Vibration test method and device of brake pedal, electronic equipment and storage medium

Abstract

The invention relates to the technical field of vehicles, in particular to a vibration testing method and device for a brake pedal, electronic equipment and a storage medium, and the method comprises the steps: determining an excitation source and at least one stroke opening degree of a to-be-tested brake pedal; determining at least one excitation position according to the excitation source, testing the target vehicle, obtaining a vibration signal of each excitation position, and determining an excitation signal of each excitation position according to the vibration signal of each excitation position; under each stroke opening degree, the corresponding excitation position is excited according to the excitation signal, a response signal of the brake pedal to be tested is collected, and a vibration test result is generated according to the response signal. Therefore, the problem that the vibration condition of the brake pedal in the actual operation process is difficult to simulate in the prior art is solved, the vibration characteristics of the automobile brake pedal under different working conditions can be accurately described, and a scientific basis is provided for optimization of the brake pedal.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vibration testing method, device, electronic equipment and storage medium for a brake pedal. Background Art

[0002] Braking is one of the most frequent actions during vehicle driving. Brake pedal jitter refers to the vibration that can be clearly felt by the human foot during the braking process, which affects the driving experience and is the most important NVH problem during vehicle braking.

[0003] The brake pedal is a brake actuator that directly contacts the driver's feet. The vibration it transmits directly affects the comfort of the braking process. It is the most critical component for evaluating braking. Related technologies construct vehicle braking quality evaluation models through simulation models. However, it is difficult to simulate the vibration of the brake pedal during actual operation through simulation, and it is difficult to evaluate the vibration characteristics of the brake pedal under actual working conditions. Summary of the invention

[0004] The present application provides a brake pedal vibration test method, device, electronic device and storage medium to solve the problem that related technologies are difficult to simulate the vibration of the brake pedal during actual operation. It can accurately describe the vibration characteristics of the automobile brake pedal under different working conditions and provide a scientific basis for the optimization of the brake pedal.

[0005] A first aspect of the present application provides a brake pedal vibration test method, comprising the following steps:

[0006] determining an excitation source and at least one travel opening of a brake pedal to be tested;

[0007] Determine at least one excitation position according to the excitation source, test the target vehicle, obtain a vibration signal at each excitation position, and determine an excitation signal at each excitation position according to the vibration signal at each excitation position;

[0008] At each stroke opening, the corresponding excitation position is excited according to the excitation signal, and a response signal of the brake pedal to be tested is collected to generate a vibration test result according to the response signal.

[0009] Optionally, in some embodiments, before exciting the corresponding excitation position according to the excitation signal, the method further includes:

[0010] The excitation signal is determined according to a swept frequency signal inputted with a preset unit force.

[0011] Optionally, in some embodiments, the excitation source includes: at least one of powertrain operation excitation, road surface excitation and braking force excitation.

[0012] Optionally, in some embodiments, determining at least one excitation position according to the excitation source comprises:

[0013] When the excitation source is a powertrain operation excitation, the excitation position is a powertrain operation excitation;

[0014] When the excitation source is the road surface excitation and / or the braking force excitation, the excitation position is the wheel center and the shock absorber assembly.

[0015] A second aspect of the present application provides a brake pedal vibration test device, comprising:

[0016] A determination module, used to determine an excitation source and at least one stroke opening of a brake pedal to be tested;

[0017] A testing module, used to determine at least one excitation position according to the excitation source, test the target vehicle, obtain the vibration signal of each excitation position, and determine the excitation signal of each excitation position according to the vibration signal of each excitation position;

[0018] A generating module is used to, at each stroke opening, stimulate the corresponding excitation position according to the excitation signal, collect the response signal of the brake pedal to be tested, and generate a vibration test result according to the response signal.

[0019] Optionally, in some embodiments, before exciting the corresponding excitation position according to the excitation signal, the testing module further includes:

[0020] The determination unit is used to determine the excitation signal according to the swept frequency signal input by a preset unit force.

[0021] Optionally, in some embodiments, the excitation source includes: at least one of powertrain operation excitation, road surface excitation and braking force excitation.

[0022] Optionally, in some embodiments, determining at least one excitation position according to the excitation source comprises:

[0023] When the excitation source is a powertrain operation excitation, the excitation position is a powertrain operation excitation;

[0024] When the excitation source is the road surface excitation and / or the braking force excitation, the excitation position is the wheel center and the shock absorber assembly.

[0025] A third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vibration test method for the brake pedal as described in the above embodiment.

[0026] A fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the vibration testing method for the brake pedal as described in the above embodiment.

