Vibration testing methods, devices, electronic equipment, and storage media for brake pedals

Abstract

This application relates to the field of vehicle technology, and in particular to a method, apparatus, electronic device, and storage medium for testing the vibration of a brake pedal. The method includes: determining the excitation source and at least one travel angle of the brake pedal to be tested; determining at least one excitation position based on the excitation source; testing a target vehicle; acquiring vibration signals at each excitation position; and determining an excitation signal for each excitation position based on the vibration signals. At each travel angle, 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 based on the response signal. This solves the problem that related technologies struggle to simulate the vibration of a brake pedal during actual operation, accurately describing the vibration characteristics of a car brake pedal under different operating conditions, and providing a scientific basis for brake pedal optimization.

Description

Technical Field

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

[0002] Braking is one of the most frequent actions that occur during vehicle operation. Brake pedal vibration refers to the vibration that can be clearly felt by the driver's foot during braking, which affects the driving experience and is the most significant NVH problem during vehicle braking.

[0003] As a braking actuator, the brake pedal comes into direct contact with the driver's foot, and 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] This application provides a vibration testing method, device, electronic device, and storage medium for brake pedals to solve the problem that related technologies are unable to simulate the vibration of brake pedals during actual operation. It can accurately describe the vibration characteristics of automotive brake pedals under different operating conditions and provide a scientific basis for brake pedal optimization.

[0005] The first aspect of this application provides a method for testing the vibration of a brake pedal, comprising the following steps:

[0006] Determine the excitation source and at least one travel opening of the brake pedal to be tested;

[0007] At least one excitation position is determined based on 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 based on the vibration signal of each excitation position.

[0008] At each stroke opening, the response signal of the brake pedal under test is acquired according to the excitation position corresponding to the excitation signal, so as to generate vibration test results based on the response signal.

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

[0010] The excitation signal is determined based on the frequency sweep signal input by the 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 location based on the excitation source includes:

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

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

[0015] A second aspect of this application provides a vibration testing device for a brake pedal, comprising:

[0016] The determination module is used to determine the excitation source and at least one travel opening of the brake pedal under test;

[0017] The testing module is used to determine at least one excitation position based on the excitation source, test the target vehicle, acquire the vibration signal at each excitation position, and determine the excitation signal at each excitation position based on the vibration signal at each excitation position.

[0018] The generation module is used to acquire the response signal of the brake pedal under test at each stroke opening according to the excitation position corresponding to the excitation signal, so as to generate vibration test results based on the response signal.

[0019] Optionally, in some embodiments, before stimulating the corresponding stimulation position according to the stimulation signal, the test module further includes:

[0020] The determining unit is used to determine the excitation signal based on the frequency sweep signal input by the 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 location based on the excitation source includes:

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

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

[0025] A third aspect of this application provides an electronic device, including: 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 brake pedal vibration testing method as described in the above embodiments.

[0026] A fourth aspect of this 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 a brake pedal as described in the above embodiments.

[0027] Therefore, by determining the excitation source and at least one travel opening of the brake pedal under test; determining at least one excitation position based on the excitation source; testing the target vehicle; acquiring vibration signals at each excitation position; and determining the excitation signal for each excitation position based on the vibration signals; at each travel opening, stimulating the corresponding excitation position according to the excitation signal; and acquiring the response signal of the brake pedal under test, thereby generating vibration test results based on the response signal. This solves the problem that related technologies struggle to simulate the vibration of the brake pedal during actual operation, accurately describing the vibration characteristics of the automotive brake pedal under different operating conditions, and providing a scientific basis for brake pedal optimization.

[0028] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

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

[0030] Figure 1 This is a flowchart of a vibration testing method for a brake pedal according to an embodiment of this application;

[0031] Figure 2 This is a schematic diagram illustrating the principle of a vibration testing method for a brake pedal according to an embodiment of this application.

[0032] Figure 3 This is a schematic diagram of the test results under the excitation signal determined according to the actual vehicle operating conditions provided in one embodiment of this application;

[0033] Figure 4 This is a schematic diagram of the test results under an excitation signal determined by a frequency sweep signal with a preset unit force according to an embodiment of this application;

[0034] Figure 5 This is a block diagram of a vibration testing device for a brake pedal according to an embodiment of this application;

[0035] Figure 6 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application. Detailed Implementation

[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein 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 intended to explain this application, and should not be construed as limiting this application.

