关键词: 主动前轮转向；滑膜控制；横向稳定性；联合仿真

Abstract: In order to improve the operating stability and safety of the vehicle, an active front steering (AFS) controller is constructed. Firstly, the vehicle lateral stability controller is designed according to the lateral deflection angle of the center of mass and the lateral stability coefficient, and the intervention time of the active front wheel steering controller is judged. Then, with yaw speed as input parameter, an active front wheel steering controller is designed by using variable structure synovial control theory. The additional front wheel angle is calculated, and the adjusted front wheel angle is combined with the final output of the steering system. Finally, through the co-simulation, the results show that the designed controller can improve the lateral performance of the vehicle well and ensure the lateral stability of the vehicle.

Key words: Active front wheel steering; Sliding mode control; Lateral stability; Co-simulation