CN115219249A - Vehicle steering system aging detection method and device and vehicle - Google Patents
Vehicle steering system aging detection method and device and vehicle Download PDFInfo
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- CN115219249A CN115219249A CN202210143486.9A CN202210143486A CN115219249A CN 115219249 A CN115219249 A CN 115219249A CN 202210143486 A CN202210143486 A CN 202210143486A CN 115219249 A CN115219249 A CN 115219249A
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Abstract
The invention discloses a method and equipment for detecting the aging of a vehicle steering system and a vehicle, wherein the method for detecting the aging of the vehicle steering system comprises the following steps: the method comprises the steps of obtaining a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system; determining a measurement aging value according to the aging proportion curve, the steering torque value and the steering angle; and 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 updated aging ratio curve. The aging detection method and the aging detection device realize that the aging detection result of the vehicle steering system can be automatically detected in real time, accurately and quickly based on the measured aging value and the aging ratio curve, and the objectivity, the accuracy and the reliability of the aging detection of the vehicle steering system are greatly improved.
Description
Technical Field
The invention relates to a vehicle detection technology, in particular to a method and a device for detecting aging of a vehicle steering system and a vehicle.
Background
At present, more and more vehicles are equipped with a vehicle steering system (EPS), which enables a driver to easily steer a steering wheel of the vehicle, timely and accurately control a driving direction of the vehicle, and further enables the driver to master a driving state of the vehicle, so the vehicle steering system plays an important role in vehicle driving safety, and is necessary for aging detection of the vehicle steering system.
Disclosure of Invention
The invention provides a method and a device for detecting aging of a vehicle steering system and a vehicle, and solves the technical problems of inaccurate aging detection and low reliability of the conventional vehicle steering system.
A vehicle steering system degradation detection method, comprising:
acquiring a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system;
determining a measurement aging value according to the aging ratio curve, the steering torque value and the steering angle;
and 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 updated aging ratio curve.
A vehicle steering system degradation detection apparatus comprising:
the acquisition module is used for acquiring a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system;
the determining module is used for determining a measurement aging value according to the aging ratio curve, the steering torque value and the steering angle;
and the detection module is used for 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 updated aging ratio curve.
A vehicle comprises a vehicle steering system and a control module connected with the vehicle steering system, wherein the control module executes the vehicle steering system aging detection method.
The invention provides a method for detecting aging of a vehicle steering system, which realizes the purpose of obtaining a steering torque value, a steering angle and an aging proportion curve of the vehicle steering system; determining a measurement aging value according to the aging ratio 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 the aging detection result of the vehicle steering system is determined according to the updated aging proportion curve, so that the invention can real-timely acquire the steering torque value and the steering angle, real-timely calculate the measured aging value corresponding to the steering angle 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, thereby realizing real-timely, accurate and rapid automatic detection of the aging condition of the vehicle steering system based on the measured aging value and the aging proportion curve, greatly improving the objectivity, accuracy and reliability of the aging detection of the vehicle steering system, and ensuring the driving safety of the vehicle steering system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a flow chart of a method for detecting degradation in a steering system of a vehicle in accordance with an embodiment of the present invention;
FIG. 2 is a flowchart of step S20 of the method for detecting degradation of a steering system of a vehicle according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a vehicle steering system degradation detection apparatus in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The aging detection method of the vehicle steering system can be applied to a control module in a vehicle, and the aging detection method of the vehicle steering system is realized through the control module.
In one embodiment, as shown in fig. 1, a method for detecting aging of a steering system of a vehicle is provided, which mainly includes the following steps S10 to S30:
and S10, acquiring a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system.
