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The role of reliability graph models in assuring dependable operation of complex hardware/software systemsThe complexity of computer systems currently being designed for critical applications in the scientific, commercial, and military arenas requires the development of new techniques for utilizing models of system behavior in order to assure 'ultra-dependability'. The complexity of these systems, such as Space Station Freedom and the Air Traffic Control System, stems from their highly integrated designs containing both hardware and software as critical components. Reliability graph models, such as fault trees and digraphs, are used frequently to model hardware systems. Their applicability for software systems has also been demonstrated for software safety analysis and the analysis of software fault tolerance. This paper discusses further uses of graph models in the design and implementation of fault management systems for safety critical applications.
Document ID
19920035052
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Patterson-Hine, F. A.
(NASA Ames Research Center Moffett Field, CA, United States)
Davis, Gloria J.
(NASA Ames Research Center Moffett Field, CA, United States)
Pedar, A.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1991
Subject Category
Computer Systems
Report/Patent Number
AIAA PAPER 91-3793
Accession Number
92A17676
Distribution Limits
Public
Copyright
Other

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