基于虛擬儀器的軸承球疲勞試驗機測控及狀態(tài)診斷系統(tǒng).pdf

1、中圈分類母：rP277THl∽密瓤：單札代q=1l903學號=02720462上海大學④碩士學位論文SHANGHAIUNIVERSITYMASTER’STHESIS題基于虛擬儀器的軸承球疲勞目試驗機胡q控及狀態(tài)診斷系統(tǒng)作者墨垂學科專業(yè)機械設計與理論導師逍宣壁睦嚏陴完成日期!!!!生!旦!量圭蘭奎堂嬰主堂垡堡三三AbstractAtpresentallthebearingballfatiguetestingmachinesperformc

2、ontactfatiguelifetestunderrollingandslidingconditionortwopoint—contactconditionTherollingcontactfatiguelifeiSreducedhighlyfortheexistenceofslideOurresearchgrouphasdevelopedanewthreecontactpointtypeofpurecontactfatiguetes

3、tingmachineThemachinecanfullyevaluatethecontactfatiguelifeofbearingballandhashighpertinenceandefficiencyToperformmoree伍cientandaccuratecontactfatiguetestofbearingballthisPaDerpresenteda“test＆controlandconditiondiagnosing

4、systemforbearingballtestmachinebasedonVItechnology”whichbasedonat’ovenewthree—contactpointtypeoftestingmachineThesvstemmakesfulluseofVItechnologydataacquisitiontechnologysignalprocessandanalysistechnologyandfaultdiagnosi

5、sandcontroltechnologytoimprovetheautomotiveleveloftestingmachinenlcpapermainlyincludesthreeaspects：1DesignofsystemhardwareThecoelatedparameterWasdesignedbaseonthoroughlyrealizingthingssuchasSellsors，sigrlaladjusterDAQcar

6、d，structureandparametersconfigurationofcontroldevice；2DesignofsystemsoftwareiskeypartofthesystemTheideasandmethodsofseveralkeymoduleswhichsolvingmanykeYproblemsintheresearchWOrkWaspresented，suchascomputerparalysisinmulti

7、channelcyclicaldataacquisitioncrosstalkandthelimitationofDAQcardsamplingfrequencyetc311mfaultdiagnosissystemWassetuothanthevibrationsignalcharacteristicoftestingmachineunderdifferentnmaingstateswasanalyzedandthetechnolog

8、ythatuseschangingrulesofamplitudeparametersandfrequencyspectrumanalysistodiagnosethefaultsoftestingmachineWaSsetupFinallybasedonthetestresultoftwogroupsofbearingballwhicharethesamespecificationbutdifierentinmatedalnlcdia

9、gnosticparametervalueofthefatiguetestingmachineunderthedifferentoperationstatesWaSfoundTherelationchartoffatiguelifespanbasedontheresultoffatiguetestCOuldbedrawnoutautomatically11lesystemhastheabilityofrealizingthefuncti

10、onsasautomaticmonitoringfaultsdiagnosis，statecontrol，datamanagementandlongdistanceoperationAtthesametime，italsohasthecharacteristicssuchashi酞reliabilityeasyoperation，strongfunction，friendlyinteffaceandstrongexpandability