Vehicle steering system aging detection method, device and vehicle

Abstract

The present invention discloses a vehicle steering system aging detection method, equipment and vehicle, the vehicle steering system aging detection method comprising: obtaining the steering torque value, steering angle and aging ratio curve of the vehicle steering system; determining the measured aging value according to the aging ratio curve, steering torque value and steering angle; updating the aging ratio curve based on the measured aging value and steering angle, and determining the aging detection result of the vehicle steering system according to the updated aging ratio curve. The present invention realizes the automatic detection of the aging detection result of the vehicle steering system in real time, accurately and quickly based on the measured aging value and the aging ratio curve, which greatly improves the objectivity, accuracy and reliability of the aging detection of the vehicle steering system.

Description

Technical Field

[0001] The present invention relates to vehicle detection technology, and in particular to a vehicle steering system aging detection method, device and vehicle. Background Art

[0002] At present, more and more vehicles are equipped with vehicle steering systems (EPS for short). The vehicle steering system allows the driver to easily turn the steering wheel of the vehicle and control the vehicle's driving direction in a timely and accurate manner, so that the driver can master the vehicle's driving status. Therefore, the vehicle steering system plays a very important role in vehicle driving safety. Aging detection of the vehicle steering system is very necessary, but the existing aging detection is measured by the vehicle's mileage. In fact, the vehicle steering system of the lateral steering control has no essential connection with the longitudinal mileage, resulting in inaccurate aging detection of the vehicle steering system and low reliability. Summary of the invention

[0003] The present invention provides a vehicle steering system aging detection method, device and vehicle, and solves the technical problems of inaccurate aging detection and low reliability of the existing vehicle steering system.

[0004] A vehicle steering system aging detection method, comprising:

[0005] Obtain the steering torque value, steering angle and aging ratio curve of the vehicle steering system;

[0006] Determining a measured aging value according to the aging proportion curve, the steering torque value, and the steering angle;

[0007] Based on the measured aging value and the steering angle, the aging proportion curve is updated, and an aging detection result of the vehicle steering system is determined according to the updated aging proportion curve.

[0008] A vehicle steering system aging detection device, comprising:

[0009] An acquisition module is used to obtain a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system;

[0010] A determination module, configured to determine a measured aging value according to the aging proportion curve, the steering torque value and the steering angle;

[0011] The detection module is used to update the aging proportion curve based on the measured aging value and the steering angle, and determine the aging detection result of the vehicle steering system according to the updated aging proportion curve.

[0012] A vehicle comprises a vehicle steering system and a control module connected to the vehicle steering system, wherein the control module executes the above-mentioned vehicle steering system aging detection method.

[0013] The present invention provides a vehicle steering system aging detection method, which realizes the following steps: obtaining a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system; determining a measured aging value according to the aging ratio curve, the steering torque value and the steering angle; updating the aging ratio curve based on the measured aging value and the steering angle, and determining an aging detection result of the vehicle steering system according to the aging ratio curve after the updated processing. Therefore, the present invention can collect the steering torque value and the steering angle in real time, calculate the measured aging value corresponding to the steering angle in real time according to the aging ratio curve, the steering torque value and the steering angle, dynamically update the aging ratio curve based on the measured aging value and the steering angle, and output the aging detection result of the vehicle steering system in real time through the aging ratio curve. In this way, the aging detection result of the vehicle steering system aging condition can be automatically detected in real time, accurately and quickly based on the measured aging value and the aging ratio curve, which greatly improves the objectivity, accuracy and reliability of the vehicle steering system aging detection, and ensures the driving safety of the vehicle steering system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0015] Figure 1 is a flow chart of a vehicle steering system aging detection method according to an embodiment of the present invention;

[0016] Figure 2 is a flow chart of step S20 in a method for detecting aging of a vehicle steering system in one embodiment of the present invention;

[0017] Figure 3 It is a schematic diagram of a vehicle steering system aging detection device in one embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The vehicle steering system aging detection method provided by the present invention can be applied to a control module in a vehicle, and the vehicle steering system aging detection method is implemented through the control module.

