Study on rail fastener loosening identification based on wavelet packet energy spectrum

ZHOU Wen-jing; LIU Chong; WEI Jia-hong; ZHANG Kai; ZHANG Xue-hai

doi:10.13873/j.1000-9787(2017)05-0040-04

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Study on rail fastener loosening identification based on wavelet packet energy spectrum

更新时间：2025-09-11

- Study on rail fastener loosening identification based on wavelet packet energy spectrum
- Vol. 36, Issue 5, Pages: 40-43(2017)
- 作者机构：
  
  1. 大连理工大学机械工程学院
  2. 大连理工大学辽宁省微纳米技术及系统重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-9787(2017)05-0040-04
  CLC： U216.3
- Published：2017
- 稿件说明：
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[1]周文静,刘冲,韦佳宏,张凯,张学海.基于小波包能量谱的钢轨扣件松脱检测研究[J].传感器与微系统,2017,36(05):40-43.

ZHOU Wen-jing, LIU Chong, WEI Jia-hong, et al. Study on rail fastener loosening identification based on wavelet packet energy spectrum[J]. 2017, 36(5): 40-43.
[1]周文静,刘冲,韦佳宏,张凯,张学海.基于小波包能量谱的钢轨扣件松脱检测研究[J].传感器与微系统,2017,36(05):40-43. DOI： 10.13873/j.1000-9787(2017)05-0040-04.

ZHOU Wen-jing, LIU Chong, WEI Jia-hong, et al. Study on rail fastener loosening identification based on wavelet packet energy spectrum[J]. 2017, 36(5): 40-43. DOI： 10.13873/j.1000-9787(2017)05-0040-04.

摘要

提出了基于小波包能量谱的钢轨扣件松脱识别方法

对获得的振动信号进行小波包分解

结合扣件松脱前后振动信号频域内能量变化

构造损伤指标（DI）。在此基础上

开展了5种工况下的轨道结构动力响应测试

进行了轨道结构状态识别分析。实验结果表明:DI能够有效地识别轨道结构状态

且随着松脱程度的增加而增加;同一工况下得到的损伤指标DI变化波动均在±0.5以内

验证了该方法具有很好的鲁棒性和抗干扰能力。

Abstract

A method based on wavelet packet energy spectrum is put forward to detect rail fastener loosening.Vibration signal is decomposed with wavelet packets

combined with energy variation in frequency domain before and after fastener loosening to build damage index（ DI）. On the above basis

conduct dynamic response tests of track structure under five conditions and identify and analyze on track structure state. Experimental results show that DI can effectively identify track structure state

which is significantly increasing with the increased degree of loosening; fluctuation range of DI under the same condition is within ± 0. 5

which proves that the proposed method has strong robust and capacity of resisting disturbance.

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references

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