A detection method and system for abnormal noise of a hydraulic mount

Abstract

The present invention relates to a method and system for detecting abnormal noise of a hydraulic mount. The detection method is as follows: based on a target vehicle driving at low speed on an uneven road, the vehicle interior noise and the first vibration acceleration of the hydraulic mount active and passive ends are obtained; based on the vehicle interior noise and the first vibration acceleration, the correlation between the vehicle interior noise and the hydraulic mount vibration is preliminarily determined; when it is determined that the vehicle interior noise is related to the hydraulic mount vibration, the displacement difference between the active and passive ends is obtained based on the first vibration acceleration of the hydraulic mount active and passive ends; based on the suspension dynamic stiffness test bench and the displacement difference between the active and passive ends, the test force load and the second vibration acceleration of the hydraulic mount passive end are obtained; the test force load and the second vibration acceleration of the hydraulic mount passive end are Fourier transformed and high-pass filtered to obtain the force load, and the hydraulic mount abnormal noise problem is determined based on the force load. The present invention also provides a detection system for abnormal noise of a hydraulic mount. The present invention realizes the accurate detection of abnormal noise of a hydraulic mount.

Description

Technical Field

[0001] The present invention relates to the technical field of suspension, and in particular to a method and system for detecting abnormal noise of a hydraulic suspension. Background Art

[0002] Hydraulic mount noise refers to the "clacking" noise generated by the movement of the decoupling membrane and runner cover within the hydraulic mount flow channel assembly when a vehicle travels over uneven surfaces such as speed bumps at low speeds (20-30 km / h). This noise is transmitted into the vehicle interior through the mount housing. At low speeds, road and engine noise are relatively low, making hydraulic mount noise more noticeable to users and leading to complaints from drivers and passengers. This is a common problem in suspension development. Hydraulic mount noise has a low amplitude (typically less than 50dB(A)) and a short duration (typically just two to three brief noises). Traditional in-vehicle noise testing and analysis methods (such as those for powertrain and road noise) are not suitable for this type of noise. Furthermore, hydraulic mounts are often located near the powertrain and suspension systems, and the interplay of these complex components can easily cause similar noise issues. This makes hydraulic mount noise difficult to accurately test and identify, making optimization and correction time-consuming and labor-intensive. The industry generally discovers problems through subjective evaluation, and then confirms the problem and investigates the cause by releasing the liquid from the hydraulic mount, wrapping the mount shell with lead, etc. After determining that the abnormal noise is caused by the hydraulic mount, the internal structure of the mount is optimized. This is not only time-consuming and labor-intensive, but also may result in inaccurate investigations.

[0003] CN 202040258 U discloses a noise-proof decoupling diaphragm, a decoupling hydraulic mount, and a vehicle, as well as CN 207683315 U discloses a novel hydraulic mount decoupling diaphragm and a hydraulic mount. Both of these propose design methods and structures for preventing abnormal noise from hydraulic mounts from the perspective of optimizing the internal structure of the hydraulic mount. However, there has been no report on how to quickly test and identify abnormal noise from hydraulic mounts for whole vehicle and bench testing. Summary of the Invention

[0004] The object of the present invention is to provide a method and system for detecting abnormal noise of a hydraulic mount, so as to achieve accurate detection of abnormal noise of the hydraulic mount, thereby providing a reliability reference for structural optimization of the hydraulic mount.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A method for detecting abnormal noise of a hydraulic mount comprises the following steps:

[0007] Based on the target vehicle running at low speed on an uneven road, the interior noise of the target vehicle and the first vibration accelerations of the active and passive ends of the hydraulic mount are obtained;

[0008] Preliminarily determining the correlation between the interior noise and the hydraulic mount vibration based on the interior noise and the first vibration acceleration of the hydraulic mount passive end;

[0009] When it is preliminarily determined that the vehicle interior noise is related to the hydraulic mount vibration, obtaining the displacement difference between the active end and the passive end of the hydraulic mount according to the first vibration accelerations of the active and passive ends of the hydraulic mount;

[0010] Based on the suspension dynamic stiffness test bench and the displacement difference between the active end and the passive end of the hydraulic mount, the test force load and the second vibration acceleration of the passive end of the hydraulic mount are obtained;

[0011] The test force load and the second vibration acceleration of the passive end of the hydraulic mount are processed by Fourier transform and high-pass filtering to obtain the force load, and the abnormal noise problem of the hydraulic mount is judged based on the force load.

