Stability enhancement of a high-speed train bogie using active mass inertial actuators
Stability enhancement of a high-speed train bogie using active mass inertial actuators
复制标题
使用主动质量惯性执行器增强高速列车转向架的稳定性
DOI：
10.1080/00423114.2018.1469776
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发表时间：
2018
影响因子：
3.6
通讯作者：
Jian-Qiao Sun
中科院分区：
文献类型：
--
作者：
Yuan Yao;Guang Li;Yousef Sardahi;Jian-Qiao Sun
摘要本文提出了一种基于附加振子状态反馈的构架横向振动控制方法，以提高转向架蛇行稳定性。多目标优化方法（MOOP），与两个目标函数的稳定性指标和控制努力，通过NSGA-Ⅱ算法求解，以获得反馈增益。通过对某高速列车转向架进行线性和非线性分析，在考虑偏航阻尼器故障和控制系统时滞的情况下，构架横向振动控制能有效提高转向架蛇行稳定性。分析了振子悬挂参数和时滞对系统稳定性和鲁棒性的影响。结果表明，振子的阻尼振动频率应与转向架蛇行频率相等，但可采用较硬的振子悬挂来提高转向架控制系统的蛇行临界速度裕度。然而，正如如何直接反馈帧状态，一个硬的振荡器悬浮将导致在一定的时间延迟在控制系统中的不稳定。因此，在优化振子参数时，必须考虑提高转向架蛇行稳定性和降低控制系统稳定性的问题。以350 km/h列车转向架为研究对象，得到了附加振子的最优质量、固有频率和阻尼比。
ABSTRACT In this study, a method regarding frame lateral vibration control based on the state feedback of an additional oscillator is proposed, so as to improve the bogie hunting stability. The multi-objective optimisation method (MOOP), with two objective functions of the stability index and control effort, is solved by the NSGA-II algorithm to obtain the feedback gains. The frame lateral vibration control can effectively improve the bogie hunting stability according to the linear and non-linear analysis of a high-speed train bogie, in which a fault of the yaw damper and time delay in the control system are considered. The effect of the oscillator suspension parameters and time delay on the system stability and robustness are analysed. The results show that the damped vibration frequency of the oscillator should be equal to the bogie hunting frequency, but a harder oscillator suspension can be used to improve the hunting critical speed margin of the bogie control system. However, just as how the feeding the frame states back directly, a hard oscillator suspension will lead to instability in the control system at a certain time delay. Therefore, the improvement of bogie hunting stability and reduction of control system stability must be considered when optimising the oscillator parameters. For the 350 km/h train bogie covered in this study, the optimal mass, natural frequency and damping ratio of the additional oscillator are acquired.