[0020] In one embodiment, if Figure 1 As shown, a vehicle steering system aging detection method is provided, and its technical solution mainly includes the following steps S10-S30:

[0021] S10, obtaining a steering torque value, a steering angle, and an aging ratio curve of a vehicle steering system.

[0022] It can be understood that the vehicle steering system is a system for controlling the movement of the vehicle such as driving or reversing, referred to as EPS. The vehicle steering system can calculate the output steering torque value by collecting parameters such as the vehicle speed at the current moment, the hand force of steering wheel rotation, the steering angle of the steering wheel and the steering speed. The steering torque value is a torque that measures the load or resistance that the vehicle is subjected to at the current moment. The steering torque value includes the power torque assisted by the motor and the hand torque assisted by the mechanical force. The power torque and the hand torque can reflect the torque of the load or resistance that the vehicle is subjected to. The steering angle is the angle of rotation of the steering wheel of the vehicle, that is, the rotation angle of the steering wheel of the vehicle. The steering angle can be collected by the angle sensor of the vehicle steering system to measure the angle of rotation of the steering wheel. The zero-degree steering angle of the vehicle steering wheel can be used as a reference. The angle of clockwise rotation exceeding zero degrees is defined as a positive value, and the angle of counterclockwise rotation exceeding zero degrees is defined as a negative value. Generally, the steering wheel of a vehicle can rotate 900 degrees clockwise with zero degrees as the reference, that is, it can rotate two and a half circles clockwise with zero degrees as the reference, and the steering wheel of the vehicle can rotate 900 degrees clockwise with zero degrees as the reference. The vehicle can rotate 900 degrees counterclockwise with zero degree as the reference, that is, it can rotate two and a half circles counterclockwise with zero degree as the reference. Usually, the maximum angle of clockwise rotation is the same as the maximum angle of counterclockwise rotation, and they are symmetrical to each other. The aging proportion curve is a continuous curve presented by the aging proportion values ​​corresponding to each steering angle within the range of all steering angles, that is, it is obtained by collecting the discrete aging proportion values ​​corresponding to each steering angle and using the continuous curve generation. The initial aging proportion curve is a line segment with a value of zero within the range of all steering angles. Because the steering wheel has not been rotated after leaving the factory or being initialized, there is no aging loss process, so the aging proportion value of each steering angle is zero. When the steering wheel starts to rotate from the factory or initialized position, the vehicle steering system starts to lose power. The aging proportion curve will change with the number of times the steering angle is rotated. Usually, the more times a steering angle is rotated, the greater the aging proportion value. As time goes by, the aging proportion curve will present a normally distributed curve because the frequency of arrival in the middle is the highest.

[0023] S20: Determine a measured aging value according to the aging proportion curve, the steering torque value, and the steering angle.

[0024] It can be understood that the aging ratio value corresponding to the steering angle can be found from the aging ratio curve, and then the aging coefficient corresponding to the found aging ratio value can be obtained from the preset aging coefficient comparison table. Finally, the measured aging value corresponding to the steering angle is determined according to the aging coefficient, the steering torque value and the steering angle. The aging coefficient is a variable or coefficient for measuring the aging of the vehicle steering system. The aging coefficient is derived from historical experimental data. The functional relationship between the aging coefficient, steering torque value and steering angle obtained by the experiment and the aging degree measurement standard is used to calculate an aging value of the steering angle that reflects the degree of loss. The measured aging value is an aging value jointly determined by the aging coefficient, the measured steering torque value and the steering angle.