Understandably, the vehicle steering system is a system for controlling the vehicle to move such as running or reversing, which is abbreviated as EPS, and can calculate and output a steering torque value by acquiring parameters such as the vehicle speed, the hand force of steering wheel rotation, the steering angle of the steering wheel, the rotating speed of the steering wheel and the like of the vehicle at the current moment, wherein the steering torque value is a torque for measuring the load or resistance of the vehicle at the current moment, the steering torque value comprises a motor-assisted assist torque and a mechanical-assisted hand torque, the torque for reflecting the load or resistance of the vehicle can be reflected by the assist torque and the hand torque, the steering angle is the rotating angle of the steering wheel of the vehicle, namely the rotating angle of the steering wheel of the vehicle, the steering angle can be acquired by an angle sensor of the vehicle steering system so as to measure the rotating angle of the steering wheel, and the zero-degree steering angle of the steering wheel of the vehicle can be used as a reference, the angle of clockwise rotation exceeding zero is defined as a positive value, the angle of counterclockwise rotation exceeding zero is defined as a negative value, a steering wheel of a general vehicle can rotate clockwise by 900 degrees on the basis of zero, namely can rotate clockwise by two and a half turns on the basis of zero, can rotate anticlockwise by 900 degrees on the basis of zero, namely can rotate anticlockwise by two and a half turns on the basis of zero, the maximum angle of clockwise rotation and the maximum angle of counterclockwise rotation are generally the same and symmetrical to each other, the aging occupancy curve is a continuous curve represented by the aging occupancy ratio values corresponding to all steering angles in the range of all steering angles, namely, the aging occupancy curve is generated by using the discrete aging occupancy values corresponding to all the steering angles, the initial aging occupancy curve is a line segment with zero value in the range of all the steering angles, because the factory or initialized steering wheel does not rotate and has no aging loss process, the aging ratio value of each steering angle is zero, when the steering wheel rotates from the factory or initialized position, the vehicle steering system starts to lose, the aging ratio curve can change along with the arrival times of the rotating steering angles, generally, the aging ratio value is larger as the number of times of rotating one steering angle is larger, and the aging ratio curve can present a normally distributed curve along with the time, because the arrival frequency is highest in the middle.
And S20, determining a measurement aging value according to the aging ratio curve, the steering torque value and the steering angle.
Understandably, an aging ratio corresponding to the steering angle can be found from the aging ratio curve, then an aging coefficient corresponding to the found aging ratio is obtained from a 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 obtained by derivation from historical experimental data, and an aging value for representing the loss degree of the steering angle is calculated through a function relation among the aging coefficient, the steering torque value and the measurement standards of the steering angle and the aging degree, which are obtained through experiments, and the measured aging value is an aging value determined by the aging coefficient, the measured steering torque value and the steering angle together.
The aging ratio in the aging ratio curve corresponds to the steering angles one by one, namely one steering angle corresponds to one aging ratio, the aging coefficient comparison table is a table of the one-to-one correspondence relationship of the aging ratio and the aging coefficient, the aging coefficient shows that different aging ratios correspond to different aging coefficients, the aging ratio and the aging coefficient can present a linear or parabolic relationship, when the aging ratio is zero, the aging coefficient is 1, and when the aging ratio is 100%, the aging coefficient is 0.
In an embodiment, the determining a measurement aging value according to the aging ratio curve, the steering torque value and the steering angle in step S20 includes:
s201, determining an aging ratio value to be processed according to the aging ratio curve and the steering angle.
Understandably, the aging proportion corresponding to the steering angle is found in the aging proportion curve, that is, the found aging proportion is determined as the aging proportion to be processed, and the aging proportion to be processed is the aging proportion to be processed or changed.
And S202, determining an aging coefficient corresponding to the aging ratio to be processed according to a preset aging coefficient comparison table.
Understandably, 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 treated is searched from the aging coefficient comparison table.
S203, determining the measurement aging value according to the aging coefficient, the steering torque value and the steering angle.
Understandably, a preset aging function is used for calculating a measurement aging value corresponding to the steering angle through the searched aging coefficient, the collected steering torque value and the steering angle, and the preset aging function can reflect the relationship among the aging coefficient, the steering torque value and the steering angle and the aging damage degree.
