• CN: 11-2187/TH
  • ISSN: 0577-6686

›› 2011, Vol. 47 ›› Issue (12): 92-98.

• Article • Previous Articles     Next Articles

Adaptive PID Controller with Variable Parameters for Vehicle Traction Control System

LI Liang;KANG Mingxin;SONG Jian;LI Hongzhi;HAN Zongqi;YANG Cai   

  1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University College of Vehicles and Energy, Yanshan University
  • Published:2011-06-20

Abstract: Reasonable control of the driving slip ratio is a premise to guarantee that the vehicle has good acceleration performance and stability. Based on the judgment of the driver’s acceleration intention, the driving slip ratio in the traction control system is mainly adjusted through controlling the engine torque output and the active brake pressure in the complicated road condition. Because of the time-varying of the drives intention and the road condition, it causes the change of the vehicle dynamics parameters and control system boundary condition, so this limits the application of the traditional PID controller. Hence, here we present a variable parameter adaptive PID control to adjust the driving wheel slip ratio under complicated driving conditions. According to the deviation between the desired slip ratio and current value, the controller can change the PID parameters adaptively in order to improve the quality of the controller. Based on the different parameter compound mode, the system can make switching among the engine torque control, the active brake control and the two mode coupling control to achieve the control of the driving wheel slip rate. The simulation and the road test verify the effectiveness of the proposed method.

Key words: Active braking, Adaptive control, Driving slip, Torque adjustment, Traction control system

CLC Number: