Abstract: To achieve the steering angle tracking performance of a novel steeringbywire system, an adaptive fuzzy sliding mode control (AFSMC) scheme is proposed. Traditional sliding mode control needs to get the system disturbance in advance, while AFSMC can estimate system disturbance in real time by online fuzzy adaptive system, and hence weaken the switching signal in control law, reducing the conservativeness and chattering phenomena of control system. Simulation results show that the steeringbywire system with AFSMC has satisfying steering angle tracking performance, robustness and energy efficiency.

Key words: vehicle, steeringbywire, sliding mode control, adaptive fuzzy control