The aging proportion value to be processed is determined according to the aging proportion curve and the steering angle; determining an aging coefficient corresponding to the aging ratio to be processed according to a preset aging coefficient comparison table; the measured aging value is determined according to the aging coefficient, the steering torque value and the steering angle, so that the aging ratio of the current steering angle is found in an aging ratio curve, the aging coefficient corresponding to the found aging ratio is obtained from an 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 the moment is accurately measured, and the degree of damage or instrument aging caused by once arriving at one steering angle is scientifically and objectively measured.
In one embodiment, said determining said measured ageing value from said ageing factor, said steering torque value and said steering angle comprises:
obtaining the measurement aging value according to the aging coefficient, the steering torque value, the steering angle and a preset aging function; the preset aging function is as follows:
y＝T×θ×k，
wherein,
y is a measured aging value;
t is a steering torque value;
theta is a steering angle;
k is the aging factor.
Therefore, the degree of damage or instrument aging caused by arriving at one time under a steering angle can be accurately measured through the preset aging function.
And S30, 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 updated aging ratio curve.
Understandably, a steering angle-aging value coordinate graph of a relationship between a steering angle and an aging value is constructed in advance, the steering angle-aging value coordinate graph records a distribution graph of aging values of effective discrete points when each steering angle is reached once, namely, the steering angle-aging value coordinate graph records historical each discrete effective aging value, the discrete aging values calculated under the same steering angle do not have great difference, namely, the discrete aging values are within a certain tolerance range, the aging values in the whole life cycle or the aging cycle fluctuate, but the fluctuation range does not exceed a certain tolerance range, the tolerance range can dynamically change along with the change of time and the steering angle, therefore, whether the measured aging values are effective discrete points or not needs to be filtered or judged, the aging values determined to be effective are in the steering angle-aging value coordinate graph, the ineffective aging values are removed, and the effective measured aging values after being filtered are inserted into the steering angle-aging value coordinate graph, and the updating process is as follows: accumulating all aging values under all steering angles in a coordinate graph of steering angle-aging values, and performing continuous curve connection on accumulated results to obtain a new aging curve, namely, drawing or generating a continuous curve according to discrete points, namely, generating a curve function on a series of array matrixes of steering angle-accumulated aging values, generating a curve function capable of reflecting the distribution condition of the array matrixes of steering angle-accumulated aging values, wherein the accumulated aging value is the value of all aging values under one steering angle, then obtaining the aging ratio of each steering angle according to the new aging curve and a preset life curve, updating the original aging ratio curve, thereby obtaining a new aging ratio curve, and the updating processing process can also be: and adding the effective measured aging value into the originally generated aging curve, namely adding the measured aging value and the accumulated aging value corresponding to the steering angle in the generated aging curve to obtain a new accumulated aging value corresponding to the steering angle, so as to generate a new aging curve, and updating the original aging ratio curve according to the new aging curve and a preset service life curve, so that the aging values of other steering angles can be subjected to accumulation processing or unchanged operation can be performed on other steering angles, and the processing operation of a processor is reduced.
Analyzing all aging ratio values in the new aging ratio curve to determine the aging detection result, wherein the aging detection result is the result of the aging state of the vehicle steering system based on the aging ratio curve, and the aging detection result reflects the aging state or condition of the current vehicle steering system and plays a role of early warning.
The invention realizes the purposes of obtaining the steering torque value, the steering angle and the aging proportion curve of the vehicle steering system; determining a measurement aging value according to the aging ratio 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 the aging detection result of the vehicle steering system is determined according to the updated aging proportion curve, so that the steering torque value and the steering angle which are acquired in real time can be obtained, the measured aging value corresponding to the steering angle is calculated in real time according to the aging proportion curve, the steering torque value and the steering angle, the aging proportion curve is dynamically updated based on the measured aging value and the steering angle, and the aging detection result of the vehicle steering system is output in real time through the aging proportion curve.
In an embodiment, in the step S30, that is, the updating the aging occupancy curve based on the measured aging value and the steering angle, includes:
and judging whether the measured aging value falls into a historical aging matrix interval corresponding to the steering angle.
