Vehicle air conditioner compressor control method, device and equipment and readable storage medium

Abstract

According to the vehicle air conditioner compressor control method, device and equipment and the readable storage medium, three-dimensional linear interpolation calculation is conducted on the basis of three key parameters including the target evaporator temperature, the air conditioner air volume and the vehicle exterior environment temperature through a pre-established compressor rotating speed feed-forward parameter mapping table, and a compressor rotating speed feed-forward value matched with the current working condition is directly output; in the step, a reference rotating speed instruction is quickly generated through multi-dimensional parameter collaborative prediction; a proportion integration differentiation (PID) control algorithm is introduced, and a rotating speed compensation value is dynamically calculated according to the real-time evaporator temperature deviation value; and the feed-forward value serves as the reference rotating speed, the compressor rotating speed compensation value is superposed to generate the final compressor target rotating speed, and the two synergistically improve the dynamic response performance of the compressor. The delay of the initial cold air insufficiency stage is remarkably reduced, the supercooling jitter phenomenon is avoided, the temperature fluctuation amplitude is reduced, the energy consumption loss caused by frequent starting and stopping or overshoot of the compressor is reduced while quick response is achieved, and the dynamic balance between the refrigeration requirement and the output of the compressor is achieved.

Description

Technical Field

[0001] The present application relates to the field of vehicle air conditioners, and particularly relates to a control method, device, equipment and readable storage medium for a vehicle air conditioner compressor. Background Art

[0002] The vehicle air conditioning system adjusts the vehicle interior environment through functions such as refrigeration, heating, ventilation, and air purification, and is divided into two categories: independent type (equipped with a dedicated engine to drive the compressor, mostly used in medium and large buses) and non-independent type (relying on the vehicle engine to drive, commonly found in cars). The core components include a compressor, a condenser, an expansion valve, and an evaporator, and the temperature control is achieved through the refrigerant cycle.

[0003] In the related art, the vehicle air conditioner compressor is the core of the air conditioning refrigeration system of new energy vehicles, and its speed control affects the refrigeration of the entire air conditioning system. In the initial stage of the vehicle air conditioner compressor, the cold air blowing is insufficient, and there is subsequent overcooling jitter, resulting in the problem of lag in control dynamic response. Summary of the Invention

[0004] The present application provides a control method, device, equipment and readable storage medium for a vehicle air conditioner compressor, which can solve the technical problems of insufficient cold air blowing in the initial stage of the compressor of the vehicle air conditioner, subsequent overcooling jitter, and lag in control dynamic response existing in the related art.

[0005] In a first aspect, an embodiment of the present application provides a control method for a vehicle air conditioner compressor, and the control method for the vehicle air conditioner compressor includes:

[0006] Based on a preset compressor speed feedforward parameter mapping table, perform three-dimensional linear interpolation calculation on the currently input target evaporator temperature, air volume of the air conditioner, and outdoor ambient temperature, and output a compressor speed feedforward value;

[0007] Based on the currently input evaporator temperature deviation value, use proportional integral differential control algorithm one to output a compressor speed compensation value;

[0008] Based on the compressor speed feedforward value and the compressor speed compensation value, output a compressor target speed.

[0009] In combination with the first aspect, in an implementation manner, the target evaporator temperature includes:

[0010] Based on a preset evaporator temperature feedforward parameter mapping table, perform three-dimensional linear interpolation calculation on the currently input target air outlet temperature, air volume of the air conditioner, and outdoor ambient temperature, and output a target evaporator temperature feedforward value;

[0011] Based on the target evaporator temperature feedforward value and the target evaporator temperature compensation value, calculate the target evaporator temperature.

[0012] In combination with the first aspect, in one implementation, the target evaporator temperature compensation value includes:

[0013] Based on the actual air outlet temperature and the target air outlet temperature, calculate the air outlet temperature deviation value;

[0014] Based on the air outlet temperature deviation value, use the proportional-integral-derivative control algorithm two to output the target evaporator temperature compensation value.

