吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (5): 1240-1246.doi: 10.7964/jdxbgxb201405003

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Test and application of hydraulic control unit in automotive traction control system

ZHAO Jian1, ZHANG Jin1,ZHU Bing1,2, WU Jian1   

  1. 1.State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
    2.Key Laboratory of Bionic Engineering of Ministry of Education, Jilin University, Changchun 130022, China
  • Received:2013-07-22 Online:2014-09-01 Published:2014-09-01

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Abstract: In order to modify the hydraulic brake pressure accurately for Traction Control System (TCS), a Hydraulic Control Unit (HCU) test system based on dSPACE was developed. Using this system, the characteristic parameters of HCU valves were identified, and the relationship between the desired pressure gradient and target duty cycle in Pulse Width Modulation (PWM) brake control was obtained. In addition, the experiment and analysis results were used in the sliding-mode-based traction control algorithm and the wheel brake control logic based on target pressure gradient was proposed. The algorithm was verified using Matlab/Smulink and AMESim co-simulation. The results show that the proposed active brake control algorithm can provide high accurate regulation of wheel slip ratio, thus, the vehicle driving performance can be improved effectively.

Key words: vehicle engineering, traction control system, brake pressure regulation, test identification, pulse width modulation, sliding mode control

CLC Number: 

  • U463.5
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