基于改进型非奇异模糊终端滑模观测器的PMSM无传感器控制

Sensorless Control of PMSM Based on Improved Nonsingular Fuzzy Terminal Sliding Mode Observer

针对传统非奇异终端滑模控制收敛速度不够快的问题,设计了一种改进型非奇异终端滑模面。为了减弱滑模观测器(SMO)的固有振抖,以模糊控制的思想对其控制增益进行了实时优化。为解决传统锁相环不能同时很好地兼顾动态性能和稳态性能的问题,按照前馈补偿的思想设计了一种新型锁相环。最后,在Matlab/Simulink中对永磁同步电机(PMSM)无传感器控制系统进行了仿真,分析结果表明了所改进算法的正确性和有效性。

In order to overcome the shortcoming that the convergence speed of the traditional non singular terminal sliding mode control is not fast enough,an improved non singular terminal sliding mode surface was designed. In order to weaken the natural vibration of the sliding mode observer（SMO）,the control gain is optimized in real time by the idea of fuzzy control. In order to overcome the problem that the traditional phase locked loop can not give consideration to both dynamic performance and steady state performance at the same time,a new type of phase-locked loop is designed by the idea of feedforward compensation. Finally,the sensorless control system of permanent magnet synchronous motor（PMSM） was simulated in Matlab/Simulink,and the simulation results show the correctness and effectiveness of the proposed methods.