Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Variable Parameter Sliding Controller Design for Vehicle Brake with Wheel Slip

  • Liang, Hong (Faculty of Electronics and Information, Chonbuk National University) ;
  • Chong, Kil-To (Faculty of Electronics and Information, Chonbuk National University)
  • Published : 2006.11.01
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Abstract

In this paper, a 4-wheel vehicle model including the effects of tire slip was considered, along with variable parameter sliding control, pushrod force as the end control parameter, and an antilock sliding control, in order to improve the performance of the vehicle longitudinal response. The variable sliding parameter is made to be proportional to the square root of the pressure derivative at the wheel, in order to compensate for large pressure changes in the brake cylinder. A typical tire force-relative slip curve for dry road conditions was used to generate an analytical tire force-relative slip function, and an antilock sliding control process based on the analytical tire force-relative slip function was used. A retrofitted brake system, with the pushrod force as the end control parameter, was employed, and an average decay function was used to suppress the simulation oscillations. Simulation results indicate that the velocity and spacing errors were slightly larger than the results that without considering wheel slip effect, the spacing errors of the lead and follower were insensitive to the adhesion coefficient up to the critical wheel slip value, and the limit for the antilock control on non-constant adhesion road condition was determined by the minimum of the equivalent adhesion coefficient.

Keywords

References

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