AVU valve durability test system and method

Abstract

The invention provides an AVU valve durability test system and method, and belongs to the technical field of automobile engine testing, and the system comprises a constant temperature box which is provided with an internal space for accommodating an AVU valve, a gas accommodating container which is connected with the AVU valve through a pipeline, and a control unit which is electrically connected with the AVU valve and is used for receiving a pressure regulation durability test instruction, the controller is used for acquiring a pressure regulation test input parameter based on the pressure regulation durability test instruction, generating a pressure regulation control signal based on the pressure regulation test input parameter, driving the AVU valve to open or close the load box based on the pressure regulation test input parameter and the pressure regulation control signal, and being in pipeline connection with the AVU valve and the thermotank; and the pressure load module is used for providing a pressure load for the AVU valve in the constant-temperature box when the AVU valve is driven to be opened or closed by the pressure regulating test input parameters and the pressure regulating control signals.

Description

Technical Field

[0001] The invention relates to the technical field of automobile engine testing, and in particular to an AVU valve durability test system and method. Background Art

[0002] The AVU valve (Air Valve Unit) is an engine compressed air control unit that can control pneumatic components such as the supercharger bleed valve and supercharger brake valve. Its reliability is particularly important. The existing single product durability test method has test requirements such as environmental conditions, valve control cycle and operation time, and performance testing. This valve is an imported technology, and the reliability application of the AVU valve is limited by imported technology. Therefore, the single product reliability verification technology brought about by the change in application scenarios is particularly important. The current AVU valve single product durability assessment is owned by a few suppliers. The AVU valve application scenario is the supplier's design conditions. It is difficult to get supplier support for applications that exceed the design conditions. The application assessment of the AVU valve can only be carried out under the conditions of the whole machine or on the user's vehicle, which is costly, long, and risky. Therefore, there is a technical problem in the existing technology of lacking a single product durability test for the AVU valve. Summary of the invention

[0003] In view of this, it is necessary to provide an AVU valve durability test system and method to solve the technical problem of lack of durability test on AVU valve single product in the prior art.

[0004] In order to solve the above technical problems, on the one hand, the present invention provides an AVU valve durability test system, comprising: A thermostatic box having an internal space for accommodating the AVU valve; An air receiving container connected to the AVU valve pipeline; A control unit is electrically connected to the AVU valve, and is used to receive a pressure regulation durability test instruction, obtain a pressure regulation test input parameter based on the pressure regulation durability test instruction, generate a pressure regulation control signal based on the pressure regulation test input parameter, and drive the AVU valve to open or close based on the pressure regulation test input parameter and the pressure regulation control signal; the pressure regulation control signal is: a duty cycle, time and number of cycles of the pressure regulation; the pressure regulation test input parameter is: a pressure regulation value and a pressure regulation cycle stage; The load box is connected to the AVU valve pipeline and the thermostatic box pipeline, and is used to provide a pressure load for the AVU valve in the thermostatic box when the pressure regulation test input parameters and the pressure regulation control signal drive the AVU valve to open or close.

[0005] In one possible implementation, The control unit is further used to receive an air leakage measurement durability test instruction, and drive the AVU valve to open or close based on the air leakage measurement durability test instruction; The gas leakage meter is connected to the AVU valve pipeline and the thermostat pipeline, and is used to measure the gas leaking from the thermostat when the AVU valve is opened or closed.

[0006] On the other hand, the present invention also provides an AVU valve durability test method, comprising: The control unit receives a voltage regulation durability test instruction, obtains voltage regulation test input parameters based on the voltage regulation durability test instruction, generates a voltage regulation control signal based on the voltage regulation test input parameters, and drives the AVU valve to open or close based on the voltage regulation test input parameters and the voltage regulation control signal; the voltage regulation control signal is: duty cycle, time and number of cycles of voltage regulation; the voltage regulation test input parameters are: voltage regulation value and voltage regulation cycle stage; The load bank provides a pressure load to the AVU valve in the thermostatic box when the AVU valve is opened or closed.

[0007] In a possible implementation, the method further includes: The control unit receives an air leakage measurement durability test instruction, and drives the AVU valve to open or close based on the air leakage measurement durability test instruction; The gas leakage meter measures the gas leakage from the AVU valve placed in a thermostatic chamber when the AVU valve is open or closed.

[0008] In one possible implementation, The control unit receives a pressure regulation durability test instruction of the AVU's pressure regulating valve or switching valve, obtains the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve based on the durability test instruction of the AVU's pressure regulating valve or switching valve, generates a pressure regulation control signal of the AVU's pressure regulating valve or switching valve based on the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve, and drives the AVU valve to open or close based on the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve and the pressure regulation control signal of the AVU's pressure regulating valve or switching valve.

