Control method, control device, air supply device and storage medium

Abstract

The invention discloses a control method, a control device, an air supply device and a storage medium. The control method is used for the air supply device. The control method comprises the steps that historical calibration parameters and current calibration parameters of the air supply device are obtained, the historical calibration parameters comprise historical final-stage exhaust pressure, historical environment air pressure, historical environment temperature and historical inter-stage air inlet temperature, and the current calibration parameters comprise current environment air pressure, current environment temperature and current inter-stage air inlet temperature; the current surge rotating speed of the air supply device is calculated according to the historical calibration parameters and the current calibration parameters; and the current rotating speed of the air supply device is controlled to be larger than the current surge rotating speed. The current environment air pressure, the current environment temperature and the current inter-stage air inlet temperature are obtained and fused with the theoretical values to calculate the surge rotating speed, so that the calculated surge rotating speed can adapt to the current working environment of the air supply device, the precision of the surge rotating speed is high, and then the stability of the air supply device can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of household electrical appliances, and more specifically, to a control method, a control device, an air supply device and a non-volatile computer-readable storage medium. Background Art

[0002] Surge phenomenon is an unstable operating state of the air supply device under specific working conditions, which manifests itself as periodic fluctuations in pressure and flow, accompanied by strong vibration and noise, threatening the stability and safety of the air supply device.

[0003] In the related art, when the current speed of the air supply device is lower than the surge speed of the air supply device, surge phenomenon is likely to occur, and the surge speed of the air supply device is usually obtained through theoretical calculation. However, as the working environment of the air supply device changes, the surge speed obtained through theory has low accuracy, resulting in reduced stability of the air supply device. Summary of the invention

[0004] A control method, a control device, an air supply device and a non-volatile computer-readable storage medium provided in an embodiment of the present invention can solve the problem that the surge speed of the air supply device calculated theoretically cannot adapt to environmental changes, resulting in low accuracy of the surge speed of the air supply device and poor stability of the air supply device.

[0005] The control method of the embodiment of the present invention is used for an air supply device. The control method includes obtaining the historical calibration parameters and current calibration parameters of the air supply device, the historical calibration parameters include the historical final stage exhaust pressure, the historical ambient air pressure, the historical ambient temperature and the historical interstage intake temperature, and the current calibration parameters include the current ambient air pressure, the current ambient temperature and the current interstage intake temperature; calculating the current surge speed of the air supply device according to the historical calibration parameters and the current calibration parameters; and controlling the current speed of the air supply device to be greater than the current surge speed.

[0006] In this way, the surge speed is calculated by obtaining the current ambient air pressure, ambient temperature and inter-stage intake temperature, and fusing them with the theoretical values. The calculated surge speed can adapt to the current working environment of the air supply device, and the surge speed has a high accuracy, which can improve the stability of the air supply device.

[0007] In certain embodiments, the air supply device includes a plurality of compression stages and at least one interstage intercooler, each of the interstage intercoolers is disposed between two adjacent compression stages, and the historical interstage intake air temperature and the current interstage intake air temperature are temperatures after cooling through the interstage intercooler.

[0008] Thus, by arranging an interstage intercooler between the compression stages of the air supply device, the temperature of the high-temperature air after the air supply device is pressurized can be reduced, so as to reduce the heat load of the motor and increase the intake air volume. Since the intake air temperature of each stage is different, different intake air temperatures will affect the surge speed. Therefore, by obtaining the temperature after cooling through the interstage intercooler, the influence of different intake air temperatures on the surge speed calculation can be reduced, thereby improving the accuracy of the surge speed calculation.

[0009] In certain embodiments, the current surge speed of the air supply device is calculated based on the historical calibration parameters and the current calibration parameters, including determining a historical weighted intake temperature based on the historical ambient temperature and the historical inter-stage intake temperature, and determining a current weighted intake temperature based on the current ambient temperature and the current inter-stage intake temperature; and calculating the current surge speed of the air supply device based on the historical weighted intake temperature, the current weighted intake temperature, the historical final stage exhaust pressure, the historical ambient pressure, and the current ambient pressure.

