关键词: 电子稳定性程序;电动助力转向系统;多目标模糊决策;功能分配

Abstract: A 7DOF vehicle model and the function allocation control model of the automobile electronic stability program(ESP) system with electric power steering(EPS) are built, the parameter self-tuning fuzzy PID control of ESP is adopted and H∞ robust control is used for EPS. The function allocation controller is also designed by using multi-objective fuzzy decision to decide the function allocation coefficient of ESP and EPS controller. Under the double lane change conditions, the function allocation control is simulated based on Matlab/simulink software, whose results indicate that the function allocation control strategy of ESP and EPS can significantly improve the manipulation and lateral stability of the vehicle at high speed under emergency steering. The hardware-in-loop test is carried out, whose results are consistent with the results of simulation.

Key words: electronic stability program;electric power steering;multi-objective fuzzy decision;function allocation