A method for real-time monitoring of wheel friction and estimation of maximum friction
A real-time monitoring and friction technology, applied to vehicle components, vehicle status input parameters, control devices, etc., can solve the problems of limited use, inaccurate results, high cost, etc., and achieve the effect of reducing vehicle cost and comprehensive calculation
Active Publication Date: 2022-02-18
DONGFENG MOTOR CORP HUBEI
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[0003] In view of the above defects or improvement needs of the prior art, the present invention proposes a method for real-time monitoring of wheel friction and estimating the maximum friction, which solves the technical problems of high cost, limited use and inaccurate results of the prior art
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[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0028] Such as figure 1 As shown, the embodiment of the present invention provides a method for real-time monitoring of wheel friction and estimating maximum friction, comprising the following steps:
[0029] S1: Obtain the parameters of the vehicle itself, collect the signal of the vehicle sensor, and obtain the acceleration of the vehicle body according to the signal of the vehicle sensor;
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The invention discloses a method for monitoring wheel friction in real time and estimating the maximum friction, belonging to the field of assisted driving, comprising: obtaining vehicle parameters, collecting vehicle sensor signals, and obtaining vehicle body acceleration according to the vehicle sensor signals; The body acceleration judges whether the currently acquired sensor signal can be used to calculate the friction force; if the currently acquired sensor signal can be used to calculate the friction force, then the slip rate and friction force are obtained from the sensor signal; determine whether the slip rate and friction force satisfy Preset requirements, if the slip rate and friction force meet the preset requirements, estimate the maximum friction force according to the slip rate and friction force. The present invention utilizes the existing sensor signals of the automobile to not only obtain the real-time friction force but also estimate the maximum friction force situation.
Description
technical field [0001] The invention belongs to the field of driving assistance, and more specifically relates to a method for real-time monitoring of wheel friction and estimating the maximum friction. Background technique [0002] Road friction is critical to vehicle performance and stability. Therefore, the detection of road friction is a function that should not be lacking in the vehicle detection system. At present, most of the methods for estimating the friction force use relevant sensors to measure tire-related parameters and calculate the friction force. This type of method will increase the cost of the car, and the use of sensors is subject to more conditions, which is very inconvenient and inaccurate; and it is impossible to estimate the maximum friction. Contents of the invention [0003] In view of the above defects or improvement needs of the prior art, the present invention proposes a method for real-time monitoring of wheel friction and estimating the maxi...
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IPC IPC(8): B60W40/068
CPCB60W40/068B60W2520/105B60W2530/20B60W2530/10B60W2520/28B60W2510/18B60W2510/10
Inventor 罗宜鸣边宁余龙张翼
Owner DONGFENG MOTOR CORP HUBEI