基于自适应滑模观测器的PMSM无传感器控制  

Sensorless Control for PMSM Based on Adaptive Sliding Mode Observer

作　　者：赵仙花[1] 夏宇敬[1] 高兴超[1] 史振萍[1] 吴延霞[1] Zhao Xianhua;Xia Yujing;Gao Xingchao;Shi Zhenping;Wu Yanxia(School of Energy and Mechanics,Dezhou University,Dezhou City,Shandong Province 253023,China)

机构地区：[1]德州学院能源与机械学院,山东省德州市253023

出　　处：《农业装备与车辆工程》2021年第12期84-87,共4页Agricultural Equipment & Vehicle Engineering

摘　　要：针对传统滑模滑模观测器中几种典型趋近律的系数不具有自调整功能,对于不同位置状态变量,其收敛性能不佳以及非奇异滑模控制当系统远离平衡点时收敛速度慢、动态性能差的问题,引入sigmoid函数构建了一种用于永磁同步电机无传感器控制的自适应非奇异终端滑模观测器,实现对转子转速和位置的观测,并利用Lyapunov函数进行了稳定性分析。通过MATLAB/Simulink对控制系统进行了仿真实验。结果表明,自适应非奇异终端滑模观测器观测精度高、收敛速度快、鲁棒性好,同时有效消除了系统的抖振现象。Aiming at the problems that coefficients of several typical approaches laws in traditional sliding mode observer can not adjust automatically,the convergence performance is not good for different position state variables,and convergence speed of non-singular sliding mode control is low when the system is far from equilibrium points,and dynamic performance is poor,a novel adaptive nonsingular terminal sliding mode observer with Sigmoid function is designed to estimate the speed and position of motor rotor for sensorless control of permanent magnet synchronous motor,and the stability of the system is proved using Lyapunov function.Finally,the control system is established by Simulink.The simulation results show that designed adaptive nonsingular terminal sliding mode observer has the advantages of higher observation accuracy,faster convergence and higher robustness with less oscillation.

关 键 词：PMSM 无传感器控制 自适应滑模观测器 SIGMOID函数 

分 类 号：TM351[电气工程—电机]