Testing Method, Device, Electronic Equipment and Storage Medium for Abnormal Noise of Shock Absorber Valve System

Abstract

The present application relates to the technical field of vehicle NVH testing, and particularly relates to a method, device, electronic device and storage medium for testing abnormal noise of a shock absorber valve system. The method includes: obtaining a knuckle signal, an exciter piston rod signal, a body vibration signal, a shock absorber displacement signal and a shock absorber speed signal during the driving of the vehicle; performing time-frequency analysis and wavelet analysis processing on the knuckle signal, the exciter piston rod signal and the body vibration signal to obtain an abnormal noise characteristic signal; identifying the current stroke and current speed of the shock absorber according to the shock absorber displacement signal and the shock absorber speed signal, and determining the abnormal noise test result of the shock absorber valve system according to the current stroke, the current speed and the abnormal noise characteristic signal. Thereby, the problem that the abnormal noise of the shock absorber valve system mostly relies on subjective identification and improvement by technicians and the test accuracy is low is solved. It can be accurate to the corresponding stroke and speed section when the abnormal noise occurs, with high accuracy, and is simple and fast.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle NVH (Noise, Vibration, Harshness) testing, and particularly relates to a method, device, electronic device and storage medium for testing abnormal noise of a shock absorber valve system. Background Art

[0002] In recent years, since the main noise sources and vibration sources on vehicles have been well controlled, the noise problems of other components that were previously ignored have gradually been exposed. Among them, the abnormal noise problem of the suspension shock absorber has become one of the hotspots of user complaints and is also one of the technical problems that plague vehicle manufacturers and shock absorber supporting factories.

[0003] As one of the important structural components of the vehicle suspension system, the hydraulic shock absorber plays a key role in the ride comfort and handling stability of the vehicle. The valve system structure inside the shock absorber determines that it will inevitably generate impact vibrations during the compression and rebound commutation processes, thereby exciting noise. In severe cases, it will cause the in-vehicle sound quality to deteriorate, which is usually referred to as abnormal noise of the shock absorber.

[0004] In the related art, mostly experienced abnormal noise engineers and shock absorber tuning engineers drive and evaluate on abnormal noise characteristic roads with different valve system states on the actual vehicle, and select according to the subjective evaluation results.

[0005] However, the related art has high subjectivity, high dependence on personnel, and low accuracy and efficiency. Summary of the Invention

[0006] The present application provides a method, device, electronic device and storage medium for testing abnormal noise of a shock absorber valve system, so as to solve the problem that the shock absorber valve system mostly relies on subjective identification by technicians and has low improvement efficiency, can be accurate to the corresponding stroke and speed section when abnormal noise occurs, has high accuracy, and is simple and fast.

[0007] The first aspect embodiment of the present application provides a method for testing abnormal noise of a shock absorber valve system, including the following steps: obtaining a steering knuckle signal, a shock absorber piston rod signal, a vehicle body vibration signal, a shock absorber displacement signal, and a shock absorber speed signal during the driving process of the vehicle; performing time-frequency analysis and wavelet analysis processing on the steering knuckle signal, the shock absorber piston rod signal, and the vehicle body vibration signal to obtain an abnormal noise characteristic signal; and identifying the current stroke and current speed of the shock absorber according to the shock absorber displacement signal and the shock absorber speed signal, and determining the abnormal noise test result of the shock absorber valve system according to the current stroke, the current speed, and the abnormal noise characteristic signal.

[0008] Optionally, in some embodiments, the method for testing abnormal noise of the shock absorber valve system further includes: generating an optimization strategy for the shock absorber valve system according to the test result of the abnormal noise of the shock absorber valve system; extracting a first position corresponding to the shock absorber piston valve at the current speed and a second position corresponding to the shock absorber bottom valve at the current speed from the optimization strategy; adjusting the position of the shock absorber piston valve to the first position, and / or adjusting the position of the shock absorber bottom valve to the second position

[0009] Optionally, in some embodiments, before obtaining the knuckle signal, the shock absorber piston rod signal, the vehicle body vibration signal, the shock absorber displacement signal, and the shock absorber speed signal during the driving of the vehicle, it further includes: controlling the vehicle to travel on a road surface with abnormal noise characteristics at a preset vehicle speed.

