高阶滑模消抖控制在永磁同步电动机中的应用

摘要

针对永磁同步电动机滑模控制系统抖振问题,利用具有消抖作用的高阶滑模控制算法,提出一种永磁同步电动机的高阶滑模控制策略.在对同步电动机非线性模型分析的基础上,进行反馈线性化解耦控制,设计基于高阶滑模算法的永磁同步电动机控制器.进行基于半物理仿真平台dSPACE的任意阶滑模控制的实验研究,并与传统滑模控制方法进行对比分析.分析结果表明,基于高阶滑模控制理论的永磁同步电动机系统,能有效消除传统滑模控制中固有的抖振问题.实验结果验证了该方法的可行性和有效性.%Aiming at the chattering problem to sliding mode control systems for permanent magnet syn chronous motor (PMSM) , a control strategy named as high order sliding control (HOSM) with chattering avoidance is presented. A feedback linearization technology was adopted for the nonlinear model of PMSM. After the decouple analysis, the high order sliding mode controller was designed for PMSM. The HOSM strategy is applied to PMSM experiments based on Dspace platform. Compared with traditional sliding mode control, HOSM control can remove system chattering and enhance the dynamic performance of the control systems. The experiment results verify the feasibility and effectiveness of the proposed strategy.