Methods, devices, equipment and media for evaluating vibration absorption in vehicle suspension systems

Abstract

This invention discloses a method, apparatus, device, and medium for evaluating vibration absorption in a vehicle suspension system. The method includes: before installing a dynamic vibration absorber in the suspension system, acquiring a first vibration value detected at a second position point when a first position point in the suspension system vibrates; determining a first transmission curve based on the first vibration value; after installing the dynamic vibration absorber in the suspension system, acquiring a second vibration value detected at the second position point when the first position point vibrates; determining a second transmission curve based on the second vibration value; and evaluating the vibration absorption effect of the suspension system based on the first and second transmission curves to obtain an evaluation result. By using the transmission curve between the first and second position points of the suspension system to guide the design of the dynamic vibration absorber, the matching of the dynamic vibration absorber's operating frequency band with the problematic frequency band inside the vehicle is improved, thereby increasing the accuracy of determining the center frequency band of the dynamic vibration absorber and effectively improving the vibration absorption effect of the suspension system.

Description

Technical Field

[0001] This invention relates to the field of dynamic vibration absorber technology, and in particular to a method, apparatus, equipment and medium for evaluating vibration absorption in vehicle suspension systems. Background Technology

[0002] During vehicle development, the mounting system is a key component connecting the powertrain system and the body system. While supporting the powertrain system, it also serves as the main structural transmission path, transmitting the vibrations and noise of the powertrain system to the vehicle interior. In order to balance the performance requirements of various vehicle components, the design of the mounting system structure may selectively sacrifice vibration isolation at certain frequencies. During the vehicle performance tuning phase, dynamic vibration absorbers have a good vibration reduction effect on vibrations within a set center frequency band. Therefore, the method of installing dynamic vibration absorbers on the mounting system can compensate for the deficiencies in the development process of the mounting system.

[0003] To accurately match the center frequency band of the dynamic vibration absorber's action with the in-vehicle problem frequency band, the existing technology mainly determines the center frequency band of the dynamic vibration absorber by determining the origin frequency response curve through simulation analysis or experiments. However, in practical applications, simulation methods are limited by simulation accuracy and often have deviations. Furthermore, the origin frequency response curve does not strictly match the transfer function curve generated on the path of the suspension system. Therefore, it is often impossible to accurately give the optimal center frequency band of the dynamic vibration absorber, which affects the design of the dynamic vibration absorber and cannot effectively improve the vibration absorption effect of the suspension system.

[0004] Therefore, improving the accuracy of determining the center frequency band of the dynamic vibration absorber, thereby improving the vibration absorption effect of the vehicle suspension system, has become an urgent problem to be solved. Summary of the Invention

[0005] Based on this, a method, apparatus, equipment, and medium for evaluating the vibration absorption of a vehicle suspension system are provided to address the problem of how to improve the accuracy of determining the center frequency band of a dynamic vibration absorber, thereby improving the vibration absorption effect of the vehicle suspension system.

[0006] In a first aspect, embodiments of the present invention provide a vibration absorption evaluation method for a vehicle suspension system, the vibration absorption evaluation method comprising the following steps:

[0007] Before installing the dynamic vibration absorber in the suspension system, a first vibration value detected at a second position point is obtained when a first position point in the suspension system vibrates, and a first transmission curve is determined based on the first vibration value;

[0008] After the dynamic vibration absorber is installed in the suspension system, the second vibration value detected at the second position point is obtained when the first position point is vibrated, and the second transmission curve is determined based on the second vibration value;

[0009] The vibration absorption effect of the suspension system is evaluated based on the first transmission curve and the second transmission curve, and the evaluation results are obtained.

[0010] Secondly, embodiments of the present invention provide a vibration absorption evaluation device for a vehicle suspension system, the vibration absorption evaluation device comprising:

[0011] The first experimental module is used to obtain a first vibration value detected at a second position point when a first position point in the suspension system is vibrated before the dynamic vibration absorber is installed in the suspension system, and to determine a first transmission curve based on the first vibration value.

[0012] The second experimental module is used to obtain the second vibration value detected at the second position point when the first position point is vibrated after the dynamic vibration absorber is installed in the suspension system, and to determine the second transmission curve based on the second vibration value.

