An Evidential Approach To Model-Based Satellite Diagnosis

Timothy W. Bickmore; Glenn M. Yoshimoto

doi:10.1117/12.942906

31 October 1987 An Evidential Approach To Model-Based Satellite Diagnosis

Timothy W. Bickmore, Glenn M. Yoshimoto

Proceedings Volume 0851, Space Station Automation III; (1987) https://doi.org/10.1117/12.942906
Event: Advances in Intelligent Robotics Systems, 1987, Cambridge, CA, United States

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.

Citation Download Citation

Timothy W. Bickmore and Glenn M. Yoshimoto "An Evidential Approach To Model-Based Satellite Diagnosis", Proc. SPIE 0851, Space Station Automation III, (31 October 1987); https://doi.org/10.1117/12.942906

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