永磁同步电动机基于滑模与自抗扰控制研究

Research on the Control Strategy of Permanent Magnet Synchronous Motor Based on Sliding Mode and Active Disturbance Rejection Double-Loop Control

为了解决永磁同步电动机传统滑模控制中抖振大、抗干扰能力差等问题,提出一种基于新型趋近律的滑模控制方法。利用李雅普诺夫函数证明其稳定性,并与传统的指数趋近律进行性能对比。将新型滑模控制器应用到永磁同步电动机矢量控制的转速环,有效地提高了动态响应时间,消除了启动超调,但在突变转速时依然有超调,为了进一步提升控制性能,设计一种新型fal函数的自抗扰控制器并应用到交轴电流环。仿真结果表明,所提方法相比传统滑模控制有效提升了响应速度,减小了静态误差,增强了抗干扰能力和控制精度。

To solve the problems of large chattering and poor anti-interference ability in the traditional sliding mode control of permanent magnet synchronous motor,a sliding mode control method based on a new reaching law is proposed.The Lyapunov function is used to prove its stability,and the performance is compared with the traditional exponential reaching law.The new sliding mode controller is applied to the speed loop of the permanent magnet synchronous motor vector control,which effectively improves the dynamic response time and eliminates the start-up overshoot.A new type of active disturbance rejection controller with fal function and applied to quadrature current loop.The simulation results show that the proposed method effectively improves the response speed,reduces the static error,and enhances the anti-interference ability and control accuracy compared with the traditional sliding mode control.