[0010] In this way, by determining the historical weighted intake temperature and the current weighted intake temperature, the influence of the ambient temperature on the surge speed and the influence of the inter-stage intake temperature on the surge speed can be reduced, thereby improving the accuracy of the surge speed calculation.

[0011] In certain embodiments, determining the historical weighted intake temperature based on the historical ambient temperature and the historical inter-stage intake temperature includes performing a weighted calculation on the historical ambient temperature and the historical inter-stage intake temperature according to a first weight coefficient to obtain the historical weighted intake temperature, wherein the weight coefficient is obtained by fitting multiple test values.

[0012] In this way, by performing weighted calculation on the historical ambient temperature and the historical inter-stage intake air temperature, the historical weighted intake air temperature can be accurately obtained.

[0013] In certain embodiments, determining the current weighted intake temperature based on the current ambient temperature and the current inter-stage intake temperature includes performing a weighted calculation on the current ambient temperature and the current inter-stage intake temperature according to a second weight coefficient to obtain the current weighted intake temperature, and the second weight coefficient is the same as the first weight coefficient.

[0014] In this way, by performing weighted calculation on the current ambient temperature and the current inter-stage intake air temperature, the current weighted intake air temperature can be accurately obtained.

[0015] In certain embodiments, calculating the current surge speed of the air supply device based on the historical calibration parameters and the current calibration parameters includes determining the historical surge speed based on the ratio of the historical final stage exhaust pressure to the current ambient air pressure; and calculating the current surge speed of the air supply device based on the historical calibration parameters, the current calibration parameters and the historical surge speed.

[0016] In this way, by determining the historical surge speed according to the ratio of the historical final stage exhaust pressure to the current ambient pressure, and calculating the current surge speed according to the historical surge speed, the influence of the ambient pressure on the surge speed can be reduced, thereby improving the accuracy of the surge speed calculation.

[0017] In certain embodiments, the calculation of the current surge speed of the air supply device based on the historical calibration parameters, the current calibration parameters and the historical surge speed includes determining the current surge speed based on the historical surge speed, the current weighted intake temperature and the historical weighted intake temperature, the historical weighted intake temperature is determined based on the historical ambient temperature and the historical inter-stage intake temperature, and the current weighted intake temperature is determined based on the current ambient temperature and the current inter-stage intake temperature.

[0018] In this way, by determining the current surge speed according to the historical surge speed, the current weighted intake temperature and the historical weighted intake temperature, the accuracy of the surge speed calculation can be improved.

[0019] The first control device of the embodiment of the present invention is used for an air supply device. The first control device includes an acquisition module, a calculation module and a control module. Among them, the acquisition module is used to obtain the historical calibration parameters and current calibration parameters of the air supply device, the historical calibration parameters include the historical final stage exhaust pressure, the historical ambient air pressure, the historical ambient temperature and the historical inter-stage intake temperature, and the current calibration parameters include the current ambient air pressure, the current ambient temperature and the current inter-stage intake temperature; the calculation module is used to calculate the current surge speed of the air supply device according to the historical calibration parameters and the current calibration parameters; the control module is used to control the current speed of the air supply device according to the current surge speed.

[0020] The second control device of the embodiment of the present invention includes a processor and a memory; a computer program is stored in the memory, and the computer program is executed by the processor, and the computer program includes instructions for executing any one of the control methods described above.

[0021] The air supply device according to the embodiment of the present invention includes a control device and a motor. The control device is electrically connected to the motor. The control device is the first control device described above or the second control device described above.

[0022] A non-volatile computer-readable storage medium containing a computer program according to an embodiment of the present invention, when the computer program is executed by a processor, enables the processor to execute the control method described in any one of the above embodiments.

