| 信号短时分析方法在机械故障诊断中的应用 |
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| 引用本文： | 严峻,朱利民.信号短时分析方法在机械故障诊断中的应用[J].南京邮电大学学报(自然科学版),1999(4). |
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| 作者姓名： | 严峻 朱利民 |
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| 作者单位： | 南京邮电学院信息工程系!江苏南京210003(严峻)，东南大学机械工程系!江苏南京210018(朱利民) |
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| 摘 要： | 定性研究了短时能量分析法的特性,指出该方法在时域中相当于用能量法检测瞬态信号,而在频域中相当于用自相关函数法检测频谱中的周期成分,并根据方差与一步自相关系数的关系讨论了可用于分析调频信号的短时一步自相关函数法,给出了2种计算短时参数的快速算法,最后以振动信号分析实例验证了短时分析法的有效性。
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| 关 键 词： | 信号处理 故障诊断 短时分析 滚珠轴承 |
The Application of Short term Signal Processing Method to Mechanical Fault Diagnosis |
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| YAN Jun,ZHULi min.The Application of Short term Signal Processing Method to Mechanical Fault Diagnosis[J].Journal of Nanjing University of Posts and Telecommunications,1999(4). |
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| Authors: | YAN Jun ZHULi min |
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| Institution: | YAN Jun1,ZHULi min2 1.DepartmentofInformationEngineering,NanjingUniversity ofPostsandTelecommunications,Nanjing 2 10 0 0 3,China 2 .DepartmentofMechanicalEngineering,SoutheastUniversity,Nanjing 2 10 0 18,China |
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| Abstract: | A qualitativestudyhasbeenconductedonthecharacteristicsofshort termenergyanalysis method .Itisshownthatintimedomain ,thismethodisequivalenttodetectingtheinstantaneoussignalusingen ergyapproach ,whileinfrequencydomain ,itisequivalenttodetectingtheperiodiccomponentsusingauto corre lationapproach .Inaddition ,basedontherelationshipbetweenvarianceandone lagauto correlationcoefficient, theshort termone lagauto correlationfunctionapproachisdiscussed ,whichcanbeusedtoanalyzethefrequen cy modulatedsignals.Twofastalgorithmsforcalculatingshort termparametersaregiven .Finally ,theeffective nessoftheshort termsignalprocessingmethodisverifiedbyanexampleanalysisofvibrationsignals. |
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| Keywords: | Signal processing Faultdiagnosis Short term analysis BalL bearing |
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