[0009] In a possible implementation, the durability test instruction of the pressure regulating valve or switching valve of the AVU is used to obtain the pressure regulating test input parameters of the pressure regulating valve or switching valve of the AVU, and the pressure regulating control signal of the pressure regulating valve or switching valve of the AVU is generated based on the pressure regulating test input parameters of the pressure regulating valve or switching valve of the AVU, including: Acquire a first pressure regulating test input parameter of the AVU pressure regulating valve based on a durability test instruction of the AVU pressure regulating valve, and generate a first pressure regulating control signal of the AVU pressure regulating valve based on the first pressure regulating test input parameter of the AVU pressure regulating valve; Acquire a second pressure regulating test input parameter of the AVU pressure regulating valve based on the durability test instruction of the AVU pressure regulating valve, and generate a second pressure regulating control signal of the AVU pressure regulating valve based on the second pressure regulating test input parameter of the AVU pressure regulating valve; Acquire a third pressure regulating test input parameter of the pressure regulating valve of the AVU based on the durability test instruction of the pressure regulating valve of the AVU, and generate a third pressure regulating control signal of the pressure regulating valve of the AVU based on the third pressure regulating test input parameter of the pressure regulating valve of the AVU; Acquire a fourth pressure regulating test input parameter of the pressure regulating valve of the AVU based on the durability test instruction of the pressure regulating valve of the AVU, and generate a fourth pressure regulating control signal of the pressure regulating valve of the AVU based on the fourth pressure regulating test input parameter of the pressure regulating valve of the AVU; The parameter values ​​of the first parameter of the pressure regulating test input of the AVU's pressure regulating valve, the second parameter of the pressure regulating test input of the AVU's pressure regulating valve, the third parameter of the pressure regulating test input of the AVU's pressure regulating valve and the fourth parameter of the pressure regulating test input of the AVU's pressure regulating valve are different.

[0010] In one possible implementation, Acquire a first parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a first pressure regulating control signal of the switching valve of the AVU based on the first parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a second parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a second pressure regulating control signal of the switching valve of the AVU based on the second parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a third parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a third pressure regulating control signal of the switching valve of the AVU based on the third parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a fourth parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a fourth pressure regulating control signal of the switching valve of the AVU based on the fourth parameter of the pressure regulating test input of the switching valve of the AVU; The parameter values ​​of the first parameter of the pressure regulation test input of the AVU switching valve, the second parameter of the pressure regulation test input of the AVU switching valve, the third parameter of the pressure regulation test input of the AVU switching valve and the fourth parameter of the pressure regulation test input of the AVU switching valve are different.

[0011] In a possible implementation, the step of generating a pressure regulating control signal of the pressure regulating valve or switching valve of the AVU based on the pressure regulating test input parameter of the pressure regulating valve or switching valve of the AVU includes: The pressure regulating test input parameters of the pressure regulating valve or the switching valve of the AVU generate a duty cycle control signal of the pressure regulating valve or the switching valve of the AVU.

[0012] In a possible implementation, the pressure regulating test input parameter of the AVU pressure regulating valve or switching valve and the pressure regulating control signal of the AVU pressure regulating valve or switching valve drive the AVU valve to open or close, including: In the first stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the second stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the third stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the fourth stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; The first stage of the AVU's pressure regulating valve control, the second stage of the AVU's pressure regulating valve control, the third stage of the AVU's pressure regulating valve control and the fourth stage of the AVU's pressure regulating valve control are different time periods that are continuous in time sequence.

[0013] In one possible implementation, In the first stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the second stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the third stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of the pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of the pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of the pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of the pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the fourth stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on the first parameter of the pressure regulation test input of the AVU switching valve and the first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on the second parameter of the pressure regulation test input of the AVU switching valve and the second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on the third parameter of the pressure regulation test input of the AVU switching valve and the third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on the fourth parameter of the pressure regulation test input of the AVU switching valve and the fourth pressure regulation control signal of the AVU switching valve; The first stage of the AVU switching valve control, the second stage of the AVU switching valve control, the third stage of the AVU switching valve control and the fourth stage of the AVU switching valve control are different time periods that are continuous in time sequence.

