Representing design tradeoffs in safety-critical systems

Authors:
Jennifer Morris;Philip Koopman
Affiliations:
Carnegie Mellon University, Pittsburgh, PA;Carnegie Mellon University, Pittsburgh, PA
Venue:
WADS '05 Proceedings of the 2005 workshop on Architecting dependable systems
Year:
2005

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Abstract

Different fault-tolerance strategies have been shown to be effective at achieving fail-safe behavior in a number of safety-critical application domains with different dependability, service, and cost requirements. A technique for comparing the domain profiles and their fault-tolerance strategies could assist architects of new safety-critical systems in choosing an appropriate fault-tolerance strategy. We suggest an approach using Kiviat graphs to visually represent the dependability, service, and cost profile of a system, and show how such a graph can be used to analyze automotive x-by-wire applications.