[0023] Additional aspects and advantages of embodiments of the present invention will be given in part in the following description and in part will be obvious from the following description or learned through practice of embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of the planar structure of an air supply device according to some embodiments of the present invention;

[0026] Figure 2 is a flow chart of a control method of certain embodiments of the present invention;

[0027] Figure 3 is a flow chart of a control method of certain embodiments of the present invention;

[0028] Figure 4 is a flow chart of a control method of certain embodiments of the present invention;

[0029] Figure 5 is a flow chart of a control method of certain embodiments of the present invention;

[0030] Figure 6 is a flow chart of a control method of certain embodiments of the present invention;

[0031] Figure 7 is a flow chart of a control method of certain embodiments of the present invention;

[0032] Figure 8 is a schematic diagram of a module of a first control device in certain embodiments of the present invention;

[0033] Fig. 9 The diagram is a schematic diagram of the connection state between a non-volatile computer-readable storage medium and a processor according to some embodiments of the present invention.

[0034] Description of Figure Numbers:

[0035] 100, air supply device; 10, first control device; 11, acquisition module; 12, calculation module; 13, control module; 20, compression stage; 30, interstage intercooler; 40, second control device; 41, processor; 42, memory. 300, non-volatile computer-readable storage medium; 310, computer program. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present invention, and cannot be understood as limiting the embodiments of the present invention.

[0037] See also Figure 1 and Figure 2 The control method provided in the embodiment of the present invention is used for the air supply device 100, and the control method includes:

[0038] Step 011: Obtain historical calibration parameters and current calibration parameters of the air supply device 100, the historical calibration parameters include historical final stage exhaust pressure, historical ambient pressure, historical ambient temperature and historical interstage inlet temperature, and the current calibration parameters include current ambient pressure, current ambient temperature and current interstage inlet temperature;

[0039] Step 012: Calculate the current surge speed of the air supply device 100 according to the historical calibration parameters and the current calibration parameters;

[0040] Step 013: Control the current rotation speed of the air supply device 100 to be greater than the current surge rotation speed.

[0041] In this way, by obtaining the current ambient air pressure, ambient temperature and inter-stage intake temperature, and integrating them with the theoretical value to calculate the surge speed, the calculated surge speed can adapt to the current working environment of the air supply device 100, and the surge speed has a high accuracy, which can improve the stability of the air supply device 100.

[0042] Among them, the air supply device 100 is a mechanical device that relies on input mechanical energy to increase gas pressure and deliver gas. For example, the air supply device 100 may include but is not limited to a variable speed centrifugal air compressor or a centrifugal blower. When the air supply device 100 encounters a specific working condition during operation and an unstable operating state occurs (that is, when the speed of the air supply device 100 is less than or equal to the surge speed, the surge speed refers to the speed of the air supply device 100 when surge occurs), the air supply device 100 is prone to surge phenomenon. The surge phenomenon is specifically manifested as periodic fluctuations in the pressure and flow of the air supply device 100, accompanied by strong vibration and noise, thereby posing a threat to the stability and safety of the air supply device 100. Therefore, it is necessary to judge whether the air supply device 100 will experience surge phenomenon based on the surge speed of the air supply device 100.

[0043] Specifically, during the operation of the air supply device 100, by obtaining the final exhaust pressure of the air supply device 100 and substituting it into the surge speed equation Nsur=f(P2), the current surge speed can be obtained, and the surge speed can be used to determine whether there is a surge risk under the current exhaust pressure and current operating speed of the air supply device 100. Among them, Nsur in the surge speed equation is the surge speed, and P2 is the final exhaust pressure. The equation form and equation coefficients of this equation are usually obtained by theoretical calculation or actual measurement fitting. However, as the environmental parameters of the air supply device 100 change, the surge speed calculated by the above equation will be inconsistent with the actual surge speed, thereby causing the air supply device 100 to fail in anti-surge control or the air supply device 100 to overreact in anti-surge.

