Automobile suspension high frequency performance testing method, system and storage medium

Abstract

The present invention discloses a method, system and storage medium for testing high-frequency performance of automobile suspension. The method performs a bench high-frequency dynamic stiffness test on a suspension test sample installed in a preset dynamic stiffness test bench to obtain a bench high-frequency dynamic stiffness test result corresponding to the suspension test sample; performs a whole vehicle vibration test on the suspension test sample installed in a preset test vehicle to obtain a whole vehicle vibration test result corresponding to the suspension test sample; and determines a first suspension high-frequency performance test result corresponding to the suspension test sample according to the bench high-frequency dynamic stiffness test result and the whole vehicle vibration test result. The present invention can quantify the relationship between the high-frequency performance of the suspension and the NVH performance of the automobile.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile suspension high-frequency performance testing, and in particular to an automobile suspension high-frequency performance testing method, system and storage medium. Background Art

[0002] As people's living standards improve, consumers have higher requirements for the comfort of cars. However, the NVH (Noise, Vibration and Harshness) performance of cars has a great impact on the comfort of cars. Among them, the suspension plays an important role in the NVH performance of cars. However, the relationship between the high-frequency performance of the suspension and the NVH performance of cars cannot be quantified in the prior art. Summary of the invention

[0003] The embodiments of the present invention provide a method, system and storage medium for testing the high-frequency performance of an automobile suspension, so as to solve the problem that the relationship between the high-frequency performance of the suspension and the NVH performance of the automobile cannot be quantified.

[0004] A method for testing high-frequency performance of automobile suspension, comprising:

[0005] Performing a bench high-frequency dynamic stiffness test on a suspension test sample installed in a preset dynamic stiffness test bench to obtain a bench high-frequency dynamic stiffness test result corresponding to the suspension test sample;

[0006] Performing a whole vehicle vibration test on a suspension test sample installed in a preset test vehicle to obtain a whole vehicle vibration test result corresponding to the suspension test sample;

[0007] According to the test result of the bench high-frequency dynamic stiffness and the test result of the whole vehicle vibration, a first suspension high-frequency performance test result corresponding to the suspension test sample is determined.

[0008] Furthermore, the bench test of a suspension test specimen installed in a preset dynamic stiffness test bench is performed to obtain a bench test result corresponding to the suspension test specimen, including: acquiring a bench test parameter sequence; the bench test parameter sequence contains at least one bench test parameter group; the bench test parameter sequence includes a first bench test parameter group, and a dynamic stiffness test is performed on the suspension test specimen in the preset dynamic stiffness test bench according to the first bench test parameter group to obtain a first dynamic stiffness value corresponding to the first bench test parameter group; detecting whether the bench test parameter sequence includes a bench test parameter group other than the first bench test parameter group; when the bench test parameter sequence does not include a bench test parameter group other than the first bench test parameter group, generating the bench test result according to the first bench test parameter group and the first dynamic stiffness value.

[0009] Furthermore, the bench test parameter sequence also includes a second bench test parameter group; the dynamic stiffness test is performed on the suspension test specimen in the preset dynamic stiffness test bench according to the second bench test parameter group to obtain a second dynamic stiffness value corresponding to the second bench test parameter group; it is detected whether the bench test parameter sequence includes bench test parameter groups other than the first bench test parameter group and the second bench test parameter group; when the bench test parameter sequence does not include other bench test parameter groups other than the first bench test parameter group and the second bench test parameter group, the bench high-frequency dynamic stiffness test result is generated according to the first bench test parameter group, the first dynamic stiffness value, the second bench test parameter group and the second dynamic stiffness value.

[0010] Furthermore, the vibration test of the suspension test sample installed in the preset test car to determine the whole vehicle vibration test result corresponding to the suspension test sample includes: obtaining a whole vehicle test parameter sequence; the whole vehicle test parameter sequence includes at least one whole vehicle test parameter group; the whole vehicle test parameter sequence includes a first whole vehicle test parameter group, and the preset test car installed with the suspension test sample is driven under preset road conditions with the first whole vehicle test parameter group; during the driving of the preset test car, first vibration data and a first in-vehicle noise value corresponding to the first whole vehicle test parameter group are obtained, and it is detected whether the whole vehicle test parameter sequence also includes a whole vehicle test parameter group other than the first whole vehicle test parameter group; when the whole vehicle test parameter sequence does not include a whole vehicle test parameter group other than the first whole vehicle test parameter group, the whole vehicle vibration test result is generated according to the first whole vehicle test parameter group, the first vibration data and the first in-vehicle noise value.

[0011] Furthermore, the whole vehicle test parameter sequence also includes a second whole vehicle test parameter group; the preset test vehicle equipped with the suspension test specimen is driven under preset road conditions with the second whole vehicle test parameter group; during the driving of the preset test vehicle, second vibration data and second in-vehicle noise value corresponding to the second whole vehicle test parameter group are obtained, and it is detected whether the whole vehicle test parameter sequence also includes a whole vehicle test parameter group other than the first whole vehicle test parameter group and the second whole vehicle test parameter group; when the whole vehicle test parameter sequence does not include a whole vehicle test parameter group other than the first whole vehicle test parameter group and the second whole vehicle test parameter group, the whole vehicle vibration test result is generated according to the first whole vehicle test parameter group, the first vibration data, the first in-vehicle noise value, the second whole vehicle test parameter group, the second vibration data and the second in-vehicle noise value.