[0014] The beneficial effects of the present invention are as follows: the AVU valve durability test system provided by the present invention comprises: a thermostatic box having an internal space for accommodating the AVU valve; an air container connected to the AVU valve pipeline; a control unit electrically connected to the AVU valve for receiving a pressure regulation durability test instruction, obtaining a pressure regulation test input parameter based on the pressure regulation durability test instruction, and generating a pressure regulation control signal based on the pressure regulation test input parameter, and driving the AVU valve to open or close based on the pressure regulation test input parameter and the pressure regulation control signal; the pressure regulation control signal is: the duty cycle, time and number of cycles of the pressure regulation; the pressure regulation test input parameter is: the pressure regulation value, the pressure regulation cycle stage; a load box connected to the AVU valve pipeline and to the thermostatic box pipeline, for providing a pressure load to the AVU valve in the thermostatic box when the pressure regulation test input parameter and the pressure regulation control signal drive the AVU valve to open or close. The present invention creatively integrates high pressure, dry air, temperature box, switching load and air leakage meter into an integrated AVU valve single product detection system, which can achieve the purpose of AVU valve durability test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 A schematic diagram of the structure of an embodiment of the AVU valve durability test system provided by the present invention; Figure 2 A system schematic diagram of an embodiment of the AVU valve durability test system provided by the present invention; Figure 3 A system circuit diagram of an embodiment of the AVU valve durability test system provided by the present invention; Figure 4 A schematic flow chart of an embodiment of the AVU valve durability test method provided by the present invention. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0018] In the description of the embodiments of the present application, unless otherwise specified, “plurality” means two or more than two.

[0019] The terms "including" and "having" and any variations thereof in the embodiments of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules not clearly listed or inherent to these processes, methods, products or equipment.

[0020] The naming or numbering of the steps in the embodiments of the present invention does not mean that the steps in the method flow must be executed in the time / logical sequence indicated by the naming or numbering. The execution order of the named or numbered process steps can be changed according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The present invention provides an AVU valve (Air Valve Unit, engine compressed air control unit) 101 durability test system and method, which are described below respectively.

[0023] Figure 1 A schematic diagram of an embodiment of the AVU valve 101 durability test system provided by the present invention includes: Figure 2 An embodiment of the AVU valve durability test system provided by the present invention is a system schematic diagram: The thermostatic box 102 has an internal space for accommodating the AVU valve 101; The gas receiving container 103 is connected to the AVU valve 101 through a pipeline; The control unit 104 is electrically connected to the AVU valve 101, and is used to receive a pressure regulation durability test instruction, obtain a pressure regulation test input parameter based on the pressure regulation durability test instruction, and generate a pressure regulation control signal based on the pressure regulation test input parameter, and drive the AVU valve 101 to open or close based on the pressure regulation test input parameter and the pressure regulation control signal; the pressure regulation control signal is: the duty cycle, time and number of cycles of the pressure regulation; the pressure regulation test input parameter is: the pressure regulation value, the pressure regulation cycle stage; The load box 105 is connected to the AVU valve 101 pipeline and the thermostat 102 pipeline, and is used to provide a pressure load for the AVU valve 101 in the thermostat 102 when the pressure regulation test input parameters and the pressure regulation control signal drive the AVU valve 101 to open or close.

[0024] It can be understood that the test environment conditions are provided by the temperature box 102, and the AVU valve 101 is placed in the temperature box 102 for assessment.

[0025] AVU valve 101 requires compressed air provided by a gas tank and a drying component, which has the functions of stabilizing pressure and drying air.

[0026] The control unit 104 is controlled based on a PLC (Programmable Logic Controller) sink interface, and the control signal is an analog PWM signal, as described below: The PWM signal is controlled by the PLC leakage interface, and the interface current is MAX0.5A; when the transistor is turned on, Y0 outputs a low level; when the transistor is not turned on, Y0 outputs a 24V high level; the frequency of the transistor being turned on and off can determine the frequency of the Y0 output level signal, thereby providing the control conditions for the PWM signal; Two 24V-DC power supplies of an external circuit are used to realize high voltage PWM (Pulse Width Modulation, a digital signal composed of high level and low level) (high level 24V, low level 10V), thereby realizing the action driving of the AVU valve 101; The PLC sink interface can output multi-channel control, making the control circuit output consistent and the power supply shared; The second pin of the AVU valve 101 is the pressure regulating valve control port, and the sixth pin of the AVU valve 101 is the switching valve control port. The two are switched by associated electric contacts, that is, one normally closed contact and one normally open contact, thereby realizing the switching of the valve.

[0027] The power supply voltage of the LN pin of the AVU valve 101 is 220V-AC.

[0028] The load after pressure regulation by the AVU valve 101 is provided by a load box, and the load box 105 is a sealed cavity with a specified volume.

[0029] When the AVU valve 101 is used for leakage detection, the second valve is connected to the leakage meter 201 for detection.

[0030] The specific test process of PLC cycle program control is shown in Table 1 and Table 2: Table 1: Pressure regulating valve cycle control

[0031] Table 2: Switching valve cycle control

[0032] It can be understood that the technical conditions of the pressure regulating valve are: PWM, high level 18.5-28.5V, low level not less than 0-10V; duty cycle range: 10%-90%; linearity: 0%-5%, 95%-100% input output 0kPa; Maximum output pressure: 750kPa.

[0033] It can be further understood that, in this solution, the PAM analog signal is implemented by PLC+external circuit power supply, and the selection of the pressure regulating function and the switching function of the AVU valve 101 is implemented by relay control.

