永磁同步电机无速度传感器控制系统研究

Study and Realization of Digital Permanent Magnet Synchronous Motor Sensorless System

介绍了一种基于TMS320LF2808型DSP芯片实现的无位置传感器永磁同步电机全数字控制系统。该系统采用滑模变结构观测器来获得转速和转子位置,与传统的观测算法相比,该方法低速时的转角估计误差显著减少。该系统充分利用了DSP片内资源丰富、运算速度快的特点。实验结果表明系统获得了良好的控制性能。

A digital sensorless control system based on DSP TMS320LF2808 for permanent magnet synchronous motor is introduced.Sliding mode observer （SMO）are adopted to obtain the rotor speed and position.Compared to conventional SMO,the estimation error of rotor position angle can be reduced in the low-speed range.The experimental results indicate the system can achieve excellent dynamic and static performance.