[0012] Furthermore, the bench high-frequency dynamic stiffness test results include multiple test dynamic stiffness groups; the vehicle vibration test results include multiple test vibration groups; the first suspension high-frequency performance test results corresponding to the suspension test specimen are determined based on the bench high-frequency dynamic stiffness test results and the vehicle vibration test results, including: determining all test dynamic stiffness groups based on the bench high-frequency dynamic stiffness test results; each of the test dynamic stiffness groups includes a first parameter and a dynamic stiffness value associated with the first parameter; the first parameters in each of the test dynamic stiffness groups are different; determining all according to the vehicle vibration test results Test vibration groups; each of the test vibration groups includes a second parameter, a vibration isolation rate associated with the second parameter, and a vehicle interior noise value; the number of the second parameters is the same as the first parameters, and each second parameter in the vehicle vibration test result corresponds one-to-one to each first parameter in the bench high-frequency dynamic stiffness test result; the corresponding first parameters and the dynamic stiffness values, vibration isolation rates, and vehicle interior noise values ​​corresponding to the second parameters are associated and recorded as a performance test parameter group corresponding to the first parameter; and the first suspension high-frequency performance test result corresponding to the suspension test specimen is determined according to each performance test parameter group.

[0013] Further, determining all test vibration groups according to the whole vehicle vibration test results includes: obtaining vibration data corresponding to each second parameter in the whole vehicle vibration test results, each vibration data including an active end vibration data and a passive end vibration data; generating a vibration isolation rate corresponding to each second parameter according to the active end vibration data and the passive end vibration data contained in each vibration data; generating a test vibration group according to the second parameters and the vibration isolation rate corresponding to the second parameters and the in-vehicle noise value.

[0014] Furthermore, after determining the first suspension high-frequency performance test result corresponding to the suspension test sample based on the bench high-frequency dynamic stiffness test result and the whole vehicle vibration test result, it also includes: acquiring suspension comparison sample structural parameters; the suspension test sample structural parameters include a first hardness parameter; the suspension comparison sample structural parameters include a second hardness parameter different from the first hardness parameter; performing a bench high-frequency dynamic stiffness test and a whole vehicle vibration test on the suspension comparison sample to obtain a second suspension high-frequency performance test result corresponding to the suspension comparison sample; determining a hardness-NVH performance comparison result based on the first hardness parameter, the second hardness parameter, the first suspension high-frequency performance test result and the second suspension high-frequency performance test result.

[0015] The present invention also provides a vehicle suspension high-frequency performance test system, comprising a controller, a preset dynamic stiffness test bench, and an on-board controller arranged in a preset test vehicle; the controller is connected to the preset dynamic stiffness test bench and the on-board controller, and the controller is used to implement the above-mentioned vehicle suspension high-frequency performance test method.

[0016] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned vehicle suspension high-frequency performance testing method is implemented.

[0017] The above-mentioned automobile suspension high-frequency performance test method, system and storage medium determine the first suspension high-frequency performance test result based on the bench high-frequency dynamic stiffness test result obtained by the bench high-frequency dynamic stiffness test and the whole vehicle vibration test result obtained by the whole vehicle vibration test. The first suspension high-frequency performance test result indicates that the lower the high-frequency dynamic stiffness of the suspension system connected to the powertrain, the smaller the in-car noise transmitted to the car by the powertrain through the suspension system. In this way, the in-car noise value of the car can be adjusted by changing the high-frequency dynamic stiffness of the suspension system, thereby improving the NVH performance of the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 is a flow chart of a method for testing high frequency performance of a vehicle suspension in one embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the test results of the high frequency performance of the first suspension in one embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the hardness-NVH performance comparison results in one embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In one embodiment, if Figure 1 As shown, a method for testing high-frequency performance of a vehicle suspension is provided, comprising the following steps:

[0024] S10: Performing a bench high-frequency dynamic stiffness test on a suspension test sample installed in a preset dynamic stiffness test bench to obtain a bench high-frequency dynamic stiffness test result corresponding to the suspension test sample.

[0025] It can be understood that the preset dynamic stiffness test bench is a device used to determine the dynamic stiffness value of the suspension test specimen at different frequencies. It should be noted that, since the bench high-frequency dynamic stiffness test is carried out in this embodiment, it is shown that the dynamic stiffness frequency range of the suspension test specimen of interest is a high-frequency region of 1000 to 2000 Hz, so the bench structure modal of the preset dynamic stiffness test bench is required to be at least greater than 2000 Hz; further, the preset dynamic stiffness test bench includes dynamic exciters, static loading devices, brackets, acceleration sensors, etc., because when performing high-frequency dynamic stiffness tests, the bracket structure modal in the preset dynamic stiffness test bench generally has multi-order modules in the frequency range of 500 to 2000 Hz, Therefore, it is necessary to cut or strengthen the bracket so as to avoid the frequency range of the bracket structure mode, that is, avoid the above-mentioned frequency range of 500 to 2000 Hz, so as to facilitate high-frequency dynamic stiffness testing; further, when performing high-frequency dynamic stiffness testing on the suspended test specimen, in addition to loading static loads, dynamic loads are also required to be loaded (dynamic loads also need to simulate at least 6 displacement states, for example, 1um, 3um, 5um, 7um, 10um, etc. can be selected), so the preset dynamic stiffness test bench includes a dynamic exciter and a static loading device.

[0026] Furthermore, the structural parameters of the suspension test specimen may include the shape, volume, hardness parameters, etc. of the suspension test specimen. Specifically, the suspension test specimen is installed in a preset dynamic stiffness test bench. It can be understood that a test specimen installation area is reserved in the preset dynamic stiffness test bench, so the suspension test specimen can be installed in the preset dynamic stiffness test bench, so as to perform a bench high-frequency dynamic stiffness test on the suspension test specimen through the preset dynamic stiffness test bench, and then obtain a bench high-frequency dynamic stiffness test result corresponding to the suspension test specimen. Among them, the bench high-frequency dynamic stiffness test results include at least one dynamic stiffness value, and one dynamic stiffness value is associated with a bench test parameter group (the bench test parameter group may include force and displacement parameters, frequency parameters, etc.), which means that in the process of conducting a bench high-frequency dynamic stiffness test on the suspension test specimen, it is necessary to continuously adjust the parameters of the preset dynamic stiffness test bench to determine the dynamic stiffness value of the suspension test specimen under different bench test parameter groups; further, the bench high-frequency dynamic stiffness test results can be obtained by associating the dynamic stiffness values ​​and the bench test parameter groups one by one in a tabular form, or by drawing a curve, such as using the horizontal axis to represent the bench test parameter group and the vertical axis to represent the dynamic stiffness value. The representation form of the bench high-frequency dynamic stiffness test results is not limited herein.