[0013] The first evaluation module is used to evaluate the vibration absorption effect of the suspension system based on the first transmission curve and the second transmission curve, and obtain the evaluation result.

[0014] Thirdly, embodiments of the present invention provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above-described vibration absorption evaluation method for vehicle suspension systems.

[0015] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the above-described vibration absorption evaluation method for vehicle suspension systems.

[0016] The beneficial effects of the embodiments of the present invention compared with the prior art are as follows: Before installing the dynamic vibration absorber in the suspension system, the present invention obtains the first vibration value detected at the second position point when the first position point in the suspension system vibrates, and determines the first transmission curve based on the first vibration value. After installing the dynamic vibration absorber in the suspension system, the present invention obtains the second vibration value detected at the second position point when the first position point vibrates, and determines the second transmission curve based on the second vibration value. Based on the first transmission curve and the second transmission curve, the vibration absorption effect of the suspension system is evaluated, and the evaluation result is obtained. Specifically, by detecting the vibration value at the second position point when the first position point of the suspension system vibrates, and determining the transmission curve based on the vibration value at the second position point, the design of the dynamic vibration absorber is guided by the transmission curve between the two points of the suspension system. This improves the matching between the operating frequency band of the dynamic vibration absorber and the problematic frequency band inside the vehicle, thereby improving the accuracy of determining the center frequency band of the dynamic vibration absorber. This effectively solves the problems of noise, vibration, and acoustic roughness (NVH) at specific frequencies transmitted to the vehicle through the suspension system, improving the vibration absorption effect of the suspension system and the overall NVH performance of the vehicle. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating a vibration absorption evaluation method for a vehicle suspension system provided in Embodiment 1 of the present invention;

[0019] Figure 2 This is a comparative schematic diagram of transmission curves at a specific frequency provided in Embodiment 1 of the present invention;

[0020] Figure 3 This is a flowchart illustrating a vibration absorption evaluation method for a vehicle suspension system provided in Embodiment 2 of the present invention;

[0021] Figure 4 This is a spectrum analysis diagram of in-vehicle sound provided in Embodiment 2 of the present invention;

[0022] Figure 5 This is a spectral analysis diagram of the vibration of a suspension system provided in Embodiment 2 of the present invention;

[0023] Figure 6 This is a flowchart illustrating a vibration absorption evaluation method for a vehicle suspension system provided in Embodiment 3 of the present invention;

[0024] Figure 7 This is a flowchart illustrating a vibration absorption evaluation method for a vehicle suspension system provided in Embodiment 4 of the present invention;

[0025] Figure 8 This is a schematic diagram of the vibration absorption effect of the suspension system after installing a dynamic vibration absorber in the suspension system, provided in Embodiment 4 of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of a vibration absorption evaluation device for a vehicle suspension system provided in Embodiment 5 of the present invention;

[0027] Figure 10 This is a schematic diagram of the structure of a computer device provided in Embodiment Six of the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] like Figure 1 The diagram shown is a flowchart illustrating a vibration absorption evaluation method for a vehicle suspension system according to Embodiment 1 of the present invention. This vibration absorption evaluation method includes the following steps:

[0030] Step S101: Before installing the dynamic vibration absorber in the suspension system, obtain the first vibration value detected at the second position point when the first position point in the suspension system vibrates, and determine the first transmission curve based on the first vibration value.

[0031] In this embodiment, the suspension system can refer to an important component connecting the powertrain system and the body system, and may include elastic elements, shock absorbers, and guide mechanisms. Vibration absorption control can refer to adding an additional subsystem to the main vibration system, so that the subsystem absorbs part of the energy generated by vibration, thereby reducing the energy transmitted to the main vibration system. This additional subsystem device is the dynamic vibration absorber. The first position point and the second position point can refer to two different positions in the suspension system. The first vibration value can refer to the response signal value generated by the vibration of the first position point detected at the second position point before the dynamic vibration absorber is installed in the suspension system. The first transmission curve can refer to the vibration transfer function (VTF) curve representing the vibration characteristics from the first position point to the second position point before the dynamic vibration absorber is installed in the suspension system. The VTF curve can represent the vibration transmission characteristics from the first position point to the second position point when vibration occurs at the first position point.

