ゼロパワー磁気軸受系の離散時間スライディングモード制御

概要

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This paper deals with the discrete time sliding mode control of a rotor-magnetic bearing system with a zero power scheme using a permanent magnet. We propose a new actuator in which the flux circuit of the zero power scheme using a permanent magnet can be varied. A mathematical model of the zero power scheme using permanent magnet and a flexible rotor is derived. The reduced-order model is described for the controller by eliminating higher-order modes of the mechanical and electrical magnetic interaction system beyond the fourth flexible mode, The sliding mode control system for this reduced-order model is designed using the discrete time VSS observer. The simulations are done for the two cases of life off and rotations The two unstable rigid modes can be easily controlled with good stability, and the spillover phenomena of the higher-order modes are not generated. It is also clear that the proposed discrete time sliding mode controller has robustness against model parameter variations and external disturbances, compared with the conventional control methods like PID control and disturbance cancellation control.
一般社団法人日本機械学会の論文
1996-03-25