[0025] Among them, the aging proportion value in the aging proportion curve corresponds to the steering angle one by one, that is, one steering angle corresponds to one aging proportion value, and the aging coefficient comparison table is a table of the one-to-one correspondence between the aging proportion value and the aging coefficient. The aging coefficient reflects that different aging proportion values ​​correspond to different aging coefficients. The aging proportion value and the aging coefficient can present a linear or parabolic relationship. When the aging proportion value is zero, the aging coefficient is 1, and when the aging proportion value is 100%, the aging coefficient is 0.

[0026] In one embodiment, the step S20, i.e., determining the measured aging value according to the aging proportion curve, the steering torque value and the steering angle, includes:

[0027] S201, determining an aging proportion value to be processed according to the aging proportion curve and the steering angle.

[0028] Understandably, the aging proportion value corresponding to the steering angle is found in the aging proportion curve, and the found aging proportion value is determined as the aging proportion value to be processed, and the aging proportion value to be processed is the aging proportion value that needs to be processed or changed.

[0029] S202: Determine an aging coefficient corresponding to the aging ratio value to be processed according to a preset aging coefficient comparison table.

[0030] It can be understood that the aging coefficient comparison table is a comparison table obtained in advance through experiments, and the aging coefficient corresponding to the aging proportion value to be processed is found from the aging coefficient comparison table.

[0031] S203: Determine the measured aging value according to the aging coefficient, the steering torque value, and the steering angle.

[0032] It can be understood that by searching the aging coefficient, collecting the steering torque value and the steering angle, a preset aging function is used to calculate the measured aging value corresponding to the steering angle. The preset aging function can reflect the relationship between the aging coefficient, the steering torque value and the steering angle and the degree of damage caused by aging.

[0033] The present invention realizes determining the aging ratio value to be processed according to the aging ratio curve and the steering angle; determining the aging coefficient corresponding to the aging ratio value to be processed according to a preset aging coefficient comparison table; and determining the measured aging value according to the aging coefficient, the steering torque value and the steering angle. In this way, it is realized that by finding the aging ratio value of the current steering angle in the aging ratio curve, and then obtaining the aging coefficient corresponding to the found aging ratio value from the aging coefficient comparison table, the aging value is automatically determined based on the aging coefficient, the steering torque value and the steering angle, the aging degree of the vehicle steering system at the current steering angle at this moment is accurately measured, and the degree of damage or equipment aging caused by reaching once at a steering angle is scientifically and objectively measured.

[0034] In one embodiment, determining the measured aging value according to the aging coefficient, the steering torque value and the steering angle includes:

[0035] The measured aging value is obtained according to the aging coefficient, the steering torque value, the steering angle and a preset aging function; the preset aging function is:

[0036] y=T×θ×k,

[0037] in,

[0038] y is the measured aging value;

[0039] T is the steering torque value;

[0040] θ is the steering angle;

[0041] k is the aging coefficient.

[0042] In this way, the preset aging function can accurately measure the degree of damage or device aging caused by a single arrival at a certain steering angle.

[0043] S30, updating the aging proportion curve based on the measured aging value and the steering angle, and determining an aging detection result of the vehicle steering system according to the updated aging proportion curve.