[0032] Specifically, the location where the vehicle suspension system connects to the powertrain system can be selected as the first location point, and the location where the vehicle suspension system connects to the body system can be selected as the second location point. Vibration can be applied to the first location point by arranging a vibration excitation device such as a vibrator or by vibrating the vehicle engine itself. A triaxial sensor can be arranged at the second location point to detect the first vibration value generated by the vibration at the first location point. The first vibration value generated at the second location point can be obtained. The first transfer curve can be determined by using a corresponding vibration transfer function curve generation tool.

[0033] Step S102: After installing the dynamic vibration absorber in the suspension system, obtain the second vibration value detected at the second position point when the first position point is vibrated, and determine the second transmission curve based on the second vibration value.

[0034] In this embodiment, the second vibration value can refer to the response signal value generated by the vibration at the first position point detected at the second position point after the dynamic vibration absorber is installed in the suspension system, and the second transmission curve can refer to the VTF curve representing the vibration characteristics from the first position point to the second position point after the dynamic vibration absorber is installed in the suspension system.

[0035] Specifically, after the dynamic shock absorber is installed in the suspension system, the second transmission curve can be determined by referring to the content in step S101 above.

[0036] like Figure 2 The diagram shown is a comparison schematic of transmission curves at a specific frequency according to Embodiment 1 of the present invention. Figure 2 The diagram shows a comparison of the Input Point Inertia (IPI) curve at the first position point, the IPI curve at the third position point (where vibration is transmitted between the first and second position points), and the VTF curve at the second position point at a specific frequency. The IPI curve at the first position point reflects the local stiffness characteristics of the first position point during vibration. The IPI curve at the third position point reflects the local stiffness characteristics of the third position point (where vibration is transmitted between the first and second position points) during vibration. The VTF curve at the second position point reflects the vibration transmission characteristics from the first position point to the second position point during vibration. Figure 2 As shown, at a specific frequency of 587.99Hz, when vibration occurs at the first position point, the VTF curve determined based on the vibration value at the second position point is closer to the engineering requirements. Therefore, the design of the dynamic vibration absorber can be guided by this VTF curve, which improves the matching between the operating frequency band of the dynamic vibration absorber and the frequency band of the in-vehicle problem, thereby improving the accuracy of determining the center frequency band of the dynamic vibration absorber.

[0037] Step S103: Evaluate the vibration absorption effect of the suspension system based on the first and second transmission curves to obtain the evaluation results.

[0038] In this embodiment, the evaluation result can refer to the improvement in the vibration absorption effect of the suspension system after installing a dynamic vibration absorber, as evaluated based on the first and second transmission curves. Specifically, based on the NVH problem points in the subjective evaluation results obtained from the vehicle's subjective evaluation, the problem frequency band corresponding to the NVH problem points can be determined. The changes in the first and second transmission curves near the problem frequency band can be compared. Based on the comparison results of the changes, it can be determined whether the installation of the dynamic vibration absorber effectively solves the NVH problem points in the subjective evaluation results, thereby determining the improvement in the vibration absorption effect of the suspension system after installing the dynamic vibration absorber. This improvement effect is the evaluation result. After obtaining the evaluation result, a comprehensive consideration can be made based on the evaluation result and the cost of the dynamic vibration absorber to decide whether to finally implement the installation of the dynamic vibration absorber on the suspension system to improve the vibration absorption effect of the suspension system.

[0039] In this embodiment, by detecting the vibration value at the second position point when the first position point in the suspension system vibrates, and determining the transmission curve based on the vibration value at the second position point, the design of the dynamic vibration absorber is guided by the transmission curve between the two points in the suspension system. This improves the matching between the operating frequency band of the dynamic vibration absorber and the problematic frequency band inside the vehicle, thereby improving the accuracy of determining the center frequency band of the dynamic vibration absorber. This effectively solves the NVH problem transmitted to the vehicle through the suspension system, and improves the vibration absorption effect of the suspension system and the overall NVH performance of the vehicle.