[0027] Thus, by determining the excitation source and at least one stroke opening of the brake pedal to be tested; determining at least one excitation position according to the excitation source, testing the target vehicle, obtaining the vibration signal of each excitation position, and determining the excitation signal of each excitation position according to the vibration signal of each excitation position; at each stroke opening, the corresponding excitation position is excited according to the excitation signal, and the response signal of the brake pedal to be tested is collected to generate the vibration test result according to the response signal. Thus, the problem that the related technology is difficult to simulate the vibration of the brake pedal in the actual operation process is solved, and the vibration characteristics of the automobile brake pedal under different working conditions can be accurately described, providing a scientific basis for the optimization of the brake pedal.

[0028] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0030] Figure 1 A flowchart of a brake pedal vibration test method provided according to an embodiment of the present application;

[0031] Figure 2 A schematic diagram of the principle of a vibration test method for a brake pedal provided according to an embodiment of the present application;

[0032] Figure 3 A schematic diagram of test results under an excitation signal determined according to an actual vehicle operating condition provided in one embodiment of the present application;

[0033] Figure 4 A schematic diagram of test results under an excitation signal determined by a swept frequency signal of a preset unit force provided in accordance with an embodiment of the present application;

[0034] Figure 5 It is a block diagram of a vibration testing device for a brake pedal provided according to an embodiment of the present application;

[0035] Figure 6 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] The vibration test method, device, electronic device and storage medium of the brake pedal of the embodiment of the present application are described below with reference to the accompanying drawings. In view of the problem that the related art mentioned in the above background technology is difficult to simulate the vibration of the brake pedal during actual operation, the present application provides a vibration test method for the brake pedal, in which the excitation source and at least one stroke opening of the brake pedal to be tested are determined; at least one excitation position is determined according to the excitation source, the target vehicle is tested, the vibration signal of each excitation position is obtained, and the excitation signal of each excitation position is determined according to the vibration signal of each excitation position; at each stroke opening, the corresponding excitation position is excited according to the excitation signal, and the response signal of the brake pedal to be tested is collected to generate a vibration test result according to the response signal. As a result, the problem that the related art is difficult to simulate the vibration of the brake pedal during actual operation is solved, and the vibration characteristics of the automobile brake pedal under different working conditions can be accurately described, providing a scientific basis for the optimization of the brake pedal.

[0038] Specifically, Figure 1 A schematic flow chart of a brake pedal vibration testing method provided in an embodiment of the present application.

[0039] like Figure 1 As shown, the vibration test method of the brake pedal includes the following steps:

[0040] In step S101 , an excitation source and at least one stroke opening of a brake pedal to be tested are determined.

[0041] The excitation source includes at least one of powertrain operation excitation, road surface excitation and braking force excitation.

[0042] It should be noted that according to the mechanism of brake pedal vibration problems, the excitation sources are mainly divided into powertrain excitation, road excitation and braking torque excitation; the stroke opening of the brake pedal to be tested can be pre-set by relevant personnel. For example, based on the test of the whole vehicle, the brake pedal stroke can be positioned as 1 / 2 and 1 / 4 respectively according to the normal working conditions where the brake pedal vibration problem occurs, or the stroke opening can be customized according to the test requirements.

[0043] In step S102, at least one excitation position is determined according to an excitation source, a target vehicle is tested, a vibration signal of each excitation position is acquired, and an excitation signal of each excitation position is determined according to the vibration signal of each excitation position.

[0044] Optionally, in some embodiments, at least one excitation position is determined according to the excitation source, including: when the excitation source is powertrain operation excitation, the excitation position is the powertrain operation excitation; when the excitation source is road surface excitation and / or braking force excitation, the excitation position is the wheel center and shock absorber assembly.

[0045] It is understandable that if Figure 2 As shown in the figure, the powertrain excitation is mainly input to the vehicle body through the powertrain suspension point, causing the vehicle body to vibrate. Since the brake pedal is rigidly connected to the vehicle body firewall, this part of the vibration is transmitted to the brake pedal, so the path is defined as the installation point of the powertrain suspension on the vehicle body, and the excitation signal of the input point is defined as the actual vibration signal of the actual vehicle suspension point, which is consistent with the actual situation; the road surface excitation and braking torque excitation are mainly transmitted to the vehicle body through the wheel core via the suspension and then to the pedal. Therefore, the path is defined as two levels: the wheel core and the attachment point between the suspension and the vehicle body (shock absorber installation point), and the excitation signals of the excitation source are the measured vibration signals at the corresponding positions.

