基于无源性永磁同步电机模糊滑模控制系统研究

结合无源性控制和滑模控制两种非线性控制方法,并引入交流伺服系统,提出永磁同步电机(PMSM)的无源性滑模控制方法。文中分析了PMSM的无源性,并由此推导出矢量控制算法,采用滑模控制方法,设计了滑模速度控制器,从PMSM能量无源性的角度对控制器稳定性进行了证明,控制器参数由Lyapunov函数稳定性理论给出。针对滑模切换函数的高频"抖动"现象,采用模糊控制方法,设计了模糊切换函数,削弱了滑模切换函数的"抖动"。Simulink仿真和dSPACE实验结果表明:控制系统能够稳定运行,具有良好的动、静态性能和抗扰动能力。

Passivity-Based Fuzzy Sliding-Mode Control System and Experiment Research for Permanent Magnet Synchronous Motors

A novel passivity-based sliding-mode speed control system for vector-controlled PMSM drive was proposed. According to the strictly passivity of PMSM system, the vector control principle was derived. The sliding-mode control method was adopted to design the speed controller, and the stability of the controller was approved by the passivity theory, and the parameters of the controller was chosen appropriately based on the Lyapunov stability theory. The fuzzy control method was adopted to design a fuzzy switching function to replace the sliding mode signum function, and the chattering phenomenon was restrained greatly. The Simulink simulations and dSPACE experiments show the good performance of the control system, which is robust to the parameter variations and load break.