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Superposition of Power-law Models for Hardware/Software System Reliability Data Analysis
University of Gävle, Department of Technology and Built Environment, Ämnesavdelningen för industriell ekonomi.
2003 (English)In: International Journal of Reliability, Quality and Safety Engineering (IJRQSE), ISSN 0218-5393, Vol. 10, no 2, 121-130 p.Article in journal (Other academic) Published
Abstract [en]

One of the widely used NHPP models in reliability is the so-called power-law model, also known as the Duane model. A power-law model can be applied in analyzing failure data of both software and hardware systems. Nevertheless, the power-law model is no longer applicable to describe the failure behavior when a hardware/software embedded system is concerned since the failures can come from both hardware and software. How to analyze the failure data of this type is still a problem to study and a new type of model is needed to develop. In this paper, we consider the superposition of the power-law models (SPLM) as one candidate to describe the failure behaviors of hardware/software systems. The characteristics of SPLMs are thoroughly studied. It is shown that an SPLM has the intensity function that can be increasing, decreasing, increasing-then-decreasing or decreasing-then-increasing. Specifically, the identification method of the superposition of power-law processes is provided by using the TTT-plot technique. The TTT-transform of a superposition of power-law processes is DFR-like. Therefore, the conditional TTT-plot should present a convex pattern if the system failures follow a superposition process by a few power-law processes. This provides us an easy way to identify the model when the testing data is available.

Place, publisher, year, edition, pages
2003. Vol. 10, no 2, 121-130 p.
Identifiers
URN: urn:nbn:se:hig:diva-1291DOI: 10.1142/S0218539303001044OAI: oai:DiVA.org:hig-1291DiVA: diva2:117953
Available from: 2007-02-13 Created: 2007-02-13 Last updated: 2012-03-23Bibliographically approved

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Zhao, Ming
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CiteExportLink to record
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Citation style
  • apa
  • harvard-cite-them-right
  • ieee
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  • Other style
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Language
  • sv-SE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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