轮对不平衡检测方法研究及LabVIEW实现

 武益民,陈光雄

(西南交通大学 摩擦学研究所,四川 成都 610031)
摘要:为了避免轮对不平衡对高速列车的影响,针对故障信号的特征,提出一种将经验模式分解(Empirical Mode Decomposition)与Hilbert包络谱分析相结合的故障诊断方法,先通过实验采集轮对振动信号,然后对振动信号EMD分解从而得到基本内蕴模式imf分量,再对得到的各阶imf分量进行Hilbert包络谱分析,从而进行故障识别。将此法通过LabVIEW编程实现并经实验验证,此法在车速100~200 km/h时具有很高识别能力。
关键词:经验模式分解;Hilbert包络谱;LabVIEW;故障诊断;轮对不平衡
中图分类号:U260.331+.1 文献标志码:A doi:10.3969/j.issn.1006-0316.2016.08.009
文章编号:1006-0316 (2016) 08-0043-07
Research on the Detection Method of Unbalanced Wheelset and its Realization in LabVIEW
WU Yimin,CHEN Guangxiong
( Tribology Research Institute, Southwest Jiaotong University, Chengdu 610031, China )
Abstract:In order to aviod the impact of unbalanced wheelsets in high-speed trains, according to the characteristics of the fault signals, a new fault diagnosis method is put forward, which combines the Empirical Mode Decomposition(EMD) with the Hilbert envelope spectrum analysis. The vibration signals are collected in experimental tests, and are analyzed using EMD to get the IMF components(IMFs). Then the imf components are transformed by HHT and their Hilbert spectra are analyzed. This identification procedure is implemented with LabVIEW codes. The experimental test shows that when the forward speed of the wheelset is in the range of 100~200 km/h, the fault signals can be identified effectively. 
Key words:EMD;Hilbert envelope spectrumt;LabVIEW;FAULT diagnosis;Unbalanced wheelset
———————————————
收稿日期:2016-03-17
基金项目:国家自然科学基金(51275429)
作者简介:武益民(1990-),男,河南洛阳人,硕士研究生,主要研究方向为高速列车轮对故障诊断及信号处理;陈光雄(1962-),男,广西玉林人,教授、博士生导师,主要研究方向摩擦振动和噪声。
 

 

设为首页  |  加入收藏    |   免责条款
《机械》杂志版权所有     Copyright©2008-2012 Jixiezazhi.com All Rights Reserved 

  电话:028-85925070    传真:028-85925073    E-mail:jixie@vip.163.com

地址:四川省成都锦江工业开发区墨香路48号   邮编:610063

蜀ICP备08103512号

Powered by PageAdmin CMS