Method and device for correcting current loop bandwidth, electronic equipment and medium

Abstract

The present disclosure relates to a current loop bandwidth correction method and device, electronic equipment and medium, the method comprising: obtaining a first high-pressure side pressure of a refrigerant system at a current time, and obtaining an outer ring temperature of a compressor at the current time; 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 time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a previous time of the current time; and correcting a current loop bandwidth of the compressor at the current time 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 operating state of the compressor, precise control of the current loop bandwidth is achieved, the reliability of the compressor operation is improved, and the operating effect is ensured.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air conditioners, and particularly relates to a current loop bandwidth correction method and device, electronic equipment and medium. BACKGROUND

[0002] In the operation process of an air conditioner compressor, the current loop bandwidth of the compressor is an important driving control parameter. Based on a suitable current loop bandwidth, accurate control of the compressor can be achieved. In related technologies, the parameter control and calculation method of the current loop bandwidth is relatively single. SUMMARY

[0003] To overcome the problems in related technologies, the present disclosure provides a current loop bandwidth correction method, device, electronic equipment and medium.

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

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

[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 time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a previous time of the current time;

[0007] correcting a current loop bandwidth of the compressor at the current time according to the load change state.

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

[0009] determining a correction value corresponding to the current loop bandwidth at the current time according to the load change state;

[0010] correcting the current loop bandwidth according to the correction value.

[0011] In some embodiments, the determining the correction value corresponding to the current loop bandwidth at the current time according to the load change state comprises:

[0012] in response to the load change state being a first preset state, determining that the correction value is a preset first bandwidth correction value;

[0013] in response to the load change state being a second preset state, determining that the correction value is a preset second bandwidth correction value;

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

[0015] In some embodiments, the determining the load change state of the compressor at the current time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a time point preceding the current time comprises:

[0016] determining a pressure change rate at the current time 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, determining the load change state as a first preset state.

[0018] In some embodiments, the determining the load change state of the compressor at the current time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a time point preceding the current time comprises:

[0019] determining a pressure change rate at the current time 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, determining the load change state as a second preset state, wherein the second rate threshold is less than the first rate threshold.

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

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

[0023] filtering and analog-digital converting 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.

[0024] In some embodiments, before the determining the load change state of the compressor at the current time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a time point preceding the current time, the method further comprises:

[0025] obtaining an operation time of the compressor;

[0026] the determining the load change state of the compressor at the current time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a time point preceding the current time comprises:

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

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

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

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

[0031] A correcting module is configured to correct a current loop bandwidth of the compressor at the current time according to the load change state.

[0032] According to a third aspect of the embodiments of the present disclosure, an electronic device is provided, comprising:

[0033] A processor;

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

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

[0036] According to a fourth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided, which stores computer program instructions, and the program instructions are executed by a processor to implement the steps of the current loop bandwidth correction method provided in any one of the embodiments of the first aspect of the present disclosure.

[0037] The technical scheme provided by the embodiment of the present disclosure can have the following beneficial effects: a first high-pressure side pressure of the refrigerant system at a current moment is obtained, and an outer ring temperature of the compressor at the current moment is obtained; in response to the outer ring temperature being greater than or equal to a preset outer ring temperature threshold value, a load change state of the compressor at the current moment is determined according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a previous moment of the current moment; and a current loop bandwidth of the compressor at the current moment is corrected 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, the current loop bandwidth of the compressor is corrected according to the load change state, the current loop bandwidth is adapted to the operating state of the compressor, precise control of the current loop bandwidth is achieved, the reliability of the operation of the compressor is improved, and the operating effect is ensured.

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

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

[0040] Figure 1 is a flowchart of a current loop bandwidth correction method according to an exemplary embodiment.

[0041] Figure 2 is a flowchart of another current loop bandwidth correction method according to an exemplary embodiment.

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

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

[0044] Figure 5 is a flowchart of still another current loop bandwidth correction method according to an exemplary embodiment.

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

[0046] Figure 7 is a flowchart of still another current loop bandwidth correction method according to an exemplary embodiment.

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

[0048] Figure 9 is a structural schematic diagram of an electronic device according to an example embodiment. DETAILED DESCRIPTION

[0049] The example embodiments will be described in detail herein with reference to the attached drawings. In the following description, unless otherwise indicated, like numbers in the different drawings represent the same or similar elements. The following example embodiments described in the detailed description are not meant to be an all-inclusive description of all aspects of the disclosure. Rather, they are merely example devices and methods consistent with some aspects of the disclosure as detailed in the appended claims.

