精密工学会誌
Online ISSN : 1882-675X
Print ISSN : 0912-0289
ISSN-L : 0912-0289
論文
電磁アクチュエータを用いたすべり軸受の不安定化力相殺による自励振動抑制
津野田 亘進士 忠彦藤原 浩幸松下 修己
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ジャーナル フリー

2018 年 84 巻 6 号 p. 584-588

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抄録

Oil film bearings have higher load capacity and larger damping than ball bearings. Therefore, the rotors of large turbomachines are usually supported by oil film bearings. However, at high rotational speeds, the swirling flow of the lubricant destabilizes the rotor system and induces self-excited vibrations such as oil whip and oil whirl. Since these vibrations limit the operational speed and reliability, a method for eliminating them and increasing the operational range is necessary. We propose a method for stabilizing these self-excited vibrations by using an electro-magnetic actuator to cancel the force due to the cross-coupled stiffness. This study demonstrated the experimental evaluation of the effectiveness in suppressing the self-excited vibration using the electro-magnetic actuator.

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