[0010] Optionally, in some embodiments, the current stroke of the shock absorber is the compression stroke or the recovery stroke of the shock absorber.

[0011] An embodiment of the second aspect of the present application provides a test device for abnormal noise of a shock absorber valve system, including: an acquisition module for acquiring a knuckle signal, a shock absorber piston rod signal, a vehicle body vibration signal, a shock absorber displacement signal, and a shock absorber speed signal during the driving of the vehicle; a processing module for performing time-frequency analysis and wavelet analysis processing on the knuckle signal, the shock absorber piston rod signal, and the vehicle body vibration signal to obtain an abnormal noise characteristic signal; and a test module for identifying the current stroke and the current speed of the shock absorber according to the shock absorber displacement signal and the shock absorber speed signal, and determining the test result of the abnormal noise of the shock absorber valve system according to the current stroke, the current speed, and the abnormal noise characteristic signal.

[0012] Optionally, in some embodiments, the above test device for abnormal noise of the shock absorber valve system is further configured to: generate an optimization strategy for the shock absorber valve system according to the test result of the abnormal noise of the shock absorber valve system; extract a first position corresponding to the shock absorber piston valve at the current speed and a second position corresponding to the shock absorber bottom valve at the current speed from the optimization strategy; adjust the position of the shock absorber piston valve to the first position, and / or adjust the position of the shock absorber bottom valve to the second position.

[0013] Optionally, in some embodiments, before obtaining the knuckle signal, the shock absorber piston rod signal, the vehicle body vibration signal, the shock absorber displacement signal, and the shock absorber speed signal during the driving of the vehicle, it further includes: controlling the vehicle to travel on a road surface with abnormal noise characteristics at a preset vehicle speed.

[0014] Optionally, in some embodiments, the current stroke of the shock absorber is the compression stroke or the recovery stroke of the shock absorber.

[0015] In a third aspect embodiment of the present application, an electronic device is provided, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor executes the program to implement the method for testing abnormal noise of the shock absorber valve system as described in the above embodiments.

[0016] In a fourth aspect embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored, and the program is executed by a processor to implement the method for testing abnormal noise of the shock absorber valve system as described in the above embodiments.

[0017] Thus, by acquiring the knuckle signal, shock absorber piston rod signal, body vibration signal, shock absorber displacement signal, and shock absorber speed signal during vehicle driving, performing time-frequency analysis and wavelet analysis processing on the knuckle signal, shock absorber piston rod signal, and body vibration signal to obtain abnormal noise characteristic signals, identifying the current stroke and current speed of the shock absorber according to the shock absorber displacement signal and shock absorber speed signal, and determining the abnormal noise test result of the shock absorber valve system according to the current stroke, current speed, and abnormal noise characteristic signals. Thus, the problem that the abnormal noise of the shock absorber valve system mainly relies on subjective identification and improvement by technicians with low test accuracy is solved, and it can be accurate to the corresponding stroke and speed section when abnormal noise occurs, with high accuracy, and is simple and fast.

[0018] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, where:

[0020] Figure 1 is a flowchart of the method for testing abnormal noise of the shock absorber valve system according to an embodiment of the present application;

[0021] Figure 2 is a schematic cross-sectional view of a shock absorber body, a spring, and a connecting plate according to an embodiment of the present application;

[0022] Figure 3 is an example diagram of a test environment according to a specific embodiment of the present application;

[0023] Figure 4 is a schematic diagram of the test device for abnormal noise of the shock absorber valve system according to an embodiment of the present application;

[0024] Figure 5 is a schematic diagram of the electronic device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, but should not be construed as limiting the present application.