[0015] In combination with the first aspect, in one implementation, the target air outlet temperature includes:

[0016] Based on the preset thermal comfort regulation parameter mapping table, perform three-dimensional linear interpolation calculation on the currently input user-set temperature, vehicle interior temperature, and vehicle exterior environment temperature, and output the target air outlet temperature.

[0017] In combination with the first aspect, in one implementation, the evaporator temperature deviation value includes:

[0018] Based on the actual evaporator temperature value and the target evaporator temperature value, calculate the evaporator temperature deviation value.

[0019] In combination with the first aspect, in one implementation, before performing three-dimensional linear interpolation calculation on the currently input target evaporator temperature, air conditioner air volume, and vehicle exterior environment temperature based on the preset compressor speed feedforward parameter mapping table and outputting the compressor speed feedforward value, it includes:

[0020] Use the vehicle-mounted system to obtain the air conditioner air volume, and use the temperature sensor to obtain the vehicle exterior environment temperature.

[0021] In the second aspect, an embodiment of the present application provides a vehicle air conditioner compressor control device, and the vehicle air conditioner compressor control device includes:

[0022] A feedforward speed calculation module, which is used to perform three-dimensional linear interpolation calculation on the currently input target evaporator temperature, air conditioner air volume, and vehicle exterior environment temperature based on the preset compressor speed feedforward parameter mapping table, and output the compressor speed feedforward value;

[0023] A compensation adjustment module, which is used to output the compressor speed compensation value by using the proportional-integral-derivative control algorithm one based on the currently input evaporator temperature deviation value;

[0024] A speed synthesis output module, which is used to output the compressor target speed based on the compressor speed feedforward value and the compressor speed compensation value.

[0025] In combination with the second aspect, in one implementation, the vehicle air conditioner compressor control device further includes:

[0026] An evaporator feedforward prediction module, which is used to perform three-dimensional linear interpolation calculations on the currently input target air outlet temperature, air volume of the air conditioner, and outdoor ambient temperature based on a preset evaporator temperature feedforward parameter mapping table, and output a target evaporator temperature feedforward value;

[0027] A temperature setting synthesis module, which is used to calculate a target evaporator temperature based on the target evaporator temperature feedforward value and the target evaporator temperature compensation value.

[0028] In a third aspect, an embodiment of the present application provides a vehicle air conditioner compressor control device, which includes a processor, a memory, and a vehicle air conditioner compressor control program stored on the memory and executable by the processor. When the vehicle air conditioner compressor control program is executed by the processor, the steps of the vehicle air conditioner compressor control method described in some of the above embodiments are implemented.

[0029] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a vehicle air conditioner compressor control program is stored. When the vehicle air conditioner compressor control program is executed by a processor, the steps of the vehicle air conditioner compressor control method described in some of the above embodiments are implemented.

[0030] The beneficial effects brought by the technical solution provided by the embodiment of the present application include:

[0031] Through a pre-established compressor speed feedforward parameter mapping table, three-dimensional linear interpolation calculations are performed based on three key parameters: the target evaporator temperature, the air volume of the air conditioner, and the outdoor ambient temperature, and the compressor speed feedforward value matching the current working condition is directly output. This step quickly generates a reference speed command through multi-dimensional parameter collaborative prediction; the proportional integral derivative control algorithm 1 (PID algorithm) is introduced to dynamically calculate the speed compensation value according to the real-time evaporator temperature deviation value; the feedforward value is used as the reference speed, and the compressor speed compensation value is superimposed to generate the final compressor target speed. The two cooperate to improve the dynamic response performance of the compressor. Among them, the compressor speed feedforward parameter mapping table pre-judges the target speed based on multi-dimensional parameter interpolation, significantly reducing the delay in the initial cold air shortage stage. The PID algorithm compensates and corrects the evaporator temperature deviation in real time, avoiding the phenomenon of overcooling jitter, reducing the temperature fluctuation amplitude, reducing the energy consumption loss caused by frequent start-stop or overshoot of the compressor while quickly responding, taking into account both comfort and system efficiency, and realizing the dynamic balance between the refrigeration demand and the compressor output. Description of the Drawings

[0032] Figure 1 It is a schematic flowchart of an embodiment of the vehicle air conditioner compressor control method of the present application;

