추정된 제동력을 이용한 강인한 휠 슬립 제어기 설계

Recently, wheel slip controllers with controlling the wheel slip directly has been studied using the brake-by-wire actuator. The wheel slip controller is able to control the braking force more accurately and can be adapted to various different vehicles more easily than the conventional ABS systems. The wheel slip controller requires the information about the tire braking force in order to achieve the control performance. In this paper, the tire braking forces are estimated considering the variation of the friction between brake pad and disk due to aging of the brake, moisture on the contact area or heating, and the robust wheel slip controller is designed using sliding mode control based on the estimated tire braking force. The performance of the proposed control system is evaluated in various simulations.