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Author:
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Volume:
Issue:
Research on Reliability Growth for Synchronously Developed Multi-Systems
Author(s):
MA Xiao-ning
,
L(U) Zhen-zhou
,
YUE Zhu-feng
Pages:
1022
-
1026
Year:
2005
Issue:
9
Journal:
APPLIED MATHEMATICS AND MECHANICS
Keyword:
可靠性增长
;
AMSAA模型
;
AMSAA-BISE模型
;
非齐次泊松过程
;
最小二乘法
;
Abstract:
提出了一种解决多台系统同步投试、同步停止试验和同步改进问题的新模型--指数模型.该模型充分考虑了增长过程中的各种可得信息,包括各改进阶段的失效数、未失效数和失效时间等数据.如果多台系统经过多次同步改进,并且单台系统的可靠性增长符合AMSAA模型,就可以合理地认为在每两个相邻的改进时刻之间,每台系统的失效时间服从指数分布.采用非参数方法得到多台系统在各同步停止试验时刻的可靠度,并利用最小二乘法拟合求得该模型中参数a和b的点估计值,以及参数b的置信限.通过在工程实例中对所提模型和几种已有模型计算结果的比较,说明了所提模型在解决多台系统同步可靠性增长问题中的合理性.
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