• 제목/요약/키워드: Modulated Power Law Process

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BAYESIAN APPROACH TO MEAN TIME BETWEEN FAILURE USING THE MODULATED POWER LAW PROCESS

  • Na, Myung-Hwa;Kim, Moon-Ju;Ma, Lin
    • Journal of the Korean Society for Industrial and Applied Mathematics
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    • 제10권2호
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    • pp.41-47
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    • 2006
  • The Renewal process and the Non-homogeneous Poisson process (NHPP) process are probably the most popular models for describing the failure pattern of repairable systems. But both these models are based on too restrictive assumptions on the effect of the repair action. For these reasons, several authors have recently proposed point process models which incorporate both renewal type behavior and time trend. One of these models is the Modulated Power Law Process (MPLP). The Modulated Power Law Process is a suitable model for describing the failure pattern of repairable systems when both renewal-type behavior and time trend are present. In this paper we propose Bayes estimation of the next failure time after the system has experienced some failures, that is, Mean Time Between Failure for the MPLP model. Numerical examples illustrate the estimation procedure.

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Prediction of MTBF Using the Modulated Power Law Process

  • Na, Myung-Hwan;Son, Young-Sook;Yoon, Sang-Hoo;Kim, Moon-Ju
    • Journal of the Korean Data and Information Science Society
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    • 제18권2호
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    • pp.535-541
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    • 2007
  • The Non-homogeneous Poisson process is probably the most popular model since it can model systems that are deteriorating or improving. The renewal process is a model that is often used to describe the random occurrence of events in time. But both these models are based on too restrictive assumptions on the effect of the repair action. The Modulated Power Law Process is a suitable model for describing the failure pattern of repairable systems when both renewal-type behavior and time trend are present. In this paper we propose maximum likelihood estimation of the next failure time after the system has experienced some failures, that is, Mean Time Between Failure for the MPLP model.

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