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The Bayesian Assessment of System Availability: Advanced Applications and Techniques

机译:贝叶斯系统可用性评估:高级应用程序和技术

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摘要

The statistical assessment of system availability within a Bayesian framework is extended here to consider four additional areas: 1) applications to more complicated availability definitions than considered in an earlier paper; 2) applications to measures of performance other than availability; 3) the use of prior distributions on the failure and repair rates more general than the gamma form; and 4) the use of a model involving nonexponential repair intervals. Under category 1) we consider applications involving: a) a demand for system performance which occurs at a random time within an initial interval; b) a situation involving demands upon a system repeated at intervals; and c) the availability statistics of a redundant configuration. Under category 2) we develop: a) the moment and distributional statistics for the accumulated repair time in a given real-time interval when the rate parameters are uncertain; and b) additional measures of performance in a repeated demand situation. Under category 3) we treat fully the case of a prior distribution composed of a linear combination of gamma distributions; this allows multimodal priors. Under category 4) we treat the case of gamma-distributed repair intervals where both the location and shape parameters are uncertain. The results obtained under all four categories can be expressed in terms of the basic measures for the Euler distribution developed in an earlier paper [1].
机译:贝叶斯框架内对系统可用性的统计评估在此扩展为考虑其他四个方面:1)应用到比先前论文中所考虑的更为复杂的可用性定义; 2)适用于除可用性以外的性能度量; 3)对故障和修复率的先验分布比伽玛形式更普遍; 4)使用涉及非指数维修间隔的模型。在类别1)中,我们考虑以下应用程序:a)对系统性能的需求,该需求在初始时间间隔内的随机时间发生; b)涉及对系统的要求不时重复的情况; c)冗余配置的可用性统计信息。在类别2)下,我们开发:a)当速率参数不确定时,在给定的实时间隔内的累积修复时间的矩和分布统计; b)在重复需求情况下的其他绩效度量。在类别3)下,我们充分处理由伽马分布的线性组合组成的先验分布的情况;这允许多模式先验。在类别4)下,我们处理位置和形状参数均不确定的伽马分布修复间隔的情况。在所有四个类别下获得的结果都可以用先前论文[1]中提出的欧拉分布的基本度量来表示。

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  • 来源
    《Reliability, IEEE Transactions on》 |1968年第3期|共10页
  • 作者

    Brender David M.;

  • 作者单位

    Independent consultant with offices in New York, Y.;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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