基于双重扰动观测器的PMSM改进无模型滑模控制  

Improved Model-free Sliding Mode Control of Permanent Magnet Synchronous Motor Based on Dual Disturbance Observer

作　　者：王栋栋 刘旭东[1,2] WANG Dongdong;LIU Xudong(School of Automation,Qingdao University,Qingdao 266071,China;Shandong Key Laboratory of Industrial Control Technology,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学自动化学院,山东青岛266071 [2]青岛大学山东省工业控制技术重点实验室,山东青岛266071

出　　处：《控制工程》2025年第2期354-361,共8页Control Engineering of China

基　　金：国家自然科学基金资助项目(52037005);中国博士后科学基金资助项目(2018M632622);山东省高校青年创新科技支持计划资助项目(2019KJN033)。

摘　　要：针对永磁同步电机控制系统存在的外部负载扰动、模型和参数不确定性等问题,提出一种基于改进无模型滑模控制的转速控制方法。首先,建立不考虑电机参数的永磁同步电机系统超局部模型;然后,基于改进滑模趋近律设计无模型滑模速度控制器,控制器采用转速-电流单环滑模控制策略,替代了传统的转速-电流级联控制,简化了控制系统结构;同时利用双重扰动观测器估计系统未知扰动,并用于前馈补偿;最后,与传统控制方法进行实验对比。结果表明,所提出的控制方法具有良好的动态性能、抗干扰能力和稳态控制精度。For the external load disturbance,model and parameter uncertainty in permanent magnet synchronous motor(PMSM)control system,a speed control method based on improved model-free sliding mode control is proposed.Firstly,an ultra-local model of the PMSM system without considering the motor parameters is established.Then a model-free sliding mode speed controller is designed based on the improved sliding mode reaching law.The controller adopts the speed-current single-loop sliding-mode control strategy to replace the traditional cascade control and the structure of the control system is simplified.The dual disturbance observer is used to estimate the unknown disturbance,which is used for feedforward compensation.Finally,the experimental comparison with the traditional control method is carried out,and the results show that the proposed control method has good dynamic performance,anti-interference ability and steady-state control accuracy.

关 键 词：永磁同步电机 超局部模型 无模型滑模控制 双重扰动观测器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]