[0040] like Figure 3 The diagram shown is a flowchart illustrating a vibration absorption evaluation method for a vehicle suspension system according to Embodiment 2 of the present invention. Before obtaining the first vibration value detected at the second position point when the first position point in the suspension system vibrates in step S101, the following steps may also be included:

[0041] Step S301: Obtain the subjective evaluation results of the vehicle, and determine the frequency band to be optimized based on the subjective evaluation results.

[0042] Step S302: If the frequency band to be optimized meets the preset first condition, then obtain the first vibration value and determine the first transmission curve based on the first vibration value.

[0043] In this embodiment, the subjective evaluation result can refer to the user's evaluation of the vehicle in actual vehicle use scenarios, the frequency band to be optimized can refer to the problem frequency band corresponding to the NVH problem point in the subjective evaluation result, and the preset first condition can refer to the narrow frequency band where the improvement effect of the power vibration absorber is relatively obvious.

[0044] Specifically, before obtaining the first vibration value detected at the second position point when the first position point in the suspension system vibrates, the subjective evaluation results of the user on the vehicle in actual driving scenarios are obtained. If there are NVH problem points in the subjective evaluation results, the frequency band to be optimized corresponding to the NVH problem points is further tested. According to the working principle of the dynamic vibration absorber, it is detected whether the frequency band to be optimized meets the preset first condition, that is, whether the frequency band to be optimized is a narrow frequency band with a relatively obvious improvement effect of the dynamic vibration absorber. If the frequency band to be optimized meets the preset first condition, it means that the installation of the dynamic vibration absorber on the vehicle has an improvement effect on the NVH problem points in the subjective evaluation results. Then, it is detected whether the NVH problem points are related to the suspension system. The first vibration value detected at the second position point when the first position point in the suspension system vibrates is obtained. Based on the first vibration value, the first transmission curve is determined to determine whether the installation of the dynamic vibration absorber on the vehicle suspension system has an improvement effect on the NVH problem points in the subjective evaluation results.

[0045] For example, such as Figure 4 The image shown is a spectrum analysis diagram of in-vehicle sound provided in Embodiment 2 of the present invention. Figure 4 As shown, if the problem identified based on subjective evaluation is noise inside the vehicle, filtering and playback of the in-vehicle sound reveals that the frequency band to be optimized is 575Hz–625Hz. The energy distribution of this frequency band is as follows: Figure 4 The area shown in the rectangular box. If, based on the contents of steps S301 and S302 above, it is determined that the frequency band to be optimized, 575Hz to 625Hz, meets the preset first condition, it can be concluded that installing a dynamic vibration absorber on the vehicle has an effect on improving in-vehicle noise. Then, it can be further determined whether the in-vehicle noise is related to the suspension system.

[0046] like Figure 5 The image shows a spectral analysis diagram of the vibration of a suspension system according to Embodiment 2 of the present invention. Based on the frequency band to be optimized (572Hz–625Hz) corresponding to in-vehicle noise, the following parameters are determined: Figure 5 The rectangular area shown in the figure represents the energy distribution of the frequency band 572Hz to 625Hz to be optimized in the suspension system. Figure 4 The energy distribution in the region shown by the rectangle is similar to Figure 5 By comparing the energy distribution in the area shown in the rectangular box, it can be determined that the energy distribution in the two rectangular boxes is quite similar. It can be determined that the noise inside the vehicle is related to the suspension system. Then, when the first position point vibrates in the suspension system, the first vibration value detected at the second position point can be obtained. Based on the first vibration value, the first transmission curve is determined to determine whether installing a dynamic vibration absorber on the suspension system has an effect on improving the noise inside the vehicle.

[0047] In this embodiment, based on a preset first condition determined by the working principle of the dynamic vibration absorber, the frequency band corresponding to the NVH problem points in the user's subjective evaluation results in actual vehicle use scenarios is detected. If the frequency band to be optimized is a narrow frequency band where the improvement effect of the dynamic vibration absorber is relatively obvious, a first vibration value is obtained, and a first transmission curve is determined based on the first vibration value. By specifically judging the frequency band to be optimized corresponding to the NVH problem points in the subjective evaluation results and the preset first condition, the necessity of installing a vibration absorber in the vehicle is determined at the vehicle level, providing a basis for deciding whether to install a dynamic vibration absorber and avoiding the waste of resources or performance defects caused by blindly installing a dynamic vibration absorber in the vehicle.