[0034] The AVU valve 101 durability test system provided by the present invention is an AVU valve 101 single product detection system integrating high pressure, dry air, a temperature box 102 , a switching load box and an air leakage meter 105 .

[0035] It should be further explained that the present invention adopts a PLC leakage type interface to implement a high-voltage PWM signal (high level 24, low level 10V), directly drives the AVU valve 101, and realizes the durability assessment of the single product pressure regulation function of the AVU valve 101, and also realizes the durability assessment of the single product switching function of the AVU valve 101.

[0036] Figure 3 The system schematic diagram of an embodiment of the AVU valve 101 durability test system provided by the present invention includes: The control unit 104 is further configured to receive an air leakage measurement durability test instruction, and drive the AVU valve 101 to open or close based on the air leakage measurement durability test instruction; The gas leakage meter 201 is connected to the pipeline of the AVU valve 101 and the pipeline of the thermostat 102, and is used to measure the gas leaked from the thermostat 102 when the AVU valve 101 is opened or closed.

[0037] It can be understood that the control unit 104 is controlled based on the PLC sink interface, and the control signal is an analog PWM signal, as described below: The PWM signal is controlled by the PCL leakage interface, and the interface current is MAX0.5A; when the transistor is turned on, Y0 outputs a low level; when the transistor is not turned on, Y0 outputs a 24V high level; the frequency of the transistor being turned on and off can determine the frequency of the Y0 output level signal, thereby providing the control conditions for the PWM signal; Two 24V-DC power supplies of the external circuit are used to realize a high voltage PWM signal (high level 24V, low level 10V), thereby realizing the action drive of the AVU valve 101; The PLC sink interface can output multi-channel control, making the control circuit output consistent and the power supply shared; The second pin of the AVU valve 101 is the pressure regulating valve control port, and the sixth pin of the AVU valve 101 is the switching valve control port. The two are switched by associated electric contacts, that is, one normally closed contact and one normally open contact, thereby realizing the switching of the valve.

[0038] The power supply voltage of the LN pin of the AVU valve 101 is 220V-AC.

[0039] The load after pressure regulation by the AVU valve 101 is provided by the load box 201 , and the load box 105 is a sealed cavity with a specified volume.

[0040] When the AVU valve 101 is used for leakage detection, the second valve is connected to the leakage meter 201 for detection.

[0041] Figure 4 A schematic flow chart of an embodiment of the AVU valve durability test method provided by the present invention includes: S401, the control unit receives a voltage regulation durability test instruction, obtains voltage regulation test input parameters based on the voltage regulation durability test instruction, generates a voltage regulation control signal based on the voltage regulation test input parameters, and drives the AVU valve to open or close based on the voltage regulation test input parameters and the voltage regulation control signal; the voltage regulation control signal is: duty cycle, time and number of cycles of voltage regulation; the voltage regulation test input parameters are: voltage regulation value, voltage regulation cycle stage; S402, the load box provides a pressure load for the AVU valve in the thermostatic box when the AVU valve is opened or closed.

[0042] It can be understood that the control unit is controlled based on the PLC sink interface, and the control signal is an analog PWM signal, as follows: The PWM signal is controlled by the PCL leakage interface, and the interface current is MAX0.5A; when the transistor is turned on, Y0 outputs a low level; when the transistor is not turned on, Y0 outputs a 24V high level; the frequency of the transistor being turned on and off can determine the frequency of the Y0 output level signal, thereby providing the control conditions for the PWM signal; The two 24V-DC power supplies of the external circuit are used to realize the high-voltage PWM signal (high level 24V, low level 10V), thereby realizing the action drive of the AVU valve; The PLC sink interface can output multi-channel control, making the control circuit output consistent and the power supply shared; The second pin of the AVU valve is the pressure regulating valve control port, and the sixth pin of the AVU valve is the switching valve control port. The two are switched by associated electric contacts, that is, one normally closed contact and one normally open contact, thereby realizing the switching of the valve.

[0043] The supply voltage of the LN pin of the AVU valve is 220V-AC.

[0044] The load after the AVU valve pressure regulation is provided by the load box, which is a sealed cavity with a specified volume.

[0045] When the AVU valve is used for leakage detection, the second valve is connected to the leakage meter 106 for detection.

[0046] In an embodiment provided by the present invention, the method further comprises: The control unit receives an air leakage measurement durability test instruction, and drives the AVU valve to open or close based on the air leakage measurement durability test instruction; The gas leakage meter measures the gas leakage from the AVU valve placed in a thermostatic chamber when the AVU valve is open or closed.