Understandably, the historical aging matrix interval is a matrix interval generated based on aging values of all histories within a preset range of the steering angle, whether the measurement aging value is an effective discrete point can be judged through the historical aging matrix interval, the historical aging matrix interval is a matrix interval formed by discrete aging values of all histories within the preset range of the steering angle, a mean value calculation is performed on the historical aging matrix interval, whether the measurement aging value is within a preset tolerance value range of the mean value or not is judged, or a mean value and a variance calculation is performed on the historical aging matrix interval, a preset tolerance value range is set on the basis of the variance, whether the measurement aging value is within the preset tolerance value range of the mean value or not is judged, the preset tolerance value is output through a historical experiment summary for judging whether the aging value is an effective tolerance value or not, if the measurement aging value is within the preset tolerance value range of the mean value, the measurement aging value is determined in the historical aging matrix, if the measurement aging value is not within the preset tolerance value range of the mean value, the measurement aging value is determined not to fall into the historical aging matrix, the aging matrix is removed, and the measurement aging value is removed, so that the measurement aging value is removed, and the measurement aging matrix is detected, and the measurement aging value is prevented from being mistakenly detected.
In one embodiment, before determining whether the measured aging value falls within a historical aging matrix interval corresponding to the steering angle, the method includes:
and acquiring a preset angle interval corresponding to the steering angle.
Understandably, each steering angle is preset with a corresponding preset angle interval, the preset angle interval is a tolerance range of the steering angle, the preset angle interval can be set according to requirements, for example, the steering angle is +20 degrees, the preset angle interval is a tolerance range of 3 degrees, namely +17 (+ 20-3) degrees to +23 (+ 20+ 3) degrees, because the frequency of the larger steering angle is less, the preset angle interval can be set to be the same as other steering angles, and the preset angle interval can also be set to be different, for example: the steering angle is-380 degrees, and the preset angle interval is a tolerance range of 10 degrees, namely-390 (-380-10) degrees to-370 (-380 + 10) degrees.
And generating the historical aging matrix interval according to the preset angle interval and the aging ratio curve.
Understandably, a coordinate graph of a steering angle-aging value corresponding to the aging duty curve is acquired, an aging curve can be generated through the coordinate graph of the steering angle-aging value, and an aging duty curve can be generated based on the aging curve, so that one aging duty curve corresponds to one coordinate graph of the steering angle-aging value, and all aging values within the range of the preset angle interval are extracted from the coordinate graph of the steering angle-aging value corresponding to the aging duty curve, thereby generating the historical aging matrix interval corresponding to the steering angle, or the matrix window corresponding to the steering angle.
The method and the device realize the generation of the preset angle interval through the angle adjacent to the steering angle, automatically generate the historical aging matrix interval based on the preset angle interval, and effectively judge the measured aging value through the historical aging matrix interval, generally, the aging value in the range of the adjacent preset angle interval is close, the condition of overlarge or undersize cannot occur, the condition of the overlarge or undersize is the condition of mistaken sampling, and the aging value belongs to an invalid aging value, so that whether the measured aging value is effective or not can be automatically judged, the accuracy and the reliability of the aging value are improved, and the aging value output by the mistaken sampling is prevented from influencing the output aging detection result.
And when the measured aging value falls into the historical aging matrix interval, updating the aging proportion curve according to the measured aging value.
Understandably, if the measured aging value falls into the historical aging matrix interval, adding the measured aging value into an aging curve corresponding to the aging ratio curve so as to update the aging curve, then carrying out quotient calculation on the updated aging curve and a preset service life curve, and updating the current aging ratio curve according to the quotient calculation result.
In an embodiment, said updating said aging duty curve based on said measured aging value comprises:
adding the measured aging value to an aging curve corresponding to the aging ratio curve.
