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Cargo vehicle ABS road identification method

A technology for trucks and road surfaces, which is applied in vehicle testing, measuring devices, instruments, etc., can solve the problems of inability to obtain the quality of trucks and high manufacturing costs

Inactive Publication Date: 2007-08-01
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

Method used

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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 will now be described in detail with reference to the accompanying drawings and embodiments. Figure 1 shows the flow chart of the truck ABS road surface identification method. The steps are as follows:

[0008] 1. Use the wheel speed sensor to extract the wheel speed signal during braking online: the linear velocity ν of the car, the wheel angular velocity ω, obtain the slip rate 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 represents the rolling radius when the wheel is not subjected to ground braking force.

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

[0011] Obtain empirical values ​...

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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 method for identifying the ABS road surface of a truck. Background technique [0002] ABS automobile anti-lock braking system is an important electronic system to ensure that the wheels do not lock up during braking. In order to ensure that the wheels do not lock up and at the same time brake at a faster speed, ABS must be used differently for different road conditions. Therefore, the ABS system must recognize the road surface 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 the road surface information from the limited information. For this reason, Chen Jun et al. published "ABS Pavement Recognition Based on Competitive Neural Network" in the Journal of Northeastern Universit...

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Application Information

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Patent Type & Authority Patents(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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