Handling Stability Simulation Analysis of Vehicles with Active Front Wheel Steering

In this paper,the active front steering system model and the vehicle model were established. Then,aiming at different road adhesion coefficient,the step response and single lane change simulation of the vehicle under different vehicle speed and steering angle were conducted,considering vehicle with and without active steering,active steering intervention,respectively. The simulation results show that,in the case of step input,the yaw rate and side-slip angle increase,and the steering is more sensitive in low speed,the yaw rate and side-slip angle become smaller,and the steering is more stable and secure in high speed,under different road adhesion coefficient and steering angle. In the case of single lane change simulation,the actual steering angle increases because of the activesteering intervention under high road adhesion coefficient and small steering angle,and the manipulation is more sensitive and rapid in low speed change lanes,and the actual steering angle becomes smaller,and the manipulation is more stable and secure in high speed change lanes.