吉林大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (06): 1478-1481.

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Control algorithm for vehicle electronic stability program based on brake wheel cylinder hydraulic pressure estimation

LI Jing1,SHA Hong-liang1,WANG Bo-ping2,LIU Wei1,LIU Guan-ting1   

  1. 1.State Key Laboratory of Automobile Dynamic Simulation,Jilin University,Changchun 130022,China;2.Department of Flight Theory, Aviation University of Air Force of PLA,Changchun 130022,China
  • Received:2008-06-07 Online:2010-11-01 Published:2010-11-01

Abstract:

A vehicle wheel hydraulic cylinder pressure estimation algorithm was presented based on query mode, and a control algorithm of brake actuator with pressure feedback was devised for electronic stability program(ESP). The relationship between the duty ratio of wheel cylinder solenoid valves for increasing and decreasing pressure and the pressure in the wheel cylinder was established using hardwareintheloop tests. A wheel hydraulic cylinder pressure estimation algorithm was achieved. The tests showed that the estimated cylinder pressures are in good agreement with their actual values, and the proposed ESP with feedback by estimated pressure improves the vehicle handling and stability performance at extreme steering conditions.

Key words: vehicle engineering, electronic stability program, brake wheel cylinder pressure, estimation algorithm, hardware-in-the-loop test, handling and stability performance

CLC Number: 

  • U463.5
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