基于积分滑模控制器的PMSM调速系统

针对传统PI调节器鲁棒性差、抗干扰能力弱、容易受诸多因素影响以及永磁同步电机存在不确定性和负载扰动等问题,通过对永磁同步电机数学模型的分析,并结合滑模变结构控制理论,在永磁同步电机矢量控制系统的基础上,设计了一种积分滑模控制器。分析表明,在常规滑模面中引入状态量的积分量,可增强系统的抗扰动能力。仿真结果表明,所提方法具有较好的抗扰动能力,提高了调速系统的鲁棒性,改善了系统的动态性能。

PMSM Speed Regulation System Based on the Integral Sliding Mode Controller

In view of the fact that the traditional PI regulator has such flaws as poor robustness, weak anti-interference ability and liability to be affected by other factors, uncertainty and load disturbance in permanent magnet synchronous motor, combined with the analysis of mathematical model of PMSM and sliding mode variable structure control theory, an integral sliding mode controller has thus been designed based on PMSM vector control system. The analysis shows that the introduction of the integration of the state quantity into the conventional sliding mode surface will help to enhance the anti-disturbance ability of the system. The simulation results show that the proposed method exhibits better anti-disturbance performance, which improves the robustness of the speed control system, as well as the dynamic performance of the system.