A Robust Sliding-mode Control Strategy of Permanent Magnet Synchronous Motor

A global sliding mode variable structure controller based on fuzzy logic 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 control law is based on equivalent control, in which the function sign(·)is substituted for fuzzy control. Theoretical analyses and computation for the proposed fuzzy controller are described in details. Simulation show that the proposed fuzzy sliding mode controller provides high-performance dynamic characteristics and is robust with regard to eternal disturbance.