Adaptive control of multi-frequency bearing transmission force of multi-span rotors with hybrid bearings

被引：0
|
作者：
Xu H. [1 ]
Zhu C.-S. [1 ]
机构：
[1] College of Electrical Engineering, Zhejiang University, Hangzhou
来源：
Zhendong Gongcheng Xuebao/Journal of Vibration Engineering | 2021年 / 34卷 / 01期
关键词：
Electromagnetic actuator; Hybrid bearing; Multi-frequency bearing transmission forces; Multi-span rotors; Self-adaptive control;
D O I：
10.16385/j.cnki.issn.1004-4523.2021.01.019
中图分类号：
学科分类号：
摘要：
When a rotor of a rotating machinery rotates, a multi-frequency force transmitted to the base of the bearings will be produced by electromagnetic, fluid and mechanical excitations. In order to control the multi-frequency bearing transmission force of the rotor system, a hybrid bearing with controllable dynamic characteristics by using an electromagnetic actuator is introduced. A dynamic model of a multi-span rotor system is built by the finite element method, the bearing transmission force and the control principle of bearing transmission force are discussed. Then a sub-band filtering through error signal and parallel implementation for every controlled frequency based variable step-size adaptive iterative transmission force controller is proposed to the FxLMS algorithm. Finally, numerical simulation in a two shaft multi-span rotor system is carried out to demonstrate the effectiveness of the variable step-size adaptive iterative transmission force controller. It is shown that the variable step-size adaptive iterative transmission force controller proposed can effectively suppress the multi-frequency bearing transmission force by adjusting the control force of electromagnetic actuators in real time. © 2021, Editorial Board of Journal of Vibration Engineering. All right reserved.
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页码：166 / 175
页数：9
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