[0037] The vibration testing method, apparatus, electronic device, and storage medium for a brake pedal according to embodiments of this application are described below with reference to the accompanying drawings. Addressing the problem mentioned in the background art that it is difficult to simulate the vibration of a brake pedal during actual operation, this application provides a vibration testing method for a brake pedal. In this method, an excitation source and at least one travel opening of the brake pedal to be tested are determined; at least one excitation position is determined based on the excitation source; a target vehicle is tested, and vibration signals at each excitation position are acquired; an excitation signal for each excitation position is determined based on the vibration signals at each excitation position; at each travel 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 based on the response signal. This solves the problem that it is difficult for related technologies to simulate the vibration of a brake pedal during actual operation, accurately describes the vibration characteristics of a car brake pedal under different operating conditions, and provides a scientific basis for brake pedal optimization.

[0038] Specifically, Figure 1 This is a schematic flowchart of a vibration testing method for a brake pedal provided in an embodiment of this application.

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

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

[0041] The excitation sources include at least one of the following: powertrain operation excitation, road surface excitation, and braking force excitation.

[0042] It should be noted that, based on the mechanism of brake pedal vibration, the excitation sources are mainly divided into powertrain excitation, road surface excitation, and braking torque excitation. The travel opening of the brake pedal to be tested can be preset by relevant personnel. For example, based on the whole vehicle test, according to the usual working conditions in which brake pedal vibration occurs, the brake pedal travel can be set to 1 / 2 and 1 / 4 respectively, or the travel opening can be customized according to the test requirements.

[0043] In step S102, at least one excitation position is determined based on 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 based on the vibration signal of each excitation position.

[0044] Optionally, in some embodiments, determining at least one excitation location based on the excitation source includes: when the excitation source is a powertrain operation excitation, the excitation location is the powertrain operation excitation; when the excitation source is a road surface excitation and / or braking force excitation, the excitation location is the wheel center and the shock absorber assembly.

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

[0046] In other words, when the excitation source is the powertrain excitation and the transmission component is the powertrain mount, the embodiment of this application arranges a three-dimensional acceleration sensor at the mounting point on the side of the powertrain mount of the vehicle under test, and obtains the vibration signal of the powertrain suspension under actual vehicle operating conditions, and determines the excitation signal of the powertrain suspension based on the vibration signal of the powertrain suspension.

[0047] When the excitation source is road surface excitation and braking force excitation, the vibration signal transmission path mainly passes through the wheel hub, through the suspension, to the vehicle body, and then to the brake pedal. Therefore, the transmission path is defined as two levels: the first level is the wheel hub, and the second level is the suspension-vehicle contact point (i.e., the shock absorber mounting point). Three-dimensional acceleration sensors are arranged at the wheel hub and the shock absorber mounting point on the vehicle under test. It should be noted that the vibration measurement point of the wheel hub is recommended to be located in the middle of the steering knuckle, which is conducive to the arrangement of the exciter. Under the actual vehicle operating conditions, the vibration signals of the wheel hub and the shock absorber are obtained so as to determine the corresponding excitation signal based on the vibration signals of the wheel hub and the shock absorber.

[0048] In actual implementation, this application embodiment obtains the vibration signal of the excitation source by testing the target vehicle, and determines the excitation signal based on the vibration signal. Specifically, three-dimensional acceleration sensors are arranged at the mounting points of the powertrain on the vehicle body side, the wheel core (it is recommended that the vibration measuring point of the wheel core be located in the middle of the steering knuckle, which is conducive to the arrangement of the exciter), and the shock absorber at the mounting points of the vehicle body to obtain the vibration signal under actual working conditions.

[0049] The actual vehicle operating condition is defined as follows: after the vehicle reaches a speed of 120 kPH, the brake pedal is pressed, and the vehicle speed decreases to 50 kPH 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 the vibration data acquisition table under the actual vehicle operating condition. The actual vehicle operating condition is defined as follows: after the vehicle reaches a speed of 120 kPH, the brake pedal is pressed, and the vehicle speed decreases to 50 kPH 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 mounting point in the X, Y, and Z directions based on the rotational speed are recorded, the amplitude of the vibration peak and the corresponding rotational speed or rotational 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 response signal of the brake pedal to be tested is collected according to the excitation position corresponding to the excitation signal, so as to generate vibration test results based on the response signal.