[0027] S20: performing a whole vehicle vibration test on the suspension test sample installed in a preset test vehicle to obtain a whole vehicle vibration test result corresponding to the suspension test sample.

[0028] It can be understood that the execution order of step S10 and step S20 can be executed successively or simultaneously. The preset test vehicle is any vehicle with a powertrain, and the suspension test sample can be installed in the preset test vehicle, one end of the suspension test sample is connected to the powertrain in the preset test vehicle, and the other end of the suspension test sample is connected to the body of the preset test vehicle.

[0029] Furthermore, after the suspension test specimen is installed on the preset test vehicle, the preset test vehicle can be driven according to the vehicle test parameter group (the vehicle test parameter group may include parameters such as driving speed, driving acceleration, etc.), and during the preset test vehicle, the vehicle-mounted controller set on the preset test vehicle obtains the in-vehicle noise value collected by the sound sensor set on the preset test vehicle and the vibration data collected by the vibration sensor set on the preset test vehicle, and then the in-vehicle noise value and vibration data can be directly obtained from the in-vehicle controller, and the whole vehicle vibration test result is determined according to the in-vehicle noise value, vibration data and the whole vehicle test parameter group of the preset test vehicle. Among them, the whole vehicle vibration test result includes at least one vibration data and at least one in-vehicle noise value, one vibration data is associated with one in-vehicle noise value, and the associated vibration data and in-vehicle noise value each correspond to one vehicle test parameter group.

[0030] S30: Determine a first suspension high-frequency performance test result corresponding to the suspension test sample according to the bench high-frequency dynamic stiffness test result and the vehicle vibration test result.

[0031] Specifically, it is pointed out in the above description that the bench high-frequency dynamic stiffness test results include at least one dynamic stiffness value, and one dynamic stiffness value is associated with a bench test parameter group, and the whole vehicle vibration test results include at least one vibration data and at least one in-vehicle noise value, one vibration data is associated with one in-vehicle noise value, and the associated vibration data and in-vehicle noise value both correspond to a whole vehicle test parameter group; further, the bench test parameter group includes force and displacement parameters, and the whole vehicle test parameter group also includes acceleration parameters, and there is a one-to-one correspondence between the force and displacement parameters in the bench test parameter group and the acceleration parameters in the whole vehicle test parameter group, and then the corresponding dynamic stiffness values, vibration data and in-vehicle noise values ​​can be combined into a set of comparison data to determine the first suspension high-frequency performance test result.

[0032] Furthermore, if Figure 2 As shown, S1 is the test result of the high-frequency dynamic stiffness of the bench represented by a curve, and the abscissa of the curve can be represented by force and displacement parameter values ​​(such as Figure 2 The horizontal axis of S1 is represented by S, which represents the force and displacement parameters, and the vertical axis can be represented by the dynamic stiffness value (such as Figure 2 The vertical coordinate of S1 is represented by DS representing dynamic stiffness); S2 is the vibration data of the passive end Z direction in the vibration test result of the whole vehicle represented by a curve, and the horizontal coordinate of the curve can be represented by acceleration value or speed value (such as Figure 2 The horizontal axis of S2 is represented by rpm, and the vertical axis can be represented by amplitude (such as Figure 2 The vertical axis of S2 is represented by A representing the amplitude value); S3 is the in-vehicle noise value in the vehicle vibration test result represented by a curve, and the horizontal axis of the curve can be represented by an acceleration value or a speed value (such as Figure 2 The horizontal axis of S3 is represented by rpm, and the vertical axis can be represented by the noise value in the car (such as Figure 2 The vertical axis of S3 in the figure is represented by dB, which represents the noise value inside the car. Figure 2 It was found that when the dynamic stiffness value is lower, the vibration data is lower and the noise value inside the car is lower. Therefore, when improving the NVH performance of the car, the high-frequency dynamic stiffness of the suspension system installed on the car connecting the powertrain and the car body can be reduced, thereby achieving the effect of reducing the noise inside the car, thereby improving the NVH performance of the car and also improving the comfort of users.

[0033] In this embodiment, the first suspension high-frequency performance test result is determined by the test result of the high-frequency dynamic stiffness of the bench obtained by the high-frequency dynamic stiffness test of the bench and the test result of the whole vehicle vibration obtained by the whole vehicle vibration test. The first suspension high-frequency performance test result indicates that the lower the high-frequency dynamic stiffness of the suspension system connected to the powertrain, the smaller the in-car noise transmitted from the powertrain to the car through the suspension system. In this way, the in-car noise value of the car can be adjusted by changing the high-frequency dynamic stiffness of the suspension system, thereby improving the NVH performance of the car.

[0034] In one embodiment, step S10, that is, performing a bench high-frequency dynamic stiffness test on a suspension test sample installed in a preset dynamic stiffness test bench to obtain a bench high-frequency dynamic stiffness test result corresponding to the suspension test sample, includes:

[0035] A bench test parameter sequence is obtained; the bench test parameter sequence includes at least one bench test parameter group.

[0036] It can be understood that the bench test parameter group may include parameters such as frequency, force, displacement, etc., and the bench test parameter group may be set by a tester.

[0037] The bench test parameter sequence includes a first bench test parameter group, and the parameters of the preset dynamic stiffness test bench are adjusted according to the first bench test parameter group. In the above description, it is pointed out that the preset dynamic stiffness test bench includes instruments such as a dynamic exciter and an acceleration sensor, and then the frequency of the dynamic exciter can be adjusted according to the parameters in the first bench test parameter group, or the parameters in the acceleration sensor can be adjusted, so as to control the excitation force of the dynamic exciter.

[0038] A dynamic stiffness test is performed on a suspension test specimen installed in a preset dynamic stiffness test bench after parameter adjustment to obtain a first dynamic stiffness value corresponding to the first bench test parameter group.

