Current loop bandwidth correction method and device, electronic equipment and medium

Abstract

The invention relates to a current loop bandwidth correction method and device, electronic equipment and a medium. The method comprises the steps that the first high-pressure side pressure of a refrigerant system at the current moment is obtained, and the outer loop temperature of a compressor at the current moment is obtained; in response to the fact that the outer ring temperature is larger than or equal to a preset outer ring temperature threshold value, the load change state of the compressor at the current moment is determined according to the first high-pressure side pressure and second high-pressure side pressure of the refrigerant system at the previous moment of the current moment; and correcting the current loop bandwidth of the compressor at the current moment according to the load change state. Therefore, the load change state of the compressor is determined according to the outer ring temperature and the high-pressure-side pressure of the refrigerant system, the current loop bandwidth of the compressor is corrected according to the load change state, the current loop bandwidth is made to be matched with the current running state of the compressor, accurate control over the current loop bandwidth is achieved, the running reliability of the compressor is improved, and the service life of the compressor is prolonged. And the operation effect is ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioners, and in particular to a method, device, electronic equipment and medium for correcting a current loop bandwidth. Background Art

[0002] During the operation of the air-conditioning compressor, the current loop bandwidth of the compressor is an important driving control parameter. Based on the appropriate current loop bandwidth, precise control of the compressor can be achieved. In the relevant technology, the parameter control and calculation method of the current loop bandwidth is relatively simple. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a method, device, electronic device and medium for correcting the bandwidth of a current loop.

[0004] According to a first aspect of an embodiment of the present disclosure, a method for correcting a current loop bandwidth is provided, comprising:

[0005] Obtaining a first high-pressure side pressure of the refrigerant system at the current moment, and obtaining an outer ring temperature of the compressor at the current moment;

[0006] In response to the outer ring temperature being greater than or equal to a preset outer ring temperature threshold, determining a load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at a moment before the current moment;

[0007] The current loop bandwidth of the compressor at the current moment is corrected according to the load change state.

[0008] In some embodiments, the correcting the current loop bandwidth of the compressor at the current moment according to the load change state includes:

[0009] Determine a correction value of the current loop bandwidth corresponding to the current moment according to the load change state;

[0010] The current loop bandwidth is corrected according to the correction value.

[0011] In some embodiments, determining the correction value of the current loop bandwidth corresponding to the current moment according to the load change state includes:

[0012] In response to the load change state being a first preset state, determining the correction value to be a preset first bandwidth correction value;

[0013] In response to the load change state being a second preset state, determining the correction value to be a preset second bandwidth correction value;

[0014] The second bandwidth correction value is smaller than the first bandwidth correction value.

[0015] In some embodiments, determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment includes:

[0016] Determine the pressure change rate at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure;

[0017] In response to the pressure change rate being greater than or equal to a preset first rate threshold, the load change state is determined to be a first preset state.

[0018] In some embodiments, determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment includes:

[0019] Determine the pressure change rate at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure;

[0020] In response to the pressure change rate being less than a preset first rate threshold and greater than or equal to a preset second rate threshold, the load change state is determined to be a second preset state, wherein the second rate threshold is less than the first rate threshold.

[0021] In some embodiments, obtaining the first high-pressure side pressure of the refrigerant system at the current moment, and obtaining the outer ring temperature of the compressor at the current moment, include:

[0022] Obtaining a high-pressure side pressure signal of the refrigerant system and an outer ring temperature signal of the compressor;

[0023] The high-pressure side pressure signal and the outer ring temperature signal are filtered and analog-to-digital converted to obtain the first high-pressure side pressure and the outer ring temperature.

[0024] In some embodiments, before determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment at the current moment, the method further includes:

[0025] Obtaining the operating time of the compressor;

[0026] The step of determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment includes:

[0027] In response to the operating time being greater than or equal to a preset operating time threshold, the load change state is determined according to the first high-pressure side pressure and the second high-pressure side pressure.

