裝載機可靠性快速分析和預計方法的研究.pdf

1、山東大學碩士學位論文裝載機可靠性快速分析和預計方法的研究姓名：馬化吉申請學位級別：碩士專業(yè)：工程碩士(機械工程)指導教師：謝宗法付正洲20121108山東大學碩士學位論文AbstractWiththedevelopmentofEngineeringmachineryThecompetitionchangedfromthepricewartothecompetitionofproductqualityAtthesametime，theea

2、rlyaccumulationofproduct’Swarrantydatausingnetworkandthepopularityofcomputermakeswehaveaccumulatedalargenumberoftrueanddetaileddataallmakeit’SposssibletoimproveourproductbydataanalysisInthispaperItriedtothroughthedataana

3、lisysofhostandmainpartsofwheelloaderthemainproductofOurcompanystatisticsfailurerateanditstrendinwarrantyperiod，summarizedthetrendofdifferentpartsandcomparethetrendpredictionmethodFirstIsimpleintroducethestructureofwheell

4、oaderandourdataclassificationmethodthewaywestatisticalwheelloader’SwarrantyfailurerateandthewaywegetfaultratetrendAccordingtothestatisticaldatathecalculationresultsshowthatinthewarrantyperiod，thefailurerateofhostandmainp

5、artsofwheelloaderhaveobviousregularityAccordingtothetwopolynomialfittingonfailureratetrend，thevastmajorityofcomponentsfailureratewithdegree(value)morethan，illustratethewarrantyfailureratecompletelywithtwodegreepolynomial

6、curveSecondlyaccordingtothedevelopmentofmachinefailureratetrendinhistoryforcastfromearlyfailurerate，getaresultandcomparewithactualfailurerates，analysisthedifferencefromthetwotrendAtthesametime。whenthepartsqualitytrendcha

7、nged，accordingtothecontinuitvoffaultrateincrease，statisticalearlyfailurerateanditsdevelopmenttrendfbrcastthefinalresultofthewholewarrantyperiod，comparewithactualdata，tocarryonthefeasibilityfromearlyfailureforlatefailurer

8、ateFinallⅥanalysisthefactwhichcouldhaveimpactonthefaultrate，suchasseasonal，users，conditionsandregionals，accordingtotheactualhistoricalimpact，pointedoutwhichmustbeseriousconsideredwhenmakingafailurerateforcastKeywords：whe