[0044] Therefore, it is necessary to obtain the historical calibration parameters and current calibration parameters of the air supply device 100. Among them, the historical calibration parameters refer to the parameters of the air supply device 100 operation obtained when the surge speed is theoretically calculated or when the environment has not changed, and the historical calibration parameters include the historical final stage exhaust pressure, the historical ambient air pressure, the historical ambient temperature and the historical inter-stage intake temperature. It should be noted that the historical final stage exhaust pressure is the pressure of the exhaust gas of the last compression stage 20 collected by the air supply device 100 when the environment has not changed; the historical ambient air pressure is the ambient atmospheric pressure collected by the air supply device 100 when the environment has not changed; the historical ambient temperature is the temperature of the working environment collected by the air supply device 100 when the environment has not changed; the historical inter-stage intake temperature is the intake temperature of each compression stage 20 of the air supply device 100 collected when the environment has not changed.

[0045] The current calibration parameters are the parameters of the air supply device 100 operation acquired after the environment changes, and the current calibration parameters include the current ambient air pressure, the current ambient temperature, and the current interstage inlet air temperature. It should be noted that the current ambient air pressure is the ambient atmospheric pressure acquired by the air supply device 100 after the environment changes; the current ambient temperature is the temperature of the working environment acquired by the air supply device 100 after the environment changes; and the current interstage inlet air temperature is the inlet air temperature of each compression stage 20 of the air supply device 100 acquired after the environment changes.

[0046] The air supply device 100 also includes a second control device 40, which includes a processor 41 and a memory 42. The processor 41 can execute instructions for obtaining historical calibration parameters and current calibration parameters of the air supply device 100, and store the obtained historical calibration parameters and current calibration parameters of the air supply device 100 in the memory 42.

[0047] Then, the processor 41 can calculate the current surge speed of the air supply device 100 based on the acquired historical calibration parameters and current calibration parameters, and the processor 41 can determine the magnitude of the current speed of the air supply device 100 and the current surge speed.

[0048] When the processor 41 determines that the current rotation speed of the air supply device 100 is less than or equal to the current surge rotation speed, the air supply device 100 can be controlled to increase the current rotation speed to avoid the occurrence of surge.

[0049] When the processor 41 determines that the current rotation speed of the air supply device 100 is greater than the current surge rotation speed, the air supply device 100 can be controlled to continue operating at the current rotation speed.

[0050] In some embodiments, when the current speed of the air supply device 100 differs from the surge speed by a preset threshold, the processor 41 can control the air supply device 100 to increase the current speed. For example, the preset threshold is 500r / min, the current surge speed is 2000r / min, and when the current speed of the air supply device 100 is less than or equal to 2500r / min, the air supply device 100 needs to be controlled to increase the current speed.

[0051] See also Figure 1 In some embodiments, the air supply device 100 includes a plurality of compression stages 20 and at least one interstage intercooler 30, each interstage intercooler 30 is disposed between two adjacent compression stages 20, and the historical interstage intake air temperature and the current interstage intake air temperature are the temperatures after being cooled by the interstage intercooler 30.

[0052] Thus, by providing the interstage intercooler 30 between the compression stages 20 of the air supply device 100, the temperature of the high-temperature air after the air supply device 100 is pressurized can be reduced, so as to reduce the heat load of the motor and increase the intake air volume. Since the intake air temperature of each stage is different, different intake air temperatures will affect the surge speed, so by obtaining the temperature after cooling through the interstage intercooler 30, the influence of different intake air temperatures on the surge speed calculation can be reduced, and the accuracy of the surge speed calculation can be improved.

[0053] Specifically, the compression stage 20 of the air supply device 100 refers to a portion inside the air supply device 100 for reducing the volume of gas and increasing the pressure. The compression stage 20 generally includes components such as an impeller and a diffuser. Through the rotation of the impeller and the action of the diffuser, the gas obtains kinetic energy and converts it into pressure energy.