[0028] According to a second aspect of an embodiment of the present disclosure, a current loop bandwidth correction device is provided, comprising:

[0029] A first acquisition module is configured to acquire a first high-pressure side pressure of the refrigerant system at a current moment, and acquire an outer ring temperature of the compressor at the current moment;

[0030] a determination module configured to determine, in response to the outer ring temperature being greater than or equal to a preset outer ring temperature threshold, a load change state of the compressor at the current moment according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a moment before the current moment;

[0031] The correction module is configured to correct the current loop bandwidth of the compressor at a current moment according to the load change state.

[0032] According to a third aspect of an embodiment of the present disclosure, there is provided an electronic device, including:

[0033] processor;

[0034] a memory for storing processor-executable instructions;

[0035] Wherein, the processor is configured to run the executable instructions to implement the steps of the current loop bandwidth correction method provided in any embodiment of the first aspect of the present disclosure.

[0036] According to a fourth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the current loop bandwidth correction method provided in any embodiment of the first aspect of the present disclosure are implemented.

[0037] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: obtaining the first high-pressure side pressure of the refrigerant system at the current moment, and obtaining the outer ring temperature of the compressor at the current moment; in response to the outer ring temperature being greater than or equal to the preset outer ring temperature threshold, determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment; and correcting the current loop bandwidth of the compressor at the current moment according to the load change state. Thus, the load change state of the compressor is determined according to the outer ring temperature and the high-pressure side pressure of the refrigerant system, and the current loop bandwidth of the compressor is corrected according to the load change state, so that the current loop bandwidth adapts to the current operating state of the compressor, realizes precise control of the current loop bandwidth, improves the reliability of the compressor operation, and ensures its operating effect.

[0038] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0040] Figure 1 The figure is a flow chart of a method for correcting a current loop bandwidth according to an exemplary embodiment.

[0041] Figure 2 The figure is a flow chart of another method for correcting the current loop bandwidth according to an exemplary embodiment.

[0042] Figure 3 This is a flow chart of an implementation method of step S231 in the embodiment of the present disclosure.

[0043] Figure 4 This is a flow chart of an implementation method of step S220 in the embodiment of the present disclosure.

[0044] Figure 5 is a flow chart of yet another method for correcting current loop bandwidth according to an exemplary embodiment.

[0045] Figure 6 This is a flow chart of an implementation method of step S120 in the embodiment of the present disclosure.

[0046] Figure 7 The figure is a flow chart of yet another method for correcting current loop bandwidth according to an exemplary embodiment.

[0047] Figure 8 The figure is a block diagram of a device for correcting a current loop bandwidth according to an exemplary embodiment.

[0048] Fig. 9 The diagram is a schematic structural diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0049] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0050] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the relevant data protection laws and policies of the country where the device is located and with the authorization given by the owner of the corresponding device.

[0051] Figure 1 FIG. 1 is a flow chart showing a method for correcting a current loop bandwidth according to an exemplary embodiment. Figure 1 As shown, the method includes the following steps.

[0052] Step S110, obtaining the first high-pressure side pressure of the refrigerant system at the current moment, and obtaining the outer ring temperature of the compressor at the current moment.

[0053] The outer ring temperature may also be referred to as the outdoor ambient temperature, but is not limited thereto.

[0054] In some embodiments, the method may be applied in an air conditioner.

[0055] Among them, corresponding to different modes of the air conditioner, such as cooling mode and heating mode, the refrigerant flow direction is different; in cooling mode, the exhaust pipe of the compressor is connected to the high-pressure side of the refrigerant system; in heating mode, the return air pipe of the compressor is connected to the high-pressure side of the refrigerant system.

[0056] In some embodiments, the pipeline of the compressor corresponding to the high-pressure side of the refrigerant system is determined according to the mode of the air conditioner, and the refrigerant pressure corresponding to the pipeline is obtained to determine the first high-pressure side pressure of the refrigerant system; or, in some embodiments, the refrigerant pressures corresponding to the exhaust pipeline and the return pipeline of the compressor are obtained respectively, and the first high-pressure side pressure of the refrigerant system is determined according to the higher corresponding pressure value.

[0057] It should be noted that in the embodiment of the present disclosure, there is no limitation on the specific method of obtaining the first high-pressure side pressure of the refrigerant system and the outer ring temperature of the compressor; illustratively, a pressure sensor can be used for sampling to obtain the first high-pressure side pressure of the refrigerant system, and a temperature sensor can be used for sampling to obtain the outer ring temperature of the compressor.

