光学精密工程2012，Vol.20Issue(3)：563-570,8.DOI:10.3788/OPE.20122003.0563
基于滑模扰动观测器的磁轴承主动振动控制
Vibration suppression of magnetic bearing based on sliding mode disturbance observer
摘要
Abstract
As rotor imbalance can lead to the synchronous disturbances of Magnetically Suspended Control Moment Gyroscopes (MSCMG) , and can reduce the attitude control accuracy and the load accuracy of spacecrafts, A general control strategy based on a sliding mode disturbance observer was proposed to minimize the synchronous vibration caused by unbalance on a rotor. First, a dynamics model of the magnetic bearing-rotor system was set up and the sliding mode observer used for disturbance observation was designed. Then, a Tracking Differentiator (TD) was used to estimate the differential signals from a displacement sensor to obtain the velocity signals and to reduce orders of the observer. Finally, according to the synchronous force estimated by the disturbance observer, a controller was designed to compensate the vibration caused by unbalance of the rotor. Simulation and experimental results demonstrate the effectiveness of the proposed approach and the vibration has been decreased by 72%.关键词
磁轴承/振动控制/扰动观测器/变结构控制/微分跟踪器Key words
magnetic bearing/ vibration suppression/ disturbance observer/ variable structure control/tracking-differentiator分类
航空航天引用本文复制引用
韩邦成,崔华,汤恩琼..基于滑模扰动观测器的磁轴承主动振动控制[J].光学精密工程,2012,20(3):563-570,8.基金项目
国家自然科学基金资助项目(No.61174134) （No.61174134）
国家973重点基础研究发展计划资助项目(No.2009CB72400103) （No.2009CB72400103）
中央高校基本科研业务费专项资金资助项目(No.YWF-11-02-255) （No.YWF-11-02-255）
