Automobile damping monitoring system and method

Abstract

The invention discloses an automobile vibration reduction monitoring system and method, and relates to the technical field of mechanical engineering, and the method comprises the steps: determining an automobile vibration reduction standard performance reference value and an automobile vibration reduction abnormal state critical value, collecting historical automobile vibration reduction driving state sensor data through an automobile vibration reduction sensor, and combining the data into an automobile vibration reduction performance data set; the method comprises the following steps: determining an automobile shock absorption comprehensive performance index by comprehensively analyzing performance data in an automobile shock absorption performance data set, analyzing an automobile shock absorption performance decline state based on the automobile shock absorption comprehensive performance index and an automobile shock absorption standard performance reference value, and determining an automobile shock absorption abnormal state critical value based on the automobile shock absorption performance decline state and the automobile shock absorption abnormal state critical value. And establishing a damping performance monitoring model, and when the automobile damping performance decline state is monitored to be close to the automobile damping abnormal state critical value, giving an abnormal alarm. The method has the advantages that the damping problem can be found in time, the abnormal alarm is provided, the monitoring efficiency and reliability are improved, and the automobile driving safety is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical engineering, and in particular to an automobile shock absorption monitoring system and method. Background Art

[0002] Automobile shock absorption is an important part of the vehicle suspension system, also known as shock absorber or shock absorber. Its main function is to reduce the vibration and bumps caused by uneven road surface during vehicle driving, and improve the driving stability, comfort and handling of the vehicle. Automobile shock absorbers absorb and slow down the energy generated by the vehicle suspension system due to road bumps, so as to keep the vehicle in a stable driving state, reduce the shaking of the vehicle body, provide passengers with a comfortable riding experience, and protect other parts of the vehicle from bumps and vibrations, thereby extending the service life of the vehicle.

[0003] The existing methods for monitoring automobile shock absorption mainly rely on manual inspection or subjective feelings of the driver. Existing methods often lack a clear quantitative evaluation system for shock absorption performance indicators and critical values ​​of abnormal conditions, and cannot provide quantitative monitoring results and alarm standards, which affects the accurate judgment of the shock absorption performance status. Traditional monitoring relies on experience accumulation, resulting in low monitoring efficiency and poor accuracy. Summary of the invention

[0004] In order to solve the above technical problems, a vehicle shock absorption monitoring system and method are provided. The technical solution solves the above-mentioned problems that the existing vehicle shock absorption monitoring main methods rely on manual inspection or subjective feelings of the driver, and the existing methods often lack a clear quantitative evaluation system for shock absorption performance indicators and critical values ​​of abnormal states, and cannot provide quantitative monitoring results and alarm standards, which affects the accurate judgment of the shock absorption performance status, makes traditional monitoring rely on experience accumulation, and leads to low monitoring efficiency and poor accuracy.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: A vehicle shock absorption monitoring method, comprising: Based on the factory status of the automobile shock absorption, determine the standard performance reference value of the automobile shock absorption and the critical value of the abnormal state of the automobile shock absorption; Through the automobile shock absorption sensor, historical automobile shock absorption driving state sensor data is collected and combined into an automobile shock absorption performance data set; Based on the automobile shock absorption performance data set, the comprehensive performance index of automobile shock absorption is determined by comprehensively analyzing the performance data in the automobile shock absorption performance data set; Analyze the decline state of automobile shock absorption performance based on comprehensive performance indicators of automobile shock absorption and standard performance reference values ​​of automobile shock absorption; Based on the degradation state of automobile shock absorption performance and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established. When the monitored automobile shock absorption performance degradation state is close to the critical value of automobile shock absorption abnormal state, an abnormal alarm is issued.

[0006] Preferably, based on the automobile shock absorption performance data set, by comprehensively analyzing the performance data in the automobile shock absorption performance data set, determining the automobile shock absorption comprehensive performance index specifically includes: Based on each element in the automobile shock absorption performance data set, data cleaning and standardization are performed to obtain a preprocessed automobile shock absorption performance data set; Based on the pre-processed automobile shock absorption performance data set, according to the time sequence, the shock absorption features in the pre-processed automobile shock absorption performance data set under the time sequence are screened and bound, and combined into an automobile shock absorption feature matrix A; ; in, is the automobile shock absorption characteristic matrix, is a number of shock absorption features j collected in the i-th time series, n is the sum of the number of time series, and m is the total amount of shock absorption features; Based on the characteristics corresponding to each time series in the automobile shock absorption characteristic matrix, several representative time series are selected, and the comprehensive performance index of automobile shock absorption under each time series is calculated using the comprehensive performance analysis formula; Among them, the comprehensive performance analysis formula is: ; Where P is the comprehensive performance index of automobile shock absorption at each time sequence, are the corresponding damping features j in the i-th time series, , , is the shock absorption feature weight corresponding to each time series.