Understandably, the measured aging value is added to the steering angle corresponding to the measured aging value in the coordinate graph of the steering angle-aging value corresponding to the aging ratio curve, all aging values corresponding to the same steering angle are accumulated to obtain an accumulated aging value of the steering angle, the accumulated aging values of all steering angles are continuously connected to obtain an aging curve, and the continuous connection process can be processing such as filtering, summation weighting and interpolation mean square to convert discrete points into a continuous curve, so that the added aging curve is obtained, and the aging curve is stored.
And updating the aging ratio curve according to the aging curve with the added measured aging value and a preset service life curve.
Understandably, the service life curve is a curve of all steering angles drawn by service life values corresponding to all steering angles obtained according to experimental data statistics, the quotient of an accumulated aging value in an aging curve after being added under the same steering angle and the service life value in the service life curve is obtained to obtain an aging ratio of the steering angle, all aging ratios are collected and connected, so that the original aging ratio curve is updated, a new aging ratio curve is obtained, the aging ratio curve is stored, the aging ratio curve is called or obtained when a new steering angle is triggered, and the aging ratio curve is updated in time so as to output an aging detection result subsequently.
Wherein the life value represents a life degree represented by a structure in the steering system at a steering angle.
The invention realizes that the measured aging value is added into an aging curve corresponding to the aging ratio curve; and updating the aging ratio curve according to the aging curve added with the measured aging value and the preset service life curve, so that the effective measured aging value can be automatically added into the aging curve, and the aging ratio curve is automatically updated and obtained on the basis of the aging curve and the preset service life curve.
And deleting the measurement aging value when the measurement aging value does not fall into the historical aging matrix interval.
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 ratio curve is kept, namely the aging ratio curve is unchanged.
In an embodiment, the step S30 of determining the aging detection result of the vehicle steering system according to the updated aging ratio curve includes:
and acquiring a preset early warning threshold value and the maximum aging ratio value in the updated aging ratio curve.
Understandably, the preset early warning threshold is a threshold for setting early warning or reminding, the preset early warning threshold can be set according to requirements, for example, the preset early warning threshold can be an early warning or reminding value, or can be a plurality of early warning or reminding values, and the maximum aging ratio is the maximum value in the aging ratio corresponding to all steering angles in the aging ratio curve.
And determining the aging detection result according to the preset early warning threshold value and the maximum aging ratio value.
Understandably, when the maximum aging ratio is greater than or equal to the preset early warning threshold, the maximum aging ratio and early warning information corresponding to the preset early warning threshold are used as the aging detection result, and when the maximum aging ratio is less than the preset early warning threshold, the maximum aging ratio is used as the aging detection result.
The invention realizes the purpose that the maximum aging ratio value in the aging ratio curve is obtained by acquiring the preset early warning threshold value and updating; and determining the aging detection result according to the preset early warning threshold value and the maximum aging ratio value, so that the aging detection result of the aging condition of the vehicle steering system can be automatically output by combining the preset early warning threshold value and the maximum aging ratio value, the effect of timely early warning is achieved, the driving safety of the vehicle steering system is ensured, and the accuracy and the reliability of the output of the aging detection result of the vehicle steering system are improved.
In one embodiment, a vehicle steering system degradation detection device is provided, and the vehicle steering system degradation detection device corresponds to the vehicle steering system degradation detection method in the above embodiment one to one. As shown in fig. 3, the vehicle steering system degradation detection apparatus includes an acquisition module 11, a determination module 12, and a detection module 13. The functional modules are explained in detail as follows:
the obtaining module 11 is configured to obtain a steering torque value, a steering angle, and an aging ratio curve of a vehicle steering system;
the determining module 12 is configured to determine a measurement aging value according to the aging ratio curve, the steering torque value, and the steering angle;
and the detection module 13 is configured to update the aging ratio 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 ratio curve.
For specific limitations of the vehicle steering system degradation detection device, reference may be made to the above limitations of the vehicle steering system degradation detection method, which are not described herein again. The modules in the vehicle steering system aging detection device can be wholly or partially realized by software, relevant hardware in the vehicle and a combination thereof.