[0047] It can be understood that the control unit is controlled based on the PLC sink interface, and the control signal is an analog PWM signal, as follows: The PWM signal is controlled by the PCL leakage interface, and the interface current is MAX0.5A; when the transistor is turned on, Y0 outputs a low level; when the transistor is not turned on, Y0 outputs a 24V high level; the frequency of the transistor being turned on and off can determine the frequency of the Y0 output level signal, thereby providing the control conditions for the PWM signal; The two 24V-DC power supplies of the external circuit are used to realize the high-voltage PWM signal (high level 24V, low level 10V), thereby realizing the action drive of the AVU valve; The PLC sink interface can output multi-channel control, making the control circuit output consistent and the power supply shared; The second pin of the AVU valve is the pressure regulating valve control port, and the sixth pin of the AVU valve is the switching valve control port. The two are switched by associated electric contacts, that is, one normally closed contact and one normally open contact, thereby realizing the switching of the valve.

[0048] The supply voltage of the LN pin of the AVU valve is 220V-AC.

[0049] The load after the AVU valve pressure regulation is provided by the load box, which is a sealed cavity with a specified volume.

[0050] When the AVU valve is tested for leakage, the second valve is connected and the leakage meter is connected for testing.

[0051] In the embodiments provided by the present invention, The control unit receives a pressure regulation durability test instruction of the AVU's pressure regulating valve or switching valve, obtains the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve based on the durability test instruction of the AVU's pressure regulating valve or switching valve, generates a pressure regulation control signal of the AVU's pressure regulating valve or switching valve based on the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve, and drives the AVU valve to open or close based on the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve and the pressure regulation control signal of the AVU's pressure regulating valve or switching valve.

[0052] It can be understood that the control unit is controlled based on the PLC sink interface, and the control signal is an analog PWM signal, as follows: The PWM signal is controlled by the PCL leakage interface, and the interface current is MAX0.5A; when the transistor is turned on, Y0 outputs a low level; when the transistor is not turned on, Y0 outputs a 24V high level; the frequency of the transistor being turned on and off can determine the frequency of the Y0 output level signal, thereby providing the control conditions for the PWM signal; The two 24V-DC power supplies of the external circuit are used to realize the high-voltage PWM signal (high level 24V, low level 10V), thereby realizing the action drive of the AVU valve; The PLC sink interface can output multi-channel control, making the control circuit output consistent and the power supply shared; The second pin of the AVU valve is the pressure regulating valve control port, and the sixth pin of the AVU valve is the switching valve control port. The two are switched by associated electric contacts, that is, one normally closed contact and one normally open contact, thereby realizing the switching of the valve.

[0053] The supply voltage of the LN pin of the AVU valve is 220V-AC.

[0054] The load after the AVU valve pressure regulation is provided by the load box, which is a sealed cavity with a specified volume.

[0055] When the AVU valve is tested for leakage, the second valve is connected and the leakage meter is connected for testing.

[0056] In the embodiments provided by the present invention, The method comprises: obtaining a pressure regulating test input parameter of the pressure regulating valve or switching valve of the AVU based on a durability test instruction of the pressure regulating valve or switching valve of the AVU, and generating a pressure regulating control signal of the pressure regulating valve or switching valve of the AVU based on the pressure regulating test input parameter of the pressure regulating valve or switching valve of the AVU, including: Acquire a first pressure regulating test input parameter of the AVU pressure regulating valve based on a durability test instruction of the AVU pressure regulating valve, and generate a first pressure regulating control signal of the AVU pressure regulating valve based on the first pressure regulating test input parameter of the AVU pressure regulating valve; Acquire a second pressure regulating test input parameter of the AVU pressure regulating valve based on the durability test instruction of the AVU pressure regulating valve, and generate a second pressure regulating control signal of the AVU pressure regulating valve based on the second pressure regulating test input parameter of the AVU pressure regulating valve; Acquire a third pressure regulating test input parameter of the pressure regulating valve of the AVU based on the durability test instruction of the pressure regulating valve of the AVU, and generate a third pressure regulating control signal of the pressure regulating valve of the AVU based on the third pressure regulating test input parameter of the pressure regulating valve of the AVU; Acquire a fourth pressure regulating test input parameter of the pressure regulating valve of the AVU based on the durability test instruction of the pressure regulating valve of the AVU, and generate a fourth pressure regulating control signal of the pressure regulating valve of the AVU based on the fourth pressure regulating test input parameter of the pressure regulating valve of the AVU; The parameter values ​​of the first parameter of the pressure regulating test input of the AVU's pressure regulating valve, the second parameter of the pressure regulating test input of the AVU's pressure regulating valve, the third parameter of the pressure regulating test input of the AVU's pressure regulating valve and the fourth parameter of the pressure regulating test input of the AVU's pressure regulating valve are different.