[0026] The test method, device, electronic device, and storage medium for abnormal noise of a shock absorber valve system according to an embodiment of the present application will be described below with reference to the accompanying drawings. In view of the problem that the shock absorber valve system in the above-mentioned background art relies mainly on subjective identification and improvement by technicians and has low accuracy, the present application provides a test method for abnormal noise of a shock absorber valve system. In this method, by acquiring the knuckle signal, shock absorber piston rod signal, body vibration signal, shock absorber displacement signal, and shock absorber speed signal during the vehicle's driving process, performing time-frequency analysis and wavelet analysis processing on the knuckle signal, shock absorber piston rod signal, and body vibration signal to obtain an abnormal noise characteristic signal, and identifying the current stroke and current speed of the shock absorber according to the shock absorber displacement signal and shock absorber speed signal, and determining the abnormal noise test result of the shock absorber valve system based on the current stroke, current speed, and abnormal noise characteristic signal. Thus, the problem that the shock absorber valve system relies mainly on subjective identification and improvement by technicians and has low test accuracy is solved. It can be accurate to the corresponding stroke and speed section when abnormal noise occurs, with high accuracy, and is simple and fast.

[0027] Specifically, Figure 1 is a schematic flowchart of a test method for abnormal noise of a shock absorber valve system provided by an embodiment of the present application.

[0028] As Figure 1 shown, the test method for abnormal noise of the shock absorber valve system includes the following steps:

[0029] In step S101, acquire the knuckle signal, shock absorber piston rod signal, body vibration signal, shock absorber displacement signal, and shock absorber speed signal during the vehicle's driving process.

[0030] Specifically, as Figure 2 shown, Figure 2 is a schematic cross-sectional view of a shock absorber body, a spring, and a connecting plate according to an embodiment of the present application. The knuckle signal, shock absorber piston rod signal, and body vibration signal can be acquired by vibration acceleration sensors.

[0031] Preferably, the working frequency range of the vibration acceleration sensor is not less than 2048 Hz, and the displacement signal of the shock absorber can be acquired by a wire-drawing displacement sensor, and the working accuracy of the wire-drawing displacement sensor is not lower than 0.1 mm.

[0032] Optionally, in some embodiments, before obtaining the knuckle signal, shock absorber piston rod signal, body vibration signal, shock absorber displacement signal, and shock absorber speed signal during vehicle driving, it further includes: controlling the vehicle to drive on a road surface with abnormal noise characteristics at a preset vehicle speed.

[0033] Wherein, the preset vehicle speed can be a vehicle speed preset by the user, a vehicle speed obtained through a limited number of experiments, or a vehicle speed obtained through a limited number of computer simulations, and specific limitations are not made here.

[0034] Specifically, as Figure 3 shown, the embodiment of the present application can use the road surface with abnormal noise characteristics as an excitation source, control the vehicle to drive on the road surface with abnormal noise characteristics at a preset vehicle speed, and through the excitation of the road surface with abnormal noise characteristics, use an acceleration sensor to pick up the knuckle, actuator piston rod, and body vibration signals respectively, and use a displacement sensor to pick up the shock absorber displacement and speed signals.

[0035] In step S102, time-frequency analysis and wavelet analysis processing are performed on the knuckle signal, shock absorber piston rod signal, and body vibration signal to obtain an abnormal noise characteristic signal.

[0036] Wherein, the embodiment of the present application can process the shock absorber piston rod signal and body vibration signal through a data acquisition and analyzer with time-frequency analysis and wavelet analysis functions. Preferably, the frequency resolution is 1.0 Hz.

[0037] Specifically, in the embodiment of the present application, after obtaining the knuckle signal, shock absorber piston rod signal, body vibration signal, shock absorber displacement signal, and shock absorber speed signal, time-frequency analysis and wavelet analysis processing are performed on the knuckle signal, shock absorber piston rod signal, and body vibration signal to obtain abnormal noise characteristics.

