控制理论与应用2026，Vol.43Issue(4)：821-831,11.DOI:10.7641/CTA.2024.40341
含执行器故障的磁轴承转子位置有限时间容错控制
Finite-time fault tolerant control of magnetic bearing rotor position with actuator faults
摘要
Abstract
This paper presents a novel finite-time fault-tolerant tracking control strategy.This strategy addresses the infinite-time convergence issues inherent in conventional sliding mode control,which reduces the high design costs and large size associated with traditional fault-tolerant control approaches.The proposed strategy is specifically tailored to enhance rotor position tracking control in active magnetic levitation bearing systems.It ensures robust performance in the presence of external disturbances and actuator failures.The strategy integrates two key components:An extended state observer(ESO)and a non-singular fast terminal sliding mode.Firstly,an ESO is designed to estimate the aggregate perturbation term of the magnetic bearing system.This term includes internal and external perturbations,as well as actuator faults.The observer enables system perturbation compensation and decoupling.Secondly,a non-singular fast terminal sliding mode surface is introduced,followed by the design of a finite-time fault-tolerant controller.The stability and finite-time convergence of the designed controller are then analyzed and proven by using Lyapunov functions.Finally,the effectiveness and superiority of the designed controller are verified by simulation experiments.关键词
磁悬浮轴承/位置控制/滑模控制/扩张状态观测器/执行器故障Key words
magnetic levitation bearing/position control/sliding mode control/expanded state observer/actuator faults引用本文复制引用
付强,陈洪,谢七月..含执行器故障的磁轴承转子位置有限时间容错控制[J].控制理论与应用,2026,43(4):821-831,11.基金项目
国家自然科学基金项目(62373067)资助. Supported by the National Natural Science Foundation of China(62373067). （62373067）