[0046] That is to say, when the excitation source is the powertrain excitation, the transmission component is the powertrain suspension. The embodiment of the present application arranges a three-axis acceleration sensor at the mounting point on the body side of the powertrain suspension of the vehicle to be tested, and obtains the vibration signal of the powertrain suspension under the actual vehicle operating condition, and determines the excitation signal of the powertrain suspension based on the vibration signal of the powertrain suspension.

[0047] When the excitation sources are road excitation and braking force excitation, the vibration signal transmission path mainly passes through the wheel core via the suspension to the vehicle body, and then to the brake pedal. Therefore, the transmission path is defined as two levels: one level is the wheel core, and the other level is the attachment point between the suspension and the vehicle body (i.e., the shock absorber installation point). A three-dimensional acceleration sensor is arranged at the vehicle body installation point where the wheel core and shock absorber of the vehicle to be tested are installed. It should be noted that the vibration measurement point of the wheel core measurement point is recommended to be in the middle of the steering knuckle, which is conducive to the arrangement of the exciter, and under the actual vehicle operating conditions, the vibration signal of the wheel center and the vibration signal of the shock absorber are obtained, so as to determine the corresponding excitation signal according to the vibration signal of the wheel center and the vibration signal of the shock absorber.

[0048] In the actual implementation process, the embodiment of the present application tests the target vehicle to obtain the vibration signal of the excitation source to determine the excitation signal based on the vibration signal. Specifically, three-dimensional acceleration sensors are arranged at the installation point of the powertrain suspension body side, the wheel core (the vibration measurement point of the wheel core measurement point is recommended to be in the middle of the steering knuckle, which is conducive to the arrangement of the exciter) and the shock absorber on the body installation point to obtain the vibration signal of the actual working condition.

[0049] Among them, the actual vehicle operating condition is defined as after the vehicle reaches a speed of 120KPH, the brake pedal is pressed, and the speed is reduced to 50KPH within 8-10 seconds. The test is repeated until three sets of data with good consistency are obtained, as shown in Table 1. Table 1 is a vibration data collection table under the actual vehicle operating condition. The actual vehicle operating condition is defined as after the vehicle reaches a speed of 120KPH, the brake pedal is pressed, and the speed is reduced to 50KPH within 8-10 seconds. The test is repeated until three sets of data with good consistency are obtained. For example, through multiple tests, the vibration acceleration curves of the powertrain suspension mounting points based on the speed in the X, Y, and Z directions are recorded, the amplitude of the vibration peak and the corresponding speed or speed range are identified, and then the frequency or frequency range is determined.

[0050] Table 1

[0051]

[0052] In step S103, at each stroke opening, the corresponding excitation position is excited according to the excitation signal, and the response signal of the brake pedal to be tested is collected to generate a vibration test result according to the response signal.

[0053] Specifically, the vehicle is stationary, and the embodiment of the present application applies weight to the pedal (pedal position) so that the pedal stroke reaches the stroke opening. The weight is applied by adding additional mass, and the added mass needs to be rigidly connected to the pedal. Static excitation is used instead of dynamic excitation, and an exciter is used to excite the excitation position. The excitation signal is set to the vibration amplitude curve based on the frequency domain at each point under the actual working condition for excitation data collection, as shown in Table 2. In the actual execution process, the data acquisition parameters are set as follows: frequency 20-100Hz, resolution 1Hz, rectangular windows are used for both input and output, and all sensors are calibrated according to conventional requirements.

[0054] Table 2

[0055]

[0056]

[0057] The response point of the embodiment of the present application is the middle of the driver's foot at the brake pedal body. The sensitivity uses the frequency response function as the acquisition data type. The excitation is defined as the force of the exciter at each input point, and the response point is defined as the acceleration signal on the pedal. At the same time, coherence is introduced to effectively avoid external interference. For the sensitivity signal obtained by taking the actual vibration as input, the response amplitude and the frequency corresponding to the vibration peak are mainly identified for practical problem solving.

[0058] Therefore, during the test, the exciter is used to excite each measuring point according to the vibration amplitude curve measured under actual working conditions, which means that the magnitude of the force applied by the exciter and the frequency variation law are exactly the same as the excitation received by the vehicle at that point during actual driving. The data collected in this way can truly simulate the vibration excitation received by the brake pedal of the vehicle in actual use, so as to accurately evaluate the vibration response and sensitivity of the brake pedal under actual working conditions. This is of great significance for analyzing and solving the problem of brake pedal jitter in actual driving, and can help engineers understand the vibration characteristics of the brake pedal in real usage scenarios, providing a basis for optimized design.