[0057] It can be understood that the control unit is controlled based on the PLC sink interface, and the control signal is an analog PWM signal, as follows: The PWM signal is controlled by the PCL leakage interface, and the interface current is MAX0.5A; when the transistor is turned on, Y0 outputs a low level; when the transistor is not turned on, Y0 outputs a 24V high level; the frequency of the transistor being turned on and off can determine the frequency of the Y0 output level signal, thereby providing the control conditions for the PWM signal; The two 24V-DC power supplies of the external circuit are used to realize the high-voltage PWM signal (high level 24V, low level 10V), thereby realizing the action drive of the AVU valve; The PLC sink interface can output multi-channel control, making the control circuit output consistent and the power supply shared; The second pin of the AVU valve is the pressure regulating valve control port, and the sixth pin of the AVU valve is the switching valve control port. The two are switched by associated electric contacts, that is, one normally closed contact and one normally open contact, thereby realizing the switching of the valve.

[0058] The supply voltage of the LN pin of the AVU valve is 220V-AC.

[0059] The load after the AVU valve pressure regulation is provided by the load box, which is a sealed cavity with a specified volume.

[0060] When the AVU valve is used for leakage detection, the second valve is connected to the leakage meter 106 for detection.

[0061] In the embodiments provided by the present invention, Acquire a first parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a first pressure regulating control signal of the switching valve of the AVU based on the first parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a second parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a second pressure regulating control signal of the switching valve of the AVU based on the second parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a third parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a third pressure regulating control signal of the switching valve of the AVU based on the third parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a fourth parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a fourth pressure regulating control signal of the switching valve of the AVU based on the fourth parameter of the pressure regulating test input of the switching valve of the AVU; The parameter values ​​of the first parameter of the pressure regulation test input of the AVU switching valve, the second parameter of the pressure regulation test input of the AVU switching valve, the third parameter of the pressure regulation test input of the AVU switching valve and the fourth parameter of the pressure regulation test input of the AVU switching valve are different.

[0062] It can be understood that the control unit is controlled based on the PLC sink interface, and the control signal is an analog PWM signal, as follows: The PWM signal is controlled by the PCL leakage interface, and the interface current is MAX0.5A; when the transistor is turned on, Y0 outputs a low level; when the transistor is not turned on, Y0 outputs a 24V high level; the frequency of the transistor being turned on and off can determine the frequency of the Y0 output level signal, thereby providing the control conditions for the PWM signal; The two 24V-DC power supplies of the external circuit are used to realize the high-voltage PWM signal (high level 24V, low level 10V), thereby realizing the action drive of the AVU valve; The PLC sink interface can output multi-channel control, making the control circuit output consistent and the power supply shared; The second pin of the AVU valve is the pressure regulating valve control port, and the sixth pin of the AVU valve is the switching valve control port. The two are switched by associated electric contacts, that is, one normally closed contact and one normally open contact, thereby realizing the switching of the valve.

[0063] The supply voltage of the LN pin of the AVU valve is 220V-AC.

[0064] The load after the AVU valve pressure regulation is provided by the load box, which is a sealed cavity with a specified volume.

[0065] When the AVU valve is tested for leakage, the second valve is connected and the leakage meter is connected for testing.

[0066] In the embodiments provided by the present invention, The pressure regulating control signal of the pressure regulating valve or the switching valve of the AVU is generated based on the pressure regulating test input parameters of the pressure regulating valve or the switching valve of the AVU, including: The pressure regulating test input parameters of the pressure regulating valve or the switching valve of the AVU generate a duty cycle control signal of the pressure regulating valve or the switching valve of the AVU.

[0067] It can be understood that the control unit is controlled based on the PLC sink interface, and the control signal is an analog PWM signal, as follows: The PWM signal is controlled by the PCL leakage interface, and the interface current is MAX0.5A; when the transistor is turned on, Y0 outputs a low level; when the transistor is not turned on, Y0 outputs a 24V high level; the frequency of the transistor being turned on and off can determine the frequency of the Y0 output level signal, thereby providing the control conditions for the PWM signal; The two 24V-DC power supplies of the external circuit are used to realize the high-voltage PWM signal (high level 24V, low level 10V), thereby realizing the action drive of the AVU valve; The PLC sink interface can output multi-channel control, making the control circuit output consistent and the power supply shared; The second pin of the AVU valve is the pressure regulating valve control port, and the sixth pin of the AVU valve is the switching valve control port. The two are switched by associated electric contacts, that is, one normally closed contact and one normally open contact, thereby realizing the switching of the valve.

[0068] The supply voltage of the LN pin of the AVU valve is 220V-AC.

[0069] The load after the AVU valve pressure regulation is provided by the load box, which is a sealed cavity with a specified volume.

[0070] When the AVU valve is tested for leakage, the second valve is connected and the leakage meter is connected for testing.

