基于扩张状态观测器的永磁同步电机滑模控制

针对永磁同步电机对外部负载扰动和参数变化比较敏感的控制问题,研究了一种基于扩张状态观测器和趋近律的滑模控制方法.该方法首先对扩张状态观测器进行了设计,然后分别建立了基于扩张状态观测器和趋近律的滑模控制,并用双极S型函数代替符号函数用以削弱滑模抖振,最后对稳定性进行了证明.仿真结果表明:设计的控制方法不仅具有很强的鲁棒性和强抗干扰能力,而且响应速度快,控制精度高.

Sliding Mode Control of Permanent Magnet Synchronous Motor Based on Extended State Observer

In order to solve the control problem that the permanent magnet synchronous motor is sensitive to the external load disturbance and parameter variation,a sliding mode control method based on extended state observer and exponential reaching law is studied.The extended state observer is designed,and then the sliding mode control based on the extended state observer and approaching law is established respectively,and the bipoler S-type function is used instead of the symbolic function to weaken the chatter in sliding mode.Finally the stability is proved.The simulation results show that the control method not only has strong robustness and strong anti-interference ability,but also has high response speed and high control precision.