基于改进模型辅助ESO的磁轴承-转子系统自抗扰控制  

Active Disturbance Rejection Control of Magnetic Bearing-Rotor System Based on Improved Model Assisted ESO

作　　者：王浩 龙志强[2] 丁明强[1,2] 王屹华 WANG Hao;LONG Zhiqiang;DING Mingqiang;WANG Yihua(Northwest Institute of Mechanical and Electrical Engineering,Xianyang 712099,China;College of Intelligence Science and Technology,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]西北机电工程研究所,陕西咸阳712099 [2]国防科技大学智能科学学院,长沙410073

出　　处：《轴承》2024年第7期132-137,共6页Bearing

基　　金：国家自然科学基金重点项目(52332011)。

摘　　要：为降低磁轴承-转子系统运行过程中多种干扰对控制系统控制精度和稳定性的影响,进一步提高磁轴承抗扰能力,提出一种基于改进模型辅助的自抗扰控制方法。建立轴向磁轴承-转子系统数学模型,将模型信息引入扩张状态观测器(ESO)的设计中,提出一种线性/非线性切换模型辅助扩张状态观测器(SMESO),并使用等效增益法分析了SMESO的稳定性,通过仿真试验对比MESO与SMESO的自抗扰控制器在阶跃与正弦扰动下的抗扰能力,结果表明基于SMESO的自抗扰控制方法具有更快的响应速度和更强的抗扰能力。In order to reduce the influence of various disturbances on control accuracy and stability of control system during operation of magnetic bearing-rotor system,and further improve the disturbance rejection ability of magnetic bearing,an improved model assisted active disturbance rejection control method is proposed.A mathematical model of axial magnetic bearing-rotor system is established,and the model information is introduced into design of extended state observer(ESO).A linear/nonlinear switch model assisted extended state observer(SMESO)is proposed,and the stability of SMESO is analyzed using equivalent gain method.The disturbance rejection ability of active disturbance rejection controllers of model assisted extended state observer(MESO)and SMESO under step and sinusoidal disturbances is compared through simulation experiments,the results indicate that the active disturbance rejection control method based on SMESO has faster response speed and stronger disturbance rejection ability.

关 键 词：滑动轴承 磁力轴承 干扰 控制算法 响应时间 抗扰特性 

分 类 号：TH133.31[机械工程—机械制造及自动化] TP273.2[自动化与计算机技术—检测技术与自动化装置]