The invention provides a vehicle, which comprises a vehicle steering system and a control module connected with the vehicle steering system, wherein the control module executes the vehicle steering system aging detection method, the control module is a module for controlling all processors integrated in the vehicle, and the vehicle steering system is a system for controlling the vehicle to move such as running or reversing.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method of detecting degradation in a vehicle steering system, comprising:
acquiring a steering torque value, a steering angle and an aging ratio curve of a vehicle steering system;
determining a measurement aging value according to the aging ratio curve, the steering torque value and the steering angle;
and 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 updated aging ratio curve.
2. The vehicle steering system degradation detection method according to claim 1, wherein the determining a measurement degradation value based on the degradation proportion curve, the steering torque value, and the steering angle includes:
determining an aging ratio value to be processed according to the aging ratio curve and the steering angle;
determining an aging coefficient corresponding to the aging ratio to be processed according to a preset aging coefficient comparison table;
and determining the measurement aging value according to the aging coefficient, the steering torque value and the steering angle.
3. The vehicle steering system degradation detection method according to claim 2, wherein the determining the measured degradation value based on the degradation coefficient, the steering torque value, and the steering angle includes:
and obtaining the measurement aging value according to the aging coefficient, the steering torque value, the steering angle and a preset aging function.
4. The vehicle steering system degradation detection method according to claim 3, wherein the preset degradation function is:
y＝T×θ×k
wherein,
y is a measured aging value;
t is a steering torque value;
theta is a steering angle;
k is the aging factor.
5. The vehicle steering system degradation detection method according to claim 1, wherein the updating process of the degradation proportion curve based on the measured degradation value and the steering angle includes:
judging whether the measured aging value falls into 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 ratio curve according to the measured aging value;
and deleting the measurement aging value when the measurement aging value does not fall into the historical aging matrix interval.
6. The vehicle steering system degradation detection method according to claim 5, wherein the determining whether the measured degradation value falls within a history degradation matrix section corresponding to the steering angle includes:
acquiring a preset angle interval corresponding to the steering angle;
and generating the historical aging matrix interval according to the preset angle interval and the aging ratio curve.
7. The vehicle steering system degradation detection method according to claim 5, wherein said updating the degradation duty curve based on the measured degradation value includes:
adding the measured aging value to an aging curve corresponding to the aging ratio curve;
and updating the aging ratio curve according to the aging curve with the added measured aging value and a preset service life curve.
8. The vehicle steering system degradation detection method according to claim 7, wherein the determining the degradation detection result of the vehicle steering system based on the updated degradation proportion curve includes:
acquiring a preset early warning threshold value and the maximum aging ratio value in the updated aging ratio curve;
and determining the aging detection result according to the preset early warning threshold value and the maximum aging ratio value.
9. A vehicle steering system degradation detection apparatus, comprising:
the acquisition module is used for acquiring a steering torque value, a steering angle and an aging proportion curve of a vehicle steering system;
the determining module is used for determining a measurement aging value according to the aging ratio curve, the steering torque value and the steering angle;
and the detection module is used for 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 updated aging ratio curve.
10. A vehicle comprising a vehicle steering system and a control module coupled to the vehicle steering system, the control module performing the vehicle steering system degradation detection method of any of claims 1-8.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007161006A (en) * | 2005-12-12 | 2007-06-28 | Mitsubishi Electric Corp | Electric power steering control device |
| CN101017117A (en) * | 2007-02-28 | 2007-08-15 | 清华大学 | Durability testing stand of electric power-assisted steering system |
| CN106163903A (en) * | 2014-04-10 | 2016-11-23 | 捷太格特欧洲公司 | The estimation that power steering system is aging |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007161006A (en) * | 2005-12-12 | 2007-06-28 | Mitsubishi Electric Corp | Electric power steering control device |
| CN101017117A (en) * | 2007-02-28 | 2007-08-15 | 清华大学 | Durability testing stand of electric power-assisted steering system |
| CN106163903A (en) * | 2014-04-10 | 2016-11-23 | 捷太格特欧洲公司 | The estimation that power steering system is aging |
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