[0012] Among them, low-speed driving refers to a driving speed between 20 and 30 kilometers per hour.

[0013] Preferably, it includes a hydraulic suspension abnormal noise test system, which includes a noise sensor for obtaining the noise inside the target vehicle, a first acceleration sensor for obtaining the first vibration acceleration of the active and passive ends of the hydraulic suspension of the target vehicle, a data acquisition module and a computer, the noise sensor and the first acceleration sensor are connected to the data acquisition module, and the data acquisition module is connected to the computer.

[0014] Preferably, the noise sensor is arranged on the driver's seat near the right ear;

[0015] A first acceleration sensor is disposed at each of the active end and the passive end of the hydraulic mount.

[0016] Among them, the active end of the hydraulic mount refers to the active side, which refers to the side connected to the engine, and the passive end refers to the passive side, which refers to the side connected to the vehicle body.

[0017] Preferably, judging the correlation between the interior noise and the hydraulic mount vibration according to the interior noise and the first vibration acceleration of the passive end of the hydraulic mount specifically includes:

[0018] In the time period corresponding to the third and fourth peaks of the first vibration acceleration of the passive end of the hydraulic mount, it is determined whether there are corresponding peaks in the interior noise. If there are corresponding peaks in the interior noise, it is preliminarily determined that the interior noise is related to the hydraulic mount vibration.

[0019] Preferably, when it is preliminarily determined that the vehicle interior noise is related to the hydraulic mount vibration, obtaining the displacement difference between the active end and the passive end of the hydraulic mount according to the first vibration acceleration of the active and passive ends of the hydraulic mount specifically includes:

[0020] When it is preliminarily determined that the interior noise is related to the hydraulic mount vibration, the first vibration acceleration of the active and passive ends of the hydraulic mount are integrated twice to obtain the displacement of the active and passive ends of the hydraulic mount respectively;

[0021] According to the displacements of the active end and the passive end of the hydraulic mount, the displacement difference between the active end and the passive end of the hydraulic mount is obtained.

[0022] Preferably, it includes a hydraulic suspension bench abnormal noise test system, which includes the suspension dynamic stiffness test bench, two suspension mounting brackets for fixing the hydraulic suspension, a second acceleration sensor, a data acquisition module and a computer, wherein one of the suspension mounting brackets is fixedly connected to the load sensor on the suspension dynamic stiffness test bench, and the other suspension mounting bracket is fixedly connected to the displacement sensor on the suspension dynamic stiffness test bench, the load sensor and the second acceleration sensor are connected to the data acquisition module, and the data acquisition module is connected to the computer.

[0023] Preferably, the second acceleration sensor is arranged at a position close to the excitation shaft at the passive end of the hydraulic mount.

[0024] Preferably, based on the displacement difference between the suspension dynamic stiffness test bench and the active and passive ends of the hydraulic mount, obtaining the test force load on the suspension dynamic stiffness test bench and the second vibration acceleration of the passive end of the hydraulic mount specifically includes:

[0025] The hydraulic mount is fixed on the suspension dynamic stiffness test bench through the suspension mounting bracket. The displacement difference between the active and passive ends of the hydraulic mount is used as the test amplitude to excite the hydraulic mount. The test force load and the second vibration acceleration of the passive end of the hydraulic mount are obtained by the load sensor and the second acceleration sensor respectively.

[0026] Preferably, Fourier transform and high-pass filtering are performed on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to obtain the force load, and the abnormal noise problem of the hydraulic mount is determined according to the force load, specifically including:

[0027] Perform Fourier transform on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to convert the time domain data into frequency domain data;

[0028] The frequency domain data is processed by high-pass filtering to obtain the force load;

[0029] The abnormal noise problem of the hydraulic mount is judged based on the force load. When the maximum force load obtained exceeds 40N, it is determined that the hydraulic mount has an abnormal noise problem.

