吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (2): 292-295.doi: 10.13229/j.cnki.jdxbgxb201402003

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Tire-road friction coefficient estimation based on steer-by-wire system

ZHENG Hong-yu1, CHEN Guo-ying1, SUN Lin-lin2, KONG Fan-sen2, HE Lei1, ZONG Chang-fu1   

  1. 1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
    2. College of Mechanical Science and Engineering, Jilin University, Changchun 130022, China
  • Received:2012-12-31 Online:2014-02-01 Published:2014-02-01

Abstract:

Statistics shows that tire-road friction coefficient is critical importance for vehicle active control system. This paper proposes a tire-road friction coefficient estimation method for advanced vehicle steer-by-wire system. A vehicle model is built and a model-based friction coefficient estimator is proposed using Expended Kalman Filter (EKF) technique, which can be used for estimation of vehicle self-align torque and road adhesion condition. Simulation and experiment under on-center handling and steering wheel angle step input conditions were carried out. The results demonstrate the effectiveness and robust of the proposed estimation.

Key words: vehicle engineering, tire-road friction coefficient, estimator, steer-by-wire

CLC Number: 

  • U463.4

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