[0048] like Figure 6 The diagram shown is a flowchart illustrating a vibration absorption evaluation method for a vehicle suspension system according to Embodiment 3 of the present invention. After determining the first transmission curve based on the first vibration value in step S101 above, the method may further include the following steps:

[0049] Step S601: Determine the frequency band corresponding to the peak value in the first transmission curve.

[0050] Step S602: Compare the frequency band corresponding to the peak value with the frequency band to be optimized to obtain the comparison result.

[0051] Step S603: If the comparison result meets the preset second condition, then adjust the center frequency band of the dynamic vibration absorber according to the frequency band corresponding to the peak value and the frequency band to be optimized.

[0052] In this embodiment, the transmission curve can represent the characteristic curve of the amplification or attenuation of the vibration acceleration transmitted from the first position point to the second position point at a specific vibration frequency. Its horizontal axis can represent the frequency, and the vertical axis can represent the ratio of vibration to force at the corresponding frequency. The peak value can refer to the maximum value of the ratio of vibration to force reached by the first transmission curve. The frequency band corresponding to the peak value can refer to the frequency band where the vibration response is most significant. The comparison result can refer to the overlap rate between the frequency band corresponding to the peak value and the frequency band to be optimized. The preset second condition can refer to the overlap rate value that the frequency band corresponding to the peak value and the frequency band to be optimized should reach when the installation of the dynamic vibration absorber on the suspension system has an improvement effect on the NVH problem points in the subjective evaluation results. The center frequency band can refer to the operating frequency band of the dynamic vibration absorber, that is, the vibration in the frequency range that the dynamic vibration absorber wants to reduce.

[0053] Specifically, after determining the first transmission curve, the peak value in the first transmission curve is determined, and the frequency band corresponding to the peak value is determined. The frequency range covered by the frequency band corresponding to the peak value is compared with the frequency range covered by the frequency band to be optimized to obtain the comparison result. If the comparison result meets the preset second condition, it indicates that installing a dynamic vibration absorber on the suspension system has an improvement effect on the NVH problem points in the subjective evaluation results. Then, the center frequency band of the dynamic vibration absorber is adjusted to the frequency band corresponding to the peak value or the frequency band to be optimized to obtain the adjusted dynamic vibration absorber. The adjusted dynamic vibration absorber is installed on the suspension system. After installing the dynamic vibration absorber on the suspension system, the second transmission curve is determined. Based on the first transmission curve and the second transmission curve, the vibration absorption effect of the suspension system is evaluated to obtain the evaluation result, so as to further determine the specific improvement effect of installing a dynamic vibration absorber on the suspension system on the NVH problem points in the subjective evaluation results.

[0054] In this embodiment, the frequency band corresponding to the peak value in the first transmission curve between the first and second positions of the suspension system is compared with the frequency band to be optimized corresponding to the NVH problem points in the subjective evaluation results. If the overlap rate between the frequency band corresponding to the peak value and the frequency band to be optimized meets a preset second condition, the center frequency band of the dynamic vibration absorber is adjusted according to the frequency band corresponding to the peak value and the frequency band to be optimized. By specifically judging the necessity of installing a dynamic vibration absorber in the suspension system from the perspective of the suspension system based on the frequency band corresponding to the peak value, the frequency band to be optimized, and the preset second condition, a basis is provided for deciding whether to install a dynamic vibration absorber in the suspension system. This avoids the waste of resources or performance defects caused by blindly installing a dynamic vibration absorber in the suspension system. Specifically, the design of the center frequency band of the dynamic vibration absorber is guided by the first transmission curve between the two points of the suspension system obtained from the test, improving the matching between the operating frequency band of the dynamic vibration absorber and the problem frequency band inside the vehicle, thereby improving the accuracy of determining the center frequency band of the dynamic vibration absorber. This effectively solves the NVH problem in the subjective evaluation results and improves the vibration absorption effect of the suspension system and the overall NVH performance of the vehicle.