[0007] Preferably, based on the comprehensive performance index of automobile shock absorption and the standard performance reference value of automobile shock absorption, analyzing the decline state of automobile shock absorption performance specifically includes: Determine the reference value of automobile shock absorption standard performance and comprehensive performance index of automobile shock absorption under several representative time series; Based on the reference value of automobile shock absorption standard performance and the comprehensive performance index of automobile shock absorption under several representative time series, the decline rate of the comprehensive performance index of automobile shock absorption under each time series is determined through the decline formula; The decay formula is: ; Where R is the decay rate of the comprehensive performance index of automobile shock absorption at each time series, It is the reference value of the standard performance of automobile shock absorption.

[0008] Preferably, based on the decline state of automobile shock absorption performance and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established. When the monitored automobile shock absorption performance decline state is close to the critical value of automobile shock absorption abnormal state, issuing an abnormal alarm specifically includes: Based on the decay rate of the comprehensive performance index of automobile shock absorption in each time series, the average decay rate of the comprehensive performance index of automobile shock absorption is calculated; Based on the average decay rate of the comprehensive performance index of automobile shock absorption, calculate the current comprehensive performance index of automobile shock absorption; Based on the current comprehensive performance index of automobile shock absorption and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established to determine whether the comprehensive performance index of automobile shock absorption under the average decay rate falls below the critical value of automobile shock absorption abnormal state. If not, continue monitoring. If so, alarm shock absorption abnormality. Among them, the shock absorption performance monitoring model is specifically as follows: ; In the formula, is the average decay rate of comprehensive performance indicators of automobile shock absorption, is the decay rate of comprehensive performance index of automobile shock absorption in the i-th time series, is the critical value of the abnormal state of automobile shock absorption, K is the total number of representative monitoring time series screened out, and i is the time series.

[0009] Furthermore, a vehicle shock absorption monitoring system is proposed, which is used to implement the above-mentioned vehicle shock absorption monitoring method, including: A reference data acquisition module, which is used to determine a reference value of a standard performance of automobile shock absorption and a critical value of an abnormal state of automobile shock absorption based on the factory state of automobile shock absorption; The shock absorption data collection module is used to collect historical automobile shock absorption driving state sensor data through automobile shock absorption sensors and combine them into an automobile shock absorption performance data set; A performance evaluation module, the performance evaluation module is electrically connected to the shock absorption data acquisition module, and the performance evaluation module is used to determine the comprehensive performance index of automobile shock absorption by comprehensively analyzing the performance data in the automobile shock absorption performance data set based on the automobile shock absorption performance data set; A performance degradation assessment module, the performance degradation assessment module is electrically connected to the performance assessment module and the benchmark data acquisition module, and the performance degradation assessment module is used to analyze the degradation state of the automobile shock absorption performance based on the comprehensive performance index of the automobile shock absorption and the standard performance reference value of the automobile shock absorption; The abnormal monitoring module is electrically connected to the benchmark data acquisition module of the performance degradation assessment module. The abnormal monitoring module is used to establish a shock absorption performance monitoring model based on the vehicle shock absorption performance degradation state and the critical value of the vehicle shock absorption abnormal state. When the monitored vehicle shock absorption performance degradation state is close to the critical value of the vehicle shock absorption abnormal state, an abnormal alarm is issued.

[0010] Optionally, the performance evaluation module includes: A data preprocessing unit performs data cleaning and standardization based on each element in the automobile shock absorption performance data set to obtain a preprocessed automobile shock absorption performance data set; The feature matrix unit, based on the pre-processed automobile shock absorption performance data set, screens and binds the shock absorption features in the pre-processed automobile shock absorption performance data set in the time sequence according to the time sequence, and combines them into an automobile shock absorption feature matrix A; The performance calculation unit selects a number of representative time series based on the characteristics corresponding to each time series in the automobile shock absorption characteristic matrix, and calculates the comprehensive performance index of automobile shock absorption under each time series by using the comprehensive performance analysis formula.