[0054] The air supply device 100 further includes an interstage intercooler 30, which is arranged between two adjacent compression stages 20, so that the function of the interstage intercooler 30 is to reduce the temperature of the gas entering the next stage after being pressurized by the previous compression stage 20. For example, when the gas enters the previous compression stage 20 for supercharging, the temperature will rise rapidly, and the density will decrease accordingly. Then the high-temperature gas flows through the interstage intercooler 30, and the interstage intercooler 30 dissipates the heat of the exhaust gas through the heat sink, thereby reducing the intake temperature of the gas entering the next compression stage 20. The low-temperature gas has a large density. Under the same conditions, it can reduce the heat load of the motor, increase the intake volume of the motor, and thus increase the power of the motor.

[0055] In some embodiments, no interstage intercooler 30 may be provided between adjacent compression stages 20. For example, the air supply device 100 includes four compression stages 20, wherein an interstage intercooler 30 is provided between the first compression stage 20 and the second compression stage 20, no interstage intercooler 30 is provided between the second compression stage 20 and the third compression stage 20, and an interstage intercooler 30 is provided between the third compression stage 20 and the fourth compression stage 20.

[0056] See also Figure 3 In some embodiments, step 012: calculating the current surge speed of the air supply device 100 according to the historical calibration parameters and the current calibration parameters includes:

[0057] Step 0121: determining a historical weighted intake air temperature according to the historical ambient temperature and the historical interstage intake air temperature;

[0058] Step 0122: determining a current weighted intake air temperature according to the current ambient temperature and the current interstage intake air temperature;

[0059] Step 0123: Calculate the current surge speed of the air supply device 100 according to the historical weighted intake temperature, the current weighted intake temperature, the historical final exhaust pressure, the historical ambient pressure and the current ambient pressure.

[0060] In this way, by determining the historical weighted intake temperature and the current weighted intake temperature, the influence of the ambient temperature on the surge speed and the influence of the inter-stage intake temperature on the surge speed can be reduced, thereby improving the accuracy of the surge speed calculation.

[0061] Specifically, after obtaining the historical ambient temperature and multiple historical inter-stage intake temperatures, the processor 41 can calculate the historical weighted intake temperature. After obtaining the current ambient temperature and multiple current inter-stage intake temperatures, the processor 41 can calculate the current weighted intake temperature. The historical weighted intake temperature and the current weighted intake temperature are intermediate quantities for calculating the current surge speed. After calculating the historical weighted intake temperature and the current weighted intake temperature, the processor 41 can calculate the current surge speed of the air supply device 100 according to the historical final stage exhaust pressure, the historical ambient pressure, and the current ambient pressure.

[0062] See also Figure 4 In some embodiments, step 0121: determining a historical weighted intake air temperature according to a historical ambient temperature and a historical interstage intake air temperature comprises:

[0063] Step 01211: Perform weighted calculation on the historical ambient temperature and the historical interstage intake temperature according to a first weight coefficient to obtain the historical weighted intake temperature, wherein the weight coefficient is obtained by fitting multiple test values.

[0064] In this way, by performing weighted calculation on the historical ambient temperature and the historical inter-stage intake air temperature, the historical weighted intake air temperature can be accurately obtained.

[0065] Specifically, after acquiring the historical ambient temperature and multiple historical inter-stage intake temperatures, the processor 41 can obtain the historical weighted intake temperature through weighted calculation. The formula for calculating the historical weighted intake temperature can be expressed as:

[0066]

[0067] Among them, Tineq c Represents the historical weighted intake temperature; T0 c Indicates the historical ambient temperature; Ti c (i=1, 2, 3, ...) represents the intake air temperature after the i-th interstage intercooler 30; a 0 , a 1 , a 2 , a 3 …is a first weight coefficient, and the first weight coefficient is obtained by acquiring test values ​​multiple times and performing fitting correction on the test values.

[0068] See also Figure 5 In some embodiments, step 0122: determining a current weighted intake air temperature according to a current ambient temperature and a current interstage intake air temperature, comprises:

[0069] Step 01221: Perform weighted calculation on the current ambient temperature and the current inter-stage intake temperature according to a second weight coefficient to obtain the current weighted intake temperature, where the second weight coefficient is the same as the first weight coefficient.