[0033] Figure 2Schematic diagram of the functional modules of an embodiment of the vehicle air-conditioning compressor control device of the present application;

[0034] Figure 3 Schematic diagram of the hardware structure of the vehicle air-conditioning compressor control equipment involved in the solution of the embodiment of the present application. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0036] It should be understood that the vehicle air-conditioning system adjusts the vehicle interior environment through functions such as refrigeration, heating, ventilation, and air purification, and is divided into two categories: independent type (equipped with a dedicated engine to drive the compressor, mostly used in medium and large buses) and non-independent type (relying on the vehicle engine to drive, commonly found in cars). The core components include a compressor, a condenser, an expansion valve, and an evaporator, and the temperature control is achieved through the refrigerant cycle.

[0037] Among them, the vehicle air-conditioning compressor is the core of the air-conditioning refrigeration system of new energy vehicles, and its speed control affects the refrigeration of the entire air-conditioning system. In the initial stage of the vehicle air-conditioning compressor, the cold air blowing is insufficient, and there is subsequent overcooling jitter, resulting in the problem of lag in control dynamic response.

[0038] To make the purpose, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0039] In a first aspect, an embodiment of the present application provides a vehicle air-conditioning compressor control method.

[0040] In one embodiment, referring to Figure 1 , Figure 1 is a schematic flowchart of the first embodiment of the vehicle air-conditioning compressor control method of the present application. As Figure 1 shown, the vehicle air-conditioning compressor control method includes:

[0041] S100: Based on a preset compressor speed feedforward parameter mapping table, perform three-dimensional linear interpolation calculation on the currently input target evaporator temperature, air-conditioning air volume, and outdoor ambient temperature, and output a compressor speed feedforward value;

[0042] S200: Based on the currently input evaporator temperature deviation value, use proportional-integral-derivative control algorithm 1 to output a compressor speed compensation value;

[0043] S300: Based on the compressor speed feedforward value and the compressor speed compensation value, output the target compressor speed.

[0044] In this embodiment, through a pre-established compressor speed feedforward parameter mapping table, three-dimensional linear interpolation calculation is performed based on three key parameters: the target evaporator temperature, the air volume of the air conditioner, and the ambient temperature outside the vehicle, and directly output the compressor speed feedforward value matching the current working condition. This step quickly generates a reference speed command through multi-dimensional parameter collaborative prediction; introduce the proportional-integral-derivative control algorithm 1 (PID algorithm), and dynamically calculate the speed compensation value according to the real-time evaporator temperature deviation value; use the feedforward value as the reference speed, and superimpose the compressor speed compensation value to generate the final target compressor speed. The two cooperate to improve the dynamic response performance of the compressor. The compressor speed feedforward parameter mapping table predicts the target speed based on multi-dimensional parameter interpolation, significantly reducing the delay in the initial cold air shortage stage. The PID algorithm compensates and corrects the evaporator temperature deviation in real time, avoiding the phenomenon of overcooling jitter, reducing the temperature fluctuation amplitude, while quickly responding, reducing the energy consumption loss caused by frequent start-stop or overshoot of the compressor, taking into account comfort and system efficiency, and achieving the dynamic balance between the refrigeration demand and the compressor output.

[0045] Further, in one embodiment, in S100, it includes the following steps:

[0046] S101: Based on a preset evaporator temperature feedforward parameter mapping table, perform three-dimensional linear interpolation calculation on the currently input target air outlet temperature, air volume of the air conditioner, and ambient temperature outside the vehicle, and output the target evaporator temperature feedforward value;

[0047] S102: Calculate the target evaporator temperature based on the target evaporator temperature feedforward value and the target evaporator temperature compensation value.

[0048] In this embodiment, before the compressor speed control, based on the three parameters of the target air outlet temperature, the air volume of the air conditioner, and the ambient temperature outside the vehicle, linear interpolation is performed through a preset three-dimensional mapping table, and the evaporator temperature feedforward value is directly output, dynamically associating the evaporator temperature setting with the user demand (target air outlet temperature) and the environmental working condition, and realizing the pre-generation of the target value; superimpose the target evaporator temperature output by the feedforward and the compensation value to form the final target evaporator temperature. This step calibrates the feedforward prediction result through a feedback mechanism to ensure the accuracy of the target value and the adaptability to the working condition, and further alleviates the problem of initial cold air shortage.