[0011] Optionally, the performance degradation assessment module includes: A performance acquisition unit, which determines the reference value of automobile shock absorption standard performance and the comprehensive performance index of automobile shock absorption under several representative time series; The decay rate calculation unit determines the decay rate of the comprehensive performance index of automobile shock absorption in each time series through a decay formula based on the standard performance reference value of automobile shock absorption and the comprehensive performance index of automobile shock absorption in several representative time series.

[0012] Optionally, the abnormal monitoring module includes: The average decay rate calculation unit calculates the average decay rate of the comprehensive performance index of automobile shock absorption based on the decay rate of the comprehensive performance index of automobile shock absorption in each time series; The performance confirmation unit calculates the current comprehensive performance index of automobile shock absorption based on the average decay rate of the comprehensive performance index of automobile shock absorption; The monitoring unit establishes a shock absorption performance monitoring model based on the current comprehensive performance index of automobile shock absorption and the critical value of the abnormal state of automobile shock absorption, and determines whether the comprehensive performance index of automobile shock absorption at the average decay rate falls below the critical value of the abnormal state of automobile shock absorption. If not, the monitoring continues; if so, an alarm is given for shock absorption abnormality.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a vehicle shock absorption monitoring scheme, which collects historical data based on the vehicle shock absorption sensor, determines the comprehensive performance index of the vehicle shock absorption through comprehensive analysis and establishment of a shock absorption performance data set, and thus realizes the monitoring of the decline state of the vehicle shock absorption performance. The scheme has the advantages of accurate monitoring results, high real-time performance, and quantifiable evaluation. It can timely detect shock absorption problems and provide abnormal alarms, improve monitoring efficiency and reliability, and ensure the safety of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a flow chart of the automobile shock absorption monitoring method; Figure 2 A flow chart of the method for determining comprehensive performance indicators of automobile shock absorption; Figure 3 A flow chart of the method for analyzing the degradation state of automobile shock absorption performance; Figure 4 Flowchart of the method for monitoring whether the shock absorption of automobile is abnormal in order to establish a shock absorption performance monitoring model Figure 5 This is the framework diagram of the automobile shock absorption monitoring system. DETAILED DESCRIPTION

[0015] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0016] Reference Figure 1 As shown, a vehicle shock absorption monitoring method includes: Based on the factory status of the automobile shock absorption, determine the standard performance reference value of the automobile shock absorption and the critical value of the abnormal state of the automobile shock absorption; Through the automobile shock absorption sensor, historical automobile shock absorption driving state sensor data is collected and combined into an automobile shock absorption performance data set; Based on the automobile shock absorption performance data set, the comprehensive performance index of automobile shock absorption is determined by comprehensively analyzing the performance data in the automobile shock absorption performance data set; Analyze the decline state of automobile shock absorption performance based on comprehensive performance indicators of automobile shock absorption and standard performance reference values ​​of automobile shock absorption; Based on the degradation state of automobile shock absorption performance and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established. When the monitored automobile shock absorption performance degradation state is close to the critical value of automobile shock absorption abnormal state, an abnormal alarm is issued.

[0017] The solution collects historical data from the car's shock-absorbing sensors and comprehensively analyzes the data to determine the comprehensive performance indicators of the car's shock absorption. These indicators will be compared with the standard performance reference values ​​in the factory state to identify the decline of the car's shock absorption performance. By establishing a shock absorption performance monitoring model, when the decline of the car's shock absorption performance approaches or reaches the critical value of the abnormal state, the system will issue an abnormal alarm to remind the owner to check and maintain it. In this way: This solution effectively monitors the health of the car's shock absorption system and improves driving safety.

[0018] It should be noted that the automobile shock absorption sensors in this solution include but are not limited to: displacement sensors, acceleration sensors, pressure sensors, temperature sensors, and the sensors are connected to the automobile's ECU computer board to monitor the current state of the automobile in real time.

