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Title: AN AUTOMATED ENVIRONMENT FOR OPTIMIZING FAULT-TOLERANT SYSTEMS DESIGNS
Author: BABCOCK, PS; ROSCH, G; ZINCHUK, JJ
Abstract: Optimizing highly reliable, fault-tolerant systems introduces new challenges to system designers. There are more design variables in fault-tolerant systems and the impact of changes in any of these parameters on system goals such as reliability, availability, maintainability, and life-cycle cost is rarely intuitive. This necessitates the use of analytic evaluation tools to assist the designer in understanding the consequences of changes in the design parameters. Supporting this design optimization process requires tools that allow rapid evaluation of impacts due to design alterations. The Computer-Aided Markov Evaluator (CAME) program is a Computer-Aided Engineering (CAE) tool developed at C. S. Draper Laboratory, Inc. which automatically generates Markov models directly from a system description, providing an environment for quickly evaluating probabilistic measures of a fault-tolerant system's performance. Thus, the CAME program provides an automated environment that aids a designer in systematically optimizing a fault-tolerant system design and, in the process, gaining insight and intuition about why the design behaves as it does. The overall process incorporated in the CAME program are discussed with particular emphasis on its automated model reduction capabilities. An example is shown where the CAME program is used to optimize the design of a fault-tolerant, integrated navigation system.
Source: PROCEEDINGS ANNUAL RELIABILITY AND MAINTAINABILITY SYMPOSIUM
Publication Year: 1991
Volume:
Issue nr: SYM
Pages: 360 - 367
Science Code: Engineering, Multidisciplinary; Engineering, Industrial
Tags: DESIGN OPTIMIZATION; FAULT-TOLERANT SYSTEM; DESIGN FOR R-AND-M; DESIGNTO REQUIREMENTS; AUTOMATED FMEA; MARKOV MODELS; DESIGN ANALYSIS
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