Method for monitoring a degradation of an on-board device of an aircraft with automatic determination of a decision threshold
A method for monitoring degradation of an on-board device of an aircraft includes comparing an abnormality score obtained for a given aircraft flight to a decision threshold and emitting an alarm when the decision threshold is exceeded. The decision threshold is determined automatically for a given...
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| creator | BOULET XAVIER HMAD OUADIE MASSE JEAN-REMI ANDRE BEAUSEROY PIERRE JEAN EMILE GRALL-MAES EDITH |
| description | A method for monitoring degradation of an on-board device of an aircraft includes comparing an abnormality score obtained for a given aircraft flight to a decision threshold and emitting an alarm when the decision threshold is exceeded. The decision threshold is determined automatically for a given alarm probability Pa, corresponding to probability of an alarm being emitted during the monitoring when the on-board device is undamaged, by: calculating plural abnormality scores for plural flights of the aircraft without degradation to obtain a probability density distribution of the abnormality score, the distribution being specific to a physical nature of the on-board device; adjusting the distribution using a non-parametric estimator of the probability density to obtain a continuous adjusted distribution function; calculating a continuous adjusted allocation function from the continuous adjusted distribution function; and reading precedent of the continuous adjusted allocation function for value 1-Pa, the precedent corresponding to the decision threshold. |
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The decision threshold is determined automatically for a given alarm probability Pa, corresponding to probability of an alarm being emitted during the monitoring when the on-board device is undamaged, by: calculating plural abnormality scores for plural flights of the aircraft without degradation to obtain a probability density distribution of the abnormality score, the distribution being specific to a physical nature of the on-board device; adjusting the distribution using a non-parametric estimator of the probability density to obtain a continuous adjusted distribution function; calculating a continuous adjusted allocation function from the continuous adjusted distribution function; and reading precedent of the continuous adjusted allocation function for value 1-Pa, the precedent corresponding to the decision threshold.</description><language>eng</language><subject>AIRCRAFT ; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT ; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE ; AVIATION ; CALCULATING ; CHECKING-DEVICES ; COMPUTING ; CONTROL OR REGULATING SYSTEMS IN GENERAL ; CONTROLLING ; COSMONAUTICS ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; EQUIPMENT FOR FITTING IN OR TO AIRCRAFT ; FLYING SUITS ; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS ; GENERATING RANDOM NUMBERS ; MEASURING ; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS ; PARACHUTES ; PERFORMING OPERATIONS ; PHYSICS ; REGISTERING OR INDICATING THE WORKING OF MACHINES ; REGULATING ; TESTING ; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES ; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR ; TIME OR ATTENDANCE REGISTERS ; TRANSPORTING ; VOTING OR LOTTERY APPARATUS</subject><creationdate>2016</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160524&DB=EPODOC&CC=US&NR=9346558B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20160524&DB=EPODOC&CC=US&NR=9346558B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BOULET XAVIER</creatorcontrib><creatorcontrib>HMAD OUADIE</creatorcontrib><creatorcontrib>MASSE JEAN-REMI ANDRE</creatorcontrib><creatorcontrib>BEAUSEROY PIERRE JEAN EMILE</creatorcontrib><creatorcontrib>GRALL-MAES EDITH</creatorcontrib><title>Method for monitoring a degradation of an on-board device of an aircraft with automatic determination of a decision threshold</title><description>A method for monitoring degradation of an on-board device of an aircraft includes comparing an abnormality score obtained for a given aircraft flight to a decision threshold and emitting an alarm when the decision threshold is exceeded. The decision threshold is determined automatically for a given alarm probability Pa, corresponding to probability of an alarm being emitted during the monitoring when the on-board device is undamaged, by: calculating plural abnormality scores for plural flights of the aircraft without degradation to obtain a probability density distribution of the abnormality score, the distribution being specific to a physical nature of the on-board device; adjusting the distribution using a non-parametric estimator of the probability density to obtain a continuous adjusted distribution function; calculating a continuous adjusted allocation function from the continuous adjusted distribution function; and reading precedent of the continuous adjusted allocation function for value 1-Pa, the precedent corresponding to the decision threshold.