吉林大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (2): 407-414.doi: 10.13229/j.cnki.jdxbgxb20160789

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Braking performance of active collision avoidance system based on road identification

YUAN Chao-chun, ZHANG Long-fei, CHEN Long, HE You-guo, FAN Xing-gen   

  1. School of Automotive and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China
  • Received:2016-07-08 Online:2018-03-01 Published:2018-03-01

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Abstract: In order to overcome the difficulties caused by the difference of road surface conditions to the braking system, and improve the control of pressure hysteresis, a road peak adhesion coefficient identification algorithm was proposed and a single neuron PID pressure controller was designed. The influence of the road surface on the braking performance was deeply studied. The maximum braking force based on peak adhesion coefficient and the maximum strength brake of ABS were compared. The effectiveness of the identification algorithm was verified by Matlab/Simulink simulation, and the two kinds of pressure controller were compared. The performances of the two braking systems under different road adhesion conditions were analyzed. Results show that the identification algorithm has higher precision that the error is within 5%. The designed controller has faster response, smaller overshoot and no static error. With the deterioration of road adhesion condition, the ABS braking performance is decreased, while the braking system based on road identification still has good braking effect, which shows obvious advantages.

Key words: vehicle engineering, active collision avoidance, road identification, peak adhesion coefficient, braking performance

CLC Number: 

  • U461.3
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