[0019] Reference Figure 2 As shown, based on the automobile shock absorption performance data set, by comprehensively analyzing the performance data in the automobile shock absorption performance data set, the automobile shock absorption comprehensive performance indicators are determined to include: Based on each element in the automobile shock absorption performance data set, data cleaning and standardization are performed to obtain a preprocessed automobile shock absorption performance data set; Based on the pre-processed automobile shock absorption performance data set, according to the time sequence, the shock absorption features in the pre-processed automobile shock absorption performance data set under the time sequence are screened and bound, and combined into an automobile shock absorption feature matrix A; ; in, is the automobile shock absorption characteristic matrix, is a number of shock absorption features j collected in the i-th time series, n is the sum of the number of time series, and m is the total amount of shock absorption features; Based on the characteristics corresponding to each time series in the automobile shock absorption characteristic matrix, several representative time series are selected, and the comprehensive performance index of automobile shock absorption under each time series is calculated using the comprehensive performance analysis formula; Among them, the comprehensive performance analysis formula is: ; Where P is the comprehensive performance index of automobile shock absorption at each time sequence, are the corresponding damping features j in the i-th time series, , , is the shock absorption feature weight corresponding to each time series.

[0020] It is understandable that since the performance evaluation of automobile shock absorbers is greatly affected by the driving habits of the car owner, when calculating the comprehensive performance of automobile shock absorbers, a machine learning algorithm (such as regression analysis, neural network, etc.) is established to learn from the car owner's driving habit data and determine the car owner's driving behavior; for example: when the car owner's driving habits are more aggressive, the compression and rebound speed of the shock absorber and the damping force of the shock absorber are greater, so the characteristics corresponding to this function should be given a higher weight.

[0021] Reference Figure 3 As shown in the figure, based on the comprehensive performance index of automobile shock absorption and the standard performance reference value of automobile shock absorption, the analysis of the decline state of automobile shock absorption performance specifically includes: Determine the reference value of automobile shock absorption standard performance and comprehensive performance index of automobile shock absorption under several representative time series; Based on the reference value of automobile shock absorption standard performance and the comprehensive performance index of automobile shock absorption under several representative time series, the decline rate of the comprehensive performance index of automobile shock absorption under each time series is determined through the decline formula; The decay formula is: ; Where R is the decay rate of the comprehensive performance index of automobile shock absorption at each time series, It is the reference value of the standard performance of automobile shock absorption.

[0022] The purpose of this solution is to quantitatively evaluate the performance degradation of the automobile shock absorption system. Determine the standard performance reference value of automobile shock absorption and the comprehensive performance index of automobile shock absorption under representative time series, and base on the performance benchmark of factory shock absorbers. Using the degradation formula, compare the actual performance index under each time series with the benchmark value, and calculate the degradation rate of the comprehensive performance index of automobile shock absorption. In this way, the performance change trend of the automobile shock absorption system can be obtained, and potential problems can be discovered and diagnosed in time.

[0023] Reference Figure 4 As shown, based on the decline state of automobile shock absorption performance and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established. When the decline state of automobile shock absorption performance is monitored to be close to the critical value of automobile shock absorption abnormal state, an abnormal alarm is issued, specifically including: Based on the decay rate of the comprehensive performance index of automobile shock absorption in each time series, the average decay rate of the comprehensive performance index of automobile shock absorption is calculated; Based on the average decay rate of the comprehensive performance index of automobile shock absorption, calculate the current comprehensive performance index of automobile shock absorption; Based on the current comprehensive performance index of automobile shock absorption and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established to determine whether the comprehensive performance index of automobile shock absorption under the average decay rate falls below the critical value of automobile shock absorption abnormal state. If not, continue monitoring. If so, alarm shock absorption abnormality. Among them, the shock absorption performance monitoring model is specifically as follows: ; In the formula, is the average decay rate of comprehensive performance indicators of automobile shock absorption, is the decay rate of comprehensive performance index of automobile shock absorption in the i-th time series, is the critical value of the abnormal state of automobile shock absorption, K is the total number of representative monitoring time series screened out, and i is the time series.

[0024] This solution monitors and calculates the decay rate of the automobile shock absorption system performance, achieving real-time evaluation of shock absorption performance and abnormal warning. By calculating the average decay rate, the current automobile shock absorption comprehensive performance index is obtained, and then compared with the preset abnormal state critical value to determine whether there is an abnormal situation. A shock absorption performance monitoring model is established to achieve intelligent monitoring of the automobile shock absorption system and improve driving safety.