[0049] Further, in one embodiment, in S102, it includes the following steps:

[0050] S102-1: Calculate the air outlet temperature deviation value based on the actual air outlet temperature and the target air outlet temperature;

[0051] S102-2: Based on the air outlet temperature deviation value, use the proportional-integral-derivative control algorithm II to output the target evaporator temperature compensation value.

[0052] In this embodiment, by collecting the actual air outlet temperature in real time and comparing it with the target air outlet temperature set by the user, the air outlet temperature deviation value is dynamically calculated. This step converts the subjective comfort requirement of the user (the target air outlet temperature) into a quantifiable control deviation signal. For the air outlet temperature deviation, an independent proportional-integral-derivative control algorithm II (PID algorithm) is used to output the target evaporator temperature compensation value, and this compensation value is used to correct the target evaporator temperature generated by the feedforward to form the final set value.

[0053] Further, in one embodiment, in S102-1, the following steps are included:

[0054] S102-1-1: Based on the preset thermal comfort regulation parameter mapping table, perform three-dimensional linear interpolation calculation on the currently input user-set temperature, vehicle interior temperature, and vehicle exterior ambient temperature, and output the target air outlet temperature.

[0055] In this embodiment, based on the preset thermal comfort regulation parameter mapping table, three-dimensional linear interpolation is performed on the three parameters of the user-set temperature, real-time vehicle interior temperature, and vehicle exterior ambient temperature to dynamically calculate the target air outlet temperature. This mapping table converts the user setting value into an actual control target that meets the human comfort requirement; converts the temperature preference set by the user into a scientific thermal comfort target air outlet temperature, eliminating the body sensation deviation caused by blindly relying on fixed temperature settings; comprehensively considering the temperature difference between the vehicle interior and exterior, dynamically corrects the air outlet temperature target value. For example, when the vehicle exterior is at a high temperature, the target air outlet temperature is appropriately reduced to offset the influence of heat radiation, avoiding frequent manual adjustment by the user; anticipates the change trend of the cabin heat load through the temperature parameters inside and outside the vehicle, and sets a reasonable air outlet temperature target in advance to suppress temperature fluctuations.

[0056] Further, in one embodiment, in S200, the following steps are included:

[0057] S201: Calculate the evaporator temperature deviation value based on the actual evaporator temperature value and the target evaporator temperature value.

[0058] In this embodiment, the actual evaporator temperature value is obtained by collecting the evaporator temperature sensor signal in real time, and a subtraction operation is performed with the target evaporator temperature value after feedforward-compensation correction to generate the evaporator temperature deviation value. This deviation value directly reflects the gap between the current refrigeration state and the desired state, providing the core input signal for the subsequent proportional-integral-derivative control algorithm I.

[0059] Further, in one embodiment, before S100, the following steps are included:

[0060] S000: Obtain the air volume of the air conditioner using the in-vehicle system, and obtain the external ambient temperature using the temperature sensor.

[0061] In this embodiment, directly read the air volume value of the air conditioner set by the user or automatically adjusted through the in-vehicle system to ensure that the air volume parameter is synchronized with the user's operation intention or intelligent strategy in real time; use the temperature sensor deployed outside the vehicle body (such as at the intake grille) to monitor the external ambient temperature in real time and provide dynamic environmental working conditions input for feedforward control.

[0062] In summary, the following is a complete description of the vehicle air conditioner compressor control method provided by the embodiments of this application:

[0063] Step 1: Obtain the user-set temperature and the air volume of the air conditioner through the in-vehicle system, and obtain the in-vehicle temperature, the external ambient temperature, the actual air outlet temperature, and the actual evaporator temperature in real time through the temperature sensor;

[0064] Step 2: Based on the preset thermal comfort regulation parameter mapping table, perform three-dimensional linear interpolation and look-up based on the user-set temperature, the in-vehicle temperature, and the ambient temperature to obtain the target air outlet temperature;

