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Proceedings Paper

An Evidential Approach To Model-Based Satellite Diagnosis
Author(s): Timothy W. Bickmore; Glenn M. Yoshimoto
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Paper Abstract

Satellite diagnosis presents many unusual problems in the application of current knowledge-based diagnosis technology. The operation of satellite systems involves expertise that spans a large variety of systems, hardware, and software design areas. This expertise includes knowledge of design rationale and sensitivities, development history, test methods, test history, fault history and other indications of pedigree, and operational scenarios and environments. We have developed an approach to satellite diagnosis which can integrate evidence from a variety of diagnostic strategies encompassing this expertise. The system utilizes a structural and behavioral model of the satellite, and uses a form of spreading activation to perform the diagnostic procedures on the model. The various sources of diagnostic evidence are combined using a specially-tailored Dempster-Shafer based utility for modelling uncertainty. A prototype of a diagnostic system based on this approach has been implemented.

Paper Details

Date Published: 31 October 1987
PDF: 8 pages
Proc. SPIE 0851, Space Station Automation III, (31 October 1987); doi: 10.1117/12.942906
Show Author Affiliations
Timothy W. Bickmore, Lockheed AI Center (United States)
Glenn M. Yoshimoto, Lockheed AI Center (United States)

Published in SPIE Proceedings Vol. 0851:
Space Station Automation III
Wun C. Chiou, Editor(s)

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