</description><subject>AIRCRAFT</subject><subject>ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT</subject><subject>ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE</subject><subject>AVIATION</subject><subject>CALCULATING</subject><subject>CHECKING-DEVICES</subject><subject>COMPUTING</subject><subject>CONTROL OR REGULATING SYSTEMS IN GENERAL</subject><subject>CONTROLLING</subject><subject>COSMONAUTICS</subject><subject>COUNTING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>EQUIPMENT FOR FITTING IN OR TO AIRCRAFT</subject><subject>FLYING SUITS</subject><subject>FUNCTIONAL ELEMENTS OF SUCH SYSTEMS</subject><subject>GENERATING RANDOM NUMBERS</subject><subject>MEASURING</subject><subject>MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS</subject><subject>PARACHUTES</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>REGISTERING OR INDICATING THE WORKING OF MACHINES</subject><subject>REGULATING</subject><subject>TESTING</subject><subject>TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES</subject><subject>TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</subject><subject>TIME OR ATTENDANCE REGISTERS</subject><subject>TRANSPORTING</subject><subject>VOTING OR LOTTERY APPARATUS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNTDsOwjAM7cKAgDv4Al0oRbCCQCxMwFyZxGkstXGVGJi4O0GqxMrynt53WrzPpF4sOInQS2CVyKEFBEttRIvKEkAcYMZQ3gWjzdGTDY0ucjQRncKL1QM-VPo8MrmkFHsOv4dsGU5fpT5S8tLZeTFx2CVajDwr4Hi47k8lDdJQGtBQIG1ul221Wtf1Zres_qh8AHgVR7Q</recordid><startdate>20160524</startdate><enddate>20160524</enddate><creator>BOULET XAVIER</creator><creator>HMAD OUADIE</creator><creator>MASSE JEAN-REMI ANDRE</creator><creator>BEAUSEROY PIERRE JEAN EMILE</creator><creator>GRALL-MAES EDITH</creator><scope>EVB</scope></search><sort><creationdate>20160524</creationdate><title>Method for monitoring a degradation of an on-board device of an aircraft with automatic determination of a decision threshold</title><author>BOULET XAVIER ; HMAD OUADIE ; MASSE JEAN-REMI ANDRE ; BEAUSEROY PIERRE JEAN EMILE ; GRALL-MAES EDITH</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US9346558B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2016</creationdate><topic>AIRCRAFT</topic><topic>ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT</topic><topic>ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE</topic><topic>AVIATION</topic><topic>CALCULATING</topic><topic>CHECKING-DEVICES</topic><topic>COMPUTING</topic><topic>CONTROL OR REGULATING SYSTEMS IN GENERAL</topic><topic>CONTROLLING</topic><topic>COSMONAUTICS</topic><topic>COUNTING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>EQUIPMENT FOR FITTING IN OR TO AIRCRAFT</topic><topic>FLYING SUITS</topic><topic>FUNCTIONAL ELEMENTS OF SUCH SYSTEMS</topic><topic>GENERATING RANDOM NUMBERS</topic><topic>MEASURING</topic><topic>MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS</topic><topic>PARACHUTES</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>REGISTERING OR INDICATING THE WORKING OF MACHINES</topic><topic>REGULATING</topic><topic>TESTING</topic><topic>TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES</topic><topic>TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR</topic><topic>TIME OR ATTENDANCE REGISTERS</topic><topic>TRANSPORTING</topic><topic>VOTING OR LOTTERY APPARATUS</topic><toplevel>online_resources</toplevel><creatorcontrib>BOULET XAVIER</creatorcontrib><creatorcontrib>HMAD OUADIE</creatorcontrib><creatorcontrib>MASSE JEAN-REMI ANDRE</creatorcontrib><creatorcontrib>BEAUSEROY PIERRE JEAN EMILE</creatorcontrib><creatorcontrib>GRALL-MAES EDITH</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BOULET XAVIER</au><au>HMAD OUADIE</au><au>MASSE JEAN-REMI ANDRE</au><au>BEAUSEROY PIERRE JEAN EMILE</au><au>GRALL-MAES EDITH</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for monitoring a degradation of an on-board device of an aircraft with automatic determination of a decision threshold</title><date>2016-05-24</date><risdate>2016</risdate><abstract>A method for monitoring degradation of an on-board device of an aircraft includes comparing an abnormality score obtained for a given aircraft flight to a decision threshold and emitting an alarm when the decision threshold is exceeded. The decision threshold is determined automatically for a given alarm probability Pa, corresponding to probability of an alarm being emitted during the monitoring when the on-board device is undamaged, by: calculating plural abnormality scores for plural flights of the aircraft without degradation to obtain a probability density distribution of the abnormality score, the distribution being specific to a physical nature of the on-board device; adjusting the distribution using a non-parametric estimator of the probability density to obtain a continuous adjusted distribution function; calculating a continuous adjusted allocation function from the continuous adjusted distribution function; and reading precedent of the continuous adjusted allocation function for value 1-Pa, the precedent corresponding to the decision threshold.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE AVIATION CALCULATING CHECKING-DEVICES COMPUTING CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING COSMONAUTICS COUNTING ELECTRIC DIGITAL DATA PROCESSING EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS FUNCTIONAL ELEMENTS OF SUCH SYSTEMS GENERATING RANDOM NUMBERS MEASURING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PARACHUTES PERFORMING OPERATIONS PHYSICS REGISTERING OR INDICATING THE WORKING OF MACHINES REGULATING TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR TIME OR ATTENDANCE REGISTERS TRANSPORTING VOTING OR LOTTERY APPARATUS |
| title | Method for monitoring a degradation of an on-board device of an aircraft with automatic determination of a decision threshold |
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