磁悬浮双转子系统的定点碰摩特性

doi:10.3969/j.issn.1004-132X.2021.14.007

中国机械工程 ›› 2021, Vol. 32 ›› Issue (14): 1686-1699.DOI: 10.3969/j.issn.1004-132X.2021.14.007

磁悬浮双转子系统的定点碰摩特性

王东雄1,2;王念先1;陈奎生1

1.武汉科技大学机械自动化学院，武汉，430081
2.湖北汽车工业学院汽车工程学院，十堰，442002

出版日期:2021-07-25 发布日期:2021-08-04
通讯作者: 王念先（通信作者），男，1987年生，副教授、博士研究生导师。研究方向为磁悬浮支承技术、风力发电机技术、转子动力学。发表论文10篇。E-mail:wangnianxian1987@163.com。
作者简介:王东雄，男，1990年生，讲师。研究方向为磁悬浮支承技术和转子动力学。发表论文6篇。E-mail:ssrswdxiong@sina.com。
基金资助:
国家自然科学基金（51975427）；
湖北省自然科学基金（2019CFB460）；
湖北省青年科技晨光计划（2018B22）

Fixed-point Rubbing Characteristics of Magnetic Suspended Dual-rotor Systems

WANG Dongxiong1，2;WANG Nianxian1;CHEN Kuisheng1

1.College of Machinery and Automation，Wuhan University of Science and Technology,Wuhan,430081
2.School of Automotive Engineering，Hubei University of Automotive Technology,Shiyan,Hubei,442002

Online:2021-07-25 Published:2021-08-04

摘要/Abstract

摘要： 采用Lankarani-Nikravesh模型描述了磁悬浮双转子系统定点碰摩过程中的法向冲击力，基于有限元法建立系统动力学模型，并对碰摩故障下的系统振动特性及接触过程进行了分析。研究结果表明:内外转子的转频是其转频差的整数倍时，碰摩发生时可观察到转频差的整数倍频率分量，随着碰摩程度的加剧，分数阶转频差频率分量出现；碰摩过程中的最大接触深度和法向冲击力取决于初始冲击速度；选择使系统运行角速度远离临界角速度的比例系数或较大的微分系数可显著减小系统碰摩的严重程度。

关键词: 双转子系统, 主动磁悬浮轴承, 定点碰摩, Lankarani-Nikravesh模型

Abstract: Impact forces of magnetic suspended dual-rotor systems(MSDS) in fixed-point rubbing processes were described with Lankarani-Nikravesh model. Vibration characteristics and contact processes of the MSDS with fixed-point rubbing were analyzed based on MSDS dynamic model established with finite element method. Research results indicate that, when rotation frequencies of inner rotors and outer rotors are integer multiple of the rotational frequency difference, integer frequency components of rotational frequency difference are observed when rubbing occurs. As the degree of rubbing increases, the fractional frequency components of rotational frequency difference appear. Maximum contact depth and impact forces in the rub-impact processes depend on initial impact speed. Moreover, suitable proportional coefficient making the system angular velocity speeds far away from critical angular velocity and large differential coefficient may significantly reduce the severity of the rub-impact.

Key words: dual-rotor system, active magnetic bearing, fixed-point rubbing, Lankarani-Nikravesh model

中图分类号:

TH113.1

王东雄, 王念先, 陈奎生. 磁悬浮双转子系统的定点碰摩特性[J]. 中国机械工程, 2021, 32(14): 1686-1699.

WANG Dongxiong, WANG Nianxian, CHEN Kuisheng. Fixed-point Rubbing Characteristics of Magnetic Suspended Dual-rotor Systems[J]. China Mechanical Engineering, 2021, 32(14): 1686-1699.

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http://www.cmemo.org.cn/CN/Y2021/V32/I14/1686

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磁悬浮双转子系统的定点碰摩特性

Fixed-point Rubbing Characteristics of Magnetic Suspended Dual-rotor Systems

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