摘要
仅含有二个高应力的步加试验称为简单步加试验。本文试图在指数分布场合下对截尾数据讨论简单步加试验。给出了常应力下一些可靠性特征的点估计和置信限,还给出了简单步加试验的最优设计。这里最优性是指常应力下对数寿命的渐近方差的极小化,最后的一个例子说明了上述方法的具体应用。
A simple step-stress accelerated life test (ALT) is a step-stress ALT with only two higher stresses. The present paper considers simple failure-step-stress ALT for censored data assumed to be from an exponential distribution. The point estimators and confidence limits of some reliability characters under usual stress are given. An optimum simple failure-step-stress plan is suggested. The optimization is based on minimizing a close approximation to the exaot variance of log mean time at the usual stress. Finally, an example is used to illustrate our techniques.
出处
《应用概率统计》
CSCD
北大核心
1989年第2期173-179,共7页
Chinese Journal of Applied Probability and Statistics
基金
国家自然科学基金