[0038] In step S103, the current stroke and current speed of the shock absorber are identified according to the shock absorber displacement signal and shock absorber speed signal, and the abnormal noise test result of the shock absorber valve system is determined according to the current stroke, current speed, and abnormal noise characteristic signal.

[0039] Optionally, in some embodiments, the current stroke of the shock absorber is the compression stroke or the rebound stroke of the shock absorber. Specifically, in the embodiments of the present application, the vehicle can be driven on a road surface with abnormal noise characteristics at a specified vehicle speed under vehicle conditions. The road surface with abnormal noise characteristics serves as the excitation source, and the transmission path is: tire → steering knuckle → shock absorber → vehicle body. Response recognition is performed on the steering knuckle, the shock absorber piston rod, and the vehicle body respectively. An acceleration sensor (Z direction of the vehicle) is used to pick up the response vibration magnitude, and a displacement sensor is used to pick up the working stroke and speed response of the shock absorber. The vibration signals of the steering knuckle, the shock absorber piston rod, and the vehicle body are processed through time-frequency analysis and wavelet analysis to identify the abnormal noise characteristics. Combining the working stroke (compression or rebound) and working speed of the shock absorber when the abnormal noise occurs, the valve plate corresponding to the shock absorber valve system (piston valve or bottom valve) at a preset speed is confirmed and optimized, and then the vehicle is tested for verification until there is no abnormal noise.

[0040] Optionally, in some embodiments, the above method for testing the abnormal noise of the shock absorber valve system further includes: generating an optimization strategy for the shock absorber valve system according to the test result of the abnormal noise of the shock absorber valve system; extracting the first position corresponding to the shock absorber piston valve at the current speed and the second position corresponding to the shock absorber bottom valve at the current speed from the optimization strategy; adjusting the position of the shock absorber piston valve to the first position and / or adjusting the position of the shock absorber bottom valve to the second position.

[0041] Wherein, the first position may be the target position after optimization of the piston valve, and the second position may be the target position after optimization of the bottom valve.

[0042] Specifically, in the embodiments of the present application, an optimization strategy can be generated by combining the moment when the abnormal noise characteristic signal occurs with the valve plate of the piston valve or the bottom valve at a preset speed at the current moment, and the piston valve and / or the bottom valve can be adjusted according to the optimization strategy. Specifically, the piston valve can be adjusted to the first position, or a suitable piston valve can be replaced to the first position. Similarly, the bottom valve can be adjusted to the second position, or a suitable bottom valve can be replaced to the second position.

[0043] According to the method for testing the abnormal noise of the shock absorber valve system proposed in the embodiments of the present application, by acquiring the steering knuckle signal, the shock absorber piston rod signal, the vehicle body vibration signal, the shock absorber displacement signal, and the shock absorber speed signal during the driving process of the vehicle, and performing time-frequency analysis and wavelet analysis on the steering knuckle signal, the shock absorber piston rod signal, and the vehicle body vibration signal, an abnormal noise characteristic signal is obtained, and the current stroke and current speed of the shock absorber are identified according to the shock absorber displacement signal and the shock absorber speed signal, and the test result of the abnormal noise of the shock absorber valve system is determined according to the current stroke, the current speed, and the abnormal noise characteristic signal. Thus, the problem that the identification and improvement of the shock absorber valve system mainly rely on the subjective judgment of technicians and the test accuracy is low is solved. It can be accurate to the stroke and speed section corresponding to the occurrence of abnormal noise, with high accuracy, and is simple and fast.

[0044] Next, a test device for abnormal noise of a shock absorber valve system according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0045] Figure 4 It is a block schematic diagram of a test device for abnormal noise of a shock absorber valve system according to an embodiment of the present application.

[0046] As Figure 4 shown, the test device 10 for abnormal noise of a shock absorber valve system includes: an acquisition module 100, a processing module 200, and a test module 300.

