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.
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页码：124 / 128
页数：4
相关论文
共 10 条
  • [1] SCHWEITZER G, MASLEN H., pp. 11-12, (2012)
  • [2] TUCKMANTEL F, CAVALCA K., Vibration signatures of a rotor-coupling-bearing system under angular misalignment, Mechanism & Machine Theory, 133, pp. 559-583, (2019)
  • [3] VERUCCHI C, BOSSIO J, BOSSIO G, Et al., Misalignment detection in induction motors with flexible coupling by means of estimated torque analysis and MCSA [J], Mechanical Systems and Signal Processing, 80, pp. 570-581, (2016)
  • [4] REDDY M, SEKHAR A., Detection and monitoring of coupling misalignment in rotors using torque measurements [J], Measurement, 61, pp. 111-122, (2015)
  • [5] LI Ming, LI Zigang, Theoretical and experimental study an dynamics of rotor-bearing system with the faults of coupling misalignment, Journal of Vibration, Measurement & Diagnosis, 2, pp. 155-161, (2015)
  • [6] JIANG Lingli, CHEN Yumeng, LI Xuejun, Et al., Vibration analysis of dual-rotor system with coupling misalignment, Mechanical Science and Technology for Aerospace Engineering, 38, 9, pp. 1350-1356, (2019)
  • [7] PANG Zhiyuan, PAN Honggang, XIAO Zenghong, Et al., Off-center vibration characteristics and experimental study of multi-span rotor system coupling, Turbine Technology, 61, 5, pp. 337-342, (2019)
  • [8] HUANG Zhiwei, ZHOU Jianzhong, ZHANG Yongchuan, Dynamic analysis on hydraulic generator rotors with coupling faults of misalignment and rub-impact, Proceedings of the CSEE, 30, 8, pp. 88-93, (2010)
  • [9] LI Hong, WANG Tuoyu, ZHENG Shiqiang, Research on multi-frequency vibration of magnetically suspended high-speed motor based on FxLMS algorithm, Journal of Harbin University of Science and Technology, 20, 2, pp. 28-34, (2015)
  • [10] FENG Rui, ZHENG Shiqiang, FANG Jiancheng, Online identification and unbalanced vibration control of high-speed magnetically levitated motor for drag test, Journal of Mechanical Engineering, 50, 3, pp. 71-77, (2014)
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