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The application of emulation techniques in the analysis of highly reliable, guidance and control computer systemsEmulation techniques can be a solution to a difficulty that arises in the analysis of the reliability of guidance and control computer systems for future commercial aircraft. Described here is the difficulty, the lack of credibility of reliability estimates obtained by analytical modeling techniques. The difficulty is an unavoidable consequence of the following: (1) a reliability requirement so demanding as to make system evaluation by use testing infeasible; (2) a complex system design technique, fault tolerance; (3) system reliability dominated by errors due to flaws in the system definition; and (4) elaborate analytical modeling techniques whose precision outputs are quite sensitive to errors of approximation in their input data. Use of emulation techniques for pseudo-testing systems to evaluate bounds on the parameter values needed for the analytical techniques is then discussed. Finally several examples of the application of emulation techniques are described.
Document ID
19880001416
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Migneault, Gerard E.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 5, 2013
Publication Date
July 1, 1987
Publication Information
Publication: AGARD, Fault Tolerant Considerations and Methods for Guidance and Control Systems
Subject Category
Aircraft Stability And Control
Accession Number
88N10798
Distribution Limits
Public
Copyright
Other
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