[0053] Specifically, in this embodiment of the vehicle positioning, weight is applied to the pedal (foot pedal position) to make the pedal travel reach the travel opening. The weight is applied by adding an extra mass, and the added mass must be rigidly connected to the pedal. Static excitation is used instead of dynamic excitation, and a vibrator 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 actual working conditions for excitation data acquisition, as shown in Table 2. In actual execution, 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] In this embodiment, the response point is the middle of the driver's foot at the brake pedal body. Sensitivity is achieved using a frequency response function as the data type. The excitation is defined as the force of the vibrator at each input point, and the response point is defined as the acceleration signal on the pedal. Coherence is also introduced to effectively avoid external interference. For the sensitivity signal acquired using actual vibration as input, the main focus is on identifying the response amplitude and the frequency corresponding to the vibration peak, for practical problem-solving.

[0058] Therefore, during the testing process, the exciter was used to excite each measuring point according to the vibration amplitude curve measured under actual working conditions. This means that the magnitude and frequency variation of the force applied by the exciter are completely consistent with the excitation experienced by that point during actual vehicle driving. The data collected in this way can realistically simulate the vibration excitation experienced by the brake pedal in actual vehicle use, thereby accurately evaluating the vibration response and sensitivity of the brake pedal under actual working conditions. This is of great significance for analyzing and solving the brake pedal vibration problem that occurs in actual driving, and can help engineers understand the vibration characteristics of the brake pedal in real-world usage scenarios, providing a basis for optimized design.

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

[0060] Specifically, as shown in Table 2, in addition to determining the excitation signal based on the actual vehicle operating conditions, this embodiment of the application can also determine the excitation signal based on a preset unit force input sweep frequency signal. The preset unit force input sweep frequency signal is a standardized test signal, which is not generated based on the actual vehicle operating conditions, but is an excitation signal set by the tester according to the test requirements.

[0061] In actual operation, the exciter excites the excitation position according to a preset unit force input frequency sweep signal, 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, and the response signal of the brake pedal is observed and recorded. For the unit force frequency sweep signal as the input sensitivity signal, the main focus is on the response amplitude, which is used to form a target value based on a large amount of statistical data.

[0062] It should be noted that the frequency response curve obtained by exciting the frequency sweep signal with a preset unit force input identifies the natural frequency of each measuring point. It is recommended that the natural frequencies of each path measuring point be spaced 3Hz apart, and the natural frequencies of the path and the pedal assembly be spaced 5Hz apart, to ensure frequency avoidance between paths and between the path and the response, and to avoid resonance amplification caused by modal coupling.

[0063] Therefore, data collected under a sweep frequency signal excitation with a preset unit force input is primarily used to identify the natural frequency and frequency response characteristics of the brake pedal. By analyzing the pedal's response amplitude at different frequencies, the resonant and non-resonant frequency regions 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 developing vibration control strategies. Furthermore, by statistically analyzing a large amount of data under a unit force sweep frequency signal excitation, target values ​​can be generated to evaluate whether the brake pedal vibration sensitivity meets design requirements.

[0064] In summary, the embodiments of this application determine the excitation signal through actual vehicle operating conditions to simulate and analyze the vibration of the brake pedal under actual driving conditions, directly addressing practical problems for testing and analysis; the frequency sweep signal with preset unit force input is used for basic research and performance evaluation; and the standardized excitation signal provides a comprehensive understanding of the vibration characteristics of the brake pedal, providing theoretical support for design and optimization.

[0065] The vibration testing method for brake pedals proposed in this application involves determining the excitation source and at least one travel opening of the brake pedal to be tested, and determining at least one excitation position based on the excitation source. The target vehicle is then tested, and vibration signals are acquired at each excitation position. An excitation signal for each excitation position is determined based on the vibration signal, and at each travel opening, the corresponding excitation position is excited according to the excitation signal. The response signal of the brake pedal to be tested is then collected, and vibration test results are generated based on the response signal. This solves the problem that related technologies struggle to simulate the vibration of brake pedals during actual operation, accurately describing the vibration characteristics of automotive brake pedals under different operating conditions, and providing a scientific basis for brake pedal optimization.

[0066] Next, the vibration testing device for a brake pedal according to an embodiment of this application is described with reference to the accompanying drawings.