[0065] Step 3: Based on the preset evaporator temperature feedforward parameter mapping table, perform three-dimensional linear interpolation and look-up based on the target air outlet temperature, the air volume of the air conditioner, and the external ambient temperature to obtain the target evaporator temperature feedforward value;

[0066] Step 4: The air outlet temperature deviation value = the actual air outlet temperature - the target air outlet temperature, and then perform proportional-integral-derivative control algorithm 1 control according to the air outlet temperature deviation value to obtain the compensation value of the target evaporator temperature;

[0067] Step 5: The target evaporator temperature = the target evaporator temperature feedforward value + the target evaporator temperature compensation value;

[0068] Step 6: Based on the preset compressor speed feedforward parameter mapping table, perform three-dimensional linear interpolation and look-up through the target evaporator temperature, the air volume of the air conditioner, and the external ambient temperature to obtain the compressor speed feedforward value;

[0069] Step 7: Subtract the target evaporator temperature from the actual evaporator temperature to obtain the evaporator temperature deviation value, and then perform proportional-integral-derivative control algorithm 2 control according to the evaporator temperature deviation value to obtain the compressor speed compensation value;

[0070] Step 8: The target compressor speed = the compressor speed feedforward value + the compressor speed compensation value.

[0071] That is, in the embodiment of the present application, through the pre-established compressor speed feedforward parameter mapping table, three-dimensional linear interpolation calculation is performed based on three key parameters: the target evaporator temperature, the air volume of the air conditioner, and the outside ambient temperature, and the compressor speed feedforward value matching the current working condition is directly output. In this step, through multi-dimensional parameter collaborative prediction, a reference speed command is quickly generated; the proportional integral differential control algorithm (PID algorithm) is introduced, and the speed compensation value is dynamically calculated according to the real-time evaporator temperature deviation value; the feedforward value is used as the reference speed, and the compressor speed compensation value is superimposed to generate the final compressor target speed, and the two cooperate to improve the dynamic response performance of the compressor. Among them, the compressor speed feedforward parameter mapping table predicts the target speed based on multi-dimensional parameter interpolation, significantly reducing the delay in the initial cold air shortage stage. The PID algorithm compensates and corrects the evaporator temperature deviation in real time, avoiding the phenomenon of overcooling jitter, reducing the temperature fluctuation amplitude, reducing the energy consumption loss caused by frequent start-stop or overshoot of the compressor while quickly responding, taking into account both comfort and system efficiency, and realizing the dynamic balance between the refrigeration demand and the compressor output.

[0072] Among them, the calculation principles of the thermal comfort regulation parameter mapping table, the evaporator temperature feedforward parameter mapping table, or the compressor speed feedforward parameter mapping table described in this solution are as follows:

[0073] Suppose there are 8 known points in three-dimensional space, forming a cubic grid with coordinates (x i , y j , z k ), and the corresponding function value is f(x i , y j , z k ), where i, j, k ∈ {0, 1}, and the interpolation point is (x, y, z). It is necessary to estimate f(x, y, z) through the values of these 8 points.

[0074] Derivation of the calculation formula:

[0075] 1. Interpolation along the x-axis (fixing y, z)

[0076] For each layer z k and each row y j , first perform one-dimensional linear interpolation in the x direction to obtain the intermediate value f(x, y j , z k ):

[0077] f(x, y j , z k ) = f(x0, y j , z k ) · (1 - α) + f(x1, y j , z k ) · α

[0078] Among them, is the normalized coordinate in the x direction (assuming x1 > x0).

[0079] 2. Interpolate along the y-axis (fix x, z)

[0080] Using the intermediate values obtained in the first step, perform a second one-dimensional linear interpolation in the y direction to obtain f(x, y, z k )

[0081] f(x, y, z k ) = f(x, y0, z k )·(1 - β) + f(x, y1, z k )·β

[0082] where is the normalized coordinate in the y direction.

[0083] 3. Interpolate along the z-axis (fix x, y)

[0084] Finally, perform a third one-dimensional linear interpolation in the z direction to obtain the final result f(x, y, z):

[0085] f(x, y, z) = f(x, y, z0)·(1 - γ) + f(x, y, z1)·γ

[0086] where is the normalized coordinate in the z direction.