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

[0051] Figure 1 is a flowchart of a method for correcting the bandwidth of a current loop according to an example embodiment. As shown in Figure 1 the method includes the following steps.

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

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

[0054] In some embodiments, the method can be applied to an air conditioner.

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

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

[0057] It should be noted that the specific manner of obtaining the first high-pressure side pressure of the refrigerant system and obtaining the outer ring temperature of the compressor is not limited in the embodiments of the present disclosure; for example, the first high-pressure side pressure of the refrigerant system can be sampled by using a pressure sensor, and the outer ring temperature of the compressor can be sampled by using a temperature sensor.

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

[0059] In step S120, in response to the outer ring temperature being greater than or equal to a preset outer ring temperature threshold, the load change state of the compressor at the current time is determined according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the last time of the current time.

[0060] In some embodiments, the load change state of the compressor represents the load change condition of the compressor, for example, it can represent that the load increases too fast, the load increases fast, the load increase rate is moderate or the load fluctuation is small, etc.

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

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

[0063] In step S130, the current loop bandwidth of the compressor at the current time is corrected according to the load change state.

[0064] In which, the correction of the current loop bandwidth is performed according to different load change states of the compressor.

[0065] In which, 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 using positive feedback or negative feedback, to improve the stability of the current and improve the performance of the system; the current loop bandwidth is a kind of driving control parameter, which represents the maximum sinusoidal signal frequency that the current loop can respond to, in the driving control of the compressor and the air conditioner, the larger the current loop bandwidth, the faster the current loop responds to the corresponding command. Under different load states and load change states of the compressor, the current loop bandwidth may have different adaptive parameter values.

[0066] The method for correcting the current loop bandwidth provided by the embodiments of the present disclosure comprises: obtaining a first high-pressure side pressure of a refrigerant system at a 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 a second high-pressure side pressure of the refrigerant system at a 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 operating state of the compressor. Compared with the related art in which the current loop bandwidth is not dynamically calculated and corrected, the embodiments of the present disclosure can dynamically determine the adapted current loop bandwidth corresponding to different load change states, achieve accurate control of the current loop bandwidth, improve the reliability of the operation of the compressor, and ensure the operating effect.

[0067] Figure 2 is a flowchart of another method for correcting a current loop bandwidth according to an exemplary embodiment. As shown in Figure 2 , the method comprises the following steps.

[0068] In step S210, a first high-pressure side pressure of a refrigerant system at a current moment is obtained, and an outer ring temperature of the compressor at the current moment is obtained.

[0069] In step S220, 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 is determined according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a previous moment of the current moment.

[0070] In step S231, a correction value corresponding to the current moment of the current loop bandwidth is determined according to the load change state.

[0071] In step S232, the current loop bandwidth is corrected according to the correction value.

[0072] In some embodiments, the target current loop bandwidth is determined according to the current loop bandwidth of the compressor at the current moment and the correction value, so as to correct the current loop bandwidth at the current moment; in some embodiments, the target current loop bandwidth is determined according to the sum of the current loop bandwidth of the compressor at the current moment and the correction value.

[0073]

[0074] ​Therefore, based on the scheme of the embodiments of the present disclosure, the load change state of the compressor can be determined according to the outer 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 is 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 is adapted to the current operation state of the compressor, the precise control of the current loop bandwidth is realized, the reliability of the compressor operation is improved, and the operation effect is ensured.

[0075] Figure 3 An implementation method flowchart of step S231 in the embodiments of the present disclosure is shown. The method is based on Figure 2 An optional implementation scheme of the method is shown in FIG. 8; as shown in Figure 3 Step S231, determining the correction value corresponding to the current time of the current loop bandwidth according to the load change state, includes:

[0076] Step S2311, in response to the load change state being the 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] Wherein, the second bandwidth correction value is less than the first bandwidth correction value.

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

[0080] Figure 4 An implementation method flowchart of step S220 in the embodiments of the present disclosure is shown. As shown in Figure 4 In step S220, according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous time of the current time, the step of determining the load change state of the compressor at the current time includes:

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

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

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

[0084] In step S221, in response to the pressure change rate being greater than or equal to the first preset rate threshold, the load change state is determined as the first preset state.

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

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

[0087] In some embodiments, as shown in FIG. 2, in step S220, the step of determining the load change state of the compressor at the current time according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous time of the current time includes: Figure 4

[0088] In step S222, in response to the pressure change rate being less than the first preset rate threshold and greater than or equal to a second preset rate threshold, the load change state is determined as a second preset state.

