Hunting stability analysis of high-speed train bogie under the frame lateral vibration active control
Hunting stability analysis of high-speed train bogie under the frame lateral vibration active control
复制标题
车架横向振动主动控制下高速列车转向架摆动稳定性分析
DOI：
10.1080/00423114.2017.1375128
复制
发表时间：
2018-02
影响因子：
3.6
通讯作者：
Sun Jian-Qiao
中科院分区：
文献类型：
--
作者：
Yao Yuan;Wu Guosong;Yousef Sardahi;Sun Jian-Qiao
摘要 在本文中，我们研究了三种不同的构架振动控制配置的多目标优化设计，并比较了它们在提高高速列车转向架横向稳定性方面的性能。在……中时滞的存在
ABSTRACT In this paper, we study a multi-objective optimal design of three different frame vibration control configurations and compare their performances in improving the lateral stability of a high-speed train bogie. The existence of the time-delay in the control system and its impact on the bogie hunting stability are also investigated. The continuous time approximation method is used to approximate the time-delay system dynamics and then the root locus curves of the system before and after applying control are depicted. The analysis results show that the three control cases could improve the bogie hunting stability effectively. But the root locus of low- frequency hunting mode of bogie which determinates the system critical speed is different, thus affecting the system stability with the increasing of speed. Based on the stability analysis at different bogie dynamics parameters, the robustness of the control case (1) is the strongest. However, the case (2) is more suitable for the dynamic performance requirements of bogie. For the case (1), the time-delay over 10 ms may lead to instability of the control system which will affect the bogie hunting stability seriously. For the case (2) and (3), the increasing time-delay reduces the hunting stability gradually over the high-speed range. At a certain speed, such as 200 km/h, an appropriate time-delay is favourable to the bogie hunting stability. The mechanism is proposed according to the root locus analysis of time-delay system. At last, the nonlinear bifurcation characteristics of the bogie control system are studied by the numerical integration methods to verify the effects of these active control configurations and the delay on the bogie hunting stability.
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