A new sliding mode control for Permanent Magnet Synchronous Motor drive system based on reaching law control

In this paper, a sliding mode control based on reaching law control (RLC) is proposed for permanent magnet synchronous motors (PMSM) drive system. The PMSM is a typical multi-variable nonlinear system with strong coupling. It is sensitive to load disturbances and changes of interior parameters, so conventional PID control can't meet the application requirements where high performance is required. The PMSM drive system with the proposed control scheme can provide high-performance dynamic characteristics and robust to external load disturbance. The effectiveness of the sliding mode control method is demonstrated by computer simulation and experimental results.