[0089] In some embodiments, the second rate threshold is less than the first rate threshold.

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

[0091] In some embodiments, the second rate threshold can be 0.3 Mpa / min or greater than 0.3 Mpa / min; in some embodiments, the second bandwidth correction value can 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 time according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous time of the current time includes: in response to the pressure change rate being less than the second rate threshold, determining the load change state as a third preset state, and in response to the load change state being the third preset state, determining that the current loop bandwidth is not corrected or the correction value is determined as zero.

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

[0094] Therefore, based on the scheme of the embodiments 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 is determined according to the pressure change rate. The corresponding correction value is determined for different load change states, and the current loop bandwidth of the compressor is dynamically corrected.

[0095] Figure 5 is a flow chart of another current loop bandwidth correction method according to an exemplary embodiment. As shown in Figure 5 , the method comprises the following steps.

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

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

[0098] Step S312, filtering and analog-digital converting 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 respectively sampled multiple times to obtain the average value for filtering processing, for example, the two are respectively sampled 32 times and the average value is obtained.

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

[0101] Step S330, correcting the current loop bandwidth of the compressor at the current time according to the load change state.

[0102] Figure 6 is a flow chart of an embodiment method of step S120 in the embodiments of the present disclosure. As shown in Figure 6 , in step S120, before the step of determining the load change state of the compressor at the current time according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the last time of the current time, it comprises:

[0103] Step S123, obtaining the running time of the compressor.

[0104] It should be noted that the specific manner of obtaining the running time of the compressor is not limited in the embodiments of the present disclosure; for example, the running 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 time according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous time of the current time comprises:

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

[0107] Wherein, the running time greater than or equal to the preset running time threshold indicates that the compressor is in a stable running stage, and the overall load of the system tends to be stable, so 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 is controlled.

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

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

[0110] Therefore, based on the running time of the compressor, the current loop bandwidth of the compressor is dynamically corrected after the compressor is in stable operation, thereby ensuring the reliability and stability of the current loop bandwidth correction.

[0111] The current loop bandwidth correction method provided by the present disclosure will be described in combination with actual applications.

[0112] Figure 7 is another flowchart of a current loop bandwidth correction method according to an exemplary embodiment. As shown in Figure 7 The method comprises 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, filtering and analog-to-digital converting 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] Wherein, the high-pressure side pressure is acquired and recorded every preset time interval to obtain a first high-pressure side pressure corresponding to the acquisition and recording process, i.e. the first high-pressure side pressure at the current time; for example, the preset time interval is 1 min, i.e. the interval between the current time and the previous time is 1 min.

[0116] Step S413, acquiring the running time of the compressor.

[0117] Step S414, judging whether the outer ring temperature is greater than or equal to a preset outer ring temperature threshold value and whether the running time is greater than or equal to a preset running time threshold value.

[0118] For example, the outer ring temperature threshold value is 53℃, and the running time threshold value is 12 min.

[0119] In step S414, if the outer ring temperature is greater than or equal to the outer ring temperature threshold value and the running time is greater than or equal to the running time threshold value, step S421 is executed; if the outer ring temperature is less than the outer ring temperature threshold value or the running time is less than the running time threshold value, the current current loop bandwidth is maintained unchanged, step S412 is continuously executed, and the first high-pressure side pressure of the refrigerant system, the outer ring temperature of the compressor and the running time of the compressor are acquired and recorded.

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

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

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

[0123] For example, 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 value, step S4311a is executed; if the pressure change rate is less than the first rate threshold value, step S423 is executed.

[0125] Step S4311a, determining the correction value as a preset first bandwidth correction value.

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

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

[0128] Step S423, judging 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, step S4311b is executed; if the pressure change rate is less than the second rate threshold, the current current loop bandwidth is maintained unchanged, step S412 is continuously executed, the first high-pressure side pressure of the refrigerant system at the next time is acquired and recorded, the outer ring temperature of the compressor is acquired, and the running time of the compressor acquired previously is updated.

[0130] Step S4311b, determining the correction value as a preset second bandwidth correction value.

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

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

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

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

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

[0136] The correction module 73 is configured to correct the current loop bandwidth of the compressor at the current time 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 time 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, in response to the load change state being a first preset state, determine the correction value as a preset first bandwidth correction value; and in response to the load change state being a second preset state, determine the correction value as a preset second bandwidth correction value; wherein the second bandwidth correction value is less than the first bandwidth correction value.