[0030] The present invention also provides a hydraulic mount abnormal noise detection system, comprising the following steps:

[0031] A first acquisition module is configured to acquire the interior noise of the target vehicle and first vibration accelerations of the active and passive ends of the hydraulic mount based on the target vehicle traveling at a low speed on an uneven road surface;

[0032] a judgment module, configured to preliminarily judge the correlation between the interior noise and the hydraulic mount vibration based on the interior noise and the first vibration acceleration of the passive end of the hydraulic mount;

[0033] a first obtaining module, configured to obtain a displacement difference between an active end and a passive end of the hydraulic mount according to first vibration accelerations of the active and passive ends of the hydraulic mount when it is preliminarily determined that the vehicle interior noise is related to the hydraulic mount vibration;

[0034] A second acquisition module is used to obtain a test force load and a second vibration acceleration of the passive end of the hydraulic mount based on the suspension dynamic stiffness test bench and the displacement difference between the active end and the passive end of the hydraulic mount;

[0035] The second acquisition module is used to perform Fourier transform and high-pass filtering on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to obtain the force load, and judge the abnormal noise problem of the hydraulic mount according to the force load.

[0036] Beneficial effects of the present invention:

[0037] The detection method and system of abnormal noise of hydraulic mount of the present invention firstly detects the noise inside the vehicle and the vibration of the hydraulic mount shell in the whole vehicle state, and preliminarily determines the correlation between the abnormal noise inside the vehicle and the vibration of the shell; then uses the displacement difference between the active and passive ends of the hydraulic mount as the test amplitude corresponding to the abnormal noise problem; then installs the hydraulic mount on the suspension dynamic stiffness test bench, and performs an excitation test on the hydraulic mount with the test amplitude, and performs Fourier transform and high-frequency filtering on the test results to obtain dynamic force; judges whether the hydraulic mount has abnormal noise by judging whether the maximum dynamic force load is greater than the set value. The detection method of the present invention is based on the actual state of the whole vehicle and combines with the test bench for precise testing, which effectively ensures the accuracy of the abnormal noise detection of the hydraulic mount and provides a reliable basis for the optimization of the internal structure of the hydraulic mount. The detection method has the advantages of simple operation, easy implementation and low cost, and has promotion and application value in the field of automobile suspension technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a flow chart of the method for detecting abnormal noise of a hydraulic mount according to the present invention;

[0039] Figure 2 Schematic diagram of the structure of the hydraulic mount abnormal noise testing system of the present invention;

[0040] Figure 3 It is a structural schematic diagram of the abnormal noise testing system of the hydraulic mount bench of the present invention;

[0041] Among them, 1-noise sensor, 2-hydraulic mount, 21-active end, 22-passive end, 3-first acceleration sensor, 4-data acquisition module, 5-computer, 6-driver seat, 7-suspension dynamic stiffness test bench MTS831, 71-load sensor, 72-displacement sensor, 73-control system, 8-suspension mounting bracket, 9-second acceleration sensor. DETAILED DESCRIPTION

[0042] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0043] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0044] Example 1

[0045] like Figure 1 As shown, a method for detecting abnormal noise of a hydraulic mount includes the following steps:

[0046] S1. Acquiring the interior noise of the target vehicle and the first vibration accelerations of the active and passive ends of the hydraulic mount based on the target vehicle traveling at a low speed on an uneven road, specifically including:

[0047] S11. Establish a hydraulic suspension abnormal noise test system, such as Figure 2 As shown, the hydraulic mount abnormal noise test system includes a noise sensor 1 for acquiring the interior noise of the target vehicle, a first acceleration sensor 3 for acquiring the first vibration acceleration of the active end 21 and the passive end 22 of the hydraulic mount 2 of the target vehicle, a data acquisition module 4, and a computer 5. The noise sensor 1 and the first acceleration sensor 3 are connected to the data acquisition module 4, and the data acquisition module 4 is connected to the computer 5. The noise sensor 1 is arranged near the right ear on the driver's seat 6; a first acceleration sensor 3 is each arranged at the active end 21 and the passive end 22 of the hydraulic mount 2.