[0047] The acquisition module 100 is configured to acquire a knuckle signal, a shock absorber piston rod signal, a vehicle body vibration signal, a shock absorber displacement signal, and a shock absorber speed signal during the driving of the vehicle; the processing module 200 is configured to perform time-frequency analysis and wavelet analysis processing on the knuckle signal, the shock absorber piston rod signal, and the vehicle body vibration signal to obtain an abnormal noise characteristic signal; and the test module 300 is configured to identify the current stroke and current speed of the shock absorber according to the shock absorber displacement signal and the shock absorber speed signal, and determine the abnormal noise test result of the shock absorber valve system according to the current stroke, the current speed, and the abnormal noise characteristic signal.

[0048] Optionally, in some embodiments, the above-mentioned test device 10 for abnormal noise of a shock absorber valve system is further configured to: generate an optimization strategy for the shock absorber valve system according to the abnormal noise test result of the shock absorber valve system; extract a first position corresponding to the shock absorber piston valve at the current speed and a second position corresponding to the shock absorber bottom valve at the current speed from the optimization strategy; and adjust the position of the shock absorber piston valve to the first position, and / or adjust the position of the shock absorber bottom valve to the second position.

[0049] Optionally, in some embodiments, before acquiring the knuckle signal, the shock absorber piston rod signal, the vehicle body vibration signal, the shock absorber displacement signal, and the shock absorber speed signal during the driving of the vehicle, the acquisition module 100 further includes: controlling the vehicle to travel on a road surface with abnormal noise characteristics at a preset vehicle speed.

[0050] Optionally, in some embodiments, the current stroke of the shock absorber is a compression stroke or a rebound stroke of the shock absorber.

[0051] It should be noted that the foregoing explanations of the embodiments of the test method for abnormal noise of a shock absorber valve system also apply to the test device for abnormal noise of a shock absorber valve system in this embodiment, and will not be elaborated here.

[0052] The testing device for abnormal noise of the shock absorber valve system according to the embodiments of the present application obtains the knuckle signal, shock absorber piston rod signal, vehicle body vibration signal, shock absorber displacement signal, and shock absorber speed signal during the driving of the vehicle, performs time-frequency analysis and wavelet analysis processing on the knuckle signal, shock absorber piston rod signal, and vehicle body vibration signal to obtain the abnormal noise characteristic signal, identifies the current stroke and current speed of the shock absorber according to the shock absorber displacement signal and shock absorber speed signal, and determines the abnormal noise test result of the shock absorber valve system according to the current stroke, current speed, and abnormal noise characteristic signal. Thus, the problem that the abnormal noise of the shock absorber valve system mostly relies on subjective identification and improvement by technicians and has low test accuracy is solved. It can be accurate to the corresponding stroke and speed segment when abnormal noise occurs, with high accuracy, and is simple and fast.

[0053] Figure 5 The structural schematic diagram of the electronic device provided by the embodiments of the present application. The electronic device may include:

[0054] A memory 501, a processor 502, and a computer program stored on the memory 501 and executable on the processor 502.

[0055] When the processor 502 executes the program, it implements the testing method for abnormal noise of the shock absorber valve system provided in the above embodiments.

[0056] Further, the electronic device further includes:

[0057] A communication interface 503 for communication between the memory 501 and the processor 502.

[0058] The memory 501 is used to store a computer program executable on the processor 502.

[0059] The memory 501 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0060] If the memory 501, the processor 502, and the communication interface 503 are independently implemented, the communication interface 503, the memory 501, and the processor 502 can be interconnected through a bus and communicate with each other. The bus may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of representation, Figure 5It is represented by only one thick line, but it does not mean that there is only one bus or one type of bus.

[0061] Optionally, in a specific implementation, if the memory 501, the processor 502, and the communication interface 503 are integrated on a single chip, the memory 501, the processor 502, and the communication interface 503 can complete communication with each other through an internal interface.

[0062] The processor 502 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0063] The embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the above-mentioned test method for abnormal noise of the shock absorber valve train is implemented.