[0055] like Figure 7 The diagram shown is a flowchart illustrating a vibration absorption evaluation method for a vehicle suspension system according to Embodiment 4 of the present invention. Step S103 above, which evaluates the vibration absorption effect of the suspension system based on the first and second transmission curves to obtain the evaluation result, may include the following steps:

[0056] Step S701: Determine the first center curve corresponding to the center frequency band in the first transfer curve, and determine the second center curve corresponding to the center frequency band in the second transfer curve.

[0057] Step S702: Evaluate the vibration absorption effect of the suspension system based on the first center curve and the second center curve, and obtain the evaluation results.

[0058] In this embodiment, the first center curve may refer to the curve corresponding to the center frequency band in the first transmission curve, and the second center curve may refer to the curve corresponding to the center frequency band in the second transmission curve.

[0059] Specifically, the curve corresponding to the center frequency band in the first transmission curve is taken as the first center curve, and the curve corresponding to the center frequency band in the second transmission curve is taken as the second center curve. The change in the ratio of vibration to force on the vertical axis of the first center curve and the second center curve is compared, and the evaluation result is determined based on the change. For example, if the change in the ratio of vibration to force on the vertical axis of the first center curve and the second center curve is larger, then the dynamic vibration absorber is determined to have a better vibration absorption effect on improving the suspension system.

[0060] For example, such as Figure 8 The diagram shown illustrates the vibration absorption effect of the suspension system after installing a dynamic vibration absorber, as provided in Embodiment 4 of the present invention. If the problem identified by the subjective evaluation result is noise inside the vehicle, and the corresponding frequency band to be optimized is 575Hz~625Hz, then it can correspond to… Figure 4 The spectral analysis diagrams of the in-vehicle sound shown are compared and analyzed, such as... Figure 4 As shown, before the installation of the dynamic vibration absorber in the suspension system, the energy distribution in the frequency band to be optimized (575Hz–625Hz) is as follows: Figure 4 The area shown in the middle rectangle, as Figure 8 As shown, after installing a dynamic vibration absorber in the suspension system, the energy distribution corresponding to the frequency band to be optimized, 575Hz~625Hz, is as follows: Figure 8 The area shown in the middle rectangle will Figure 4 The energy distribution in the region shown by the rectangle is similar to Figure 8 By comparing the energy distribution in the area shown in the middle rectangle, it can be determined that... Figure 8 The energy of the region shown in the middle rectangle is lower than Figure 4 The energy in the area shown in the rectangular box can determine whether installing a dynamic vibration absorber in the suspension system has a noise-reducing effect on the vehicle interior, and the specific extent of the improvement.

[0061] In this embodiment, after installing a dynamic vibration absorber in the suspension system, the vibration absorption effect of the suspension system is evaluated based on the first center curve and the second center curve corresponding to the center frequency band. This determines the vibration absorption effect of the suspension system after installing the dynamic vibration absorber, improves the accuracy of the evaluation results, and provides a basis for subsequent comprehensive decision-making on whether to implement the installation of a dynamic vibration absorber in the suspension system, taking into account the cost of the dynamic vibration absorber.

[0062] like Figure 9As shown, this is a vibration absorption evaluation device for a vehicle suspension system provided in Embodiment 5 of the present invention. This vibration absorption evaluation device for a vehicle suspension system corresponds one-to-one with the vibration absorption evaluation method for the vehicle suspension system in the above embodiments. The vibration absorption evaluation device for a vehicle suspension system includes a first experimental module 91, a second experimental module 92, and a first evaluation module 93. Detailed descriptions of each functional module are as follows:

[0063] The first experimental module 91 is used to obtain a first vibration value detected at a second position point when a first position point in the suspension system is vibrated before the dynamic vibration absorber is installed in the suspension system, and to determine a first transmission curve based on the first vibration value.

[0064] The second experimental module 92 is used to obtain the second vibration value detected at the second position point when the first position point is vibrated after the dynamic vibration absorber is installed in the suspension system, and to determine the second transmission curve based on the second vibration value.

[0065] The first evaluation module 93 is used to evaluate the vibration absorption effect of the suspension system based on the first transmission curve and the second transmission curve, and obtain the evaluation result.