[0048] S12, driving the target vehicle at a low speed of 20 to 30 km / h on an uneven road surface such as a speed bump, obtaining an interior noise signal using the noise sensor 1, and simultaneously obtaining first vibration acceleration signals from the active end 21 and the passive end 22 of the hydraulic mount 2 using the two first acceleration sensors 3;

[0049] S2. Preliminarily determining the correlation between the interior noise and the hydraulic mount vibration based on the interior noise and the first vibration acceleration of the passive end 22 of the hydraulic mount 2, specifically including:

[0050] By obtaining the first vibration acceleration of the passive end 22 of the hydraulic mount 2, it is determined whether there are corresponding peaks in the vehicle interior noise during the time periods corresponding to the third and fourth peaks of the first vibration acceleration of the passive end 22 of the hydraulic mount 2. If there are corresponding peaks in the vehicle interior noise, it is preliminarily determined that the vehicle interior noise is related to the hydraulic mount vibration.

[0051] S3. When it is preliminarily determined that the vehicle interior noise is related to the vibration of the hydraulic mount, the displacement difference between the active end 21 and the passive end 22 of the hydraulic mount 2 is obtained based on the first vibration accelerations of the active end 21 and the passive end 22 of the hydraulic mount 2, specifically including:

[0052] S31. When it is preliminarily determined that the vehicle interior noise is related to the vibration of the hydraulic mount 2, the first vibration accelerations of the active end 21 and the passive end 22 of the hydraulic mount 2 are respectively integrated twice to obtain the displacements of the active end 21 and the passive end 22 of the hydraulic mount 2;

[0053] S32, obtaining a displacement difference PPd between the active end 21 and the passive end 22 of the hydraulic mount 2 according to the displacements of the active end 21 and the passive end 22 of the hydraulic mount 2;

[0054] S4. Based on the mount dynamic stiffness test bench and the displacement difference PPd between the active and passive ends of the hydraulic mount, obtain the test force load and the second vibration acceleration of the passive end of the hydraulic mount, specifically including:

[0055] S41. Establish a hydraulic suspension test bench abnormal noise test system, such as Figure 3As shown, the hydraulic mount test bench abnormal noise test system includes a suspension dynamic stiffness test bench MTS831 7, two suspension mounting brackets 8 for fixing the hydraulic mount 2, a second acceleration sensor 9, a data acquisition module 4 and a computer 5, wherein one suspension mounting bracket 8 is fixedly connected to the load sensor 71 on the suspension dynamic stiffness test bench MTS831 7, and the other suspension mounting bracket 8 is fixedly connected to the displacement sensor 72 on the suspension dynamic stiffness test bench MTS831 7. The load sensor 71 and the displacement sensor 72, the suspension dynamic stiffness test bench MTS831 The control system 73 of 7 is connected to the data acquisition module 4, and the data acquisition module 4 is connected to the computer 5; wherein, the second acceleration sensor 9 is arranged at a position close to the excitation axis at the passive end 22 of the hydraulic mount 2; the suspension dynamic stiffness test bench MTS831 refers to the suspension and other elastic body testing system with model 831 produced by MTS, including a test bench and its supporting test control program software. The control program software includes a Fourier transform function and a high-pass filter function function. Therefore, when Fourier transforming the test force load and the second vibration acceleration of the passive end of the hydraulic mount, clicking the Fourier transform function function can realize the conversion from time domain data to frequency domain data. When high-pass filtering the frequency domain data, clicking the high-pass filter function function and selecting the required frequency can obtain the corresponding force load;

[0056] S42. Start the control system of the computer 5 and the mount dynamic stiffness test bench MTS831 7. Set the excitation test amplitude value in the test program to the displacement difference PPd between the active and passive ends of the hydraulic mount to perform an excitation test on the hydraulic mount. The frequency is swept from 1 to 50 Hz, and the acquisition time is a minimum of 32 cycles. The test force load and the second vibration acceleration of the passive end 22 of the hydraulic mount 2 are obtained through the load sensor 71 and the second acceleration sensor 9, respectively.

[0057] S5. Perform Fourier transform and high-pass filtering on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to obtain the force load. Determine the abnormal noise problem of the hydraulic mount based on the force load, specifically including:

[0058] S51. In the MTS test bench system software corresponding to the suspension dynamic stiffness test bench MTS831, convert the test force load and the second vibration acceleration of the 7th to 25th cycles from time domain data to frequency domain data using the Fourier transform function.

[0059] S52, performing a 100 Hz high-pass filter on the frequency domain data using a high-pass filter function to obtain a force load;

[0060] S53: Hydraulic mount abnormal noise judgment: When the maximum force load exceeds 40N, it is judged that the hydraulic mount has an abnormal noise problem.

