基礎励振を受ける磁気軸受-ロータ系の振動制御(機械力学,計測,自動制御)

概要

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When a magnetic bearing-rotor system is excited by ground motion, the rotor may come into contact with the stator because of its low stiffness and the system may suffer heavy damage. Although magnetic bearings are equipped with touchdown bearings for the emergencies such as earthquakes, it is better to design a controller which can restrain the foundation-excited response of a rotor within the designed gap. In PID control, gains have to be adjusted for many purposes and trade-offs in control performance will occur. Therefore, an acceleration feedforward control method is presented in this paper to reduce the response of the rotor system excited by ground motion without sacrificing other control performances. Applying this acceleration feedforward control to an experimental apparatus, the response of a rotor to ground motion is reduced to about half of the response with ordinary PID control. Furthermore, this suppression of the response is carried out with less control current.
一般社団法人日本機械学会の論文
1997-06-25