Method for computing the relative likelihood of failures

Method for computing the relative likelihood of failures

A method for determining relative likelihood of a failure mode is provided. The method comprises receiving evidence observations of a monitored system from monitors connected in a many-to-many relationship to the failure modes, generating a fault condition including states of all failure modes that...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BARTON, BRADLEY JOHN, MAGNUSON, RANDY, DINS, C. ARTHUR, SHAO, QINGQIU GINGER, KOLBET, DAVID MICHAEL, KHALAK, ASIF
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
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Beschreibung
Zusammenfassung:A method for determining relative likelihood of a failure mode is provided. The method comprises receiving evidence observations of a monitored system from monitors connected in a many-to-many relationship to the failure modes, generating a fault condition including states of all failure modes that are connected to the monitors, and computing a relative probability of failure for each failure mode. The fault condition is generated for a reference model of the monitored system and is based on the received evidence observations. The relative probability of failure for each failure mode is based on a false alarm probability, a detection probability, and a ratio of prior probabilities of a candidate hypothesis to a null hypothesis of no active failure mode.