[0061] This enables R&D personnel to optimize the internal structure of the hydraulic mount based on the test results. This method and system provides an effective test and analysis basis for confirming abnormal noise of the hydraulic mount.

[0062] Example 2

[0063] A hydraulic mount abnormal noise detection system includes the following steps:

[0064] A first acquisition module is configured to acquire the interior noise of the target vehicle and first vibration accelerations of the active and passive ends of the hydraulic mount based on the target vehicle traveling at a low speed on an uneven road surface;

[0065] a judgment module, configured to preliminarily judge the correlation between the interior noise and the hydraulic mount vibration based on the interior noise and the first vibration acceleration of the passive end of the hydraulic mount;

[0066] a first obtaining module, configured to obtain a displacement difference between an active end and a passive end of the hydraulic mount according to first vibration accelerations of the active and passive ends of the hydraulic mount when it is preliminarily determined that the vehicle interior noise is related to the hydraulic mount vibration;

[0067] A second acquisition module is used to obtain a test force load and a second vibration acceleration of the passive end of the hydraulic mount based on the suspension dynamic stiffness test bench and the displacement difference between the active end and the passive end of the hydraulic mount;

[0068] The second acquisition module is used to perform Fourier transform and high-pass filtering on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to obtain the force load, and judge the abnormal noise problem of the hydraulic mount according to the force load.

[0069] In summary, the method and system for detecting abnormal noise of the hydraulic mount of the present invention firstly detects the interior noise and the vibration of the hydraulic mount shell in the whole vehicle state, and preliminarily determines the correlation between the abnormal noise in the vehicle and the shell vibration; then uses the displacement difference between the active and passive ends of the hydraulic mount as the test amplitude corresponding to the abnormal noise problem; then installs the hydraulic mount on a suspension dynamic stiffness test bench (such as MTS831), and performs an excitation test on the hydraulic mount with the test amplitude, and performs Fourier transform and high-frequency filtering on the test results to obtain dynamic force; and determines whether the hydraulic mount has abnormal noise by judging whether the maximum dynamic force load is greater than the set value. The detection method of the present invention is based on the actual state of the whole vehicle and is combined with the test bench for precise testing, which effectively ensures the accuracy of the abnormal noise detection of the hydraulic mount, provides a reliable basis for the optimization of the internal structure of the hydraulic mount, and has promotion and application value in the field of automobile suspension technology.

[0070] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A method for detecting abnormal noise of a hydraulic mount, characterized in that: The following steps are involved: Based on the target vehicle running at low speed on an uneven road, the interior noise of the target vehicle and the first vibration accelerations of the active and passive ends of the hydraulic mount are obtained; Preliminarily determining the correlation between the interior noise and the hydraulic mount vibration based on the interior noise and the first vibration acceleration of the passive end of the hydraulic mount, including: determining whether corresponding peaks of the interior noise exist in the time period corresponding to the third and fourth peaks of the first vibration acceleration of the passive end of the hydraulic mount, and if the corresponding peaks exist in the interior noise, preliminarily determining that the interior noise is correlated with the hydraulic mount vibration; When it is preliminarily determined that the vehicle interior noise is related to the hydraulic mount vibration, obtaining the displacement difference between the active end and the passive end of the hydraulic mount according to the first vibration accelerations of the active and passive ends of the hydraulic mount; Based on the displacement difference between the active and passive ends of the hydraulic mount and the suspension dynamic stiffness test bench, a test force load and a second vibration acceleration of the passive end of the hydraulic mount are obtained; the method includes: fixing the hydraulic mount on the suspension dynamic stiffness test bench via a suspension mounting bracket, performing an excitation test on the hydraulic mount using the displacement difference between the active and passive ends of the hydraulic mount as a test amplitude, and obtaining the test force load and the second vibration acceleration of the passive end of the hydraulic mount via a load sensor and a second acceleration sensor, respectively; Performing Fourier transform and high-pass filtering on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to obtain the force load, and judging the abnormal noise problem of the hydraulic mount based on the force load, including: performing Fourier transform on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to convert the time domain data into frequency domain data; performing high-pass filtering on the frequency domain data to obtain the force load; judging the abnormal noise problem of the hydraulic mount based on the force load, and when the maximum force load obtained exceeds 40N, it is judged that the hydraulic mount has an abnormal noise problem.

