Application of uniform design in missile components accelerated life testing
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摘要: 温度和湿度是影响导弹贮存寿命的两个典型应力,用加速寿命试验的方法预测导弹贮存可靠性将成为一种新趋势.为优化试验设计并应用与之相适应的参数估计方法,将改进的"均匀设计"引入到导弹的加速试验中去,根据加速试验的组合应力大小提出了优化试验顺序的方法,将完全修复的产品继续投入试验中去,从而节约了试验样本量;应用了双应力条件下的"应力-寿命"的数学模型,应用极大似然估计和"稳健回归"相结合的方法来估计参数值,因为单纯的极大似然估计对初值要求较高,往往导致不收敛.通过案例证明了所提的试验方案和评估模型方法理论的正确性和工程的可执行性.Abstract: Temperature and humidity are typical stresses that affect the life of missile storage. Accelerated life testing is becoming a new trend to predicate the reliability of missile storage.In order to optimize the experimental design and propose corresponding parameter estimation method, the testing sequence was adjusted according to the stress level of accelerated life testing which used the improved ‘uniform design-. Thus the completely fixed sample could be reused in the following experiment to reduce the test sample size.The mathematical model ‘stress-life- was derived under the double stress. Both maximum likelihood estimation (MLE) and robust regression were used for estimating the parameters instead of maximum likelihood estimation only because of which has a high request for initial value and often does not converge. The related example verified the correctness and applicability of the design of experiment and the parameter estimation method.
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Key words:
- accelerators /
- uniform design /
- robustness /
- regression analysis
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[1] 陈迪,周百里,费鹤良.导弹系统贮存可靠性预测的数学模型[J].宇航学报,1996,17(3):51-57 Chen Di,Zhou Baili,Fei Heliang.Storage of the missile system-s mathematical model of reliability prediction [J].Journal of Astronautics,1996,17(3):51-57 (in Chinese) [2] 鲍志晖.Weibull分布场合下双应力加速寿命试验的统计分析 .上海:华东师范大学理工学院,2003 Bao Zhihui. The statistical methods of double stress accelerated life test for weibull distribution .Shanghai:School of Science & Engineering,East China Teachers University,2003 (in Chinese) [3] 刘秀萍.电子产品的加速贮存可靠性模型及统计分析 .贵州:贵州大学理学院,2007 Liu Xiuping.Accelerated storage reliability model and statistical analysis of electronic products .Guizhou:College of Science,Guizhou University,2007(in Chinese) [4] 黄幼才.数据探测与抗差估计[M].涿州:测绘出版社,1990:287-325 Huang Youcai.Data detection and robust estimation[M].Zhuozhou:Mapping Press,1990:287-325(in Chinese) [5] 方开泰,马长兴.正交与均匀试验设计[M].北京:科学出版社,2001:83-211 Fang Kaitai,Ma Changxing.Orthogonal and uniform design of experiment [M].Beijing:Science Press,2001:83-211(in Chinese) [6] Finkelstein M S.A note on some aging properties of the accelerated life model[J].Reliability Engineering & System Safety,2001,71(1):109-112 [7] Erkanli A,Soyer R.Simulation-based designs for accelerated life testing[J].Journal of Statistical Planning and Inference,2000,90(2):335-348 [8] Fang Z,Wiens D P.Robust regression designs for approximate polynomial models[J].Journal of Statistical Planning and Inference,2003,117(2):305-321 [9] Ortiz M C,Sarabia L A,Herrero A.Robust regression techniques:a useful alternative for the detection of outlier data in chemical analysis[J].Talanta,2006,70(3):499-512 [10] Phillips P C B,Sun Y,Jin S.Long run variance estimation and robust regression testing using sharp origin kernels with no truncation[J].Journal of Statistical Planning and Inference,2007,137(3):985-1023 -
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