控制理论与应用2012，Vol.29Issue(5)：665-672,8.
无轴承扰动补偿悬浮系统的稳定性分析与验证
Stability analysis and verification for bearingless magnetic levitation system with disturbance rejection
摘要
Abstract
Although the PID control strategy is widely adopted in the bearingless magnetic levitation system, it is impossible to realize high performance in the levitation control due to the influences of disturbance to the levitation forces and the parameters perturbation, etc. To deal with this problem, we develop a novel bearingless levitation system by adding an extended state observer （ESO） to obverse the comprehensive disturbances, making the system able to compensate the disturbances in real-time. The mathematical model of the ESO is built based on the operating principle, and its stability is analyzed. On this basis, the principle of the parameter selection and the stable region of the parameters for the levitation control system are considered theoretically, thus a complete control scheme for the bearingless magnetic levitation system is presented. Additionally, the principle of the parameter adjustment in the nonlinear extended state observer is improved by considering the physical meanings of those parameters. Simulation verifies the significant contribution of the ESO to the disturbance reiection in the bearigless levitation system, and validates the orol~osed scheme for its ~arameters adiustment.关键词
无轴承电机/扩张状态观测器/扰动补偿/稳定性分析/参数调节Key words
bearingless motor/extended state observer/disturbance rejection/stability analysis/parameters adjusting分类
信息技术与安全科学引用本文复制引用
王晓琳,贺鹏..无轴承扰动补偿悬浮系统的稳定性分析与验证[J].控制理论与应用,2012,29(5):665-672,8.基金项目
国家自然科学基金资助项目（50977043）. （）