2. The detection method according to claim 1, wherein It includes a hydraulic mount abnormal noise test system, which includes a noise sensor for obtaining the noise inside the target vehicle, a first acceleration sensor for obtaining the first vibration acceleration of the active and passive ends of the hydraulic mount of the target vehicle, a data acquisition module and a computer. The noise sensor and the first acceleration sensor are connected to the data acquisition module, and the data acquisition module is connected to the computer.

3. The detection method according to claim 2, characterized in that The noise sensor is arranged on the driver's seat near the right ear; A first acceleration sensor is disposed at each of the active end and the passive end of the hydraulic mount.

4. The detection method according to claim 1, wherein When it is preliminarily determined that the vehicle interior noise is related to the hydraulic mount vibration, the displacement difference between the active end and the passive end of the hydraulic mount is obtained according to the first vibration acceleration of the active and passive ends of the hydraulic mount, specifically including: When it is preliminarily determined that the interior noise is related to the hydraulic mount vibration, the first vibration acceleration of the active and passive ends of the hydraulic mount are integrated twice to obtain the displacement of the active and passive ends of the hydraulic mount respectively; According to the displacements of the active end and the passive end of the hydraulic mount, the displacement difference between the active end and the passive end of the hydraulic mount is obtained.

5. The detection method according to claim 1, wherein It includes a hydraulic suspension bench abnormal noise test system, which includes the suspension dynamic stiffness test bench, two suspension mounting brackets for fixing the hydraulic suspension, a second acceleration sensor, a data acquisition module and a computer, wherein one suspension mounting bracket is fixedly connected to the load sensor on the suspension dynamic stiffness test bench, and the other suspension mounting bracket is fixedly connected to the displacement sensor on the suspension dynamic stiffness test bench, the load sensor and the second acceleration sensor are connected to the data acquisition module, and the data acquisition module is connected to the computer.

6. The detection method according to claim 5, characterized in that The second acceleration sensor is arranged at a position close to the excitation shaft at the passive end of the hydraulic mount.

7. A hydraulic mount abnormal noise detection system, characterized in that: The following steps are involved: A first acquisition module is configured to acquire the interior noise of the target vehicle and first vibration accelerations of the active and passive ends of the hydraulic mount based on the target vehicle traveling at a low speed on an uneven road surface; a judgment module, configured to preliminarily judge the correlation between the interior noise and the hydraulic mount vibration based on the interior noise and the first vibration acceleration of the passive end of the hydraulic mount; the judgment module comprising: judging whether corresponding peaks of the interior noise exist in the time period corresponding to the third and fourth peaks of the first vibration acceleration of the passive end of the hydraulic mount; if corresponding peaks exist in the interior noise, preliminarily judging that the interior noise is correlated with the hydraulic mount vibration; a first obtaining module, configured to obtain a displacement difference between an active end and a passive end of the hydraulic mount according to first vibration accelerations of the active and passive ends of the hydraulic mount when it is preliminarily determined that the vehicle interior noise is related to the hydraulic mount vibration; A second acquisition module is configured to acquire a test force load and a second vibration acceleration of the passive end of the hydraulic mount based on the suspension dynamic stiffness test bench and the displacement difference between the active end and the passive end of the hydraulic mount, comprising: fixing the hydraulic mount on the suspension dynamic stiffness test bench via a suspension mounting bracket, performing an excitation test on the hydraulic mount using the displacement difference between the active end and the passive end of the hydraulic mount as a test amplitude, and acquiring the test force load and the second vibration acceleration of the passive end of the hydraulic mount via a load sensor and a second acceleration sensor, respectively; The second acquisition module is used to perform Fourier transform and high-pass filtering on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to obtain the force load, and judge the abnormal noise problem of the hydraulic mount based on the force load, including: performing Fourier transform on the test force load and the second vibration acceleration of the passive end of the hydraulic mount to convert the time domain data into frequency domain data; performing high-pass filtering on the frequency domain data to obtain the force load; judging the abnormal noise problem of the hydraulic mount based on the force load, and when the maximum force load obtained exceeds 40N, it is determined that the hydraulic mount has an abnormal noise problem.

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