NDLI: Fault tolerant system design optimization

Content Provider	IEEE Xplore Digital Library
Author	McCarragher, B.J. Hammett, R. Schor, A.L.
Copyright Year	1992
Description	Author affiliation: Charles Stark Draper Lab. Inc., Cambridge, MA, USA (McCarragher, B.J.; Hammett, R.; Schor, A.L.)
Abstract	A systematic design optimization methodology for fault-tolerant systems is presented. The mathematical formulation of the design optimization process exploits the conceptual analogy to the general optimal control problem. The fault-tolerant system dynamics is modeled and simulated using Markov models. Thus, unlike other approaches proposed in the literature, the proposed approach does not require explicit formulas for state probabilities and therefore is not limited to simple systems. The resulting formulation is a minimization problem for a cost function of interest. This optimization problem is solved using either a direct search or gradient-based techniques, to produce the set of design variables yielding the minimum cost value. The sensitivities of the cost function to the design variables are efficiently calculated as a natural result of the optimization routines. Two examples of the application of the proposed methodology are presented: a dual redundant warning lamp system and a hypothetical triplex redundant system.<>
Starting Page	558
Ending Page	563
File Size	546526
Page Count	6
File Format	PDF
ISBN	0780308204
DOI	10.1109/DASC.1992.282101
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-10-05
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault tolerant systems Design optimization Cost function Optimal control Process design Differential equations Performance analysis Laboratories Redundancy Uncertainty
Content Type	Text
Resource Type	Article

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