摘要
设产品寿命服从双参数指数分布。ε（λ，μ），其中λ＞０为尺度参数（失效率），μ＞０为位置参数（保证寿命）。在加速应力水平Ｓｉ下，失效率和保证寿命的加速模型分别为本文给出了定时截尾情形下对由恒定应力加速寿命试验得到的数据进行统计分析的方法。获得了系数β０，β１，β２，α０，α１的近似ＢＬＵＥ（最佳线性无偏估计）。然后由模型可以求得在正常应力水平Ｓ０下各种可靠性特征量的估计。随机模拟例子的计算结果表明，本文给出的统计方法具有较高的精度。
Suppose that the distribution of the life time of the products follows the two parameter exponential law E(A,P), in which λ>0 is the scale parameter (failure rate), and μ >0 is the location parameter (life guarantee). Under the stress S,, the failure rate accelerated model and the life guararntee accelerated model are respectively.In this paper, we have given the statistical analysis of type I censoring data from the constant-stress accelerated life testing method. We obtain the approximate BLUEs (Best Linear Unbiased Estimators) of the coefficients β0,β1,β2,α0 and α1. Using the two models,we can obtain the estimators of the various reliability characteristics under the usual stress S,' The results of random simulation show that the method given above is of more high precis ion.
出处
《南京航空航天大学学报》
CAS
CSCD
1994年第1期96-103,共8页
Journal of Nanjing University of Aeronautics & Astronautics
关键词
指数分布
线性模型
随机模拟
exponential distribution
linear model
random simulation
type I censoring test
constant-stress accelerated life test
