vibration excitation source; The operating speed is then corrected again based on the new speed correction value; The motor is controlled to operate at the revised operating speed until the second vibration amplitude is less than the preset vibration threshold.

13. An operation control device, characterized in that, The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the motor control method as described in any one of claims 1 to 12.

14. An air conditioner, characterized in that, Includes the operation control device as described in claim 13.

15. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for causing a computer to perform the motor control method as described in any one of claims 1 to 12.

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