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Method for monitoring a degradation in an on-board device of an aircraft with automatic determination of a decision threshold

Abstract : A method for monitoring a degradation in an on-board device of an aircraft, comprising a step of comparing an abnormality score obtained for a given flight of said aircraft with a decision threshold (S) and a step of transmitting an alert in the event of said decision threshold (S) being exceeded, said decision threshold (S) being automatically determined for a given probability of alert Pa, corresponding to the probability of an alert being transmitted during the monitoring method when said on-board device is healthy, by means of a plurality of steps, including a step of reading the antecedent of the continuous adjusted division function for the value 1−Peac, said antecedent corresponding to said decision threshold (S), with Peac being the elementary probability of exceeding the threshold for confirmation per k exceedances of threshold during n consecutive flights and being a function of the probability of alert Pa.
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https://hal-utt.archives-ouvertes.fr/hal-03321078
Contributor : Jean-Baptiste Vu Van Connect in order to contact the contributor
Submitted on : Tuesday, August 17, 2021 - 9:00:26 AM
Last modification on : Tuesday, October 19, 2021 - 11:45:59 AM

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  • HAL Id : hal-03321078, version 1

Citation

Jean-Remi Massé, Ouadie Hmad, Edith Grall-Maës, Pierre Beauseroy. Method for monitoring a degradation in an on-board device of an aircraft with automatic determination of a decision threshold. United States, Patent n° : US9598178. 2017. ⟨hal-03321078⟩

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