[0025] Further, see Figure 5 As shown, based on the same inventive concept of an automobile shock absorption monitoring method, an automobile shock absorption monitoring system is proposed, comprising: A reference data acquisition module, which is used to determine a reference value of a standard performance of automobile shock absorption and a critical value of an abnormal state of automobile shock absorption based on the factory state of automobile shock absorption; The shock absorption data collection module is used to collect historical automobile shock absorption driving state sensor data through automobile shock absorption sensors and combine them into an automobile shock absorption performance data set; A performance evaluation module, the performance evaluation module is electrically connected to the shock absorption data acquisition module, and the performance evaluation module is used to determine the comprehensive performance index of automobile shock absorption by comprehensively analyzing the performance data in the automobile shock absorption performance data set based on the automobile shock absorption performance data set; A performance degradation assessment module, the performance degradation assessment module is electrically connected to the performance assessment module and the benchmark data acquisition module, and the performance degradation assessment module is used to analyze the degradation state of the automobile shock absorption performance based on the comprehensive performance index of the automobile shock absorption and the standard performance reference value of the automobile shock absorption; The abnormal monitoring module is electrically connected to the benchmark data acquisition module of the performance degradation assessment module. The abnormal monitoring module is used to establish a shock absorption performance monitoring model based on the vehicle shock absorption performance degradation state and the critical value of the vehicle shock absorption abnormal state. When the monitored vehicle shock absorption performance degradation state is close to the critical value of the vehicle shock absorption abnormal state, an abnormal alarm is issued.

[0026] The performance evaluation module includes: A data preprocessing unit performs data cleaning and standardization based on each element in the automobile shock absorption performance data set to obtain a preprocessed automobile shock absorption performance data set; The feature matrix unit, based on the pre-processed automobile shock absorption performance data set, screens and binds the shock absorption features in the pre-processed automobile shock absorption performance data set in the time sequence according to the time sequence, and combines them into an automobile shock absorption feature matrix A; The performance calculation unit selects a number of representative time series based on the characteristics corresponding to each time series in the automobile shock absorption characteristic matrix, and calculates the comprehensive performance index of automobile shock absorption under each time series by using the comprehensive performance analysis formula.

[0027] The performance degradation assessment module includes: A performance acquisition unit, which determines the reference value of automobile shock absorption standard performance and the comprehensive performance index of automobile shock absorption under several representative time series; The decay rate calculation unit determines the decay rate of the comprehensive performance index of automobile shock absorption in each time series through a decay formula based on the standard performance reference value of automobile shock absorption and the comprehensive performance index of automobile shock absorption in several representative time series.

[0028] Among them, the abnormal monitoring module includes: The average decay rate calculation unit calculates the average decay rate of the comprehensive performance index of automobile shock absorption based on the decay rate of the comprehensive performance index of automobile shock absorption in each time series; The performance confirmation unit calculates the current comprehensive performance index of automobile shock absorption based on the average decay rate of the comprehensive performance index of automobile shock absorption; The monitoring unit establishes a shock absorption performance monitoring model based on the current comprehensive performance index of automobile shock absorption and the critical value of the abnormal state of automobile shock absorption, and determines whether the comprehensive performance index of automobile shock absorption at the average decay rate falls below the critical value of the abnormal state of automobile shock absorption. If not, the monitoring continues; if so, an alarm is given for shock absorption abnormality.

[0029] The use process of a vehicle shock absorption monitoring system is as follows: Step 1: Based on the factory status of the automobile shock absorption, determine the standard performance reference value of the automobile shock absorption and the critical value of the abnormal state of the automobile shock absorption; Step 2: Collect historical automobile shock absorption driving state sensor data through automobile shock absorption sensors and combine them into an automobile shock absorption performance data set; Step 3: Perform data cleaning and standardization based on each element in the automobile shock absorption performance data set to obtain a preprocessed automobile shock absorption performance data set; Step 4: Based on the pre-processed automobile shock absorption performance data set, according to the time sequence, the shock absorption features in the pre-processed automobile shock absorption performance data set under the time sequence are screened and bound to form an automobile shock absorption feature matrix A; Step 5: Based on the characteristics corresponding to each time series in the automobile shock absorption characteristic matrix, several representative time series are selected, and the comprehensive performance index of automobile shock absorption under each time series is calculated using the comprehensive performance analysis formula; Step 6: Determine the standard performance reference value of automobile shock absorption and the comprehensive performance index of automobile shock absorption under several representative time series; Step 7: Based on the automobile shock absorption standard performance reference value and the automobile shock absorption comprehensive performance index under several representative time series, the automobile shock absorption comprehensive performance index decay rate under each time series is determined by the decay formula; Step 8: Based on the decay rate of the comprehensive performance index of automobile shock absorption in each time series, the average decay rate of the comprehensive performance index of automobile shock absorption is calculated; Step 9: Calculate the current comprehensive performance index of automobile shock absorption based on the average decay rate of the comprehensive performance index of automobile shock absorption; Step 10: Based on the current comprehensive performance index of automobile shock absorption and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established to determine whether the comprehensive performance index of automobile shock absorption at the average decay rate falls below the critical value of automobile shock absorption abnormal state. If not, continue monitoring; if so, alarm shock absorption abnormality.