[0058] In some embodiments, the high-pressure side pressure of the refrigerant system and the outer ring temperature of the compressor are obtained and recorded at preset time intervals; in some embodiments, the preset time interval may be 1 minute.

[0059] Step S120, in response to the outer ring temperature being greater than or equal to the preset outer ring temperature threshold, determine the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment.

[0060] In some embodiments, the load change state of the compressor represents the load change of the compressor. For example, it may indicate that the load increases too fast, the load increases relatively fast, the load increases at a moderate rate, or the load fluctuates slightly.

[0061] In some embodiments, the load change state of the compressor at the current moment may be determined according to the pressure difference between the first high-pressure side pressure and the second high-pressure side pressure.

[0062] In some embodiments, the outer ring temperature threshold may be 50°C or greater than 50°C; or, in some embodiments, the outer ring temperature threshold may be 53°C or greater than 53°C.

[0063] Step S130: correcting the current loop bandwidth of the compressor at the current moment according to the load change state.

[0064] The current loop bandwidth is corrected accordingly according to different load change states of the compressor.

[0065] Among them, the current loop, also known as the current feedback system, generally refers to the way of connecting the output current to the processing link by positive feedback or negative feedback, and improving the performance of the system by improving the stability of the current; the current loop bandwidth is a drive control parameter, which indicates the maximum sinusoidal signal frequency that the current loop can respond to. In the drive control of compressors and air conditioners, the larger the current loop bandwidth, the faster the current loop responds to the corresponding instructions. Under different load states and load change states of the compressor, its current loop bandwidth may have different adaptive parameter values.

[0066] The embodiment of the present disclosure provides a method for correcting the current loop bandwidth, including: obtaining the first high-pressure side pressure of the refrigerant system at the current moment, and obtaining the outer ring temperature of the compressor at the current moment; in response to the outer ring temperature being greater than or equal to the preset outer ring temperature threshold, determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment; and correcting the current loop bandwidth of the compressor at the current moment according to the load change state. Thus, the load change state of the compressor is determined according to the outer ring temperature and the high-pressure side pressure of the refrigerant system, and the current loop bandwidth of the compressor is corrected according to the load change state, so that the current loop bandwidth is adapted to the current operating state of the compressor. Compared with the lack of a solution for dynamically calculating and correcting the current loop bandwidth in the related art, the solution of the embodiment of the present disclosure can correspond to different load change states, dynamically determine the adapted current loop bandwidth, realize precise control of the current loop bandwidth, improve the reliability of the compressor operation, and ensure its operating effect.

[0067] Figure 2 FIG. 1 is a flow chart showing another method for correcting the current loop bandwidth according to an exemplary embodiment. Figure 2 As shown, the method includes the following steps.

[0068] Step S210, obtaining the first high-pressure side pressure of the refrigerant system at the current moment, and obtaining the outer ring temperature of the compressor at the current moment.

[0069] Step S220, in response to the outer ring temperature being greater than or equal to the preset outer ring temperature threshold, determine the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment.

[0070] Step S231: determine a correction value corresponding to the current loop bandwidth at the current moment according to the load change state.

[0071] Step S232: correct the current loop bandwidth according to the correction value.

[0072] The corresponding correction value is determined according to different load change states of the compressor, and the current loop bandwidth is corrected according to the determined correction value; the correction value may also be called a correction threshold, which is not limited thereto.

[0073] In some embodiments, the target current loop bandwidth is determined based on the current loop bandwidth of the compressor at the current moment and the correction value to correct the current loop bandwidth at the current moment; in some embodiments, the target current loop bandwidth is determined based on the sum of the current loop bandwidth of the compressor at the current moment and the correction value.

[0074] Therefore, based on the scheme of the embodiment of the present disclosure, the load change state of the compressor can be determined according to the external ring temperature and the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system, and the corresponding correction value can be determined according to the load change state, so as to dynamically correct the current loop bandwidth of the compressor, so that the current loop bandwidth adapts to the current operating state of the compressor, realizes precise control of the current loop bandwidth, improves the reliability of the compressor operation, and ensures its operating effect.

