JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A 2023 Vol.24 No.7 P.625-636

http://doi.org/10.1631/jzus.A2200127

Bogie active stability simulation and scale rig test based on frame lateral vibration control

Author(s): Yadong SONG, Hu LI, Jun CHENG, Yuan YAO
Affiliation(s): State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China
Corresponding email(s): yyuan8848@163.com
Key Words: Railway vehicle, Bogie, Active stability, Scale test rig, Time-delay

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Abstract: This paper puts forward a high-speed train bogie active stability method, based on frame lateral vibration control, for improving the stability and critical speed of railway vehicles at high speeds. Two inertial actuators apply active control forces to the front and rear end beams of the bogie frame. A scale model of bogie lateral dynamics is established, as well as the state space equation of the control system. Also, the multi-objective optimization is used to construct state feedback parameters, which take hunting stability and control effort into account. Furthermore, the effects of time-delay in the control system and suspension parameters on bogie hunting stability are studied. The dynamic behaviors and the stability mechanism of the bogie control system are analyzed. Finally, a 1:5 scale test rig is used to conduct a bogie active stability experiment. The results reveal that active control of frame lateral vibration can effectively improve the bogie system’s hunting stability margin at high speeds, but time-delay in the control system cannot be ignored.

基于构架横向振动的转向架主动稳定性仿真与滚动比例试验台实验研究

作者：宋亚东，李虎，程俊，姚远
机构：西南交通大学，牵引动力国家重点实验室，中国成都，610031
目的：本文提出了一种基于构架横向振动控制的高速列车转向架主动稳定性方法，来提高铁路车辆高速运行时的稳定性和临界速度。
创新点：1.通过转向架横向动力学模型，根据构架振动反馈控制策略，建立了转向架动力学主动控制系统，利用两个惯性做动器直接向构架的前后端梁施加主动控制力；2.搭建了转向架1:5比例滚动试验台，对仿真结果进行实验验证。
方法：1.仿真模拟，建立了转向架横向动力学主动控制系统的状态空间方程，对不同控制参数和时滞下系统稳定性进行仿真分析；2.理论分析，研究了控制时滞和悬挂参数对转向架稳定性的影响机理；3.实验分析，通过转向架1:5比例的滚动试验台进行主动稳定性试验验证。
结论：1.本文提出的构架横向振动主动控制可以有效地提高转向架系统在高速下的蛇行稳定裕度，其中构架速度反馈比位移反馈对稳定性的影响更大；2.控制系统中的时滞对稳定性影响机理不同，较小的延迟（5 ms左右）会导致构架振动的高频模态失稳，而较大的延迟（30 ms以上）会导致转向架低频的蛇行模态失稳；3.考虑主动悬挂系统时滞，原有的被动悬挂参数对转向架稳定性的影响也会发生改变（图5）。

关键词：铁路车辆；转向架；主动稳定性；比例试验台；时滞分析

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