Low Frequency Vibration Mechanism for AMB High-speed Motor Rotor Systems and Its Compensation Strategy

被引：0
|
作者：
Ji L. [1 ]
Ma X. [1 ]
Chen Z. [2 ]
机构：
[1] Information Engineering College, Hangzhou Dianzi University, Hangzhou
[2] ZYEC-EML Technologies Co., Ltd., Hangzhou
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2022年 / 33卷 / 17期
关键词：
active magnetic bearing(AMB) based motor; extended state observer(ESO); low frequency vibration; vibration suppression;
D O I：
10.3969/j.issn.1004-132X.2022.17.006
中图分类号：
学科分类号：
摘要：
In industrial applications, a nonsynchronous low frequency vibration occured frequently for high-speed motor systems with AMB. The low frequency vibration was analyzed from two aspects of mathematical model and external excitations. The results show that the low frequency vibration is determined by the natural frequency of the AMB control system, and it is excited by the external noise. Then the compensation strategy was present based on the ESO, and the stability of the AMBs control system was studied. For verification, the simulations and experiments regarding to low frequency vibration were carried out. The results show that under the same white noise excitation, the vibration amplitude of rotor with compensator decreases about 21% compared with that with PID controller. During the speed of 30 000 r/min, the compensator is more effective, and the vibration amplitude of the rotor is reduced by 26.6%. © 2022 China Mechanical Engineering Magazine Office. All rights reserved.
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页码：2053 / 2060
页数：7
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