[0075] Figure 3 is a flowchart of an implementation method of step S231 in the embodiment of the present disclosure. Figure 2 An alternative embodiment of the method shown; Figure 3 As shown, step S231, determining the correction value corresponding to the current loop bandwidth at the current moment according to the load change state, includes:

[0076] Step S2311: In response to the load change state being a first preset state, determining that the correction value is a preset first bandwidth correction value.

[0077] Step S2312: In response to the load change state being the second preset state, determining that the correction value is a preset second bandwidth correction value.

[0078] The second bandwidth correction value is smaller than the first bandwidth correction value.

[0079] Among them, the corresponding correction value is determined according to different load change states; the bandwidth correction value can also be called a bandwidth correction threshold, which is not limited to this.

[0080] Figure 4 FIG. 2 is a flow chart of an implementation method of step S220 in the embodiment of the present disclosure. Figure 4 As shown, in step S220, the step of determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment at the current moment includes:

[0081] Step S221, determining the pressure change rate at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure.

[0082] The pressure change rate of the refrigerant system at the current moment is determined according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment before the current moment.

[0083] In some embodiments, the pressure change rate at the current moment is determined based on the first high-pressure side pressure, the second high-pressure side pressure, and the time difference between the current moment and the previous moment; in some embodiments, the high-pressure side pressure of the refrigerant system is obtained once at a preset time interval, and the pressure change rate at the current moment can be determined based on the first high-pressure side pressure, the second high-pressure side pressure, and the preset time interval.

[0084] Step S221: In response to the pressure change rate being greater than or equal to a preset first rate threshold, determining that the load change state is a first preset state.

[0085] In some embodiments, the first preset state indicates that the compressor load increases too fast or the load increases relatively fast.

[0086] In some embodiments, the first rate threshold value may be 0.7 Mpa / min or greater than 0.7 Mpa / min; in some embodiments, the first bandwidth correction value may be 700 or greater than 700.

[0087] In some embodiments, Figure 4 As shown, in step S220, the step of determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment at the current moment includes:

[0088] Step S222: In response to the pressure change rate being less than a preset first rate threshold and greater than or equal to a preset second rate threshold, determining that the load change state is a second preset state.

[0089] The second rate threshold is smaller than the first rate threshold.

[0090] In some embodiments, the first preset state indicates that the compressor load increases too fast, the second preset state indicates that the compressor load increases relatively fast, and the second bandwidth correction value is less than the first bandwidth correction value.

[0091] In some embodiments, the second rate threshold may be 0.3 Mpa / min or greater than 0.3 Mpa / min; in some embodiments, the second bandwidth correction value may be 300 or greater than 300.

[0092] In some embodiments, in step S220, the step of determining the load change state of the compressor at the current moment based on the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment before the current moment includes: in response to the pressure change rate being less than the second rate threshold, determining that the load change state is a third preset state, wherein, in response to the load change state being the third preset state, determining not to correct the current loop bandwidth, or determining the correction value to be zero.

[0093] It can be understood that the above implementation can also be applied to step S120 and other associated steps and embodiments.

[0094] Therefore, based on the scheme of the embodiment of the present disclosure, the pressure change rate can be determined according to the high-pressure side pressure of the refrigerant system, and the current load change state of the compressor can be determined accordingly. The corresponding correction value is determined for different load change states, so as to dynamically correct the current loop bandwidth of the compressor.

[0095] Figure 5 FIG. 1 is a flow chart of another method for correcting the current loop bandwidth according to an exemplary embodiment. Figure 5 As shown, the method includes the following steps.

[0096] Step S311, obtaining the high-pressure side pressure signal of the refrigerant system and obtaining the outer ring temperature signal of the compressor.

[0097] It should be noted that in the embodiment of the present disclosure, the specific method for obtaining the outer ring temperature signal and the high-pressure side pressure signal is not limited; illustratively, the sampling signal transmitted back by the air conditioner outdoor unit mainboard after sampling based on the temperature sensor and the pressure sensor can be received to obtain the outer ring temperature signal and the high-pressure side pressure signal.

