摘要：This paper presents a novel speed control technique for an permanent magnets synchronous (MSAP) drive based on newly Nonlinear backstepping technique. The most appealing point of it is to use the virtual control variable to make the high-order system simple, and thus the final control outputs can be derived step by step through appropriate Lyapunov functions Backstepping control approach is adapted to derive the control scheme, which is robust to parameter uncertainties and external load disturbance. Simulation results clearly show that the proposed controller can track the speed reference signal successfully under parameter uncertainties and load torque disturbance rejection