[0039] It can be understood that since the present embodiment is tested on a preset dynamic stiffness test bench, and the suspension test sample (equivalent to the suspension system connected to the powertrain and the body in the car) is subjected to gravity and torque in the actual working state when it is mounted on the car, in order to ensure the accuracy of the test, in the present embodiment, when performing the dynamic stiffness test, it is first necessary to apply a static preload to the suspension test sample through the static loading device in the preset dynamic stiffness test bench, and the static preload includes two directions: one is a vertical static preload (equivalent to gravity), and the other is a lateral static preload (equivalent to torque). After the static preload is applied, the dynamic exciter in the preset dynamic stiffness test bench is used to apply dynamic excitation to the suspension test sample, and the first dynamic stiffness value corresponding to the first bench test parameter group is obtained. Further, when applying dynamic excitation to the suspension test sample, it is necessary to apply dynamic excitation to the three directions (i.e., X direction, Y direction, and Z direction) of the suspension test sample respectively, so as to obtain the first dynamic stiffness values ​​in different directions under the first bench test parameter group.

[0040] It is detected whether the bench test parameter sequence includes a bench test parameter group other than the first bench test parameter group.

[0041] When the bench test parameter sequence does not include a bench test parameter group other than the first bench test parameter group, the bench high frequency dynamic stiffness test result is generated according to the first bench test parameter group and the first dynamic stiffness value.

[0042] Specifically, after a dynamic stiffness test is performed on the suspension test specimen installed in a preset dynamic stiffness test bench after parameter adjustment to obtain a first dynamic stiffness value corresponding to the first bench test parameter group, it is detected whether the bench test parameter sequence includes other bench test parameter groups except the first bench test parameter group. If the bench test parameter sequence does not include other bench test parameter groups except the first bench test parameter group, it represents that all bench test parameter groups in the bench test parameter sequence have been selected, then the first bench test parameter group is associated with the first dynamic stiffness value, and the associated result is determined as the bench high-frequency dynamic stiffness test result.

[0043] In one embodiment, the bench test parameter sequence of the bench test parameter group further includes a second bench test parameter group. The parameters of the preset dynamic stiffness test bench are adjusted again according to the second bench test parameter group, and a dynamic stiffness test is performed on the suspension test sample installed in the preset dynamic stiffness test bench after the parameters are adjusted again, so as to obtain a second dynamic stiffness value corresponding to the second bench test parameter group.

[0044] Specifically, firstly, a static preload is applied to the suspension test sample by a static loading device in a preset dynamic stiffness test bench, and then a dynamic excitation is applied to the suspension test sample by a dynamic exciter in a preset dynamic stiffness test bench, so as to obtain a second dynamic stiffness value corresponding to the second bench test parameter group. It can be understood that, since the preset dynamic stiffness test bench is adjusted again according to the second bench test parameter group, that is, the first bench test parameter in the preset dynamic stiffness test bench is replaced with the second bench test parameter, the dynamic excitation applied to the suspension test sample by the dynamic exciter at this time is different from the dynamic excitation applied to the suspension test sample by the dynamic exciter, and thus the second dynamic stiffness value obtained is also different from the first dynamic stiffness value. Similarly, when applying dynamic excitation to the suspension test sample, it is necessary to apply dynamic excitation to the three directions (i.e., X direction, Y direction, and Z direction) of the suspension test sample respectively, so as to obtain the second dynamic stiffness values ​​in different directions under the second bench test parameter group.

[0045] It is detected whether the bench test parameter sequence includes a bench test parameter group other than the first bench test parameter group and the second bench test parameter group.

[0046] When the bench test parameter sequence does not include other bench test parameter groups except the first bench test parameter group and the second bench test parameter group, the bench high-frequency dynamic stiffness test result is generated according to the first bench test parameter group, the first dynamic stiffness value, the second bench test parameter group and the second dynamic stiffness value.

[0047] Specifically, after a dynamic stiffness test is performed on the suspension test specimen installed in a preset dynamic stiffness test bench after parameter adjustment again, and a second dynamic stiffness value corresponding to the second bench test parameter group is obtained, it is detected whether the bench test parameter sequence includes other bench test parameter groups except the first bench test parameter group and the second bench test parameter group. If the bench test parameter sequence does not include other bench test parameter groups except the first bench test parameter group and the second bench test parameter group, all bench test parameter groups in the bench test parameter sequence are selected, and then the first bench test parameter group can be associated with the first dynamic stiffness value, and the second bench test parameter group can be associated with the second dynamic stiffness value, and then a high-frequency dynamic stiffness test result is generated according to the associated result.

[0048] Furthermore, if the bench test parameter sequence also includes other bench test parameter groups in addition to the first bench test parameter group and the second bench test parameter group, the third bench test parameter group and the fourth bench test parameter group can be selected from the bench test parameter sequence, and the above steps can be executed, thereby possibly generating a third dynamic stiffness value, a fourth dynamic stiffness value, etc. The specific implementation method steps are the same as the above steps and will not be repeated here.

[0049] In this embodiment, by setting different bench test parameter groups, the dynamic stiffness test of the suspension test sample is performed through a preset dynamic stiffness test bench, so as to obtain the dynamic stiffness value of the suspension test sample under different bench test parameter groups, thereby improving the comprehensiveness and accuracy of the high-frequency dynamic stiffness test.

[0050] In one embodiment, step S20, that is, performing a vibration test on a suspension test sample installed in a preset test vehicle to determine a whole vehicle vibration test result corresponding to the suspension test sample, includes:

[0051] Acquire a whole vehicle test parameter sequence; the whole vehicle test parameter sequence includes at least one whole vehicle test parameter group.

[0052] It can be understood that the whole vehicle test parameter group may include parameters such as driving speed, driving acceleration, etc., and the whole vehicle test parameter group can be set by the tester.

[0053] The whole vehicle test parameter sequence includes a first whole vehicle test parameter group, and the preset test vehicle equipped with the suspension test sample is driven under preset road conditions with the first whole vehicle test parameter group.

