滚动轴承和齿轮故障诊断和检测毕业设计论文

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1、河南理工大学毕业设计（论文）说明书摘要滚动轴承和齿轮是煤矿机电设备机械系统中最基本的元件，其出现故障的概率很高，一旦滚动轴承和齿轮出现故障就会造成巨大的经济损失，因此必须对其进行监测和诊断。目前的故障诊断方法大都以振动理论为基础，振动信号处理技术是设备故障诊断中最有效、最常用的方法。本文介绍了故障诊断的目的、意义、国内外研究现状、目前常用的故障诊断方法、Matlab小波工具箱、引起滚动轴承及齿轮故障的主要原因等。对小波分析法的理论部分进行了深入研究，并利用Matlab小波工具箱对滚动轴承及齿轮的故障信号进行小波分解。通过对分解所得细节信号的分析，可

2、以准确判断出发生故障的部位及时间。结果表明，小波分析法可以在早期发现故障及其产生原因，减少维修时间，提高维修质量，节约维修费用，是一种行之有效的故障诊断方法。关键词：故障诊断；小波分析；Matlab仿真河南理工大学毕业设计（论文）说明书FailurediagnosisofelectromechanicaldeviceincoalmineAbstract:Theconditionbearingandgearrunisrelatetotheperformancewhichmechanicalsystemrun，theprobabilityitappea

3、rsthebreakdownisveryhigh．Oncethebearingandthegearappearthebreakdown，cancausethemechanicalsystemtobeunableworknormally．Itwillcreatethehugeeconomicloss．Thepresentmethodoffaultdiagnosismostlybasesonthevibrationtheoryandthesignalprocessingtechnologybasingonvibrationisthemosteffect

4、iveandthemostcommonlyusedmethod.Themainsignificanceoffaultdiagnosisofequipmentisstateoftheimplementationofplannedmaintenance，makeearlywarningofthedevelopmentofequipmentfailure.Identificateandevaluateofthereasons，locationanddegreeofriskidentificationofthefault.Forecastthedevelo

5、pmenttrendofthefault.Forecastthedevelopmenttrendofthefaultandquicklyfindfaultsource.Putforwardcountermeasuresandsuggestions.Andrapidtothespecificcircumstancestomakeresponsetroubleshooting，toavoidorreduceaccident，andensurethesmoothprogressofproduction。Thispapertalksaboutthepurp

6、oseoffaultdiagnosis，thesignificance，Researchathomeandabroad，Thecurrentcommonlyusedmethodoffaultdiagnosis，Matlabwavelettoolbox，themainreasonsofthefaultofrollingbearingandgear，andsoon.Theresearchofthetheoreticalpartofwaveletanalysisiscarriedoutin-depth。.AndusingMatlabwavelettool

7、boxmakeasimulationoffaultdiagnoseofrollingbearingandgear。Theresultsshowthat，waveletanalysiscanfindthereasonsforthefaultatanearlystage，reducemaintenancetime，improvethequalityofmaintenanceandsavemaintenancecost，itisaneffectivemethodoffaultdiagnosis.Keywords:FaultDiagnosis；Wavele

8、tAnalysis；Matlabsimulation河南理工大学毕业设计（论文）说明书目录1绪论11.1选题的目的和意义1