Fault management for the Space Station Freedom control centerThis paper describes model based reasoning fault isolation in complex systems using automated digraph analysis. It discusses the use of the digraph representation as the paradigm for modeling physical systems and a method for executing these failure models to provide real-time failure analysis. It also discusses the generality, ease of development and maintenance, complexity management, and susceptibility to verification and validation of digraph failure models. It specifically describes how a NASA-developed digraph evaluation tool and an automated process working with that tool can identify failures in a monitored system when supplied with one or more fault indications. This approach is well suited to commercial applications of real-time failure analysis in complex systems because it is both powerful and cost effective.
Document ID
19920047008
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Clark, Colin (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Jowers, Steven (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Mcnenny, Robert (McDonnell Douglas Space Systems Co. Houston, TX, United States)
Culbert, Chris (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Kirby, Sarah (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Lauritsen, Janet (NASA Johnson Space Center Houston, TX, United States)