[0054] Specifically, after obtaining the whole vehicle test parameter sequence, a preset test vehicle equipped with a suspension test sample is driven under a preset road condition with a first whole vehicle test parameter group. The preset road condition is a smooth road condition, which indicates that the friction of the road surface is small. For example, a road surface with a friction coefficient of less than 0.5 satisfies the smooth road condition.

[0055] During the driving of the preset test vehicle, first vibration data and a first in-vehicle noise value corresponding to the first whole vehicle test parameter group are obtained, and it is detected whether the whole vehicle test parameter sequence also includes a whole vehicle test parameter group other than the first whole vehicle test parameter group.

[0056] It can be understood that the first vibration data includes active end vibration data and passive end vibration data. The active end vibration data is the vibration data of the active end collected by the vibration sensor set on the preset test car, and the active end is the end where the suspension test sample is connected to the powertrain; the passive end data is the vibration data of the passive end collected by the vibration sensor set on the preset test car, and the passive end is the end where the suspension test sample is connected to the body of the preset test car. The first in-car noise value is the noise transmitted from the powertrain to the interior of the preset test car through the suspension test sample during the driving of the preset test car. The first in-car noise value can be collected by a sound sensor. The first vibration data and the first in-car noise value are both stored in the database of the preset test car. The vehicle-mounted controller of the preset test car can directly obtain them from the database, and then the first vibration data and the first in-car noise value transmitted by the vehicle-mounted controller can be received by establishing a communication connection between the vehicle-mounted controllers.

[0057] When the whole vehicle test parameter sequence does not include a whole vehicle test parameter group other than the first whole vehicle test parameter group, the whole vehicle vibration test result is generated according to the first whole vehicle test parameter group, the first vibration data and the first in-vehicle noise value.

[0058] Specifically, after obtaining the first vibration data and the first in-vehicle noise value corresponding to the first vehicle test parameter group, it can be detected whether the vehicle test parameter sequence also includes a whole vehicle test parameter group other than the first whole vehicle test parameter group. If the whole vehicle test parameter sequence does not include a whole vehicle test parameter group other than the first whole vehicle test parameter group, then all the whole vehicle test parameter groups in the whole vehicle test parameter sequence are selected, and then the first whole vehicle test parameter group, the first vibration data and the first in-vehicle noise value are all associated, and the associated result is determined as the whole vehicle vibration test result.

[0059] In one embodiment, the vehicle test parameter sequence further includes a second vehicle test parameter group. The preset test vehicle equipped with the suspension test sample is driven under preset road conditions with the second vehicle test parameter group.

[0060] During the driving of the preset test vehicle, second vibration data and second in-vehicle noise value corresponding to the second whole vehicle test parameter group are obtained, and it is detected whether the whole vehicle test parameter sequence also includes a whole vehicle test parameter group other than the first whole vehicle test parameter group and the second whole vehicle test parameter group.

[0061] Specifically, during the driving process of the preset test car, the active end vibration data and the passive end vibration data are collected by the vibration sensor arranged in the preset test car, thereby obtaining the second vibration data, and the second in-car noise value is collected by the sound sensor arranged in the preset test car, so that the second vibration data and the second in-car noise value are obtained by the in-car controller through the communication connection with the in-vehicle controller of the preset test car. It should be noted that, since the second whole vehicle test parameter group is different from the first whole vehicle test parameter group, the second vibration data is different from the first vibration data, and the second in-car noise value is also different from the first in-car noise value.

[0062] When the whole vehicle test parameter sequence does not include a whole vehicle test parameter group other than the first whole vehicle test parameter group and the second whole vehicle test parameter group, the whole vehicle vibration test result is generated according to the first whole vehicle test parameter group, the first vibration data, the first vehicle interior noise value, the second whole vehicle test parameter group, the second vibration data and the second vehicle interior noise value.

[0063] Specifically, after obtaining the second vibration data and the second in-vehicle noise value corresponding to the second whole vehicle test parameter group, it is detected whether the whole vehicle test parameter sequence also includes a whole vehicle test parameter group other than the first whole vehicle test parameter group and the second whole vehicle test parameter group. If the whole vehicle test parameter sequence does not include a whole vehicle test parameter group other than the first whole vehicle test parameter group and the second whole vehicle test parameter group, all the whole vehicle test parameter groups in the whole vehicle test parameter sequence are selected, and then the first whole vehicle test parameter group, the first vibration data and the first in-vehicle noise value are all associated, and the second whole vehicle test parameter group, the second vibration data and the second in-vehicle noise value are all associated, and the associated result is determined as the whole vehicle vibration test result.

[0064] Furthermore, after detecting whether the whole vehicle test parameter sequence also includes whole vehicle test parameter groups other than the first whole vehicle test parameter group and the second whole vehicle test parameter group, if the whole vehicle test parameter sequence also includes whole vehicle test parameter groups other than the first whole vehicle test parameter group and the second whole vehicle test parameter group, a third whole vehicle test parameter group, a fourth whole vehicle test parameter group, etc. may also be selected, and third vibration data, third in-vehicle noise value and other data may be determined. The specific implementation method steps are the same as the above steps and will not be repeated here.

[0065] In this embodiment, by setting different vehicle test parameter groups, the suspension test sample is subjected to vibration test through a preset test vehicle, so as to obtain vibration data of the suspension test sample under different vehicle test parameter groups, thereby improving the comprehensiveness and accuracy of the high-frequency dynamic stiffness test.

[0066] In one embodiment, the test result of the bench high frequency dynamic stiffness includes a plurality of test dynamic stiffness groups; the test result of the whole vehicle vibration includes a plurality of test vibration groups;

[0067] Determining a first suspension high-frequency performance test result corresponding to the suspension test sample according to the bench high-frequency dynamic stiffness test result and the vehicle vibration test result includes:

[0068] All test dynamic stiffness groups are determined according to the test results of the bench high-frequency dynamic stiffness; each of the test dynamic stiffness groups includes a first parameter and a dynamic stiffness value associated with the first parameter; the first parameters in each of the test dynamic stiffness groups are different.

