Cargo vehicle ABS road identification method

An identification method and technology of trucks, which are applied in the direction of vehicle testing, measuring devices, instruments, etc., can solve the problems of high manufacturing cost and inability to obtain the quality of trucks

Inactive Publication Date: 2006-04-12
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

The present invention proposes a method for ABS road identification of trucks, the purpose of which is to solve the problems existing in the existing road identification methods that require a large amount of sample data for training, or that the method of comparing the theoretical deceleration of the wheel with the actual deceleration of the wheel cannot obtain the load. Disadvantages of car quality and high manufacturing cost

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  • Cargo vehicle ABS road identification method
  • Cargo vehicle ABS road identification method
  • Cargo vehicle ABS road identification method

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Embodiment Construction

[0007] The implementation process of the road surface identification method is described in detail in conjunction with the accompanying drawings and embodiments. figure 1 Shown is the flow chart of the ABS road identification method for trucks, and the steps are as follows:

[0008] 1. Use the wheel speed sensor to extract the wheel speed signal online during the braking process: the linear velocity v of the car and the angular velocity ω of the wheel to obtain the slip ratio of the four wheels in the car braking, and then calculate the wheel slip during braking according to the formula Rate: S = v - rω v × 100 % ,

[0009] where r is the rolling radius of the wheel when it is not subject to ground braking force.

[0010] 2. Obtain the braking torque generated by the automobile brake according to the gas pressure of the brake...

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Abstract

This invention relates to a road identifying method for the ABS of camion brakes, which takes the maximum speed of the wheel as the reference then computes the friction of each wheel endured by the earth based on the angular acceleration of the wheel then to compute the mass of the vehicle and its parameter in loading to get the positive pressure of the wheel so as to get the sticking coefficient of the earth, then to compute the slip ratio and the theoretical sticking coefficient of different roads under the current slip ratio according to a theoretical formula to compare the two coefficients to identify the situation of the road.

Description

technical field [0001] The invention belongs to the technical field of automobile electronic control, and in particular relates to a road surface identification method of ABS of a truck. Background technique [0002] The ABS automobile anti-lock braking system is an important electronic system to ensure that the wheels of the car do not lock during the braking process. Therefore, the ABS system must recognize the road conditions in real time. However, due to the limited number of sensors mounted on the car body, the only information that ABS can obtain is the speed of the wheels. Therefore, the ABS road recognition algorithm must be able to identify road information from limited information. For this reason, Chen Jun and others published "ABS Road Surface Recognition Based on Competitive Neural Network" in the Journal of Northeastern University in June 2003, Volume 24, Issue 6, using neural network technology for road surface identification technology, Journal of Agricultur...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007
Inventor 郑太雄李银国王平冯辉宗李锐
Owner CHONGQING UNIV OF POSTS & TELECOMM
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