An anti-lock braking control system for a hybrid electromagnetic/electrohydraulic brake-by-wire system

This paper presents a nonlinear sliding mode type controller for slip regulation in a braking event for a hybrid electromagnetic-electrohydraulic brake-by-wire system. The ABS controller modifies the brake torque command generated by a supervisory controller based on driver's command via brake pedal sensor. The brake torque command is then generated by closed loop actuator control algorithms to control the eddy current brake (ECB) and electrohydraulic brake (EHB) systems. The proposed control algorithm shows very good slip regulation in a braking event on low friction coefficient surfaces when compared with non-ABS braking. Usage of ECB resulted in a smooth ABS stop minimizing the NVH of current hydraulic ABS systems.