A new rule-based, expert system for diagnosing spacecraft anomalies is under development. The knowledge base consists of over two-hundred rules and provide links to historical and environmental databases. Environmental causes considered are bulk charging, single event upsets (SEU), surface charging, and total radiation dose. The system's driver translates forward chaining rules into a backward chaining sequence, prompting the user for information pertinent to the causes considered. The use of heuristics frees the user from searching through large amounts of irrelevant information (varying degrees of confidence in an answer) or 'unknown' to any question. The expert system not only provides scientists with needed risk analysis and confidence estimates not available in standard numerical models or databases, but it is also an effective learning tool. In addition, the architecture of the expert system allows easy additions to the knowledge base and the database. For example, new frames concerning orbital debris and ionospheric scintillation are being considered. The system currently runs on a MicroVAX and uses the C Language Integrated Production System (CLIPS).


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    Title :

    On-Line Expert System for Diagnosing Environmentally Induced Spacecraft Anomalies Using Clips


    Contributors:
    M. Lauriente (author) / M. Rolincik (author) / H. C Koons (author) / D. Gorney (author)

    Publication date :

    1993


    Size :

    11 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    An on-line expert system for diagnosing environmentally induced spacecraft anomalies using CLIPS

    Lauriente, Michael / Rolincik, Mark / Koons, Harry C et al. | NTRS | 1993


    An expert system for diagnosing environmentally induced spacecraft anomalies

    Rolincik, Mark / Lauriente, Michael / Koons, Harry C. et al. | NTRS | 1992



    Expert System for Diagnosing Anomalies of Spacecraft

    M. Lauriente / R. Durand / A. Vampola et al. | NTIS | 1994


    Ènvironmentally Induced Spacecraft Anomalies

    Lauriente, M. | Online Contents | 1994