[0067] Figure 5 This is a block diagram of a brake pedal vibration testing device according to an embodiment of this application.

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

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

[0070] The test module 200 is used to determine at least one excitation position based on the excitation source, test the target vehicle, acquire the vibration signal at each excitation position, and determine the excitation signal at each excitation position based on the vibration signal at each excitation position.

[0071] The generation module 300 is used to collect the response signal of the brake pedal under test at each stroke opening according to the excitation position corresponding to the excitation signal, so as to generate vibration test results based on the response signal.

[0072] Optionally, in some embodiments, before stimulating the corresponding stimulus position according to the stimulus signal, the test module 200 further includes a determination unit.

[0073] The determining unit is used to determine the excitation signal based on the frequency sweep 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, determining at least one excitation location based on the excitation source includes: when the excitation source is a powertrain operation excitation, the excitation location is the powertrain operation excitation; when the excitation source is a road surface excitation and / or braking force excitation, the excitation location is the wheel center and the shock absorber assembly.

[0076] It should be noted that the explanation of the aforementioned embodiment of the vibration test method for the brake pedal also applies to the vibration test device for the brake pedal in this embodiment, and will not be repeated here.

[0077] The brake pedal vibration testing device proposed in this application determines the excitation source and at least one travel opening of the brake pedal to be tested, and determines at least one excitation position based on the excitation source. The device then tests the target vehicle, acquires vibration signals at each excitation position, determines the excitation signal for each excitation position based on the vibration signals, and, at each travel opening, excites the corresponding excitation position according to the excitation signal, collects the response signal of the brake pedal to be tested, and generates vibration test results based on the response signals. This solves the problem that related technologies struggle to simulate the vibration of the brake pedal during actual operation, accurately describes the vibration characteristics of the automotive brake pedal under different operating conditions, and provides a scientific basis for brake pedal optimization.

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

[0079] The memory 601, the processor 602, and the computer program stored on the memory 601 and capable of running on the processor 602.

[0080] When the processor 602 executes the program, it implements the vibration testing method for the brake pedal provided in the above embodiments.

[0081] Furthermore, electronic devices also include:

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

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

[0084] The memory 601 may include high-speed RAM (Random Access Memory) memory, and may also include non-volatile memory, such as at least one disk storage.

[0085] If the memory 601, processor 602, and communication interface 603 are implemented independently, then the communication interface 603, memory 601, and processor 602 can be interconnected via a bus to complete communication between them. 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 address bus, data bus, control bus, etc. For ease of representation, Figure 6 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

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

[0087] The processor 602 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of this application.

[0088] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described method for testing the vibration of a brake pedal.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

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

[0091] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0092] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0093] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0094] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A vibration testing method for a brake pedal, characterized in that, Includes the following steps: Determine the excitation source and at least one travel opening of the brake pedal to be tested; At least one excitation position is determined based on 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 based on the vibration signal of each excitation position. At each stroke opening, the response signal of the brake pedal under test is acquired according to the excitation position corresponding to the excitation signal, so as to generate vibration test results based on the response signal.

2. The method according to claim 1, characterized in that, Before stimulating the corresponding stimulation position according to the stimulation signal, the process further includes: The excitation signal is determined based on the frequency sweep signal input by the preset unit force.

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

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

5. A vibration testing device for a brake pedal, characterized in that, include: The determination module is used to determine the excitation source and at least one travel opening of the brake pedal under test; The testing module is used to determine at least one excitation position based on the excitation source, test the target vehicle, acquire the vibration signal at each excitation position, and determine the excitation signal at each excitation position based on the vibration signal at each excitation position. The generation module is used to acquire the response signal of the brake pedal under test at each stroke opening according to the excitation position corresponding to the excitation signal, so as to generate vibration test results based on the response signal.

6. The apparatus according to claim 5, characterized in that, Before stimulating the corresponding stimulation position according to the stimulation signal, the test module further includes: The determining unit is used to determine the excitation signal based on the frequency sweep signal input by the preset unit force.

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

8. The apparatus according to claim 7, characterized in that, Determining at least one excitation location based on the excitation source includes: When the excitation source is a powertrain operation excitation, the excitation location is a powertrain operation excitation; When the excitation source is the road surface excitation and / or the braking force excitation, the excitation location is the wheel center and the shock absorber assembly.

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

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

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