[0071] In the embodiments provided by the present invention, The AVU valve is driven to open or close based on the pressure regulating test input parameters of the AVU pressure regulating valve or switching valve and the pressure regulating control signal of the AVU pressure regulating valve or switching valve, including: In the first stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the second stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the third stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the fourth stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; The first stage of the AVU's pressure regulating valve control, the second stage of the AVU's pressure regulating valve control, the third stage of the AVU's pressure regulating valve control and the fourth stage of the AVU's pressure regulating valve control are different time periods that are continuous in time sequence.

[0072] It can be understood that the present invention adopts the PLC leakage type interface to realize the high voltage PWM signal (high level 24, low level 10V), directly drives the AVU valve, realizes the durability assessment of the AVU valve single product pressure regulation function, and also realizes the durability assessment of the AVU valve single product switching function.

[0073] In the embodiments provided by the present invention, In the first stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the second stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the third stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of the pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of the pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of the pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of the pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the fourth stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on the first parameter of the pressure regulation test input of the AVU switching valve and the first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on the second parameter of the pressure regulation test input of the AVU switching valve and the second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on the third parameter of the pressure regulation test input of the AVU switching valve and the third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on the fourth parameter of the pressure regulation test input of the AVU switching valve and the fourth pressure regulation control signal of the AVU switching valve; The first stage of the AVU switching valve control, the second stage of the AVU switching valve control, the third stage of the AVU switching valve control and the fourth stage of the AVU switching valve control are different time periods that are continuous in time sequence.

[0074] The AVU valve durability test system and method provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An AVU valve durability test system, characterized in that: include: A thermostatic box having an internal space for accommodating the AVU valve; An air receiving container connected to the AVU valve pipeline; A control unit is electrically connected to the AVU valve, and is used to receive a pressure regulation durability test instruction, obtain a pressure regulation test input parameter based on the pressure regulation durability test instruction, generate a pressure regulation control signal based on the pressure regulation test input parameter, and drive the AVU valve to open or close based on the pressure regulation test input parameter and the pressure regulation control signal; the pressure regulation control signal is: a duty cycle, time and number of cycles of the pressure regulation; the pressure regulation test input parameter is: a pressure regulation value and a pressure regulation cycle stage; The load box is connected to the AVU valve pipeline and the thermostatic box pipeline, and is used to provide a pressure load for the AVU valve in the thermostatic box when the pressure regulation test input parameters and the pressure regulation control signal drive the AVU valve to open or close.

2. The AVU valve durability test system according to claim 1, characterized in that: The control unit is further used to receive an air leakage measurement durability test instruction, and drive the AVU valve to open or close based on the air leakage measurement durability test instruction; The gas leakage meter is connected to the AVU valve pipeline and the thermostat pipeline, and is used to measure the gas leaking from the thermostat when the AVU valve is opened or closed.

3. An AVU valve durability test method, based on the AVU valve durability test system according to any one of claims 1-2, characterized in that: The method comprises: The control unit receives a voltage regulation durability test instruction, obtains voltage regulation test input parameters based on the voltage regulation durability test instruction, generates a voltage regulation control signal based on the voltage regulation test input parameters, and drives the AVU valve to open or close based on the voltage regulation test input parameters and the voltage regulation control signal; the voltage regulation control signal is: duty cycle, time and number of cycles of voltage regulation; the voltage regulation test input parameters are: voltage regulation value and voltage regulation cycle stage; The load bank provides a pressure load to the AVU valve in the thermostatic box when the AVU valve is opened or closed.

4. The AVU valve durability test method according to claim 3, characterized in that: The method further comprises: The control unit receives an air leakage measurement durability test instruction, and drives the AVU valve to open or close based on the air leakage measurement durability test instruction; The gas leakage meter measures the gas leakage from the AVU valve placed in a thermostatic chamber when the AVU valve is open or closed.

5. The AVU valve durability test method according to claim 3, characterized in that: The control unit receives a pressure regulation durability test instruction of the AVU's pressure regulating valve or switching valve, obtains the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve based on the durability test instruction of the AVU's pressure regulating valve or switching valve, generates a pressure regulation control signal of the AVU's pressure regulating valve or switching valve based on the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve, and drives the AVU valve to open or close based on the pressure regulation test input parameters of the AVU's pressure regulating valve or switching valve and the pressure regulation control signal of the AVU's pressure regulating valve or switching valve.