[0066] Optionally, the vibration absorption evaluation device further includes:

[0067] The acquisition module is used to acquire the subjective evaluation results of the vehicle and determine the frequency band to be optimized based on the subjective evaluation results;

[0068] The second evaluation module is used to acquire the first vibration value and determine the first transmission curve based on the first vibration value if the frequency band to be optimized meets a preset first condition. Optionally, the vibration absorption evaluation device further includes:

[0069] The first determining module is used to determine the frequency band corresponding to the peak value in the first transmission curve;

[0070] The comparison module is used to compare the frequency band corresponding to the peak value with the frequency band to be optimized, and obtain the comparison result;

[0071] The third evaluation module is used to adjust and evaluate the center frequency band of the dynamic vibration absorber based on the frequency band corresponding to the peak value and the frequency band to be optimized if the comparison result meets the preset second condition.

[0072] Optionally, the first evaluation module 93 mentioned above includes:

[0073] The second determining module is used to determine the first center curve corresponding to the center frequency band in the first transmission curve, and to determine the second center curve corresponding to the center frequency band in the second transmission curve.

[0074] The fourth evaluation module is used to evaluate the vibration absorption effect of the suspension system based on the first center curve and the second center curve, and obtain the evaluation result.

[0075] Optionally, the vibration absorption evaluation device further includes:

[0076] The excitation module is used to vibrate the first position point by arranging a vibration excitation device at the first position point.

[0077] Optionally, the vibration absorption evaluation device further includes:

[0078] The response module is used to detect the first vibration value and the second vibration value by arranging a triaxial sensor at the second location point.

[0079] Optionally, the vibration absorption evaluation device further includes:

[0080] The decision module is used to decide whether to install the dynamic vibration absorber on the suspension system based on the evaluation results and preset cost conditions.

[0081] Specific limitations regarding the vibration absorption assessment device for vehicle mounting systems can be found in the limitations of the vibration absorption assessment method for vehicle mounting systems described above, and will not be repeated here. Each module in the aforementioned vibration absorption assessment device for vehicle mounting systems can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0082] Figure 10 This is a schematic diagram of the structure of a computer device provided in Embodiment Six of the present invention. Figure 10 As shown, the computer device of this embodiment includes: at least one processor ( Figure 10 Only one is shown in the diagram), a memory, and a computer program stored in the memory and capable of running on at least one processor, which, when executing the computer program, implements the steps in the embodiments of the vibration absorption evaluation methods for any of the vehicle suspension systems described above.

[0083] This computer device may include, but is not limited to, a processor and memory. Those skilled in the art will understand that... Figure 10 The examples of computer devices are merely examples and do not constitute a limitation on computer devices. Computer devices may include more or fewer components than shown in the illustration, or combinations of certain components, or different components, such as network interfaces, displays, and input devices.

[0084] The processor referred to can be a CPU, but it can also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0085] Memory includes readable storage media, internal memory, etc., wherein internal memory can be the RAM of a computer device, providing an environment for the operation of the operating system and computer-readable instructions stored in the readable storage media. The readable storage media can be the hard drive of a computer device, or in other embodiments, it can be an external storage device of the computer device, such as a plug-in hard drive, Smart Media Card (SMC), Secure Digital (SD) card, or Flash Card. Furthermore, memory can include both internal storage units and external storage devices of a computer device. Memory is used to store the operating system, applications, bootloader, data, and other programs, such as program code for computer programs. Memory can also be used to temporarily store data that has been output or will be output.

[0086] Those skilled in the art will understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the functions described above can be assigned to 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. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this invention. The specific working process of the units and modules in the above device can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention can implement all or part of the processes in the methods of the above embodiments by instructing related hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the above method embodiments. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. A computer-readable medium can include at least: any entity or device capable of carrying computer program code, a recording medium, a computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signals, telecommunication signals, and software distribution media. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0087] The present invention can implement all or part of the processes in the methods of the above embodiments, or it can be accomplished by a computer program product. When the computer program product is run on a computer device, the computer device executes the steps in the above method embodiments.

