高速动车组晃车现象的主动控制
黄立,曾京,李大地,干峰
(西南交通大学 牵引动力国家重点实验室,四川 成都 610031)
摘要:某型高速动车组在低速通过部分区段时产生晃车现象,具体表现为车体小幅、低频横向振动,通过线路试验测试数据分析其失稳机理,并提出在一系转臂节点处加装机电作动器,利用主动控制的方式改变转向架蛇行频率,避开车体的悬挂模态,解决晃车问题。结果表明:晃车现象是由于轮轨接触等效锥度降低或其他悬挂元件的老化所引起的转向架蛇行运动频率与车体悬挂模态频率耦合所导致的,利用主动控制的方法可有效改善晃车现象,降低列车运行平稳性指标,提高舒适度。
关键词:晃车;等效锥度;蛇行失稳;主动控制
中图分类号:TH134 文献标志码:A doi:10.3969/j.issn.1006-0316.2019.09.002
文章编号:1006-0316 (2019) 09-0007-05
Active Control for Coach Shaking of High-Speed EMU
HUANG Li,ZENG Jing,LI Dadi,GAN Feng
( State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China )
Abstract:For coach shaking phenomenon of high-speed EMU passing low-speed section which consists of small amplitude, low frequency lateral vibration, this article analyses instability mechanism according to road test data and proposes that active control can change the frequency of bogie hunting motion to prevent the coach from suspension mode and thus avoid  coach shaking. The result shows: coach shaking phenomenon is caused by frequency coupling of bogie hunting motion and coach suspension mode which is resulted by low equivalent conicity and suspension component aging. Active control can solve the problem of coach shaking  effectively, lower the standard of lateral smoothness and ride comfort.
Key words:car-body shaking;equivalent conicity;hunting motion inability;active control
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收稿日期:2019-03-11
基金项目:国家自然科学基金项目(11790282)
作者简介:黄立(1994-),男,山东滕州人,工学硕士,主要研究方向为车辆系统动力学及控制;曾京(1963-),男,湖南涟源人,工学博士,教授,主要研究方向为车辆系统非线性动力学和高速列车系统动力学。
 

 

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