[0098] Step S312: filter and perform analog-to-digital conversion on the high-pressure side pressure signal and the outer ring temperature signal to obtain a first high-pressure side pressure and an outer ring temperature.

[0099] Among them, the high-pressure side pressure signal and the outer ring temperature signal are processed respectively to obtain the first high-pressure side pressure and the outer ring temperature; in some embodiments, the two are sampled multiple times and averaged for filtering processing. Exemplarily, the two are sampled 32 times and averaged respectively.

[0100] Step S320, in response to the outer ring temperature being greater than or equal to the preset outer ring temperature threshold, determine the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment.

[0101] Step S330: correct the current loop bandwidth of the compressor at the current moment according to the load change state.

[0102] Figure 6 FIG. 1 is a flow chart of an implementation method of step S120 in the embodiment of the present disclosure. Figure 6 As shown, in step S120, before the step of determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment at the current moment, the step includes:

[0103] Step S123: Obtain the running time of the compressor.

[0104] It should be noted that, in the embodiment of the present disclosure, there is no limitation on the specific method for obtaining the operating time of the compressor; illustratively, the operating time of the compressor can be obtained based on a timer or the like.

[0105] In step S120, the step of determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment at the current moment includes:

[0106] Step S124: in response to the operating time being greater than or equal to a preset operating time threshold, determining a load change state according to the first high-pressure side pressure and the second high-pressure side pressure.

[0107] Among them, if the running time is greater than or equal to the preset running time threshold, it means that the compressor is in a stable operation stage, and the overall system load tends to be stable. The load change state can be determined according to the first high-pressure side pressure and the second high-pressure side pressure, and the current loop bandwidth of the compressor can be controlled.

[0108] In some embodiments, the running time threshold value may be 10 minutes or greater; or, in some embodiments, the running time threshold value may be 12 minutes or greater.

[0109] It can be understood that the above implementation can also be applied to step S220, step S320 and other steps and embodiments associated with the above steps.

[0110] Therefore, based on the running time of the compressor, the current loop bandwidth of the compressor is dynamically corrected after the compressor is running stably, so as to ensure the reliability and stability of the current loop bandwidth correction.

[0111] The current loop bandwidth correction method provided by the present disclosure is described below in combination with practical applications.

[0112] Figure 7 FIG. 1 is a flow chart of another method for correcting the current loop bandwidth according to an exemplary embodiment. Figure 7 As shown, the method includes the following steps.

[0113] Step S411, obtaining a high-pressure side pressure signal of the refrigerant system, and obtaining an outer ring temperature signal of the compressor.

[0114] Step S412: filter and perform analog-to-digital conversion on the high-pressure side pressure signal and the outer ring temperature signal to obtain a first high-pressure side pressure and an outer ring temperature.

[0115] Among them, the high-pressure side pressure is acquired and recorded once at a preset time interval to obtain the first high-pressure side pressure corresponding to the acquisition and recording process, that is, the first high-pressure side pressure at the current moment; exemplarily, the preset time interval is 1 minute, that is, the interval between the current moment and the previous moment is 1 minute.

[0116] Step S413: Obtain the operating time of the compressor.

[0117] Step S414: determine whether the outer ring temperature is greater than or equal to a preset outer ring temperature threshold, and whether the operating time is greater than or equal to a preset operating time threshold.

[0118] Exemplarily, the outer ring temperature threshold is 53° C., and the operating time threshold is 12 minutes.

[0119] In step S414, if the outer ring temperature is greater than or equal to the outer ring temperature threshold, and the operating time is greater than or equal to the operating time threshold, execute step S421; if the outer ring temperature is less than the outer ring temperature threshold, or the operating time is less than the operating time threshold, maintain the current current loop bandwidth unchanged, continue to execute step S412, wait until the next moment, obtain and record the first high-pressure side pressure of the refrigerant system, obtain the outer ring temperature of the compressor, and update the previously obtained compressor operating time.

[0120] Step S421, determining the pressure change rate at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment before the current moment.

[0121] The pressure change rate at the current moment is determined according to the difference between the first high-pressure side pressure and the second high-pressure side pressure, and the time difference between the current moment and the previous moment.

[0122] Step S422: determine whether the pressure change rate is greater than or equal to a preset first rate threshold.

