弾性ロータ・磁気軸受系のVSSオブザーバを有する離散時間スライディングモード制御

概要

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This paper is concerned with the computer-based sliding-mode control of a flexible rotor-magnetic bearing system (FR-MBS). The plant dynamics, consisting of actuator dynamics and flexible rotor dynamics, are described. The reduced-order model for controller design is given by eliminating higher-order modes beyond the first flexible mode. A discrete time sliding-mode controller for the reduced-order model is proposed, and its robustness is evaluated with several simulations based on the mathematical model. This controller is implemented as an alternative to a conventional linear analog compensator. Several experiments on the proposed digital controller are carried out and compared with those on an analog compensator. The unstable modes can be easily controlled with good stability, and spillover phenomena due to ignored higher order modes do not appear. It is shows that the discrete time sliding-mode controller is robust enough for model parameter variations and external disturbances.
一般社団法人日本機械学会の論文
1994-01-25