ステータの運動を考慮した磁気軸受制御系の検討(<特集>D&D 2008)

概要

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This paper presents a control system for active magnetic bearings (AMBs) considering the motions of the stator. AMBs require active control for stable support of the rotor. Many control methods for AMBs have been proposed. Most of them are designed assuming that the stator is fixed on the base. However, in some applications, the stator moves with the object in which the AMB is mounted. In this paper, the transmittance from the stator motions to the relative motions of the rotor to the stator is investigated both theoretically and experimentally. Remarkable influences of stator motions have been observed at a low frequency range. As the gyroscopic effect becomes larger, they extend to higher frequency range. In addition, estimated signals from a disturbance observer are used to cancel the influences caused by the stator motions. It is shown that the effect of the cancellation depends on the estimation speed of the observer.
社団法人日本機械学会の論文
2009-05-25