A Fuzzy Control Method to Improve Vehicle Yaw Stability Based on Integrated Yaw Moment Control and Active Front Steering

In this paper, a fuzzy control method is proposed to improve vehicle yaw stability by integrated yaw moment control and active front steering. This control system is designed by actively controlling the front steering angle and the distribution of braking forces, using feed-forward regulation and feedback revision control strategy, and a fuzzy controller is designed to suppress the output error of yaw rate and side slip angle, which can keep the vehicle to follow the desired trajectories. A simulation based on this control method is performed with a vehicle at two different running conditions, and the simulation results by other different control methods are compared also. The results showed that the presented method can effectively control the yaw rate and side slip angle synchronously, the transient and steady response of vehicle is good, the vehicle yaw stability is improved.