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Multiple Fault Isolation in Redundant SystemsWe consider the problem of sequencing tests to isolate multiple faults in redundant (fault-tolerant) systems with minimum expected testing cost (time). It can be shown that single faults and minimal faults, i.e., minimum number of failures with a failure signature different from the union of failure signatures of individual failures, together with their failure signatures, constitute the necessary information for fault diagnosis in redundant systems. In this paper, we develop an algorithm to find all the minimal faults and their failure signatures. Then, we extend the Sure diagnostic strategies [1] of our previous work to diagnose multiple faults in redundant systems. The proposed algorithms and strategies are illustrated using several examples.
Document ID
19980096376
Document Type
Other
Authors
Shakeri, M. (Connecticut Univ. Storrs, CT United States)
Pattipati, Krishna R. (Connecticut Univ. Storrs, CT United States)
Raghavan, V. (Connecticut Univ. Storrs, CT United States)
Patterson-Hine, Ann (NASA Ames Research Center Moffett Field, CA United States)
Iverson, David L. (NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
August 18, 2013
Publication Date
May 1, 1997
Publication Information
Publication: Multiple Fault Isolation in Redundant Systems
Subject Category
Quality Assurance and Reliability
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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