中国机械工程

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[BIM模型与智能设计]中低速磁浮系统起浮阶段的振动特性分析

陆海英1;韩霄翰2;李忠继3;何翔4;刘开成2;陈志贤2   

  1. 1.中车长春轨道客车股份有限公司,长春,130062
    2.西南交通大学牵引动力国家重点实验室,成都,610031
    3.中铁二院工程集团有限责任公司,成都,610031
    4.中铁第四勘察设计院集团有限公司,武汉,430063
  • 出版日期:2019-02-10 发布日期:2019-02-18
  • 基金资助:
    国家重点研发计划资助项目(2018YFB1201600)

Analysis of Vibration Characteristics of Low-medium Speed Maglev Levitation Systems in Lifting Stages

LU Haiying1;HAN Xiaohan2;LI Zhongji3;HE Xiang4;LIU Kaicheng2;CHEN Zhixian2   

  1. 1.CRRC Changchun Railway Vehicles Co.,Ltd.,Changchun,130062
    2.State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu,610031
    3.China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu,610031
    4.China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan,430063
  • Online:2019-02-10 Published:2019-02-18

摘要: 为了研究电磁悬浮(EMS)中低速磁浮系统在起浮阶段的悬浮稳定性问题,建立了“车辆-电磁-轨道梁”耦合系统动力学模型。利用仿真模型分析了EMS中低速磁浮系统在起浮阶段的振动响应特性,对比分析了弹性梁与刚性梁的振动差别,仿真分析了单级悬浮控制与双级悬浮控制的效果差异。结果表明:EMS中低速磁浮列车在弹性轨道梁上起浮时,容易发生悬浮失稳的异常振动现象,原因是单级悬浮控制模式的悬浮架自激振动频率激发了弹性轨道梁的固有频率,从而诱发了车轨剧烈耦合共振;提高轨道梁刚度或采用双级悬浮控制器模式,可以缓解EMS中低速磁浮系统起浮阶段异常振动引起的悬浮失稳现象。

关键词: 车轨耦合振动, 电磁悬浮, 中低速磁浮, 动力学模型 , 悬浮控制器

Abstract: In order to study the suspension stability of EMS low-medium spead maglev levitation in the lifting stages, the coupling dynamics models of “vehicle-electromagnetism-track beam” were established. The vibration response characteristics of EMS low-medium speed maglev systems were analyzed by using the simulation models, and the vibration differences between the elastic beam and rigid beam were compared. The differences between single-stage suspension control and two-stage suspension control were simulated. The results show that the lifting stages of the maglev trains are more prone to suspension instability on the elastic beams, maglev train abnormal vibrations are easy to occur; The reasons are that the self-excited vibration frequencies of suspension frames motivate the natural frequencies of elastic track beams, which induces the strong coupling resonance of the train tracks. Increasing the stiffness of track beams or adopting the two-stage suspension controller model may alleviate the abnormal vibrations of the suspension instability during EMS low-medium speed maglev levitation in the lifting stages.

Key words: vehicle-rail coupled vibration; electromagnetic maglev suspension(EMS), low-medium speed maglev levitation, dynamics model, suspension controller

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