永磁同步交流伺服电机无传感器控制方法

Shaft Sensorless Control of Permanent Magnet Synchronous Motor Servo System

提出了一种基于观测器理论的永磁同步电机无传感器控制方法。转子位置通过对磁通的估计而获得，速度反馈信息则通过一个闭环状态观测器进行估计，整个控制策略由一片ＤＳＰ３２０Ｃ２５执行，仿真表明，该方法在稳态、暂态条件下均能获得较好的结果。

This paper presents a position and velocity sensorless control algorithm based on observer theory. Rotor position can be attained by flux linkage and line current estimation. A colsed￣loop state observer is implemented to compute the speed feedback signal.The control is rea￣lized by software using TMS DSP320C25. Experiment results on a SPM are reliable in both steady and transient states.