Troubleshooting based on a functional device representation: diagnosing faults in the external active thermal control system of Space Station Freedom

Jon Sticklen; James K. McDowell; Robert Hawkins; Timothy D. Hill; Roger Boyer

doi:10.1117/12.141742

23 March 1993 Troubleshooting based on a functional device representation: diagnosing faults in the external active thermal control system of Space Station Freedom

Jon Sticklen, James K. McDowell, Robert Hawkins, Timothy D. Hill, Roger Boyer

Author Affiliations +

Proceedings Volume 1963, Applications of Artificial Intelligence 1993: Knowledge-Based Systems in Aerospace and Industry; (1993) https://doi.org/10.1117/12.141742
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

This report describes an ongoing effort to apply the functional modeling (FM) approach to the representation of and reasoning about engineered artifacts. The application domain is the external active thermal control system (EATCS) of the FREEDOM space station. The intuitions behind FM are threefold. First, knowing the purposes of a device allows organization of the causal understanding of how a device works. Second, in FM, causality is represented in modular chunks which are indexed by the purposes of the device and its interrelated subsystems. Finally, the global behavior of a device in a given situation can be understood by composition of the relevant causal net fragments. These starting intuitions provide a framework for organizing calculations about a device and for performing a limited type of simulation with the organized ensemble.

Citation Download Citation

Jon Sticklen, James K. McDowell, Robert Hawkins, Timothy D. Hill, and Roger Boyer "Troubleshooting based on a functional device representation: diagnosing faults in the external active thermal control system of Space Station Freedom", Proc. SPIE 1963, Applications of Artificial Intelligence 1993: Knowledge-Based Systems in Aerospace and Industry, (23 March 1993); https://doi.org/10.1117/12.141742

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