Control of magnetic levitation positioning stage with an eddy current damper  

作　　者：王伟明 闪明才 马树元 唐水源 

机构地区：[1]School of Mechanical Engineering,Beijing Institute of Technology [2]School of Quality and Technical Supervision,Hebei University

出　　处：《Journal of Beijing Institute of Technology》2012年第3期315-320,共6页北京理工大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China (60674052)

摘　　要：To enhance the system damping,a permanent magnet set which served as an eddy current damper was added to the magnetic levitation positioning stage which consists of a moving table,four Halbach permanent magnetic arrays,four stators and displacement sensors.The dynamics model of this stage was a complex nonlinear,strong coupling system which made the control strategy to be a focus research.The nonlinear controller of the system was proposed based on the theory of differential geometry.Both simulation and experimental results show that either the decoupling control of the movement can be realized in horizontal and vertical directions,and the control performance was improved by the damper,verifying the validity and efficiency of this method.To enhance the system damping,a permanent magnet set which served as an eddy current damper was added to the magnetic levitation positioning stage which consists of a moving table,four Halbach permanent magnetic arrays,four stators and displacement sensors.The dynamics model of this stage was a complex nonlinear,strong coupling system which made the control strategy to be a focus research.The nonlinear controller of the system was proposed based on the theory of differential geometry.Both simulation and experimental results show that either the decoupling control of the movement can be realized in horizontal and vertical directions,and the control performance was improved by the damper,verifying the validity and efficiency of this method.

关 键 词：magnetic levitation（maglev） positioning stage eddy current damper nonlinear control feedback linearization 

分 类 号：TB535.1[理学—物理]