基于LabVIEW的机床振动信号采集与分析系统.pdf

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1、机床与液压Sep．2013HydromechatronicsEngineeringVo1．4lNo．18DOI：10．3969／j．issn．1001-3881．2013．18．033DevelopmentofVibrationSignalAcquisitionandAnalysisSystemforMachineToolsBasedonLabVIEWCHEXia，ZHONGPeisi，LUHongrongAdvancedManufacturingTechnologyCenter，ShandongU

2、niversityofScienceandTechnology，Qingdao266590，ChinaAbstract：Aoveralplanisbuiltthroughanalyzingthecharacteristicsofmachinetoolvibrationsig-halandtheLabVlEW．TheoveralIplanisaboutthevibrationsignalacquisitionandanalysissys-ternformachinetoolsbasedonLabVlE

3、W．Accordingtothecharacteristicsofthetestsignal，thesystemhardwareconfigurationandsoftwarefunctionstructurearegiven．Thesignalacquisition，analysisanddatastoragemodulearedesignedindetail．Thesystemcanrealizethereal-timeac-quisition，timeandfrequencydomainana

4、lysisofthemachinevibrationsigna1．ThedataisstoredinthefOrmatofdatalogfile．Throughtheacquisitionandanalysisoftheheadstockvibrationsig-nal，theaccuracy(reliability)ofthesystemistested．Keywords：machinetools，vibrationsignal，LabVtEW，signalacquisition，signalan

5、alysis，datastorageneeringWorkbench)，isdevelopedbyNationalIn—1．Introductionstruments(NI)．LabVIEWistheonlyinternationalgraphicalprogramminglanguageatpresent，itisAstheindispensableequipmentinthemosten—mainlyusedfordataacquisition，instrumentcontrol。terpris

6、eproductions，ifanycomponentofthemachinedataanalysisandotherfields．themainfeaturesaretoo]breaksout，itwillaffectthemachiningprecisionshownasfollows『2—4]：oftheproducts．Italsocanbringhugeeconomiclos-1)LabVIEWadoptsgraphicallanguage(Gpro—sesfortheenterprise

7、；itmayevencauseseriousacci—gramminglanguage)toprogram，itsconvenienttodents．Accordingtothestatistics，about60％一programandhavinganadvantageoffriendlyhuman·70％ofmechanicalfailuresarereflectedbythevi—computerinterface．Italsohaspowerfu1datavisua1．brationsign

8、al[1]．Throughtheanalysisandprocessizationanalysisandinstrumentcontrolability．ofvibrationsignal，itwillbeabletoinferthatwheth—2、LabVIEWprovidesmanylibraryfunctionsoferthefaultexistsandwhatstageitisin．Therefore，dataacquisition，analysisands