3、FeiZHU XiaocuiHAO Qingbo (College of Mechanical ScienceandEngineering, Jilin University, Changchun130025)Abstract:As theassumption ofthe machining centercan berepairedtonewmaybe biasedin realcase,anewreliabilitymodelling technique isproposed based on the empiricalmodelling method.The reliabilitymod
4、els ofmachining centerare estabilshedon the failuretimefirstly,which coulddescribethereliabilitylevelatagiventimewithno timeserieschangesinthetestperiod,and overcome the weakness ofthereliabilitymodels builton thefaulttime intervalcanonlygive the reliabilitywhich changesas thetime fromone faulttoth
5、enextfault.Then,inordertodescribethe distributions ofvarious sequence failuretime,modellingmethodbased on everysequence failure timeispresent,and thecorrelation ofthe failure time is analyzed.Combinedthe models offailure time and theevery sequence failuretime,thereliabilitystatuscanbeobtained.Final
6、ly,acaseexampleof18 machining centers is given,the models offailure time andtheeverysequence failuretimearebuilt.Itshowsthatthe correlation relationshipisobvious.Keywords:Timedynamicreliability MachiningcenterEmpiricalmodelling Correlationanalysis 通过建立系统故障时间的概率分布得到系统可靠性 0 前言模型。对于复杂机电液系统如加工中心的可靠性建模,