[0069] It can be understood that in the above description, it is pointed out that the bench high frequency dynamic stiffness test result includes at least one dynamic stiffness value, and one dynamic stiffness value is associated with one bench test parameter group, so the test dynamic stiffness group is the interrelated dynamic stiffness values ​​and bench test parameter group. The first parameter can be the force and displacement parameter values ​​in the bench test parameter group, and the force and displacement parameter values ​​in each bench test parameter group are different, so the first parameters in each test dynamic stiffness group are different.

[0070] All test vibration groups are determined according to the whole vehicle vibration test results; each of the test vibration groups includes a second parameter, a vibration isolation rate associated with the second parameter, and an in-vehicle noise value; the number of the second parameters is the same as the number of the first parameters, and each second parameter in the whole vehicle vibration test results corresponds one-to-one to each first parameter in the test bench high-frequency dynamic stiffness test results.

[0071] It can be understood that the above description points out that the whole vehicle vibration test results include at least one vibration data and at least one in-vehicle noise value, one vibration data is associated with one in-vehicle noise value, and the associated vibration data and in-vehicle noise value both correspond to a whole vehicle test parameter group, so the test vibration group is the interrelated vibration data, in-vehicle noise value and whole vehicle test parameter group. The second parameter is the acceleration value in the whole vehicle test parameter group. Since the vibration data includes the active end vibration data and the passive end vibration data, the vibration isolation rate can be determined based on the active end vibration data and the passive end vibration data.

[0072] Furthermore, the number of second parameters is the same as the number of first parameters, that is, the number of first parameters included in the test dynamic stiffness group is the same as the number of second parameters included in the test vibration group, and each second parameter in the vehicle vibration test result corresponds one-to-one to each first parameter in the high-frequency dynamic stiffness test result of the test bench.

[0073] Specifically, after determining all test dynamic stiffness groups according to the high-frequency dynamic stiffness test results of the test bench, and determining all test vibration groups according to the whole vehicle vibration test results, the dynamic stiffness values, vibration isolation rates and in-vehicle noise values ​​corresponding to the corresponding first parameter and the second parameter are associated and recorded as a performance test parameter group corresponding to the first parameter.

[0074] A first suspension high-frequency performance test result corresponding to the suspension test sample is determined according to each of the performance test parameter groups.

[0075] Specifically, after the dynamic stiffness values, vibration isolation rates and in-vehicle noise values ​​corresponding to the first parameter and the second parameter are associated and recorded as a performance test parameter group corresponding to the first parameter, the dynamic stiffness values, vibration isolation rates and in-vehicle noise values ​​in different performance test parameter groups can be compared to determine the correlation between the dynamic stiffness values, vibration isolation rates and in-vehicle noise values, and then obtain the first suspension high-frequency performance test results.

[0076] In one embodiment, determining all test vibration groups according to the whole vehicle vibration test results includes:

[0077] Vibration data corresponding to each of the second parameters in the vehicle vibration test result is obtained, and each of the vibration data includes an active end vibration data and a passive end vibration data.

[0078] It can be understood that the above description points out that the whole vehicle vibration test results include at least one vibration data and at least one in-vehicle noise value, one vibration data is associated with one in-vehicle noise value, and the associated vibration data and in-vehicle noise value each correspond to a whole vehicle test parameter group, and the whole vehicle test parameter group includes a second parameter, so each second parameter corresponds to a vibration data, and one vibration data includes an active end vibration data and a passive end vibration data.

[0079] A vibration isolation rate corresponding to each of the second parameters is generated according to the active end vibration data and the passive end vibration data included in each of the vibration data.

[0080] Specifically, after obtaining vibration data corresponding to each second parameter in the vehicle vibration test result, the vibration isolation rate corresponding to the corresponding second parameter can be generated according to the active end vibration data and passive end data contained in each vibration data.

[0081] Furthermore, the vibration isolation rate can be determined by the following expression:

[0082]

[0083] in, is the vibration isolation rate; It is the vibration data of the active end; It is the passive end vibration data.

[0084] A test vibration group is generated according to the second parameter and the vibration isolation rate and the in-vehicle noise value corresponding to the second parameter.

[0085] Specifically, after generating the vibration isolation rate corresponding to each second parameter according to the active end vibration data and the passive end vibration data contained in each vibration data, the test vibration group can be determined according to the second parameter, the corresponding vibration isolation rate and the in-vehicle noise value.

[0086] Furthermore, in the above description, it is mentioned that Figure 2 It can be determined that when the dynamic stiffness value is lower, the vibration data is lower, and the noise value inside the car is lower. The relationship between the dynamic stiffness value, the vibration isolation rate and the noise value inside the car is that the lower the dynamic stiffness value, the higher the vibration isolation rate and the smaller the noise value inside the car. Therefore, when improving the NVH performance of the car, the high-frequency dynamic stiffness of the suspension system installed on the car connecting the powertrain and the car body can be reduced, thereby improving the vibration isolation rate of the suspension system, and then achieving the effect of reducing the noise inside the car, thereby improving the NVH performance of the car and also improving the comfort of users using the car.

[0087] In one embodiment, after step S30, after determining the first suspension high-frequency performance test result corresponding to the suspension test sample according to the bench high-frequency dynamic stiffness test result and the vehicle vibration test result, the method further includes:

[0088] Acquire the structural parameters of the suspension comparison sample; the structural parameters of the suspension test sample include a first hardness parameter; the structural parameters of the suspension comparison sample include a second hardness parameter different from the first hardness parameter.

[0089] It can be understood that the suspension comparison sample structural parameters are different from the suspension test sample structural parameters. The main difference is that the second hardness parameter in the suspension comparison sample structural parameters is different from the first hardness parameter in the suspension test sample structural parameters. Among them, the second hardness parameter can be less than the first hardness parameter or greater than the first hardness parameter, which is not limited here. The first hardness parameter and the second hardness parameter both refer to static stiffness.

