关键词: 永磁同步电机, SVPWM, 前馈控制器, 重复控制器

Abstract:

This paper designs and simulates a pointing mirror control system driven by permanent magnet synchronous motor (PMSM). The mathematical model of PMSM and space vector pulse width modulation are established and the corresponding simulation results are presented. Based on the model, a high accuracy controller which consists of current loop, velocity loop, and position loop is designed and simulated. Due to the inherent system uncertainties, various disturbances can affect the system accuracy. This paper proposes a position control scheme employing a feed-forward controller and a repetitive controller. Theoretical analysis and simulation experiments show that the designed pointing mirror control system has good dynamic characteristic with a short setting time, a fast dynamic response, and little position error.

Key words: PMSM, SVPWM, feed-forward controller, repetitive controller