[0059] Optionally, in some embodiments, before exciting the corresponding excitation position according to the excitation signal, the method further includes: determining the excitation signal according to a sweep frequency signal inputted with a preset unit force.

[0060] Specifically, in combination with what is shown in Table 2, in addition to determining the excitation signal of the excitation position through the actual vehicle operating conditions, the embodiment of the present application can also determine the excitation signal based on the swept frequency signal of the preset unit force input, wherein the swept frequency signal of the preset unit force input is a standardized test signal, which is not generated based on the actual operating conditions of the vehicle, but is an excitation signal set by the tester according to the test requirements.

[0061] In the actual implementation process, the exciter excites the excitation position according to the swept frequency signal of the preset unit force input, starting from the lowest frequency and gradually increasing the frequency until the highest frequency is reached. At each frequency point, the exciter applies a constant unit force, observes and records the response signal of the brake pedal, and mainly focuses on the response amplitude for the sensitivity signal obtained by the unit force swept frequency signal as input, which is used to form a target value based on a large amount of data statistics.

[0062] It should be noted that the frequency response curve obtained by the swept frequency signal excitation of the preset unit force input is used to identify the natural frequency of each measuring point. It is recommended that the natural frequencies of each path measuring point be separated by 3Hz, and the natural frequencies of the path and the pedal assembly be separated by 5Hz to ensure frequency avoidance between paths and between paths and responses, and to avoid resonance amplification caused by modal coupling.

[0063] Therefore, the data collected under the excitation of the swept frequency signal with a preset unit force input is mainly used to identify the natural frequency and frequency response characteristics of the brake pedal. By analyzing the response amplitude of the pedal at different frequencies, the resonant frequency and non-resonant frequency area of ​​the pedal can be determined. This information is crucial for establishing a vibration model of the brake pedal, predicting its vibration behavior under different excitation conditions, and formulating vibration control strategies. In addition, by statistically analyzing a large amount of data under the excitation of the swept frequency signal with a unit force, a target value can also be formed to evaluate whether the vibration sensitivity of the brake pedal meets the design requirements.

[0064] In summary, the embodiment of the present application determines the excitation signal through the actual vehicle operating conditions to simulate and analyze the vibration of the brake pedal under actual driving conditions, and directly tests and analyzes practical problems; the swept frequency signal with preset unit force input is used for basic research and performance evaluation, and the vibration characteristics of the brake pedal are fully understood through standardized excitation signals, providing theoretical support for design and optimization.

[0065] According to the vibration test method of the brake pedal proposed in the embodiment of the present application, by determining the excitation source and at least one stroke opening of the brake pedal to be tested, and determining at least one excitation position according to the excitation source, the target vehicle is tested, the vibration signal of each excitation position is obtained, and the excitation signal of each excitation position is determined according to the vibration signal of each excitation position, and at each stroke opening, the corresponding excitation position is excited according to the excitation signal, and the response signal of the brake pedal to be tested is collected to generate a vibration test result according to the response signal. Thus, the problem that the related technology is difficult to simulate the vibration of the brake pedal during actual operation is solved, and the vibration characteristics of the automobile brake pedal under different working conditions can be accurately described, providing a scientific basis for the optimization of the brake pedal.

[0066] Next, the vibration testing device for the brake pedal proposed in accordance with the embodiment of the present application will be described with reference to the accompanying drawings.

[0067] Figure 5 It is a block diagram of a vibration testing device for a brake pedal according to an embodiment of the present application.

[0068] like Figure 5 As shown, the brake pedal vibration testing device 10 includes: a determination module 100 , a testing module 200 and a generation module 300 .

[0069] The determination module 100 is used to determine an excitation source and at least one stroke opening of the brake pedal to be tested.

[0070] The test module 200 is used to determine at least one excitation position according to an excitation source, test the target vehicle, obtain a vibration signal at each excitation position, and determine an excitation signal at each excitation position according to the vibration signal at each excitation position.

[0071] The generating module 300 is used to stimulate the corresponding excitation position according to the excitation signal at each stroke opening, collect the response signal of the brake pedal to be tested, and generate the vibration test result according to the response signal.

[0072] Optionally, in some embodiments, before stimulating the corresponding excitation position according to the excitation signal, the testing module 200 further includes: a determining unit.

[0073] Wherein, the determination unit is used to determine the excitation signal according to the sweep frequency signal input by the preset unit force.

[0074] Optionally, in some embodiments, the excitation source includes: at least one of powertrain operation excitation, road surface excitation and braking force excitation.

