A PMSM Sliding-mode Control System Based-on Exponential Reaching Law

A global sliding mode variable structure controller based on exponential reaching law is adopted to Permanent magnet Synchronous Motor. First, the controller can ensure sliding behavior throughout an entire response, we can specify the demands on the capability of the system to achieve a desired performance. Moreover, the controller is based on exponential reaching law, which overcome the drawbacks that we should give the range of the coefficient when confirm the controller in conventional sliding mode control. Theoretical analyses and computation for the proposed controller are described in details .Simulation show that the proposed sliding mode controller provides high-performance dynamic characteristics and is robust with regard to eternal disturbance.