Application of the D3H2 methodology for the cost-effective design of dependable systems

Jose Ignacio Aizpurua , Eñaut Muxika, Yiannis Papadopoulos, Ferdinando Chiacchio, Gabriele Manno

Research output: Contribution to journalArticle

8 Citations (Scopus)
28 Downloads (Pure)

Abstract

The use of dedicated components as a means of achieving desirable levels of fault tolerance in a system may result in high costs. A cost effective way of restoring failed functions is to use heterogeneous redundancies: components that, besides performing their primary intended design function, can also restore compatible functions of other components. In this paper, we apply a novel design methodology called D3H2 (aDaptive Dependable Design for systems with Homogeneous and Heterogeneous redundancies) to assist in the systematic identification of heterogeneous redundancies, the design of hardware/software architectures including fault detection and reconfiguration, and the systematic dependability and cost assessments of the system. D3H2 integrates parameter uncertainty and criticality analyses to model inexact failure data in dependability assessment. The application to a railway case study is presented with a focus on analysing different reconfiguration strategies as well as types and levels of redundancies.
Original languageEnglish
Number of pages25
JournalSafety
Volume2
Issue number2
DOIs
Publication statusPublished - 25 Mar 2016

Keywords

  • heterogeneous redundancies
  • cost reduction
  • dependability assessment
  • criticality analysis
  • uncertainty analysis

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