系统稳态可用度的非参数近似置信下限

APPROXIMATE LOWER CONFIDENCE LIMITS FOR THE STEADY STATE AVAILABILITY OF SYSTEMS

设系统的故障间隔时间 X和修复时间 Y的分布自由 ,对于系统稳态可用度 A =EXEX + EY,本文给出了两种情形下 A的近似下限 :情形 1是 X、Y的变差系数均已知 ;情形 2是 X、Y的分布参数均未知。

The approximate lower confidence limits for the steady state availability of a system are derived for the following two cases,viz:(1) When both the operating time and the repair time distribution are free, but their coefficients of variation are known,or (2) When both the operating time and the repair time distribution are free, and their parameters are all unknown.