Duane/AMSAA以及如何使用Minitab处理RGT数据

share下,简单介绍Duane和Crow模型.如何使用Minitab处理可靠性增长测试数据.
需要的可以参考:

RGModelsUsedinTFT
•Crow-AMSAA
•Duane
•GompertzandModifiedGompertz
•LloydLipow
•Logistic

DuaneModel
•Alsocalledas“DuanePostulate”.
•DevelopedbasedonanobservationbyJ.T.Duane.
•Duaneobservedthatthecumulativefailureratevs
cumulativetesttimewaslinearonalog-logpaper
whenheplottedtestdatafromgenerators,hydromechanical
devicesandaircraftengines.
•Itisadeterministicmodel.
•UsedforTest-Fix-Testdata.

•MTBFCiscumulative=totalfailures/totaltime.
•MTBF0isatstartingpoint.
•T0isstartingtimeandisthegrowthrate.
•Canbeusedtoestimaterequiredtesttimetoreach
goalsoriftimeisfixed,determinehowmanysystems
mustbetested.
•Withgoodeffort~0.3-0.4forcomplexsystems.
•InstantaneousMTBFi=MTBF/(1-).