“匹配”小波在金属瞬态识别中的应用

[1992] Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis Pub Date : 1992-10-04 DOI:10.1109/TFTSA.1992.274167

R. Priebe, G. Wilson

{"title":"“匹配”小波在金属瞬态识别中的应用","authors":"R. Priebe, G. Wilson","doi":"10.1109/TFTSA.1992.274167","DOIUrl":null,"url":null,"abstract":"A class of signals that usually precede failure of machinery are metallic transients due to momentary contact of supposedly noncontacting moving parts. In many cases these transients can be modeled as sums of spectral components. It is possible to construct models of metallic transients by summing together shifted and dilated copies of a single damped sinusoid. Wavelets are inherently suited to the analysis of metallic transient signals because they are based on shifts and dilations of a single function. It is possible to tailor the wavelet used in the wavelet transform to give an optimal response to the damped sinusoids that compose the metallic transient. If these metallic transients are generated by cyclostationary processes, it is shown that moments of the wavelet transforms of these signals can be used to study correlation between the individual components of the signal in both time and frequency.<<ETX>>","PeriodicalId":105228,"journal":{"name":"[1992] Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis","volume":"87 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1992-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"12","resultStr":"{\"title\":\"Application of 'matched' wavelets to identification of metallic transients\",\"authors\":\"R. Priebe, G. Wilson\",\"doi\":\"10.1109/TFTSA.1992.274167\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A class of signals that usually precede failure of machinery are metallic transients due to momentary contact of supposedly noncontacting moving parts. In many cases these transients can be modeled as sums of spectral components. It is possible to construct models of metallic transients by summing together shifted and dilated copies of a single damped sinusoid. Wavelets are inherently suited to the analysis of metallic transient signals because they are based on shifts and dilations of a single function. It is possible to tailor the wavelet used in the wavelet transform to give an optimal response to the damped sinusoids that compose the metallic transient. If these metallic transients are generated by cyclostationary processes, it is shown that moments of the wavelet transforms of these signals can be used to study correlation between the individual components of the signal in both time and frequency.<<ETX>>\",\"PeriodicalId\":105228,\"journal\":{\"name\":\"[1992] Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis\",\"volume\":\"87 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1992-10-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"12\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"[1992] Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/TFTSA.1992.274167\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"[1992] Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/TFTSA.1992.274167","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 12

摘要

通常在机械故障之前的一类信号是由于假定不接触的运动部件的瞬间接触而产生的金属瞬变。在许多情况下，这些瞬态可以用光谱分量的总和来模拟。通过将单个阻尼正弦波的位移拷贝和膨胀拷贝加在一起，可以构造金属瞬态模型。小波固有地适合于分析金属瞬态信号，因为它们是基于单个函数的位移和膨胀。有可能调整小波变换中使用的小波，以对构成金属瞬态的阻尼正弦波给出最佳响应。如果这些金属瞬态是由周期平稳过程产生的，则表明这些信号的小波变换的矩可以用来研究信号各分量在时间和频率上的相关性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Application of 'matched' wavelets to identification of metallic transients

A class of signals that usually precede failure of machinery are metallic transients due to momentary contact of supposedly noncontacting moving parts. In many cases these transients can be modeled as sums of spectral components. It is possible to construct models of metallic transients by summing together shifted and dilated copies of a single damped sinusoid. Wavelets are inherently suited to the analysis of metallic transient signals because they are based on shifts and dilations of a single function. It is possible to tailor the wavelet used in the wavelet transform to give an optimal response to the damped sinusoids that compose the metallic transient. If these metallic transients are generated by cyclostationary processes, it is shown that moments of the wavelet transforms of these signals can be used to study correlation between the individual components of the signal in both time and frequency.<>

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

[1992] Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis

自引率

0.00%

发文量