AFS를 이용한 SUV의 전복 방지 성능 개선을 위한 연구

This paper studies advanced AFS(Active Front Steering) controller for improvement in the rollover-prevention performance of SUV. The main idea of the AFS is to achieve the driving stability using the variable gear ratio and the steering stability using the direct yaw moment control. However, only with this basic function of SUV it is difficult to prevent the vehicle rollover. This paper contains suggestion of advanced variable gear ratio of the AFS controller using a function attained by setting up the handle angular velocity of vehicle that is added to the variable gear ratio which consists of a vehicle velocity function as an input. The interpreter for vehicle dynamics(CarSim) is used to verify suggested logic.