[0088] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0089] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0090] In the embodiments provided by this invention, it should be understood that the disclosed apparatus / computer devices and methods can be implemented in other ways. For example, the apparatus / computer device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0091] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0092] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A method for evaluating the vibration absorption of a vehicle suspension system, characterized in that, The vibration absorption assessment method includes the following steps: Before installing the dynamic vibration absorber in the suspension system, a first vibration value detected at a second position point is obtained when a first position point in the suspension system vibrates, and a first transmission curve is determined based on the first vibration value; After the dynamic vibration absorber is installed in the suspension system, the second vibration value detected at the second position point is obtained when the first position point is vibrated, and the second transmission curve is determined based on the second vibration value; The vibration absorption effect of the suspension system is evaluated based on the first transmission curve and the second transmission curve, and the evaluation result is obtained. Before acquiring the first vibration value detected at the second position point when the first position point in the suspension system vibrates, the method further includes: Obtain the subjective evaluation results of the vehicle, and determine the frequency band to be optimized based on the subjective evaluation results; If the frequency band to be optimized meets the preset first condition, then the first vibration value is obtained, and the first transmission curve is determined based on the first vibration value. After determining the first transmission curve based on the first vibration value, the method further includes: Determine the frequency band corresponding to the peak value in the first transmission curve; The frequency band corresponding to the peak value and the frequency band to be optimized are compared to obtain the comparison result; If the comparison result meets the preset second condition, the center frequency band of the dynamic vibration absorber is adjusted according to the frequency band corresponding to the peak value and the frequency band to be optimized.

2. The vibration absorption evaluation method for a vehicle suspension system as described in claim 1, characterized in that, The evaluation of the vibration absorption effect of the suspension system based on the first transmission curve and the second transmission curve, and the resulting evaluation, include: Determine the first center curve corresponding to the center frequency band in the first transmission curve, and determine the second center curve corresponding to the center frequency band in the second transmission curve; The vibration absorption effect of the suspension system is evaluated based on the first center curve and the second center curve, and the evaluation result is obtained.

3. The vibration absorption evaluation method for a vehicle suspension system as described in claim 1, characterized in that, The vibration absorption assessment method also includes: By arranging a vibration excitation device at the first location point, the vibration excitation device is used to vibrate the first location point.

4. The vibration absorption evaluation method for a vehicle suspension system as described in claim 1, characterized in that, The vibration absorption assessment method also includes: By arranging a triaxial sensor at the second location point, the first vibration value and the second vibration value are detected using the triaxial sensor.

5. The vibration absorption evaluation method for a vehicle suspension system as described in claim 1, characterized in that, After obtaining the evaluation results, the following is also included: Based on the evaluation results and the preset cost conditions, a decision is made on whether to install the dynamic vibration absorber on the suspension system.

6. A vibration absorption evaluation device for a vehicle suspension system, characterized in that, The vibration absorption evaluation device includes: The first experimental module is used to obtain a first vibration value detected at a second position point when a first position point in the suspension system is vibrated before the dynamic vibration absorber is installed in the suspension system, and to determine a first transmission curve based on the first vibration value. The second experimental module is used to obtain the second vibration value detected at the second position point when the first position point is vibrated after the dynamic vibration absorber is installed in the suspension system, and to determine the second transmission curve based on the second vibration value. The first evaluation module is used to evaluate the vibration absorption effect of the suspension system based on the first transmission curve and the second transmission curve, and obtain the evaluation result. The vibration absorption assessment device further includes: The acquisition module is used to acquire the subjective evaluation results of the vehicle and determine the frequency band to be optimized based on the subjective evaluation results; The second evaluation module is used to obtain the first vibration value and determine the first transmission curve based on the first vibration value if the frequency band to be optimized meets the preset first condition. The vibration absorption assessment device further includes: The first determining module is used to determine the frequency band corresponding to the peak value in the first transmission curve; The comparison module is used to compare the frequency band corresponding to the peak value with the frequency band to be optimized, and obtain the comparison result; The third evaluation module is used to adjust and evaluate the center frequency band of the dynamic vibration absorber based on the frequency band corresponding to the peak value and the frequency band to be optimized if the comparison result meets the preset second condition.

7. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the vibration absorption evaluation method for the vehicle suspension system as described in any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the vibration absorption evaluation method for the vehicle suspension system as described in any one of claims 1 to 5.

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