[0070] In this way, by performing weighted calculation on the current ambient temperature and the current inter-stage intake air temperature, the current weighted intake air temperature can be accurately obtained.

[0071] Specifically, after obtaining the current ambient temperature and multiple current inter-stage intake temperatures, the processor 41 can obtain the current weighted intake temperature through weighted calculation. The formula for calculating the current weighted intake temperature can be expressed as:

[0072]

[0073] Among them, Tineq R Represents the historical weighted intake temperature; T0 R Indicates the current ambient temperature; Ti R (i=1, 2, 3, ...) represents the intake air temperature after the i-th interstage intercooler 30; a 0 , a 1 , a 2 , a 3 ...is the second weight coefficient, and the second weight coefficient is the same as the first weight coefficient.

[0074] See also Figure 6 In some embodiments, step 012: calculating the current surge speed of the air supply device 100 according to the historical calibration parameters and the current calibration parameters includes:

[0075] Step 0124: determining a historical surge speed according to a ratio of a historical final stage exhaust pressure to a current ambient pressure;

[0076] Step 0125: Calculate the current surge speed of the air supply device 100 based on the historical calibration parameters, the current calibration parameters and the historical surge speed.

[0077] In this way, by determining the historical surge speed according to the ratio of the historical final stage exhaust pressure to the current ambient pressure, and calculating the current surge speed according to the historical surge speed, the influence of the ambient pressure on the surge speed can be reduced, thereby improving the accuracy of the surge speed calculation.

[0078] Specifically, after obtaining the current ambient pressure, the processor 41 compares the historical final stage exhaust pressure with the current ambient pressure, and substitutes the ratio as the historical final stage exhaust pressure into the surge speed equation Nsur=f(P2), so as to determine the historical surge speed, and then introduce the influence of the current ambient pressure on the historical surge speed. At this time, the historical surge speed includes the current ambient pressure and the historical ambient temperature.

[0079] Then, the processor 41 can calculate the current surge speed of the air supply device 100 according to the historical calibration parameters, the current calibration parameters and the historical surge speed.

[0080] See also Figure 7 In some embodiments, step 0125: calculating the current surge speed of the air supply device 100 according to the historical calibration parameters, the current calibration parameters and the historical surge speed includes:

[0081] Step 01251: Determine the current surge speed based on the historical surge speed, the current weighted intake temperature and the historical weighted intake temperature. The historical weighted intake temperature is determined based on the historical ambient temperature and the historical inter-stage intake temperature. The current weighted intake temperature is determined based on the current ambient temperature and the current inter-stage intake temperature.

[0082] In this way, by determining the current surge speed according to the historical surge speed, the current weighted intake temperature and the historical weighted intake temperature, the accuracy of the surge speed calculation can be improved.

[0083] Specifically, the processor 41 obtains the historical surge speed, the current weighted intake temperature and the historical weighted intake temperature, and can obtain the ratio of the interstage intake temperature by comparing the current weighted intake temperature with the historical weighted intake temperature, and then multiplies the square root of the ratio by the historical surge speed to obtain the current surge speed. The historical weighted intake temperature is determined based on the historical ambient temperature and the historical interstage intake temperature, the current weighted intake temperature is determined based on the current ambient temperature and the current interstage intake temperature, and the current surge speed is calculated as follows:

[0084]

[0085] Among them, Nsur act Indicates the current surge speed; Nsur indicates the historical surge speed; Tineq R Indicates the current weighted intake air temperature.

