偏心量对缓冲环支撑下的电磁轴承转子系统非线性振动特性影响分析  

Influence of Eccentricity on Nonlinear Vibration Characteristics of AMB Rotor System Supported by Buffer Ring

作　　者：滕汉卿 穆然[1] Teng Hanqing;Mu Ran(Hunan Railway Professional Technology College,Zhuzhou412001,China)

机构地区：[1]湖南铁道职业技术学院,湖南株洲412001

出　　处：《科学技术创新》2022年第27期114-117,共4页Scientific and Technological Innovation

基　　金：2019年湖南省教育厅科学研究项目:电磁轴承转子系统双参数非线性动力学特性研究(19C1212)。

摘　　要：建立了电磁轴承转子系统动力学模型,通过对系统双参数平面图、分岔图及轴心轨迹图的分析,研究了偏心量作为控制参数时系统的非线性振动特性,研究发现在转子偏心量增加过程中,系统在双参数域[U∈(10.2-15.0),Ω∈(3.0-3.5)]范围内出现了周期性运动与混沌、概周期运动交替出现的舌形岛状区域,在岛状区域顶端U=10.2附近参数域内系统运动特性发生了突变,同时在Ω∈(1.98-2.25)区间内,偏心量适当增加反而有利于转子系统获得更宽的周期性运动转速区间。The dynamic model of AMB rotor system is established,the nonlinear vibration characteristics of the system with eccentricity as the control parameter are studied by analyzing the two parameter plane diagram, bifurcation diagram and axis trajectory diagram of the system,the research shows that in the process of increasing the rotor eccentricity, there is a tongue shaped island region in which periodic motion, chaos and almost periodic motion alternate in the two parameter domain [U∈(10.2-15.0),Ω∈(3.0-3.5)],there is a sudden change in the motion characteristics of the system in the parameter domain near the top of the island region U=10.2.At the same time, in the interval of Ω∈(1.98-2.25), the appropriate increase of eccentricity is conducive to the rotor system to obtain a wider periodic speed range.

关 键 词：偏心量 双参数域 分岔 

分 类 号：TH113.1[机械工程—机械设计及理论]