[0044] Understandably, a steering angle-aging value coordinate diagram of the relationship between the steering angle and the aging value is pre-constructed. The steering angle-aging value coordinate diagram records the distribution diagram of the aging values ​​of the valid discrete points represented by each steering angle being reached once, that is, the steering angle-aging value coordinate diagram records the historical discrete valid aging values. The discrete aging values ​​calculated at the same steering angle will not differ greatly, that is, the discrete aging values ​​will be within a certain tolerance range. The aging values ​​will fluctuate during the entire life cycle or aging cycle, but the amplitude of the fluctuation will not exceed a certain tolerance range. The tolerance range will change dynamically with the change of time and steering angle. Therefore, it is necessary to filter or judge whether the measured aging value is a valid discrete point, and then the aging value determined to be valid will fall into the steering angle-aging value coordinate diagram, the invalid aging value will be eliminated, and the filtered valid measured aging value will be inserted into the steering angle-aging value coordinate diagram. The update processing process is: all aging values ​​at each steering angle in the steering angle-aging value coordinate diagram are accumulated, and the accumulated result is The continuous curve is connected to obtain a new aging curve, that is, a continuous curve is drawn or generated according to discrete points, that is, a curve function is generated for a series of array matrices of steering angles-cumulative aging values, and a curve function is generated that can reflect the distribution of the array matrix of steering angles-cumulative aging values, the cumulative aging value is the value of accumulating all aging values ​​under a steering angle, and then according to the new aging curve and the preset life curve, the aging proportion value of each steering angle is obtained, and the original aging proportion curve is updated to obtain a new aging proportion curve. The updating process can also be: adding the effective measured aging value to the aging curve that has been generated, that is, adding the measured aging value and the cumulative aging value corresponding to the steering angle in the generated aging curve to obtain a new cumulative aging value corresponding to the steering angle, thereby generating a new aging curve, and then according to the new aging curve and the preset life curve, the original aging proportion curve is updated. In this way, the aging values ​​of other steering angles can be accumulated or unchanged operations can be performed on other steering angles, thereby reducing the processing operations of the processor.

[0045] Among them, all aging proportion values ​​in the new aging proportion curve are analyzed to determine the aging detection result, which is the result of the aging state of the vehicle steering system based on the aging proportion curve. The aging detection result reflects the aging state or situation of the current vehicle steering system and plays a warning role.

[0046] The present invention achieves the following: obtaining the steering torque value, steering angle and aging proportion curve of the vehicle steering system; determining the measured aging value according to the aging proportion curve, the steering torque value and the steering angle; updating the aging proportion curve based on the measured aging value and the steering angle, and determining the aging detection result of the vehicle steering system according to the updated aging proportion curve. Therefore, the present invention can collect the steering torque value and steering angle in real time, calculate the measured aging value corresponding to the steering angle in real time according to the aging proportion curve, the steering torque value and the steering angle, dynamically update the aging proportion curve based on the measured aging value and the steering angle, and output the aging detection result of the vehicle steering system in real time through the aging proportion curve. In this way, the aging detection result of the vehicle steering system aging condition can be automatically detected in real time, accurately and quickly based on the measured aging value and the aging proportion curve, which greatly improves the objectivity, accuracy and reliability of the aging detection of the vehicle steering system and ensures the driving safety of the vehicle steering system.

[0047] In one embodiment, in step S30, that is, updating the aging proportion curve based on the measured aging value and the steering angle, includes:

[0048] It is determined whether the measured aging value falls within a historical aging matrix interval corresponding to the steering angle.

[0049] It can be understood that the historical aging matrix interval is a matrix interval generated based on all historical aging values ​​within the preset range of the steering angle. The historical aging matrix interval can be used to determine whether the measured aging value is a valid discrete point. The historical aging matrix interval is a matrix interval composed of all historical discrete aging values ​​within the preset range of the steering angle. The mean of the historical aging matrix interval is calculated to determine whether the measured aging value is within the preset tolerance value range of the mean, or the mean and variance of the historical aging matrix interval are calculated, and a preset tolerance value range is set based on the variance to determine whether the measured aging value is within the preset tolerance value range of the mean. The preset tolerance value is a tolerance value output through historical experiment summary for determining whether the aging value is valid. If it is within the preset tolerance value range of the mean, it is determined that the measured aging value falls within the historical aging matrix interval. If it is not within the preset tolerance value range of the mean, it is determined that the measured aging value does not fall within the historical aging matrix interval, and the measured aging value needs to be deleted or eliminated. In this way, the measured aging value can be filtered to avoid the influence of the erroneously collected measured aging value on the aging detection of the vehicle steering system.