[0086] See also Figure 8 In order to better implement the control method of the embodiment of the present invention, the embodiment of the present invention further provides a first control device 10. The first control device 10 includes an acquisition module 11, a calculation module 12 and a control module 13; the acquisition module 11 is used to acquire the historical calibration parameters and current calibration parameters of the air supply device 100, the historical calibration parameters include the historical final stage exhaust pressure, the historical ambient air pressure, the historical ambient temperature and the historical interstage intake temperature, and the current calibration parameters include the current ambient air pressure, the current ambient temperature and the current interstage intake temperature; the calculation module 12 is used to calculate the current surge speed of the air supply device 100 according to the historical calibration parameters and the current calibration parameters; the control module 13 is used to control the current speed of the air supply device 100 according to the current surge speed.

[0087] The acquisition module 11 is specifically used to determine the historical weighted intake air temperature according to the historical ambient temperature and the historical inter-stage intake air temperature; and determine the current weighted intake air temperature according to the current ambient temperature and the current inter-stage intake air temperature.

[0088] The calculation module 12 is specifically used to calculate the current surge speed of the air supply device 100 according to the historical weighted intake temperature, the current weighted intake temperature, the historical final exhaust pressure, the historical ambient pressure and the current ambient pressure.

[0089] The acquisition module 11 is specifically used to perform weighted calculation on the historical ambient temperature and the historical inter-stage intake temperature according to a first weight coefficient to determine the historical weighted intake temperature, and the weight coefficient is obtained by fitting a plurality of test values.

[0090] The acquisition module 11 is specifically used to perform weighted calculation on the current ambient temperature and the current inter-stage intake temperature according to a second weight coefficient to determine the current weighted intake temperature, and the second weight coefficient is the same as the first weight coefficient.

[0091] The calculation module 12 is specifically used to determine the historical surge speed according to the ratio of the historical final stage exhaust pressure and the current ambient pressure; and calculate the current surge speed of the air supply device 100 according to the historical calibration parameters, the current calibration parameters and the historical surge speed.

[0092] The calculation module 12 is specifically used to determine the current surge speed based on the historical surge speed, the current weighted intake temperature and the historical weighted intake temperature. The historical weighted intake temperature is determined based on the historical ambient temperature and the historical inter-stage intake temperature, and the current weighted intake temperature is determined based on the current ambient temperature and the current inter-stage intake temperature.

[0093] In some embodiments, the first control device 10 may be disposed in the air supply device 100 , so as to implement the functions of the first acquisition module 11 , the calculation module 12 , and the control module 13 in the air supply device 100 .

[0094] In the above text, the first control device 10 is described from the perspective of a functional module in conjunction with the accompanying drawings. The functional module can be implemented in the form of hardware, can be implemented in the form of software instructions, or can be implemented in the form of a combination of hardware and software modules. Specifically, the steps of the method embodiment in the embodiment of the present invention can be completed by the hardware integrated logic circuit and / or software instructions in the processor 41, and the steps of the method disclosed in the embodiment of the present invention can be directly embodied as a hardware coding processor to execute, or can be executed by a combination of hardware and software modules in the coding processor. Optionally, the software module can be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 42, and the processor 41 reads the information in the memory 42, and completes the steps in the above method embodiment in conjunction with its hardware.

[0095] See also Figure 1 An air supply device provided in an embodiment of the present invention includes a control device and a motor, the control device is electrically connected to the motor, and the control device includes a first control device or a second control device.

[0096] Specifically, in one embodiment, please refer to Figure 1 The control device is a second control device, and the second control device can be electrically connected to the motor. The second control device can be a central processing unit or a micro control unit, and the motor can be controlled by the second control device to provide electrical energy to the air supply device, thereby urging the air supply device to work.

[0097] See also Fig. 9 The embodiment of the present invention further provides a non-volatile computer-readable storage medium 300 including a computer program 310. When the computer program 310 is executed by the processor 41, the steps of the control method of any of the above-mentioned embodiments are implemented. For the sake of brevity, they are not repeated here.

