无速度传感器的永磁同步电动机滑模控制

采用反演控制理论构造了永磁同步电动机的速度观测器,并运用滑模变结构控制理论设计了系统控制策略.该方法利用了反演控制稳定性强,动、静态性能优良的特点,设计的观测器结构简单、精度高、稳定性好.使用滑模控制理论设计系统总体控制方法,可以有效抑制负载和参数变化带来的扰动,从而提高了系统的鲁棒性.文章对所提出的控制策略进行了理论分析,并且通过Matlab进行了仿真实验.仿真结果表明,该控制方法有效地实现了电机的转速跟踪,具有良好的动、静态特性和鲁棒性.

Sensorless Control With Sliding-Mode Control for Permanent Magnet Synchronous Motors

In this paper a sensorless control scheme based on backstepping and the system control strategy based on sliding mode were used for permanent magnet synchronous motors (PMSMs).The designed observer strategy was simple,and of high precision and good stability by utilizing the backstepping control with merits of high stability and fine dynamic and static performance.The systemic control strategy designed by sliding mode control could reduce the disturbance of motor parameters and load and improve the robustness.The control strategy was analyzed in theory and simulated in Matlab.The simulation can realize the fine speed tracing performance of PMSM,and good dynamic and static performance as well as good robustness.