6. The AVU valve durability test method according to claim 5, characterized in that: The durability test instruction of the pressure regulating valve or switching valve of the AVU is used to obtain the pressure regulating test input parameters of the pressure regulating valve or switching valve of the AVU, and generate the pressure regulating control signal of the pressure regulating valve or switching valve of the AVU based on the pressure regulating test input parameters of the pressure regulating valve or switching valve of the AVU, including: Acquire a first pressure regulating test input parameter of the AVU pressure regulating valve based on a durability test instruction of the AVU pressure regulating valve, and generate a first pressure regulating control signal of the AVU pressure regulating valve based on the first pressure regulating test input parameter of the AVU pressure regulating valve; Acquire a second pressure regulating test input parameter of the AVU pressure regulating valve based on the durability test instruction of the AVU pressure regulating valve, and generate a second pressure regulating control signal of the AVU pressure regulating valve based on the second pressure regulating test input parameter of the AVU pressure regulating valve; Acquire a third pressure regulating test input parameter of the pressure regulating valve of the AVU based on the durability test instruction of the pressure regulating valve of the AVU, and generate a third pressure regulating control signal of the pressure regulating valve of the AVU based on the third pressure regulating test input parameter of the pressure regulating valve of the AVU; Acquire a fourth pressure regulating test input parameter of the pressure regulating valve of the AVU based on the durability test instruction of the pressure regulating valve of the AVU, and generate a fourth pressure regulating control signal of the pressure regulating valve of the AVU based on the fourth pressure regulating test input parameter of the pressure regulating valve of the AVU; The parameter values ​​of the first parameter of the pressure regulating test input of the AVU's pressure regulating valve, the second parameter of the pressure regulating test input of the AVU's pressure regulating valve, the third parameter of the pressure regulating test input of the AVU's pressure regulating valve and the fourth parameter of the pressure regulating test input of the AVU's pressure regulating valve are different.

7. The AVU valve durability test method according to claim 6, characterized in that: Acquire a first parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a first pressure regulating control signal of the switching valve of the AVU based on the first parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a second parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a second pressure regulating control signal of the switching valve of the AVU based on the second parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a third parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a third pressure regulating control signal of the switching valve of the AVU based on the third parameter of the pressure regulating test input of the switching valve of the AVU; Acquire a fourth parameter of a pressure regulating test input of the switching valve of the AVU based on a durability test instruction of the switching valve of the AVU, and generate a fourth pressure regulating control signal of the switching valve of the AVU based on the fourth parameter of the pressure regulating test input of the switching valve of the AVU; The parameter values ​​of the first parameter of the pressure regulation test input of the AVU switching valve, the second parameter of the pressure regulation test input of the AVU switching valve, the third parameter of the pressure regulation test input of the AVU switching valve and the fourth parameter of the pressure regulation test input of the AVU switching valve are different.

8. The AVU valve durability test method according to claim 6, characterized in that: The step of generating a pressure regulating control signal of the pressure regulating valve or switching valve of the AVU based on the pressure regulating test input parameter of the pressure regulating valve or switching valve of the AVU includes: The pressure regulating test input parameters of the pressure regulating valve or the switching valve of the AVU generate a duty cycle control signal of the pressure regulating valve or the switching valve of the AVU.

9. The AVU valve durability test method according to claim 3, characterized in that: The pressure regulating test input parameters of the AVU pressure regulating valve or switching valve and the pressure regulating control signal of the AVU pressure regulating valve or switching valve drive the AVU valve to open or close, including: In the first stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the second stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the third stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; In the fourth stage of the pressure regulating valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulating test input of the AVU pressure regulating valve and a first pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulating test input of the AVU pressure regulating valve and a second pressure regulating control signal of the AVU pressure regulating valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulating test input of the AVU pressure regulating valve and a third pressure regulating control signal of the AVU pressure regulating valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulating test input of the AVU pressure regulating valve and a fourth pressure regulating control signal of the AVU pressure regulating valve; The first stage of the AVU's pressure regulating valve control, the second stage of the AVU's pressure regulating valve control, the third stage of the AVU's pressure regulating valve control and the fourth stage of the AVU's pressure regulating valve control are different time periods that are continuous in time sequence.

10. The AVU valve durability test method according to claim 9, characterized in that: In the first stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the second stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of a pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of a pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of a pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of a pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the third stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on a first parameter of the pressure regulation test input of the AVU switching valve and a first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a second parameter of the pressure regulation test input of the AVU switching valve and a second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on a third parameter of the pressure regulation test input of the AVU switching valve and a third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on a fourth parameter of the pressure regulation test input of the AVU switching valve and a fourth pressure regulation control signal of the AVU switching valve; In the fourth stage of the switching valve control of the AVU, the AVU valve is driven to open or close based on the first parameter of the pressure regulation test input of the AVU switching valve and the first pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on the second parameter of the pressure regulation test input of the AVU switching valve and the second pressure regulation control signal of the AVU switching valve, the AVU valve is driven to open or close based on the third parameter of the pressure regulation test input of the AVU switching valve and the third pressure regulation control signal of the AVU switching valve, and the AVU valve is driven to open or close based on the fourth parameter of the pressure regulation test input of the AVU switching valve and the fourth pressure regulation control signal of the AVU switching valve; The first stage of the AVU switching valve control, the second stage of the AVU switching valve control, the third stage of the AVU switching valve control and the fourth stage of the AVU switching valve control are different time periods that are continuous in time sequence.

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