[0030] In summary, the advantages of the present invention are: based on the historical data collected by the automobile shock absorption sensor, the comprehensive performance index of automobile shock absorption is determined through comprehensive analysis and establishment of shock absorption performance data set, thereby realizing the monitoring of the decline state of automobile shock absorption performance. The solution has the advantages of accurate monitoring results, high real-time performance, and quantifiable evaluation. It can timely detect shock absorption problems and provide abnormal alarms, improve monitoring efficiency and reliability, and ensure the safety of automobile driving.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A vehicle vibration reduction monitoring method, characterized in that: include: Based on the factory status of the automobile shock absorption, determine the standard performance reference value of the automobile shock absorption and the critical value of the abnormal state of the automobile shock absorption; Through the automobile shock absorption sensor, historical automobile shock absorption driving state sensor data is collected and combined into an automobile shock absorption performance data set; Based on the automobile shock absorption performance data set, the comprehensive performance index of automobile shock absorption is determined by comprehensively analyzing the performance data in the automobile shock absorption performance data set; Analyze the decline state of automobile shock absorption performance based on comprehensive performance indicators of automobile shock absorption and standard performance reference values ​​of automobile shock absorption; Based on the degradation state of automobile shock absorption performance and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established. When the monitored automobile shock absorption performance degradation state is close to the critical value of automobile shock absorption abnormal state, an abnormal alarm is issued.

2. The vehicle vibration reduction monitoring method according to claim 1, characterized in that: Based on the automobile shock absorption performance data set, by comprehensively analyzing the performance data in the automobile shock absorption performance data set, the comprehensive performance indicators of automobile shock absorption are determined to include: Based on each element in the automobile shock absorption performance data set, data cleaning and standardization are performed to obtain a preprocessed automobile shock absorption performance data set; Based on the pre-processed automobile shock absorption performance data set, according to the time sequence, the shock absorption features in the pre-processed automobile shock absorption performance data set under the time sequence are screened and bound, and combined into an automobile shock absorption feature matrix A; ； in, is the automobile shock absorption characteristic matrix, is a number of shock absorption features j collected at the i-th time series, n is the sum of the number of time series, and m is the total amount of shock absorption features; Based on the characteristics corresponding to each time series in the automobile shock absorption characteristic matrix, several representative time series are selected, and the comprehensive performance index of automobile shock absorption under each time series is calculated using the comprehensive performance analysis formula; Among them, the comprehensive performance analysis formula is: ； Where P is the comprehensive performance index of automobile shock absorption at each time sequence, are the corresponding damping features j in the i-th time series, , , is the shock absorption feature weight corresponding to each time series.

3. The vehicle vibration reduction monitoring method according to claim 2, characterized in that: Based on the comprehensive performance index of automobile shock absorption and the reference value of automobile shock absorption standard performance, the analysis of automobile shock absorption performance degradation includes: Determine the reference value of automobile shock absorption standard performance and comprehensive performance index of automobile shock absorption under several representative time series; Based on the reference value of automobile shock absorption standard performance and the comprehensive performance index of automobile shock absorption under several representative time series, the decline rate of the comprehensive performance index of automobile shock absorption under each time series is determined through the decline formula; The decay formula is: ； Where R is the decay rate of the comprehensive performance index of automobile shock absorption at each time series, It is the reference value of the standard performance of automobile shock absorption.

