电机与控制应用2024，Vol.51Issue(3)：79-85,7.DOI:10.12177/emca.2023.189
基于非线性观测器的永磁同步电机位置估计算法研究
Research on Position Estimation Algorithm of Permanent Magnet Synchronous Motor Based on Nonlinear Observer
摘要
Abstract
In order to improve the estimation accuracy of rotor position and speed for sensorless control of the surface-mounted permanent magnet synchronous motor,an improved nonlinear observer is proposed.By reconstructing the mathematical model of the nonlinear observer,the error equation is constructed,and the stability of the error equation is analyzed by using Lyapunov theory.Based on the stability condition,an error step-size optimization method is proposed to realize the self-regulation of the step gain of the nonlinear observer.The simulation and experiment results show that the improved nonlinear observer has good dynamic performance,and the feasibility is verified.关键词
永磁同步电机/无位置传感器/非线性观测器/步长优化Key words
permanent magnet synchronous motor/sensorless/nonlinear observer/step-size optimization分类
信息技术与安全科学引用本文复制引用
张琳元,张清艺,张志锋..基于非线性观测器的永磁同步电机位置估计算法研究[J].电机与控制应用,2024,51(3):79-85,7.基金项目
国家自然科学基金(61603263)National Natural Science Foundation of China(61603263) （61603263）
