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Some statistical characteristics of a repairable, standby, humanand machine system

机译:可修复的备用人机系统的一些统计特征

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This paper presents a model for a two-unit s-identical system withnone operating-unit (OU) online and the other, warm standby-unit (SU)nhuman machine system. The failure rates for both the OU and SUn(common-cause, human error and hardware failures) are constant, whereasnthe repair times are arbitrarily distributed for a failed system. Linearnordinary differential equations are used to obtain a general expressionnfor system steady-state availability for failed system by taking thenrepair time distributions as Gamma. Generalized expressions for systemnreliability, and time-dependent availability are presented. Graphsndemonstrate the impact of human error on system steady-statenavailability for various distributions, and some physical meaning isngiven. As time increases, the time-dependent availability decreases fornexponential repair time distribution for different values of initialnhuman error rate
机译:本文提出了一个两单元s-identical系统的模型,该系统没有在线的操作单元(OU),而另一个是热备用单元(SU)nhuman机器系统。 OU和SUn的故障率(常见原因,人为错误和硬件故障)是恒定的,而对于故障系统,维修时间是任意分配的。通过将维修时间分布作为伽玛值,线性常微分方程用于获得故障系统的系统稳态可用性的一般表达式。给出了系统可靠性和时间依赖性的通用表达式。 Graphs演示了人为错误对各种分布的系统稳态可用性的影响,并且给出了一些物理意义。随着时间的增加,与时间有关的可用性会针对不同的初始人为错误率值的指数修复时间分布而降低

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