[0075] Optionally, in some embodiments, at least one excitation position is determined according to the excitation source, including: when the excitation source is powertrain operation excitation, the excitation position is the powertrain operation excitation; when the excitation source is road surface excitation and / or braking force excitation, the excitation position is the wheel center and shock absorber assembly.

[0076] It should be noted that the above explanation of the embodiment of the vibration testing method for the brake pedal is also applicable to the vibration testing device for the brake pedal of this embodiment, and will not be repeated here.

[0077] According to the vibration test device for the brake pedal proposed in the embodiment of the present application, by determining the excitation source and at least one stroke opening of the brake pedal to be tested, and determining at least one excitation position according to the excitation source, the target vehicle is tested, the vibration signal of each excitation position is obtained, and the excitation signal of each excitation position is determined according to the vibration signal of each excitation position, and at each stroke opening, the corresponding excitation position is excited according to the excitation signal, and the response signal of the brake pedal to be tested is collected to generate a vibration test result according to the response signal. Thus, the problem that the relevant technology is difficult to simulate the vibration of the brake pedal during actual operation is solved, and the vibration characteristics of the automobile brake pedal under different working conditions can be accurately described, providing a scientific basis for the optimization of the brake pedal.

[0078] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0079] A memory 601 , a processor 602 , and a computer program stored in the memory 601 and executable on the processor 602 .

[0080] When the processor 602 executes the program, the vibration test method of the brake pedal provided in the above embodiment is implemented.

[0081] Furthermore, the electronic device further comprises:

[0082] The communication interface 603 is used for communication between the memory 601 and the processor 602 .

[0083] The memory 601 is used to store computer programs that can be executed on the processor 602 .

[0084] The memory 601 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.

[0085] If the memory 601, the processor 602 and the communication interface 603 are implemented independently, the communication interface 603, the memory 601 and the processor 602 can be connected to each other through a bus and communicate with each other. The bus can 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 ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0086] Optionally, in a specific implementation, if the memory 601, the processor 602 and the communication interface 603 are integrated on a chip, the memory 601, the processor 602 and the communication interface 603 can communicate with each other through an internal interface.

[0087] The processor 602 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.

[0088] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned brake pedal vibration test method when executed by a processor.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction 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 may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0090] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0091] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0092] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, 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 by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0093] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0094] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vibration test method for a brake pedal, characterized in that: The following steps are involved: determining an excitation source and at least one travel opening of a brake pedal to be tested; Determine at least one excitation position according to the excitation source, test the target vehicle, obtain a vibration signal at each excitation position, and determine an excitation signal at each excitation position according to the vibration signal at each excitation position; At each stroke opening, the corresponding excitation position is excited according to the excitation signal, and a response signal of the brake pedal to be tested is collected to generate a vibration test result according to the response signal.

2. The method according to claim 1, characterized in that Before exciting the corresponding excitation position according to the excitation signal, the method further includes: The excitation signal is determined according to a swept frequency signal inputted with a preset unit force.

3. The method according to claim 1, characterized in that The excitation source includes: at least one of powertrain operation excitation, road surface excitation and braking force excitation.

4. The method according to claim 3, characterized in that The determining at least one excitation position according to the excitation source comprises: When the excitation source is a powertrain operation excitation, the excitation position is a powertrain operation excitation; When the excitation source is the road surface excitation and / or the braking force excitation, the excitation position is the wheel center and the shock absorber assembly.

5. A vibration test device for a brake pedal, characterized in that: include: A determination module, used to determine an excitation source and at least one stroke opening of a brake pedal to be tested; A testing module, used to determine at least one excitation position according to the excitation source, test the target vehicle, obtain the vibration signal of each excitation position, and determine the excitation signal of each excitation position according to the vibration signal of each excitation position; A generating module is used to, at each stroke opening, stimulate the corresponding excitation position according to the excitation signal, collect the response signal of the brake pedal to be tested, and generate a vibration test result according to the response signal.

6. The device according to claim 5, characterized in that Before exciting the corresponding excitation position according to the excitation signal, the test module further includes: The determination unit is used to determine the excitation signal according to the swept frequency signal input by a preset unit force.

7. The device according to claim 5, characterized in that The excitation source includes: at least one of powertrain operation excitation, road surface excitation and braking force excitation.

8. The device according to claim 7, characterized in that The determining at least one excitation position according to the excitation source comprises: When the excitation source is a powertrain operation excitation, the excitation position is a powertrain operation excitation; When the excitation source is the road surface excitation and / or the braking force excitation, the excitation position is the wheel center and the shock absorber assembly.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vibration testing method for the brake pedal as described in any one of claims 1 to 4.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the vibration testing method for a brake pedal as described in any one of claims 1 to 4.

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