[0050] In one embodiment, the determining whether the measured aging value falls within a historical aging matrix interval corresponding to the steering angle includes:

[0051] A preset angle interval corresponding to the steering angle is obtained.

[0052] Understandably, a corresponding preset angle interval is pre-set for each steering angle, and the preset angle interval is the tolerance range of the steering angle. The preset angle interval can be set according to demand. For example, if the steering angle is +20 degrees, the preset angle interval is a tolerance range of 3 degrees, i.e., +17 (+20-3) degrees to +23 (+20+3) degrees. Since larger steering angles occur less frequently, the preset angle interval can be set to be the same as other steering angles, or the preset angle interval can be set to be different. For example: if the steering angle is -380 degrees, the preset angle interval is a tolerance range of 10 degrees, i.e., -390 (-380-10) degrees to -370 (-380+10) degrees.

[0053] The historical aging matrix interval is generated according to the preset angle interval and the aging proportion curve.

[0054] It can be understood that a coordinate graph of the steering angle-aging value corresponding to the aging proportion curve is obtained, and an aging curve can be generated through the coordinate graph of the steering angle-aging value. An aging proportion curve can be generated based on the aging curve. Therefore, one aging proportion curve corresponds to a coordinate graph of the steering angle-aging value, and all aging values ​​within the preset angle range are extracted from the coordinate graph of the steering angle-aging value corresponding to the aging proportion curve, thereby generating the historical aging matrix interval corresponding to the steering angle, or the matrix window corresponding to the steering angle.

[0055] The present invention realizes generating a preset angle interval through an angle adjacent to the steering angle, and automatically generating a historical aging matrix interval based on the preset angle interval, and effectively judging the measured aging value through the historical aging matrix interval. Usually, the aging values ​​within the adjacent preset angle intervals are close, and will not be too large or too small. If the value is too large or too small, it is a mis-sampled value, which is an invalid aging value. In this way, it is possible to automatically judge whether the measured aging value is valid, thereby improving the accuracy and reliability of the aging value, and avoiding the influence of the mis-sampled output aging value on the output aging detection result.

[0056] When the measured aging value falls within the historical aging matrix interval, the aging proportion curve is updated according to the measured aging value.

[0057] It can be understood that if the measured aging value falls into the historical aging matrix interval, the measured aging value is added to the aging curve corresponding to the aging proportion curve, thereby updating the aging curve, and then the updated aging curve and the preset life curve are divided, and the result of the division is used to update the current aging proportion curve.

[0058] In one embodiment, updating the aging proportion curve according to the measured aging value includes:

[0059] The measured aging value is added to an aging curve corresponding to the aging proportion curve.

[0060] It can be understood that in the coordinate diagram of the steering angle-aging value corresponding to the aging proportion curve, the measured aging value is added to the steering angle corresponding to the measured aging value, all aging values ​​corresponding to the same steering angle are accumulated to obtain the cumulative aging value of the steering angle, and the cumulative aging values ​​of all steering angles are continuously connected to obtain the aging curve. The continuous connection process can be filtering, summing weighted and interpolating mean square to transform discrete points into a continuous curve, thereby obtaining the added aging curve, and storing the aging curve.

[0061] The aging proportion curve is updated according to the aging curve after adding the measured aging value and the preset life curve.

[0062] It can be understood that the life curve is a curve of all steering angles depicted by the life values ​​corresponding to each steering angle obtained based on experimental data statistics. The quotient of the cumulative aging value in the increased aging curve under the same steering angle and the life value in the life curve is used to obtain the aging proportion value of the steering angle. All aging proportion values ​​are summarized and connected to update the original aging proportion curve to obtain a new aging proportion curve, and the aging proportion curve is stored so that it can be called or obtained when a new steering angle is triggered later, and the aging proportion curve is updated in time to facilitate the subsequent output of the aging detection result.

[0063] The life value reflects the life span of the structure in the steering system at a certain steering angle.

