非线性磁悬浮转子系统的不平衡响应分析  

Unbalance Response Analysis of Nonlinear Magnetic Levitation Rotor System

作　　者：刘明政 葛萍萍 张雁翔 姚俊夫 王念先[1,2] LIU Mingzheng;GE Pingping;ZHANG Yanxiang;YAO Junfu;WANG Nianxian(Mechanical Engineering and Automation College,Wuhan University of Science and Technology,Wuhan 430081,China;Key Laboratory for Metallurgical Equipment and Control of Ministry of Education,Wuhan 430081,China;Shaoguan Hydraulic Parts Factory Co.,Ltd.,Shaoguan 512000,China)

机构地区：[1]武汉科技大学机械自动化学院,武汉430081 [2]冶金装备及其控制教育部重点实验室,武汉430081 [3]韶关液压件厂有限公司,广东韶关512000

出　　处：《轴承》2022年第3期47-52,共6页Bearing

基　　金：国家自然科学基金资助项目(51975427);湖北省自然科学基金资助项目(2019CFB460)。

摘　　要：考虑漏磁及磁饱和等非线性因素对磁悬浮轴承支承特性的影响,建立非线性磁悬浮转子系统动力学模型,分析运行参数和控制参数对系统不平衡响应的影响,结果表明:负载较大时,非线性磁悬浮转子系统不平衡响应更复杂;相同转速范围内非线性磁悬浮转子系统更易失稳;比例系数较大和微分系数较小会使非线性磁悬浮转子系统振幅增大,不平衡响应明显。Considering the influence of nonlinear factors such as magnetic flux leakage and magnetic saturation on support characteristics of magnetic levitation bearing,the dynamic model of nonlinear magnetic levitation rotor system is established,and the influence of operating parameters and control parameters on unbalanced response of the system is analyzed.The results show that the unbalance response of nonlinear magnetic levitation rotor system is more complex when the load is large;the nonlinear magnetic levitation rotor system is more prone to instability within same speed range;larger scale coefficient and smaller differential coefficient will increase the amplitude and make the unbalance response obvious.

关 键 词：滑动轴承 磁力轴承 转子 不平衡 运行参数 控制参数 

分 类 号：TH133.31[机械工程—机械制造及自动化] O313[理学—一般力学与力学基础]