[0123] Exemplarily, the first rate threshold value is 0.7 MPa / min.

[0124] In step S422, if the pressure change rate is greater than or equal to the first rate threshold, step S4311a is executed; if the pressure change rate is less than the first rate threshold, step S423 is executed.

[0125] Step S4311a: Determine that the correction value is a preset first bandwidth correction value.

[0126] Exemplarily, the first bandwidth correction value is 700.

[0127] Step S4312a, correct the current loop bandwidth according to the correction value.

[0128] Step S423: determine whether the pressure change rate is greater than or equal to a preset second rate threshold.

[0129] In step S423, if the pressure change rate is greater than or equal to the second rate threshold, execute step S4311b; if the pressure change rate is less than the second rate threshold, maintain the current current loop bandwidth unchanged, continue to execute step S412, wait until the next moment, obtain and record the first high-pressure side pressure of the refrigerant system, obtain the outer ring temperature of the compressor, and update the previously obtained compressor operating time.

[0130] Step S4311b: Determine that the correction value is a preset second bandwidth correction value.

[0131] Exemplarily, the second bandwidth correction value is 300.

[0132] Step S4312b, correct the current loop bandwidth according to the correction value.

[0133] Figure 8 FIG. 1 is a block diagram of a current loop bandwidth correction device according to an exemplary embodiment. Figure 8 As shown, the current loop bandwidth correction device 70 includes: a first acquisition module 71 , a determination module 72 and a correction module 73 .

[0134] The first acquisition module 71 is configured to acquire the first high-pressure side pressure of the refrigerant system at the current moment, and acquire the outer ring temperature of the compressor at the current moment.

[0135] The determination module 72 is configured to determine the load change state of the compressor at a current moment in response to the outer ring temperature being greater than or equal to a preset outer ring temperature threshold, based on the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at a previous moment at the current moment.

[0136] The correction module 73 is configured to correct the current loop bandwidth of the compressor at the current moment according to the load change state.

[0137] In some embodiments, the correction module 73 is configured to determine a correction value corresponding to the current loop bandwidth at the current moment according to the load change state; and correct the current loop bandwidth according to the correction value.

[0138] In some embodiments, the correction module 73 is configured to determine that the correction value is a preset first bandwidth correction value in response to the load change state being a first preset state; and to determine that the correction value is a preset second bandwidth correction value in response to the load change state being a second preset state; wherein the second bandwidth correction value is less than the first bandwidth correction value.

[0139] In some embodiments, the determination module 72 is configured to determine that the load change state is a first preset state in response to the pressure change rate being greater than or equal to a preset first rate threshold.

[0140] In some embodiments, the determination module 72 is configured to determine that the load change state is a second preset state in response to the pressure change rate being less than a preset first rate threshold and greater than or equal to a preset second rate threshold, wherein the second rate threshold is less than the first rate threshold.

[0141] In some embodiments, the first acquisition module 71 is configured to obtain the high-pressure side pressure signal of the refrigerant system and the outer ring temperature signal of the compressor; filter and perform analog-to-digital conversion on the high-pressure side pressure signal and the outer ring temperature signal to obtain the first high-pressure side pressure and the outer ring temperature.

[0142] In some embodiments, the current loop bandwidth correction device 70 further includes: a second acquisition module.

[0143] The second acquisition module is configured to acquire the running time of the compressor.

[0144] The determination module 72 is configured to determine a load change state according to the first high-pressure side pressure and the second high-pressure side pressure in response to the operating time being greater than or equal to a preset operating time threshold.

[0145] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0146] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon. When the program instructions are executed by a processor, the steps of the current loop bandwidth correction method provided by the present disclosure are implemented.

[0147] Fig. 9 FIG. 1 is a schematic diagram showing the structure of an electronic device according to an exemplary embodiment. Fig. 9 As shown, the electronic device may be an air conditioner, and the electronic device includes:

[0148] One or more processors 801;

[0149] A memory 802 having one or more programs stored thereon, and when the one or more programs are executed by the one or more processors, the one or more processors implement the current loop bandwidth correction method as described in any of the above embodiments;

[0150] One or more I / O interfaces 803 are connected between the processor and the memory and are configured to implement information exchange between the processor and the memory.