4. The vehicle vibration reduction monitoring method according to claim 3 is characterized in that: Based on the decline state of automobile shock absorption performance and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established. When the decline state of automobile shock absorption performance is close to the critical value of automobile shock absorption abnormal state, an abnormal alarm is issued, including: Based on the decay rate of the comprehensive performance index of automobile shock absorption in each time series, the average decay rate of the comprehensive performance index of automobile shock absorption is calculated; Based on the average decay rate of the comprehensive performance index of automobile shock absorption, calculate the current comprehensive performance index of automobile shock absorption; Based on the current comprehensive performance index of automobile shock absorption and the critical value of automobile shock absorption abnormal state, a shock absorption performance monitoring model is established to determine whether the comprehensive performance index of automobile shock absorption under the average decay rate falls below the critical value of automobile shock absorption abnormal state. If not, continue monitoring. If so, alarm shock absorption abnormality. Among them, the shock absorption performance monitoring model is specifically as follows: ； In the formula, is the average decay rate of comprehensive performance indicators of automobile shock absorption, is the decay rate of comprehensive performance index of automobile shock absorption in the i-th time series, is the critical value of the abnormal state of automobile shock absorption, K is the total number of representative monitoring time series screened out, and i is the time series.

5. An automobile shock absorption monitoring system, characterized in that: Used to implement a vehicle shock absorption monitoring method as described in any one of claims 1 to 4, comprising: A reference data acquisition module, which is used to determine a reference value of a standard performance of automobile shock absorption and a critical value of an abnormal state of automobile shock absorption based on the factory state of automobile shock absorption; The shock absorption data collection module is used to collect historical automobile shock absorption driving state sensor data through automobile shock absorption sensors and combine them into an automobile shock absorption performance data set; A performance evaluation module, the performance evaluation module is electrically connected to the shock absorption data acquisition module, and the performance evaluation module is used to determine the comprehensive performance index of automobile shock absorption by comprehensively analyzing the performance data in the automobile shock absorption performance data set based on the automobile shock absorption performance data set; A performance degradation assessment module, the performance degradation assessment module is electrically connected to the performance assessment module and the benchmark data acquisition module, and the performance degradation assessment module is used to analyze the degradation state of the automobile shock absorption performance based on the comprehensive performance index of the automobile shock absorption and the standard performance reference value of the automobile shock absorption; The abnormal monitoring module is electrically connected to the benchmark data acquisition module of the performance degradation assessment module. The abnormal monitoring module is used to establish a shock absorption performance monitoring model based on the vehicle shock absorption performance degradation state and the critical value of the vehicle shock absorption abnormal state. When the monitored vehicle shock absorption performance degradation state is close to the critical value of the vehicle shock absorption abnormal state, an abnormal alarm is issued.

6. The automobile vibration reduction monitoring system according to claim 5, characterized in that: The performance evaluation module includes: A data preprocessing unit performs data cleaning and standardization based on each element in the automobile shock absorption performance data set to obtain a preprocessed automobile shock absorption performance data set; The feature matrix unit, based on the pre-processed automobile shock absorption performance data set, screens and binds the shock absorption features in the pre-processed automobile shock absorption performance data set in the time sequence according to the time sequence, and combines them into an automobile shock absorption feature matrix A; The performance calculation unit selects a number of representative time series based on the characteristics corresponding to each time series in the automobile shock absorption characteristic matrix, and calculates the comprehensive performance index of automobile shock absorption under each time series by using the comprehensive performance analysis formula.

7. The automobile vibration reduction monitoring system according to claim 5, characterized in that: The performance degradation assessment module includes: A performance acquisition unit, which determines the reference value of automobile shock absorption standard performance and the comprehensive performance index of automobile shock absorption under several representative time series; The decay rate calculation unit determines the decay rate of the comprehensive performance index of automobile shock absorption in each time series through a decay formula based on the standard performance reference value of automobile shock absorption and the comprehensive performance index of automobile shock absorption in several representative time series.

8. The automobile vibration reduction monitoring system according to claim 5, characterized in that: The abnormal monitoring module includes: The average decay rate calculation unit calculates the average decay rate of the comprehensive performance index of automobile shock absorption based on the decay rate of the comprehensive performance index of automobile shock absorption in each time series; The performance confirmation unit calculates the current comprehensive performance index of automobile shock absorption based on the average decay rate of the comprehensive performance index of automobile shock absorption; The monitoring unit establishes a shock absorption performance monitoring model based on the current comprehensive performance index of automobile shock absorption and the critical value of the abnormal state of automobile shock absorption, and determines whether the comprehensive performance index of automobile shock absorption at the average decay rate falls below the critical value of the abnormal state of automobile shock absorption. If not, the monitoring continues; if so, an alarm is given for shock absorption abnormality.

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