一种高速列车蛇行分岔图和频率的快速算法  

Fast Algorithm for Hunting Bifurcation Diagram and Frequency of High-speed Trains

作　　者：姜成英 罗仁[1] JIANG Chengying;LUO Ren(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《机械制造与自动化》2022年第4期92-95,共4页Machine Building & Automation

基　　金：国家自然科学基金项目(U2034210,11790282);牵引动力国家重点实验室自主研究课题(2019TPL-T15)。

摘　　要：提出一种快速计算高速列车蛇行运动分岔图和蛇行频率的方法。运用降速法通过动力学仿真计算车辆横向位移,采用滑移窗口取极值点的方法计算位移包络线,得到蛇行运动分岔图;根据过零点搜索计算蛇行频率。在Simpack软件中建立某高速拖车非线性动力学模型,通过降速法计算车辆在典型工况下的蛇行运动分岔图和蛇行频率。结果表明:所提算法能够有效剔除异常值,快速得到的蛇行运动分岔图和频率曲线光滑,满足高速列车优化设计和性能预测的需求。An algorism for fast calculating the hunting bifurcation diagram and hunting frequency of high-speed trains is proposed.The deceleration-speed algorism is adopted to work out the lateral displacement of the vehicle by dynamic simulation,and sliding-window is applied to calculate displacement envelope by extreme point extraction method obtaining the hunting bifurcation diagram.The hunting frequency is determined by the zero-crossing search.The nonlinear dynamic model of a high-speed trailer car is established in Simpack,and the vehicle's hunting bifurcation diagram and hunting frequencies under typical operating conditions are calculated by deceleration-speed simulation.The results show that the proposed algorithm can effectively eliminate the outliers,quickly work out the hunting bifurcation diagram and smooth frequency curve,which meets the requirements of optimal design and performance prediction for high-speed trains.

关 键 词：高速列车 蛇行运动 分岔图 蛇行频率 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]