[0098] In the description of this specification, the descriptions with reference to the terms "certain embodiments", "in an example", "exemplarily", etc., mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0099] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0100] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A control method for an air supply device, characterized in that: The control method comprises: Obtaining historical calibration parameters and current calibration parameters of the air supply device, wherein the historical calibration parameters include historical final stage exhaust pressure, historical ambient air pressure, historical ambient temperature, and historical interstage air intake temperature, and the current calibration parameters include current ambient air pressure, current ambient temperature, and current interstage air intake temperature; Calculating a current surge speed of the air supply device according to the historical calibration parameters and the current calibration parameters; The current rotation speed of the air supply device is controlled to be greater than the current surge rotation speed.

2. The control method according to claim 1, characterized in that: The air supply device includes multiple compression stages and at least one interstage intercooler, each of the interstage intercoolers is arranged between two adjacent compression stages, and the historical interstage intake air temperature and the current interstage intake air temperature are the temperatures after cooling by the interstage intercooler.

3. The control method according to claim 1, characterized in that: The calculating the current surge speed of the air supply device according to the historical calibration parameters and the current calibration parameters includes: Determine a historical weighted intake air temperature according to the historical ambient temperature and the historical interstage intake air temperature, and determine a current weighted intake air temperature according to the current ambient temperature and the current interstage intake air temperature; The current surge speed of the air supply device is calculated according to the historical weighted intake temperature, the current weighted intake temperature, the historical final exhaust pressure, the historical ambient pressure and the current ambient pressure.

4. The control method according to claim 3, characterized in that: The determining the historical weighted intake air temperature according to the historical ambient temperature and the historical inter-stage intake air temperature comprises: The historical ambient temperature and the historical inter-stage intake temperature are weighted according to a first weight coefficient to obtain the historical weighted intake temperature, wherein the weight coefficient is obtained by fitting a plurality of test values.

5. The control method according to claim 3, characterized in that: The determining the current weighted intake air temperature according to the current ambient temperature and the current inter-stage intake air temperature comprises: The current ambient temperature and the current inter-stage intake air temperature are weightedly calculated according to a second weight coefficient to obtain the current weighted intake air temperature, wherein the second weight coefficient is the same as the first weight coefficient.

6. The control method according to claim 1, characterized in that: The calculating the current surge speed of the air supply device according to the historical calibration parameters and the current calibration parameters includes: Determining a historical surge speed according to a ratio of the historical final stage exhaust pressure to the current ambient pressure; The current surge speed of the air supply device is calculated according to the historical calibration parameters, the current calibration parameters and the historical surge speed.

7. The control method according to claim 6, characterized in that: The calculating the current surge speed of the air supply device according to the historical calibration parameters, the current calibration parameters and the historical surge speeds includes: The current surge speed is determined based on the historical surge speed, the current weighted intake temperature and the historical weighted intake temperature. The historical weighted intake temperature is determined based on the historical ambient temperature and the historical inter-stage intake temperature. The current weighted intake temperature is determined based on the current ambient temperature and the current inter-stage intake temperature.

8. A first control device, used for an air supply device, characterized in that: The first control device comprises: An acquisition module, used to acquire historical calibration parameters and current calibration parameters of the air supply device, wherein the historical calibration parameters include historical final stage exhaust pressure, historical ambient air pressure, historical ambient temperature and historical interstage intake air temperature, and the current calibration parameters include current ambient air pressure, current ambient temperature and current interstage intake air temperature; A calculation module, used for calculating the current surge speed of the air supply device according to the historical calibration parameters and the current calibration parameters; A control module is used to control the current speed of the air supply device according to the current surge speed.

9. A second control device, characterized in that: include: Processor and memory; A computer program is stored in the memory, and the computer program is executed by the processor. The computer program includes instructions for executing the control method according to any one of claims 1 to 7.

10. An air supply device, characterized in that: It comprises a control device and a motor, wherein the control device is electrically connected to the motor, and the control device is the first control device according to claim 8 or the second control device according to claim 9.

11. A non-volatile computer-readable storage medium containing a computer program, characterized in that: When the computer program is executed by a processor, the processor executes the control method according to any one of claims 1 to 7.

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