The High-quality Tracking Control of an IPM Synchronous Motor Drive Using the Double-Regulation Control Mechanism

In this paper, we consider the problem of high-quality output tracking control of an interior permanent-magnet (IPM) synchronous motor drive. Because the system may be interfaced by uncertainties and/or disturbances, we employ the method of double-regulation control mechanism which can be summarized as follows: Firstly, for the system which contains uncertainties and disturbances, we design the integral feedback by introducing a dynamic mechanism to adjust its gain so that the disturbances and uncertainties can be eliminated. Secondly, for the remaining parts of the system, we choose another proper error feedback mechanism, especially with using certain kinds of nonlinear characteristics, to ensure the required performance. Lyapunov analysis is provided to guarantee the stability of the relevant control system. It is the method that we can not only use simple structure to reject disturbance but also obtain high-quality control performance without using any extra estimators. Simulation results for tracking the desired outputs indicate the effectiveness of the proposed method.