[0064] The present invention realizes the method of adding the measured aging value to the aging curve corresponding to the aging proportion curve; updating the aging proportion curve according to the aging curve after adding the measured aging value and the preset life curve, so that the effective measured aging value can be automatically added to the aging curve, and the aging proportion curve can be automatically updated based on the aging curve and the preset life curve.

[0065] When the measured aging value does not fall into the historical aging matrix interval, the measured aging value is deleted.

[0066] Understandably, if the measured aging value does not fall into the historical aging matrix interval, the measured aging value is removed and the original aging proportion curve is retained, that is, the aging proportion curve remains unchanged.

[0067] In one embodiment, the step S30, i.e., determining the aging detection result of the vehicle steering system according to the updated aging proportion curve, includes:

[0068] Obtain a preset warning threshold and a maximum aging proportion value in the updated aging proportion curve.

[0069] It is understandable that the preset warning threshold is a threshold for setting a warning or reminder. The preset warning threshold can be set according to needs. For example, the preset warning threshold can be one warning or reminder value, or can be multiple warning or reminder values. The maximum aging proportion value is the largest value among the aging proportion values ​​corresponding to all steering angles in the aging proportion curve.

[0070] The aging detection result is determined according to the preset warning threshold and the maximum aging ratio value.

[0071] It can be understood that when the maximum aging ratio value is greater than or equal to the preset warning threshold, the maximum aging ratio value and the warning information corresponding to the preset warning threshold are used as the aging detection result; when the maximum aging ratio value is less than the preset warning threshold, the maximum aging ratio value is used as the aging detection result. In one embodiment, the preset warning threshold includes multiple preset sub-thresholds, different preset sub-thresholds correspond to different warning information, and the warning information has high, medium and low priorities. When the maximum aging ratio value is greater than or equal to the preset sub-threshold, the maximum aging ratio value and the warning information with the highest priority among all the warning information corresponding to the preset sub-threshold value are used as the aging detection result; when the maximum aging ratio value is less than all preset sub-thresholds, the maximum aging ratio value is used as the aging detection result. In this way, the aging detection result reflects the aging state or situation of the current vehicle steering system and plays a warning role.

[0072] The present invention achieves the goal of obtaining a preset warning threshold and a maximum aging proportion value in the updated aging proportion curve; determining the aging detection result according to the preset warning threshold and the maximum aging proportion value. In this way, the preset warning threshold and the maximum aging proportion value can be combined to automatically output the aging detection result of the aging condition of the vehicle steering system, thereby achieving the effect of timely warning, ensuring the driving safety of the vehicle steering system, and improving the accuracy and reliability of the output of the aging detection result of the vehicle steering system.

[0073] In one embodiment, a vehicle steering system aging detection device is provided, and the vehicle steering system aging detection device corresponds to the vehicle steering system aging detection method in the above embodiment. Figure 3As shown, the vehicle steering system aging detection device includes an acquisition module 11, a determination module 12 and a detection module 13. The functional modules are described in detail as follows:

[0074] An acquisition module 11 is used to acquire a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system;

[0075] A determination module 12, configured to determine a measured aging value according to the aging proportion curve, the steering torque value and the steering angle;

[0076] The detection module 13 is used to update the aging proportion curve based on the measured aging value and the steering angle, and determine the aging detection result of the vehicle steering system according to the updated aging proportion curve.

[0077] The specific definition of the vehicle steering system aging detection device can be found in the above definition of the vehicle steering system aging detection method, which will not be repeated here. Each module in the above vehicle steering system aging detection device can be fully or partially implemented by software, relevant hardware in the vehicle and their combination.

[0078] The present invention provides a vehicle, including a vehicle steering system and a control module connected to the vehicle steering system, wherein the control module executes the above-mentioned vehicle steering system aging detection method, the control module is a module that controls all processors integrated in the vehicle, and the vehicle steering system is a system that controls the movement of the vehicle such as driving or reversing.