[0090] A bench high-frequency dynamic stiffness test and a whole vehicle vibration test are performed on the suspension comparison sample to obtain a second suspension high-frequency performance test result corresponding to the suspension comparison sample.

[0091] Specifically, a high-frequency dynamic stiffness test is performed on the suspension comparison sample installed in a preset dynamic stiffness test bench, and a whole-vehicle vibration test is performed on the suspension comparison sample installed in a preset test vehicle, so as to obtain the dynamic stiffness test result and the vibration test result corresponding to the suspension comparison sample, and then determine the second suspension high-frequency performance test result according to the dynamic stiffness test result and the vibration test result. The bench high-frequency dynamic stiffness test and the whole-vehicle vibration test in this embodiment are the same as the steps implemented in steps S10 and S20, and will not be repeated here. The specific implementation process can refer to the above implementation steps.

[0092] A hardness-NVH performance comparison result is determined according to the first hardness parameter, the second hardness parameter, the first suspension high-frequency performance test result, and the second suspension high-frequency performance test result.

[0093] Specifically, after performing a bench high-frequency dynamic stiffness test and a vehicle vibration test on the suspension comparison sample to obtain a second suspension high-frequency performance test result corresponding to the suspension comparison sample, the first suspension high-frequency performance test result and the second suspension high-frequency performance test result can be compared to determine which of the first hardness parameter and the second hardness parameter corresponds to a smaller in-vehicle noise value, thereby determining the hardness-NVH performance comparison result.

[0094] For example, Figure 3 As shown, Figure 3 The first hardness parameter indicated in is greater than the second hardness parameter; A1 is the curve corresponding to the dynamic stiffness value corresponding to the first hardness parameter, and A2 is the curve corresponding to the dynamic stiffness value corresponding to the second hardness parameter. It is determined from the two curves A1 and A2 that the larger the hardness parameter, the larger the dynamic stiffness value; B1 is the curve corresponding to the passive end vibration isolation data in the Z direction of the passive end corresponding to the first hardness parameter, and B2 is the curve corresponding to the passive end vibration isolation data in the Z direction of the passive end corresponding to the second hardness parameter. It is determined from the two curves B1 and B2 that the larger the hardness parameter, the larger the vibration isolation data; C1 is the curve corresponding to the in-vehicle noise value corresponding to the first hardness parameter, and C2 is the curve corresponding to the in-vehicle noise value corresponding to the second hardness parameter. It is determined from the two curves C1 and C2 that the larger the hardness parameter, the larger the in-vehicle noise value; therefore, the smaller the hardness parameter, the smaller the dynamic stiffness value, the smaller the vibration data, and the smaller the in-vehicle noise value. When improving the NVH performance of a car, a suspension system with a smaller hardness parameter can be selected, thereby reducing the in-vehicle noise, thereby improving the NVH performance of the car.

[0095] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0096] In one embodiment, a vehicle suspension high-frequency performance test system is provided, comprising a controller, a preset dynamic stiffness test bench, and an on-board controller arranged in a preset test vehicle; the controller is connected to both the preset dynamic stiffness test bench and the on-board controller, and the controller is used to implement the above-mentioned vehicle suspension high-frequency performance test method.

[0097] Furthermore, the controller is connected to a preset dynamic stiffness test bench, so that the controller can change the bench test parameter group of the preset dynamic stiffness test bench, and control the preset dynamic stiffness test bench to perform a dynamic stiffness test on a test sample (such as the above-mentioned suspension test sample or suspension comparison sample), and obtain the dynamic stiffness value obtained by the test; the controller is connected to the vehicle-mounted controller, so that when the vehicle-mounted controller obtains the vibration data and the in-vehicle noise value obtained by the whole vehicle vibration test, the vehicle-mounted controller can transmit the vibration data and the in-vehicle noise value to the controller, thereby determining the whole vehicle vibration test result.

[0098] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned vehicle suspension high-frequency performance testing method is implemented.

[0099] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0100] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0101] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for testing high-frequency performance of automobile suspension, characterized in that: include: A bench high-frequency dynamic stiffness test is performed on a suspension test sample installed in a preset dynamic stiffness test bench to obtain a bench high-frequency dynamic stiffness test result corresponding to the suspension test sample; the bench high-frequency dynamic stiffness test result includes at least one dynamic stiffness value, and one dynamic stiffness value is associated with a bench test parameter group; the bench test parameter group includes force and displacement parameters; the dynamic stiffness frequency range of the suspension test sample is a high-frequency region of 1000 to 2000 Hz; A whole vehicle vibration test is performed on a suspension test sample installed in a preset test vehicle to obtain a whole vehicle vibration test result corresponding to the suspension test sample; the whole vehicle vibration test result includes at least one vibration data and at least one in-vehicle noise value, one vibration data is associated with one in-vehicle noise value, and the associated vibration data and in-vehicle noise value each correspond to a whole vehicle test parameter group; the whole vehicle test parameter group includes acceleration parameters; the force and displacement parameters have a one-to-one correspondence with the acceleration parameters; Determine a first suspension high-frequency performance test result corresponding to the suspension test sample according to the bench high-frequency dynamic stiffness test result and the vehicle vibration test result; The first suspension high-frequency performance test result is determined based on a one-to-one correspondence between the force and displacement parameters and the acceleration parameters, and is determined by corresponding dynamic stiffness values, vibration data, and in-vehicle noise values.

2. The vehicle suspension high frequency performance testing method according to claim 1, characterized in that: The method of performing a bench high-frequency dynamic stiffness test on a suspension test sample installed in a preset dynamic stiffness test bench to obtain a bench high-frequency dynamic stiffness test result corresponding to the suspension test sample includes: Acquire a bench test parameter sequence; the bench test parameter sequence includes at least one bench test parameter group; The bench test parameter sequence includes a first bench test parameter group, and a dynamic stiffness test is performed on the suspension test sample in the preset dynamic stiffness test bench according to the first bench test parameter group to obtain a first dynamic stiffness value corresponding to the first bench test parameter group; Detecting whether the bench test parameter sequence includes a bench test parameter group other than the first bench test parameter group; When the bench test parameter sequence does not include a bench test parameter group other than the first bench test parameter group, the bench high frequency dynamic stiffness test result is generated according to the first bench test parameter group and the first dynamic stiffness value.

