Nonlinear Decoupling Based Adaptive Control of Permanent Magnet Synchronous Motors Drive System

This paper discusses application of nonlinear decoupling algorithm for a permanent magnet synchronous motors with adaptive control, capable of combining the input-output linearization technique and Lyapunov stability theory. Based on the Lyapunov stability theory, the adaptation law of the proposed controller is derived along with the verification of the overall system´s stability. Computer simulation results demonstrate that the proposed controller is robust and it can ensure transient stability of permanent magnet synchronous motors, under the occurrence of the disturbance caused parameter variations such as load and stator resistor.