基于PCHD模型和滑模控制的表贴式永磁同步电机控制系统设计∗

摘要

In order to improve the stability, anti-interference and robustness of surface permanent magnet synchronous motor ( SPMSM) , the mathematical model of surface permanent magnet synchronous motor was established based on PCHD theory. The speed adjustment and estimation algorithm of surface permanent magnet synchronous motor were proposed on the basis of sliding mode control theory. And the speed sliding mode controller was designed. The motor speed was estimated by a sliding mode observer. Finally simulation experiments were carried out by using MATLAB. The simulation results showed that the actual speed and estimated speed could fit well and the speed tracking performance was better. This speed set and estimated strategy of control system had good anti-interference performance.%为提高表贴式永磁同步电机( SPMSM)系统的稳定性、抗干扰能力和鲁棒性，基于PCHD原理建立了表贴式永磁同步电机的数学模型。基于滑模控制理论，提出了一种表贴式永磁同步电机的速度调整和估计算法，并设计了速度滑模控制器；同时利用滑模观测器估计电机速度；最后采用MATLAB进行了仿真分析。仿真结果表明：电机估计转速与给定转速能够较好地吻合，电机速度跟踪性能较好，基于该速度调节和估计策略的控制系统具有较好的抗干扰性能。