339 バックステッピング法による非線形ゼロパワー磁気軸受制御(アドバンスト制御理論応用III)(OS アドバンスト制御理論応用)

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In this paper, we propose the new type of zero power nonlinear control of a magnetic bearing. Since a magnetic bearing supports the rotor by un-contacting, it has many advantages. However, because a magnetic bearing system is originally unstable system, feedback control is indispensable. Therefore the price of the equipment itself is more expensive than mechanical bearing and besides, high running cost is needed. In this study, we especially focus on reducing a runnning cost and propose the new low dissipation type design of control system in this paper. The conventional method of designing a control system for a magnetic bearing is based on linear control theory. But designing the control system by Backstepping method which is nonlinear control theory, it becomes unnecessary to use bias currents which is used for linearlizing a nonlinear magnetic bearing system and is possible to realize the control system with little energy loss compared with the conventional control. The effectiveness of this method is shown by simulation and experiment.
2001-04-20