[0064] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0065] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0066] Any process or method description, whether in a flowchart or otherwise described herein, can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a customized logical function or process. The scope of the preferred embodiments of this application includes additional implementations where functions may be performed in a substantially simultaneous manner or in the reverse order according to the functions involved, rather than in the order shown or discussed, as would be understood by those skilled in the art to which the embodiments of this application pertain.

[0067] It should be understood that the various parts of this application can be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art can be used: discrete logic circuits with logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits with appropriate combinational logic gate circuits, programmable gate arrays, field-programmable gate arrays, and the like.

[0068] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried out in implementing the methods of the above embodiments can be completed by instructing relevant hardware through a program. The said program can be stored in a computer-readable storage medium, and when executed, includes one or a combination of the steps of the method embodiments.

[0069] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A testing method for abnormal noise of a shock absorber valve system, characterized in that, it includes the following steps: Obtain the knuckle signal, shock absorber piston rod signal, vehicle body vibration signal, shock absorber displacement signal and shock absorber speed signal during the vehicle's driving; Perform time-frequency analysis and wavelet analysis on the knuckle signal, the shock absorber piston rod signal and the vehicle body vibration signal to obtain an abnormal noise characteristic signal; and Identify the current stroke and current speed of the shock absorber according to the shock absorber displacement signal and the shock absorber speed signal, and determine the abnormal noise test result of the shock absorber valve system according to the current stroke, the current speed and the abnormal noise characteristic signal; Generate an optimization strategy for the shock absorber valve system according to the abnormal noise test result of the shock absorber valve system; Extract the first position corresponding to the shock absorber piston valve at the current speed and the second position corresponding to the shock absorber bottom valve at the current speed from the optimization strategy; Adjust the position of the shock absorber piston valve to the first position, and / or adjust the position of the shock absorber bottom valve to the second position.

2. The method according to claim 1, characterized in that, Before obtaining the knuckle signal, the shock absorber piston rod signal, the vehicle body vibration signal, the shock absorber displacement signal and the shock absorber speed signal during the vehicle's driving, it further includes: Control the vehicle to drive on a road surface with abnormal noise characteristics at a preset vehicle speed.

3. The method according to claim 1, characterized in that, The current stroke of the shock absorber is the compression stroke or the rebound stroke of the shock absorber.

4. A testing device for abnormal noise of a shock absorber valve system, characterized in that, it includes: An acquisition module for obtaining the knuckle signal, shock absorber piston rod signal, vehicle body vibration signal, shock absorber displacement signal and shock absorber speed signal during the vehicle's driving; A processing module for performing time-frequency analysis and wavelet analysis on the knuckle signal, the shock absorber piston rod signal and the vehicle body vibration signal to obtain an abnormal noise characteristic signal; and A testing module for identifying the current stroke and current speed of the shock absorber according to the shock absorber displacement signal and the shock absorber speed signal, and determining the abnormal noise test result of the shock absorber valve system according to the current stroke, the current speed and the abnormal noise characteristic signal; Generate an optimization strategy for the shock absorber valve system according to the abnormal noise test result of the shock absorber valve system; Extract the first position corresponding to the shock absorber piston valve at the current speed and the second position corresponding to the shock absorber bottom valve at the current speed from the optimization strategy; Adjust the position of the shock absorber piston valve to the first position, and / or adjust the position of the shock absorber bottom valve to the second position.

5. The device according to claim 4, characterized in that, Before obtaining the knuckle signal, the shock absorber piston rod signal, the vehicle body vibration signal, the shock absorber displacement signal and the shock absorber speed signal during the vehicle's driving, it further includes: Control the vehicle to drive on a road surface with abnormal noise characteristics at a preset vehicle speed.

6. The device according to claim 5, characterized in that, The current stroke of the shock absorber is the compression stroke or the rebound stroke of the shock absorber.

7. An electronic device, characterized in that, comprising: a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the method for testing abnormal noise of the shock absorber valve train according to any one of claims 1-3.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, the program is executed by a processor for implementing the method for testing abnormal noise of the shock absorber valve train according to any one of claims 1-3.

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