3. The vehicle suspension high frequency performance testing method according to claim 2, characterized in that: The bench test parameter sequence also includes a second bench test parameter group; Performing a dynamic stiffness test on the suspension test specimen in the preset dynamic stiffness test bench according to the second bench test parameter group to obtain a second dynamic stiffness value corresponding to the second bench test parameter group; Detecting whether the bench test parameter sequence includes a bench test parameter group other than the first bench test parameter group and the second bench test parameter group; When the bench test parameter sequence does not include other bench test parameter groups except the first bench test parameter group and the second bench test parameter group, the bench high-frequency dynamic stiffness test result is generated according to the first bench test parameter group, the first dynamic stiffness value, the second bench test parameter group and the second dynamic stiffness value.

4. The vehicle suspension high frequency performance testing method according to claim 1, characterized in that: The whole vehicle vibration test is performed on the suspension test sample installed in the preset test vehicle to obtain the whole vehicle vibration test result corresponding to the suspension test sample, including: Acquire a whole vehicle test parameter sequence; the whole vehicle test parameter sequence includes at least one whole vehicle test parameter group; The whole vehicle test parameter sequence includes a first whole vehicle test parameter group, and the preset test vehicle equipped with the suspension test sample is driven under preset road conditions with the first whole vehicle test parameter group; During the running of the preset test vehicle, first vibration data and a first in-vehicle noise value corresponding to the first vehicle test parameter group are obtained, and whether the vehicle test parameter sequence also includes a vehicle test parameter group other than the first vehicle test parameter group is detected; When the whole vehicle test parameter sequence does not include a whole vehicle test parameter group other than the first whole vehicle test parameter group, the whole vehicle vibration test result is generated according to the first whole vehicle test parameter group, the first vibration data and the first in-vehicle noise value.

5. The vehicle suspension high frequency performance testing method according to claim 4, characterized in that: The whole vehicle test parameter sequence also includes a second whole vehicle test parameter group; Allowing the preset test vehicle equipped with the suspension test sample to drive under preset road conditions with the second vehicle test parameter group; During the running of the preset test vehicle, second vibration data and second in-vehicle noise value corresponding to the second whole vehicle test parameter group are obtained, and whether the whole vehicle test parameter sequence also includes a whole vehicle test parameter group other than the first whole vehicle test parameter group and the second whole vehicle test parameter group is detected; When the whole vehicle test parameter sequence does not include a whole vehicle test parameter group other than the first whole vehicle test parameter group and the second whole vehicle test parameter group, the whole vehicle vibration test result is generated according to the first whole vehicle test parameter group, the first vibration data, the first vehicle interior noise value, the second whole vehicle test parameter group, the second vibration data and the second vehicle interior noise value.

6. The vehicle suspension high frequency performance testing method according to claim 1, characterized in that: The bench high frequency dynamic stiffness test result includes a plurality of test dynamic stiffness groups; the vehicle vibration test result includes a plurality of test vibration groups; Determining a first suspension high-frequency performance test result corresponding to the suspension test sample according to the bench high-frequency dynamic stiffness test result and the vehicle vibration test result includes: Determine all test dynamic stiffness groups according to the test results of the bench high-frequency dynamic stiffness; each of the test dynamic stiffness groups includes a first parameter and a dynamic stiffness value associated with the first parameter; the first parameters in each of the test dynamic stiffness groups are different; Determine all test vibration groups according to the whole vehicle vibration test results; each of the test vibration groups includes a second parameter, a vibration isolation rate associated with the second parameter, and a vehicle interior noise value; the second parameters are the same in number as the first parameters, and each second parameter in the whole vehicle vibration test results corresponds one-to-one to each first parameter in the bench high-frequency dynamic stiffness test results; The dynamic stiffness value, vibration isolation rate and in-vehicle noise value corresponding to the first parameter and the second parameter are associated and recorded as a performance test parameter group corresponding to the first parameter; A first suspension high-frequency performance test result corresponding to the suspension test sample is determined according to each of the performance test parameter groups.

7. The vehicle suspension high frequency performance testing method according to claim 6, characterized in that: Determining all test vibration groups according to the vehicle vibration test results includes: Acquire vibration data corresponding to each of the second parameters in the vehicle vibration test result, each of the vibration data includes an active end vibration data and a passive end vibration data; Generate a vibration isolation rate corresponding to each second parameter according to the active end vibration data and the passive end vibration data included in each vibration data; A test vibration group is generated according to the second parameter and the vibration isolation rate and the in-vehicle noise value corresponding to the second parameter.

8. The vehicle suspension high frequency performance testing method according to claim 1, characterized in that: After determining the first suspension high-frequency performance test result corresponding to the suspension test sample according to the bench high-frequency dynamic stiffness test result and the vehicle vibration test result, the method further includes: Acquire structural parameters of a suspension comparison sample; the structural parameters of the suspension test sample include a first hardness parameter; the structural parameters of the suspension comparison sample include a second hardness parameter different from the first hardness parameter; Performing a bench high-frequency dynamic stiffness test and a vehicle vibration test on the suspension comparison sample to obtain a second suspension high-frequency performance test result corresponding to the suspension comparison sample; A hardness-NVH performance comparison result is determined according to the first hardness parameter, the second hardness parameter, the first suspension high-frequency performance test result, and the second suspension high-frequency performance test result.

9. A vehicle suspension high frequency performance test system, characterized in that: It comprises a controller, a preset dynamic stiffness test bench and an on-board controller arranged in a preset test vehicle; the controller is connected to both the preset dynamic stiffness test bench and the on-board controller, and the controller is used to implement the vehicle suspension high-frequency performance test method as described in any one of claims 1 to 8.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method for testing high-frequency performance of an automobile suspension as claimed in any one of claims 1 to 8 is implemented.

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