摘要
针对线性自抗扰控制器(LADRC)在永磁同步电机控制系统中面临参数整定困难,扰动剧烈变化时扩张状态观测器难以保证估计精度的问题,提出一种改进的自抗扰控制器。首先,采用扰动观测器对系统总扰动进行观测,并将观测扰动补偿到LADRC的线性扩张状态观测器(LESO)中,以此来降低LESO的扰动估计负担,提高估计精度;其次,通过线性解耦LESO,实现LADRC跟踪性能和抗扰性能的解耦,简化控制器的参数整定过程。仿真试验表明,采用改进LADRC控制的永磁同步电机系统参数调节简单,转速稳定恢复时间为0.01 s,突增负载时的转速波动为4%,具有更快的动态响应速度与更强的抗扰性能。
Aiming at the difficulties in parameter tuning and the difficulty in ensuring estimation accuracy of the extended state observer for linear active disturbance rejection control(LADRC) in permanent magnet synchronous motor(PMSM) control systems under severe disturbances,an improved LADRC is proposed.Firstly,a disturbance observer is used to observe the total disturbance of the system,and the observed disturbance is compensated to the linear extended state observer(LESO) of LADRC,in order to reduce the disturbance estimation burden of LESO and improve estimation accuracy.Secondly,by linearly decoupling LESO,the decoupling of LADRC tracking performance and disturbance rejection performance is achieved,simplifying the parameter tuning process of the controller.The simulation results show that the system parameters of the PMSM controlled by the improved LADRC are simple to adjust,the speed stability recovery time is 0.01 s,the speed fluctuation is 4% when the load is suddenly increased,and it has faster dynamic response speed and stronger anti-disturbance performance.
作者
朱金龙
王步来
陈东耀
ZHU Jinlong;WANG Bulai;CHEN Dongyao(School of Electrical and Electronic Engineering,Shanghai Institute of Technology,Shanghai 201418,China)
出处
《组合机床与自动化加工技术》
北大核心
2025年第2期97-101,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
上海市联盟计划项目(LM201876)。
关键词
永磁同步电机
自抗扰控制
扰动观测器
模型补偿
permanent magnet synchronous motor
active disturbance rejection control
disturbance observer
model compensation
