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

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United States of America Patent

PATENT NO 9598178
SERIAL NO

14478076

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
SAFRAN AIRCRAFT ENGINES2 BOULEVARD DU GENERAL MARTIAL VALIN PARIS 75015

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beauseroy, Pierre Jean Emile Troyes, FR 2 2
Grall-Maes, Edith Saint-Pounage, FR 2 5
Hmad, Ouadie Montereau Fault Yonne, FR 4 9
Masse, Jean-Remi Andre Saint-Cloud, FR 7 38

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