Power for the Hubble Space Telescope comes from a system of 20 solar panel assemblies (SPAs) and six nickel-cadmium batteries. The HST battery system is simulated by the HST Electrical Power System (EPS) testbed at Marshall Space Flight Center. The Nickel Cadmium Battery Expert System (NICBES) is being used to diagnose faults of the testbed system, evaluate battery status and provide decision support for the engineer. Extensive telemetry of system operating conditions is relayed through a DES LSI-11, and sent on to an IBM PC-AT. A BASIC program running on the PC monitors the flow of data, figures cell divergence and recharge ratio and stores these values, along with other selected data, for use by the expert system. The expert system is implemented in the logic programming language Prolog. It has three modes of operation - fault diagnosis, status and advice, and decision support. An alert or failure of the system will trigger a diagnosis by the system to assist the operator. The operator can also request battery status information as well as a number of plots and histograms of recent battery behavior. Trends in EOC and EOD voltage, recharge ratio and divergence are used by the expert system in its analysis of battery status. A future enhancement to the system includes the statistical prediction of battery life. Incorporating learning into the expert system is another possible enhancement - this is a difficult task, but one which could promise great rewards in improved battery performance.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Diagnosing battery behavior with an expert system in Prolog


    Weitere Titelangaben:

    Diagnose des Batterieverhaltens mit einem Expertensystem in Prolog


    Beteiligte:
    Kirkwood, N. (Autor:in) / Weeks, D.J. (Autor:in)


    Erscheinungsdatum :

    1986


    Format / Umfang :

    7 Seiten, 2 Bilder, 1 Tabelle, 6 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    EV battery management system with fuzzy expert diagnosing

    Sun,X. / Zhong,Y. / Qi,G. et al. | Kraftfahrwesen | 1999


    Expert System for Diagnosing Anomalies of Spacecraft

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


    An expert system for diagnosing anomalies of spacecraft

    Lauriente, Michael / Durand, Rick / Vampola, AL et al. | NTRS | 1994



    An expert system for diagnosing electronically controlled automobiles

    Klausmeier, R. / Allen, W.H. | Tema Archiv | 1986