[0087] 4. Combine the formulas

[0088] Combining the above three steps, the final expression for three-dimensional linear interpolation can be obtained:[[]]

[0089] f(x, y, z) = f(x0, y0, z0)·(1 - α)(1 - β)(1 - γ)

[0090] + f(x1, y0, z0)·α(1 - β)(1 - γ)

[0091] + f(x0, y1, z0)·(1 - α)β(1 - γ)

[0092] + f(x1, y1, z0)·αβ(1 - γ)

[0093] + f(x0, y0, z1)·(1 - α)(1 - β)γ

[0094] + f(x1, y0, z1)·α(1 - β)γ

[0095] + f(x0, y1, z1)·(1 - α)βγ

[0096] + f(x1, y1, z1)·αβγ

[0097] In practical applications, first store the grid data in a table. When interpolation is required, according to the given (x, y, z) coordinates, first determine the three-dimensional cell where it is located, then extract the function values of the corresponding eight grid points from the table, and substitute them into the above formula for calculation, so as to obtain the function value at the interpolation point (x, y, z).

[0098] For example, in step two, calculate the target air outlet temperature according to the three-dimensional linear interpolation look-up table of the set temperature, the in-vehicle temperature, and the out-of-vehicle ambient temperature set by the user;

[0099] First, obtain multiple groups of calibration tables of (set temperature, in-vehicle temperature, out-of-vehicle ambient temperature) corresponding to the target air outlet temperature through experimental calibration. As shown in Table 1 below:

[0100] Set Temperature Vehicle Interior Temperature Ambient Temperature Target Air Outlet Temperature x1 y1 z1 T1 x2 y2 z2 T2 x3 y3 z3 T3 x4 y4 z4 T4 x5 y5 z5 T5 x6 y6 z6 T6 x7 y7 z7 T7 x8 y8 z8 T8 x9 y9 z9 T9 x10 y10 z10 T10

[0101] Table 1: Calibration Table of Air Outlet Temperature

[0102] Secondly, assume that x is the set temperature, and find two set temperatures adjacent to x in the air outlet temperature calibration table as x0 and x1; y is the in-vehicle temperature, and find two in-vehicle temperatures adjacent to y in the calibration table as y0 and y1; z is the ambient temperature, and find two ambient temperatures adjacent to z in the calibration table as z0 and z1; then, substitute (x, y, z) into the above final expression to obtain the target air outlet temperature f(x, y, z) corresponding to (x, y, z).

[0103] In a second aspect, the embodiment of the present application also provides a vehicle air conditioner compressor control device.

[0104] In one embodiment, refer to Figure 2 , Figure 2 which is a schematic diagram of the functional modules of an embodiment of the vehicle air conditioner compressor control device of the present application. As Figure 2 shown, the vehicle air conditioner compressor control device includes: a feedforward speed calculation module, which is used to perform three-dimensional linear interpolation calculation on the currently input target evaporator temperature, air conditioner air volume, and out-of-vehicle ambient temperature based on a preset compressor speed feedforward parameter mapping table, and output a compressor speed feedforward value; a compensation adjustment module, which is used to output a compressor speed compensation value by using a proportional integral derivative control algorithm I based on the currently input evaporator temperature deviation value; a speed synthesis output module, which is used to output a compressor target speed based on the compressor speed feedforward value and the compressor speed compensation value.

[0105] In this embodiment, through a pre-established compressor speed feedforward parameter mapping table, three-dimensional linear interpolation calculation is performed based on three key parameters: the target evaporator temperature, the air volume of the air conditioner, and the ambient temperature outside the vehicle, and the compressor speed feedforward value matching the current working condition is directly output. This step generates a reference speed command quickly through multi-dimensional parameter collaborative prediction; the proportional integral derivative control algorithm (PID algorithm) is introduced to dynamically calculate the speed compensation value according to the real-time evaporator temperature deviation value; the feedforward value is used as the reference speed, and the compressor speed compensation value is superimposed to generate the final compressor target speed, and the two cooperate to improve the dynamic response performance of the compressor. Among them, the compressor speed feedforward parameter mapping table predicts the target speed based on multi-dimensional parameter interpolation, significantly reducing the delay in the initial cold air shortage stage. The PID algorithm compensates and corrects the evaporator temperature deviation in real time, avoiding the phenomenon of overcooling jitter, reducing the temperature fluctuation amplitude, reducing the energy consumption loss caused by frequent start-stop or overshoot of the compressor while quickly responding, taking into account both comfort and system efficiency, and achieving the dynamic balance between the refrigeration demand and the compressor output.

