机械制造与自动化2026，Vol.55Issue(2)：61-65,5.DOI:10.19344/j.cnki.issn1671-5276.2026.02.012
基于H∞控制的高温磁悬浮轴承控制方法研究
Research on Control Method of High Temperature Magnetic Bearing Based on H∞ Control
摘要
Abstract
To overcome the increasesing uncertainty of magnetic bearing-rotor system due to the parameter changes of air gap between stator and rotor,coil permeability and rotor Young's modulus caused by temperature rise,this paper designs an H∞ controller running stably in a wide temperature range in terms of enhancing the robustness of the system.The dynamic modeling of magnetic suspension rotor is carried out,and the radial four-degree-of-freedom model of rotor is obtained,which is decoupled into four-way single-degree-of-freedom model.The influence of temperature on the magnetic bearing-rotor system is analyzed,an equivalence to the increase of system uncertainty,and H∞ controller is selected to suppress the uncertainty introduced by temperature.With the introduction of mixed sensitivity problem,and the design problem of the controller is transformed into the selection of three weighting functions,the transfer function of the controller is obtained by solving,and the performance of the designed controller is simulated and tested.The research results show that the H∞ controller can ensure the stable suspension of the rotor from normal temperature to 450 ℃,and has stronger resistance to external low-frequency interference and stronger robustness compared with PID controller.关键词
高温/磁悬浮轴承/H∞控制器/系统不确定性Key words
high temperature/magnetic bearing/H∞ controller/system uncertaint分类
机械制造引用本文复制引用
赵瑞瑾,金超武,徐园平,辛宇,周扬..基于H∞控制的高温磁悬浮轴承控制方法研究[J].机械制造与自动化,2026,55(2):61-65,5.基金项目
航空发动机及燃气轮机基础科学中心重点项目(P2022-B-Ⅲ-004-001) （P2022-B-Ⅲ-004-001）
