铁道罐车纵向冲击实验数据分析研究  

Analysis on experimental data of railway tank car longitudinal impact

作　　者：何友全[1] 李源[1] 易辉[1] 张济民[2] HE Youquan;LI Yuan;YI Hui;ZHANG Jimin(School of Information Science & Engineering, Chongqing Jiaotong University, Chongqing 400074, China;Institute of Railway and Urban Mass Transit, Tongji University, Shanghai 201804, China)

机构地区：[1]重庆交通大学信息科学与工程学院,重庆400074 [2]同济大学铁道与城市轨道交通研究院,上海201804

出　　处：《计算机工程与应用》2017年第4期233-237,共5页Computer Engineering and Applications

基　　金：国家自然科学基金(No.61174214);科技部重大仪器专项项目(No.2012YQ15021307)

摘　　要：考虑铁道罐车以及罐内装载的物体作为一个复杂系统,在运行时轮轨与轨道的相互作用下,研究车辆的安全问题,特别是罐车纵向加速度引起的问题显得相当复杂。为了分析罐车出现问题时的纵向加速度特性及故障原因,对正常信号和含故障的纵向加速度信号求互谱密度函数,找出共有纵向冲击频率,将该频率从含故障信号中滤除,反复数次,削弱故障信号中的正常运行的主要成分,最后通过加速度功率谱密度将纵向故障冲击频率从故障信号提取出来。Considering railroad tank cars and tank mounted object as a complex system, it is quite complex to study the problem of vehicle safety, especially the tanker problems caused by longitudinal acceleration under the interaction between wheel and rail tracks at run time. In order to analyze the causes of the problems and the characteristics of longitudinal acceleration when problems occurred, cross- spectral density function can be obtained by normal signal and longitudinal acceleration signal to find the total longitudinal impact frequency. Otherwise, the frequency is filtered out of the signal which contains faults, and repeated several times, the main components of the fault signal in the normal operation can be weaken. Finally, the longitudinal fault impact frequency can be extracted from the fault signal by the acceleration power spectral density.

关 键 词：铁道罐车 纵向冲击 数字滤波 功率谱密度 

分 类 号：U272.4[机械工程—车辆工程]