[0139] ​In some embodiments, the determining module 72 is configured to determine the load change state as 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 determining module 72 is configured to determine the load change state as a second preset state in response to the pressure change rate being less than the 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 obtaining module 71 is configured to obtain a high-pressure side pressure signal of the refrigerant system and obtain an outer ring temperature signal of the compressor; and perform filtering processing and analog-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.

[0142] In some embodiments, the current loop bandwidth correction device 70 further comprises a second obtaining module.

[0143] The second obtaining module is configured to obtain a running time of the compressor.

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

[0145] As to the device in the above-mentioned embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments of the method, and will not be described in detail here.

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

[0147] Figure 9 is a structural schematic diagram of an electronic device according to an exemplary embodiment. As shown in Figure 9 The electronic device can be an air conditioner, and the electronic device comprises:

[0148] one or more processors 801;

[0149] a memory 802 having stored thereon one or more programs, which, when executed by the one or more processors, cause the one or more processors to implement the current loop bandwidth correction method of any of the above-mentioned embodiments;

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

[0151] The processor 801 is a device with data processing capability, including but not limited to a central processing unit (CPU) and the like; the memory 802 is a device with data storage capability, including but not limited to a random access memory (RAM, more specifically SDRAM, DDR, etc.), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory (FLASH), and the like; 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) and the like.

[0152] In some embodiments, the processor 801, the memory 802 and the I / O interface 803 are connected to each other through the 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 contains a computer program capable of being executed by a programmable device, and the computer program has code portions for executing the current loop bandwidth correction method described above when executed by the programmable device. Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the description and practicing the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including other known or customary practices in the art in addition to those disclosed herein. The description and embodiments are to be regarded as illustrative 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 precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method of modifying the bandwidth of a current loop, characterized by, The method comprises: acquiring a first high-pressure side pressure of a refrigerant system at a current time, and acquiring an outer ring temperature of a compressor at the current time; 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 time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a previous time of the current time; correcting a current loop bandwidth of the compressor at the current time according to the load change state.

2. The correction method of claim 1, wherein The correcting of the current loop bandwidth of the compressor at the current time according to the load change state comprises: determining a correction value corresponding to the current loop bandwidth at the current time according to the load change state; correcting the current loop bandwidth according to the correction value.

3. The correction method of claim 2, wherein The determining of the correction value corresponding to the current loop bandwidth at the current time according to the load change state comprises: in response to the load change state being a first preset state, determining that the correction value is a preset first bandwidth correction value; in response to the load change state being a second preset state, determining that the correction value is a preset second bandwidth correction value; wherein the second bandwidth correction value is less than the first bandwidth correction value.

4. The correction method of claim 1, wherein The determining of the load change state of the compressor at the current time according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous time of the current time comprises: determining a pressure change rate at the current time 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, determining that the load change state is a first preset state.

5. The correction method of claim 1, wherein The determining of the load change state of the compressor at the current time according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous time of the current time comprises: determining a pressure change rate at the current time 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, determining that the load change state is a second preset state, wherein the second rate threshold is less than the first rate threshold.

6. The correction method of claim 1, wherein The acquiring of the first high-pressure side pressure of the refrigerant system at the current time and the acquiring of the outer ring temperature of the compressor at the current time comprise: acquiring a high-pressure side pressure signal of the refrigerant system and an outer ring temperature signal of the compressor; performing filtering processing and 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.

7. The correction method according to any one of claims 1 to 6, characterized in that, Before the determining of the load change state of the compressor at the current time according to the first high-pressure side pressure and the second high-pressure side pressure of the refrigerant system at the previous time of the current time, the method further comprises: acquiring a running time of the compressor; The determination of the load change state of the compressor at the current time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a previous time of the current time comprises: In response to the running time being greater than or equal to a preset running 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 current loop bandwidth modification device, characterized by, Comprise: A first acquisition module configured to acquire a first high-pressure side pressure of a refrigerant system at a current time, and acquire an outer ring temperature of a compressor at the current time; A determination module configured to, in response to the outer ring temperature being greater than or equal to a preset outer ring temperature threshold, determine a load change state of the compressor at the current time according to the first high-pressure side pressure and a second high-pressure side pressure of the refrigerant system at a previous time of the current time; A correction module configured to correct a current loop bandwidth of the compressor at the current time according to the load change state.

9. An electronic device, comprising: Comprise: A 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 of any one of claims 1-7.

10. A computer-readable storage medium having stored thereon computer program instructions, wherein, The program instructions are executed by the processor to implement the steps of the current loop bandwidth correction method of any one of claims 1-7.

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