Dynamic characteristics of magnetic bearing system with coupling misalignment

被引：0

作者：

Yao R. ^{[1
]}

Zhou J. ^{[1
]}

Guan X. ^{[1
]}

Wu H. ^{[1
]}

Xu Y. ^{[1
]}

机构：

[1] College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing

来源：

Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis | 2022年 / 42卷 / 01期

关键词：

Active magnetic bearings; Coupling misalignment; Shaft center trajectory; Spectrum analysis;

D O I：

10.16450/j.cnki.issn.1004-6801.2022.01.019

中图分类号：

学科分类号：

摘要：

Large-scale magnetic levitation rotating machinery with multi-span rotors often require couplings to connect the rotors. Misalignment of the coupling will affect the stability of the rotor motion and even cause serious accidents. To make sure of the system stability, it is necessary to carry out research on the influence of coupling misalignment on the dynamic characteristics of the rotor. By equating the coupling misalignment to the rotational force exerted on the rotor, a mathematical model of the magnetic suspension rotor system with coupling misalignment is established. The axis track and vibration frequency spectrum of the rotor are simulated and analyzed based on this model, the relationship between the second-harmonic signal of rotor displacement and the rotation speed and the coupling misalignment is given. The experimental results show that at a certain speed, the amplitude of the second-harmonic displacement signal increases linearly by 1.53 μm for every 0.1 mm of coupling misalignment. © 2022, Editorial Department of JVMD. All right reserved.

引用

页码：124 / 128

页数：4

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