Modelling and Simulation of Vehicle ESP System Based on CarSim and Simulink

Abstract

Abstract In this paper, the simulation of the vehicle ESP system is carried out, and the linear two-degree-of-freedom dynamic reference model of the vehicle is established in MATLAB/Simulink. Combined with the method of direct yaw moment control, the yaw rate and the yaw angle are selected as the control variables. Based on the fuzzy PID control theory, the control strategy of the ESP system is designed to calculate the additional yaw moment required when the vehicle deviates from the desired trajectory. In order to verify the effectiveness of the ESP system designed in this paper, the vehicle dynamics model in CarSim software is used to build a joint simulation platform of CarSim and Simulink, and the model is tested at a speed of 120 km/h on a double lane change road with low adhesion rate. The simulation results show that the designed controller can significantly improve the manoeuvrability and stability of the vehicle.