Time-frequency processing of track irregularities in high-speed train

被引：40

作者：

Ning, Jing ^{[1
]}

Lin, Jianhui ^{[2
]}

Zhang, Bing ^{[2
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mech Engn, Chengdu 610031, Sichuan Provinc, Peoples R China

[2] Southwest Jiaotong Univ, Natl Tract Power Lab, Chengdu 610031, Sichuan Provinc, Peoples R China

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2016年 / 66-67卷

关键词：

Axle box acceleration; Time-frequency distribution; Detection; Rail irregularities; AXLE BOX ACCELERATION; RAIL INSPECTION; MAINTENANCE; SIMULATION; SYSTEM;

D O I：

10.1016/j.ymssp.2015.04.031

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Track irregularities are the main source of vehicle vibration. With the increase in the speed, the track irregularities have become a more significant issue of concerned. The axle box acceleration signals can be obtained for analyzing the track irregularities, but the signals are usually non-stationary and signal processing results are not normally satisfied with the ordinary way. Thus, time-frequency distribution analysis is proposed to use in this study. To minimize the cross-terms, a new method based on Empirical Mode Decomposition (EMD) and Cohen's class distribution has been developed and advanced. This approach has been tested with three typical simulation signals and then applied to analyze the track irregularities. The result is consistent with the result from track inspection cars. This indicates this new algorithm is suitable for analyzing the track irregularities. It can be applied in rail irregularity measurement to compensate some shortages of the track inspection cars. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：339 / 348

页数：10

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