Fractional order adaptive sliding mode controller for permanent magnet synchronous motor

In this paper, a novel fractional order adaptive sliding mode controller (FOASMC) is designed to realize the speed control of a permanent magnet synchronous motor (PMSM) with matched model uncertainties and load disturbances . Unlike the conventional case, a novel fractional order sliding surface is proposed to obtain better dynamic performances and robustness. Furthermore, adaptive switching law is utilized to guarantee the sliding surface be reached in finite time with the upper bound of uncertainties and disturbances unknown. Simulation results are finally presented to demonstrate the effectiveness of proposed method.