[0151] Among them, the processor 801 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 802 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (FLASH); the I / O interface (read-write interface) 803 is connected between the processor 801 and the memory 802, and can realize information interaction between the processor 801 and the memory 802, including but not limited to a data bus (Bus), etc.

[0152] In some embodiments, the processor 801 , the memory 802 , and the I / O interface 803 are connected to each other via a bus 804 , and further connected to other components of the computing device.

[0153] In another exemplary embodiment, a computer program product is also provided, which includes a computer program that can be executed by a programmable device, and the computer program has a code portion for executing the above-mentioned current loop bandwidth correction method when executed by the programmable device. After considering the specification and practicing the present disclosure, those skilled in the art will easily think of other embodiments of the present disclosure. The present disclosure is intended to cover any variations, uses or adaptive changes of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the technical field that are not disclosed in the present disclosure. The description and examples are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0154] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for correcting the current loop bandwidth. It is characterized in that include: Obtaining a first high-pressure side pressure of the refrigerant system at the current moment, and obtaining an outer ring temperature of the compressor at the current moment; In response to the outer ring temperature being greater than or equal to a preset outer ring temperature threshold, determining a load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at a moment before the current moment; The current loop bandwidth of the compressor at the current moment is corrected according to the load change state.

2. The correction method according to claim 1, It is characterized in that The correcting the current loop bandwidth of the compressor at the current moment according to the load change state includes: Determine a correction value of the current loop bandwidth corresponding to the current moment according to the load change state; The current loop bandwidth is corrected according to the correction value.

3. The correction method according to claim 2, It is characterized in that The determining, according to the load change state, a correction value of the current loop bandwidth corresponding to the current moment, comprises: In response to the load change state being a first preset state, determining the correction value to be a preset first bandwidth correction value; In response to the load change state being a second preset state, determining the correction value to be a preset second bandwidth correction value; The second bandwidth correction value is smaller than the first bandwidth correction value.

4. The correction method according to claim 1, It is characterized in that The step of determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment includes: Determine the pressure change rate at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure; In response to the pressure change rate being greater than or equal to a preset first rate threshold, the load change state is determined to be a first preset state.

5. The correction method according to claim 1, It is characterized in that The step of determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment includes: Determine the pressure change rate at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure; In response to the pressure change rate being less than a preset first rate threshold and greater than or equal to a preset second rate threshold, the load change state is determined to be a second preset state, wherein the second rate threshold is less than the first rate threshold.

6. The correction method according to claim 1, It is characterized in that The obtaining of the first high-pressure side pressure of the refrigerant system at the current moment and the obtaining of the outer ring temperature of the compressor at the current moment include: Obtaining a high-pressure side pressure signal of the refrigerant system and an outer ring temperature signal of the compressor; The high-pressure side pressure signal and the outer ring temperature signal are filtered and analog-to-digital converted to obtain the first high-pressure side pressure and the outer ring temperature.

7. The correction method according to any one of claims 1 to 6, It is characterized in that Before determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment, the method further includes: Obtaining the operating time of the compressor; The step of determining the load change state of the compressor at the current moment according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous moment of the current moment includes: In response to the operating time being greater than or equal to a preset operating time threshold, the load change state is determined according to the first high-pressure side pressure and the second high-pressure side pressure.

8. A device for correcting the bandwidth of a current loop, It is characterized in that include: A first acquisition module is configured to acquire a first high-pressure side pressure of the refrigerant system at a current moment, and acquire an outer ring temperature of the compressor at the current moment; a determination module configured to determine, in response to the outer ring temperature being greater than or equal to a preset outer ring temperature threshold, a load change state of the compressor at the current moment according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a previous moment at the current moment; The correction module is configured to correct the current loop bandwidth of the compressor at a current moment according to the load change state.

9. An electronic device, It is characterized in that include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to run the executable instructions to implement the steps of the current loop bandwidth correction method according to any one of claims 1 to 7.

10. A computer-readable storage medium having computer program instructions stored thereon, It is characterized in that When the program instructions are executed by a processor, the steps of the current loop bandwidth correction method described in any one of claims 1 to 7 are implemented.

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