数据驱动的高速铁路轮轨作用力反演模型  

A wheel⁃rail force inversion model for high⁃speed railway

作　　者：罗金屯 滕飞[1] 周亚波 池茂儒[2] 张海波 Luo Jintun;Teng Fei;Zhou Yabo;Chi Maoru;Zhang Haibo(School of Information Science and Technology,Southwest Jiaotong University,Chengdu,611756,China;State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu,610031,China;Department of Computer Science,University of Otago,Dunedin,9054,New Zealand)

机构地区：[1]西南交通大学信息科学与技术学院,成都611756 [2]西南交通大学牵引动力国家重点实验室,成都610031 [3]奥塔哥大学计算机科学系,但尼丁,9054,新西兰

出　　处：《南京大学学报（自然科学版）》2021年第2期299-308,共10页Journal of Nanjing University（Natural Science）

基　　金：国家重点研发计划(2018YFB1201701);四川省科技计划(2019YJ0214)。

摘　　要：轮轨作用力是列车对轨道状态的激励响应,是列车安全监控的重要信息指标,对保证列车的行车安全意义重大.现有的轮轨力采集设备存在容易磨损、使用周期短等问题,导致数据采集困难,使用成本高昂;而列车的振动信号数据则更容易采集,利用振动信号来反演轮轨力一直是相关研究的热点和重点.但常见的轮轨力反演方法大多基于模型驱动,识别精度低,且辨析条件较为苛刻,难以真正应用于工程实践.结合振动信号和轮轨力的数据特性,提出一种数据驱动的轮轨力反演模型.经过实验验证,在直线轨道工况下,相关系数可达0.9911,而目前传统模型最好结果仅为0.82;在传统模型较难处理的曲线轨道工况下,相关系数也能达到0.9754,与动力学仿真结果高度拟合,为列车轮轨力的安全监测提供了一种新的方案.The wheel⁃rail force is the train's excitation response to the track state,and is an important information indicator for train safety monitoring.It is of great significance for ensuring the safety of trains.Existing wheel⁃rail force collection equipment has problems such as easy wear and short use period,which leads to difficulties in data collection and high cost of use.In comparison,the vibration signal data of the train is easier to collect.The use of vibration signals to invert wheel⁃rail force has always been a hotspot and focus of related researches.However,the common wheel⁃rail force inversion methods are mostly based on model⁃driven with low recognition accuracy and harsh discrimination conditions,which are difficult to truly apply in engineering practice.Combining the vibration signal and the data characteristics of wheel⁃rail force,this paper proposes a data⁃driven wheel⁃rail force inversion model.After experimental verification,the correlation coefficient can reach 0.9911 under the linear track condition,while the best result of the current traditional model is only 0.82.Under the curve track condition which is difficult to handle with the traditional model,the correlation coefficient can also reach 0.9754.It is highly fitted with the dynamic simulation results,and provides a new scheme for the safety monitoring of train wheel⁃rail force.

关 键 词：轮轨力反演 数据驱动 深度学习 振动信号 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]