Development of ESP control strategy based on fuzzy control

摘要

Electronic Stability Programs (ESP) plays a significant role in improving vehicle safety. However, the development and calibration of ESP control strategy need a long time, as vehicle is a nonlinear and time-varying system. Fuzzy control is robust and does not need accurate mathematical model of control object, so it's suitable to apply fuzzy control to ESP. Based on fuzzy control, this paper proposes a kind of ESP control strategy. According to the current vehicle response characteristics, fuzzy controller decides the desired yaw moment. Pressure controller calculates the corresponding target pressure and controls the hydraulic control unit so that the braking pressure will follow the target pressure. In order to verify the effectiveness of proposed control strategy, double lane change test is carried out on hardware and driver-in-loop test bench. The simulation results show that the proposed control strategy can significantly improve the vehicle handling and stability.