[0106] Further, in one embodiment, the vehicle air-conditioning compressor control device further includes: an evaporator feedforward prediction module, which is used to perform three-dimensional linear interpolation calculation on the currently input target air outlet temperature, air volume of the air conditioner, and ambient temperature outside the vehicle based on a preset evaporator temperature feedforward parameter mapping table, and output a target evaporator temperature feedforward value; a temperature setting synthesis module, which is used to calculate the target evaporator temperature based on the target evaporator temperature feedforward value and the target evaporator temperature compensation value.

[0107] Among them, the function implementation of each module in the above vehicle air-conditioning compressor control device corresponds to each step in the above vehicle air-conditioning compressor control method embodiment, and its function and implementation process will not be elaborated here one by one.

[0108] In a third aspect, an embodiment of the present application provides a vehicle air-conditioning compressor control device. The vehicle air-conditioning compressor control device can be a device with data processing functions such as a personal computer (PC), a notebook computer, a server, etc.

[0109] Refer to Figure 3 , Figure 3 which is a schematic hardware structure diagram of the vehicle air-conditioning compressor control device involved in the solution of the embodiment of the present application. In the embodiment of the present application, the vehicle air-conditioning compressor control device may include a processor, a memory, a communication interface, and a communication bus.

[0110] Among them, the communication bus can be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0111] The communication interface includes interfaces such as input / output (I / O) interfaces, physical interfaces, and logical interfaces for implementing the interconnection of components inside the vehicle air-conditioning compressor control device, as well as interfaces for implementing the interconnection between the vehicle air-conditioning compressor control device and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, an optical fiber interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[0112] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical memory, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0113] The processor can be a general-purpose processor, which can call the vehicle air-conditioning compressor control program stored in the memory and execute the vehicle air-conditioning compressor control method provided in the embodiments of the present application. For example, the general-purpose processor can be a central processing unit (CPU). Among them, the method executed when the vehicle air-conditioning compressor control program is called can refer to the various embodiments of the vehicle air-conditioning compressor control method of the present application, which will not be elaborated here.

[0114] Those skilled in the art can understand that Figure 3 the hardware structure shown in

[0115] does not constitute a limitation to the present application, and may include more or fewer components than shown in the figure, or combine some components, or arrange different components.

[0116] The readable storage medium of the present application stores a vehicle air-conditioning compressor control program, where when the vehicle air-conditioning compressor control program is executed by a processor, the steps of the vehicle air-conditioning compressor control method as described above are implemented.

[0117] Among them, the method implemented when the vehicle air-conditioning compressor control program is executed can refer to the various embodiments of the vehicle air-conditioning compressor control method of the present application, which will not be elaborated here.

[0118] It should be noted that the serial numbers of the above embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0119] The terms "comprising", "having" and any variations thereof in the description of the specification and claims of this application, as well as in the above-mentioned drawings, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices. Descriptions such as "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit that "first", "second" and "third" are different types.

[0120] In the description of the embodiments of this application, words such as "exemplary", "for example" or "for instance" are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary", "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary", "for example" or "for instance" is intended to present relevant concepts in a specific manner.

[0121] In the description of the embodiments of this application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B; "and / or" in the text is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "a plurality of" means two or more than two.

[0122] In some processes described in the embodiments of this application, a plurality of operations or steps appear in a specific order. However, it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of this application or may be executed in parallel. The serial numbers of the operations are only used to distinguish different operations, and the serial numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0123] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation manner. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above and includes several instructions for causing a terminal device to execute the methods described in various embodiments of the present application.

