バイアス電源電流波形を用いたセルフセンシング磁気軸受の新たな電流干渉補償方式

概要

論文の詳細を見る
A new improvement technique for position sensing characteristics of self-sensing active magnetic bearings (AMBs) is proposed. In self-sensing AMBs, the electromagnets work not only as actuators for suspending a rotor but also as position sensors. However, the current that controls the suspending force influences the position sensing because of the nonlinear magnetic characteristics of the electromagnet. Conventional methods for compensation of the current interference complicate the AMB systems and adjusting their parameters becomes difficult. The method proposed in this paper uses bias source current measurement and demodulating timing adjustment. This simple method effectively achieves the compensation of the current interference and offer good position sensing characteristics.
社団法人電気学会の論文
2009-05-01