Abstract
This study proposes a new control system to enhance directional stability of small-scale electric vehicle by Steer-by-Wire (SBW) System. SBW has structure merits in avoiding interference between the driver and steering wheel since mechanical link between steering wheel and tire is replaced by electric wire system, consisting of sensors, steering actuators and controllers. To enhance stability against disturbance, steering control algorithm of SBW is proposed by using theory of disturbance observer. To improve straight-running stability, the controller is designed to regulate the yaw rate generated by asymmetric braking on μ-split road. The effectiveness of the proposed SBW is verified by computer simulation. Finally, the on-board system of experiment vehicle is introduced.