[0124] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A control method for a vehicle air-conditioning compressor, characterized in that, The vehicle air-conditioning compressor control method includes: Based on a preset compressor speed feedforward parameter mapping table, perform three-dimensional linear interpolation calculations on the currently input target evaporator temperature, air-conditioning air volume, and outdoor ambient temperature, and output a compressor speed feedforward value; Based on the currently input evaporator temperature deviation value, use a proportional-integral-derivative control algorithm 1 to output a compressor speed compensation value; Based on the compressor speed feedforward value and the compressor speed compensation value, output a compressor target speed.

2. The vehicle air-conditioning compressor control method according to claim 1, wherein: The target evaporator temperature includes: Based on a preset evaporator temperature feedforward parameter mapping table, perform three-dimensional linear interpolation calculations on the currently input target air outlet temperature, air-conditioning air volume, and outdoor ambient temperature, and output a target evaporator temperature feedforward value; Based on the target evaporator temperature feedforward value and the target evaporator temperature compensation value, calculate the target evaporator temperature.

3. The vehicle air-conditioning compressor control method according to claim 2, wherein: The target evaporator temperature compensation value includes: Based on the actual air outlet temperature and the target air outlet temperature, calculate the air outlet temperature deviation value; Based on the air outlet temperature deviation value, use a proportional-integral-derivative control algorithm 2 to output a target evaporator temperature compensation value.

4. The vehicle air-conditioning compressor control method according to claim 3, wherein: The target air outlet temperature includes: Based on a preset thermal comfort regulation parameter mapping table, perform three-dimensional linear interpolation calculations on the currently input user-set temperature, vehicle interior temperature, and outdoor ambient temperature, and output the target air outlet temperature.

5. The vehicle air-conditioning compressor control method according to claim 1, wherein: The evaporator temperature deviation value includes: Based on the actual evaporator temperature value and the target evaporator temperature value, calculate the evaporator temperature deviation value.

6. The vehicle air-conditioning compressor control method according to claim 1, wherein: Before performing three-dimensional linear interpolation calculations on the currently input target evaporator temperature, air-conditioning air volume, and outdoor ambient temperature based on a preset compressor speed feedforward parameter mapping table and outputting a compressor speed feedforward value, it includes: Use the vehicle-mounted system to obtain the air-conditioning air volume, and use a temperature sensor to obtain the outdoor ambient temperature.

7. A vehicle air conditioner compressor control device, characterized in that, The vehicle air-conditioning compressor control device includes: A feedforward speed calculation module, which is used to perform three-dimensional linear interpolation calculations on the currently input target evaporator temperature, air-conditioning air volume, and outdoor ambient temperature based on a preset compressor speed feedforward parameter mapping table, and output a compressor speed feedforward value; A compensation adjustment module, which is used to output a compressor speed compensation value based on the currently input evaporator temperature deviation value by using a proportional-integral-derivative control algorithm 1; A speed synthesis output module, which is used to output a compressor target speed based on the compressor speed feedforward value and the compressor speed compensation value.

8. The vehicle air-conditioning compressor control device according to claim 7, wherein: The vehicle air-conditioning compressor control device further includes: An evaporator feedforward prediction module, which is used to perform three-dimensional linear interpolation calculation on the currently input target outlet air temperature, air volume of the air conditioner, and outdoor ambient temperature based on a preset evaporator temperature feedforward parameter mapping table, and output a target evaporator temperature feedforward value; A temperature setting synthesis module, which is used to calculate a target evaporator temperature based on the target evaporator temperature feedforward value and the target evaporator temperature compensation value.

9. A vehicle air conditioner compressor control device, characterized in that, The vehicle air-conditioning compressor control device includes a processor, a memory, and a vehicle air-conditioning compressor control program stored on the memory and executable by the processor. When the vehicle air-conditioning compressor control program is executed by the processor, the steps of the vehicle air-conditioning compressor control method according to any one of claims 1 to 6 are implemented.

10. A computer-readable storage medium, characterized in that A vehicle air-conditioning compressor control program is stored on the computer-readable storage medium. When the vehicle air-conditioning compressor control program is executed by a processor, the steps of the vehicle air-conditioning compressor control method according to any one of claims 1 to 6 are implemented.

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