[0079] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vehicle steering system aging detection method, characterized in that: include: Obtaining a steering torque value, a steering angle, and an aging ratio curve of a vehicle steering system; the aging ratio curve is a curve showing a normal distribution; Determining a measured aging value according to the aging proportion curve, the steering torque value, and the steering angle; Based on the measured aging value and the steering angle, the aging proportion curve is updated, and an aging detection result of the vehicle steering system is determined according to the updated aging proportion curve; The step of determining the measured aging value according to the aging proportion curve, the steering torque value, and the steering angle includes: Determine an aging proportion value to be processed according to the aging proportion curve and the steering angle; Determine the aging coefficient corresponding to the aging ratio value to be processed according to a preset aging coefficient comparison table; determining the measured aging value according to the aging coefficient, the steering torque value and the steering angle; The determining the measured aging value according to the aging coefficient, the steering torque value and the steering angle comprises: The measured aging value is obtained according to the aging coefficient, the steering torque value, the steering angle and a preset aging function; the preset aging function is used to measure the degree of aging of the device caused by being reached once at a steering angle.

2. The vehicle steering system aging detection method according to claim 1, characterized in that: The preset aging function is: in, To measure the aging value; is the steering torque value; is the steering angle; is the aging coefficient.

3. The vehicle steering system aging detection method according to claim 1, characterized in that: The updating process of the aging proportion curve based on the measured aging value and the steering angle includes: Determining whether the measured aging value falls within a historical aging matrix interval corresponding to the steering angle; When the measured aging value falls into the historical aging matrix interval, updating the aging proportion curve according to the measured aging value; When the measured aging value does not fall into the historical aging matrix interval, the measured aging value is deleted.

4. The vehicle steering system aging detection method according to claim 3, characterized in that: The determining whether the measured aging value falls before the historical aging matrix interval corresponding to the steering angle includes: Acquire a preset angle interval corresponding to the steering angle; The historical aging matrix interval is generated according to the preset angle interval and the aging proportion curve.

5. The vehicle steering system aging detection method according to claim 3, characterized in that: The updating of the aging proportion curve according to the measured aging value includes: adding the measured aging value to an aging curve corresponding to the aging proportion curve; The aging proportion curve is updated according to the aging curve after adding the measured aging value and the preset life curve.

6. The vehicle steering system aging detection method according to claim 5, characterized in that: The step of determining the aging detection result of the vehicle steering system according to the aging proportion curve after the updating process includes: Obtaining a preset warning threshold and a maximum aging proportion value in the updated aging proportion curve; The aging detection result is determined according to the preset warning threshold and the maximum aging ratio value.

7. A vehicle steering system aging detection device, characterized in that: include: An acquisition module, used to acquire a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system; the aging ratio curve is a curve showing a normal distribution; A determination module, configured to determine a measured aging value according to the aging proportion curve, the steering torque value and the steering angle; a detection module, configured to update the aging proportion curve based on the measured aging value and the steering angle, and determine an aging detection result of the vehicle steering system according to the updated aging proportion curve; The step of determining the measured aging value according to the aging proportion curve, the steering torque value, and the steering angle includes: Determine an aging proportion value to be processed according to the aging proportion curve and the steering angle; Determine the aging coefficient corresponding to the aging ratio value to be processed according to a preset aging coefficient comparison table; determining the measured aging value according to the aging coefficient, the steering torque value and the steering angle; The determining the measured aging value according to the aging coefficient, the steering torque value and the steering angle comprises: The measured aging value is obtained according to the aging coefficient, the steering torque value, the steering angle and a preset aging function; the preset aging function is used to measure the degree of aging of the device caused by being reached once at a steering angle.

8. A vehicle, characterized in that: It comprises a vehicle steering system and a control module connected to the vehicle steering system, and the control module executes the vehicle steering system aging detection method according to any one of claims 1 to 6.

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