Method, devices and computer program for assisting in the diagnostic of an aircraft system, using failure condition graphs
First Claim
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1. A method for establishing an aid in diagnosis of a complex system of an aircraft comprising a plurality of sub-systems, at least one sub-system of the plurality of sub-systems comprising circuitry configured to monitor and provide notifications regarding at least one detected event,the method using:
- a failure condition graph at least partially modeling the complex system, the failure condition graph comprising a plurality of peaks, each peak being connected by a logic implication relationship to at least one other peak of the plurality of peaks, the plurality of peaks comprising;
one peak representing a failure condition event; and
one peak representing only at least one element of the complex system, the at least one element being able to break down, andthe method comprising;
receiving at least one message of notification of occurrence of the at least one detected event;
creating a set of failure events, each said failure event of the set of failure events being associated with a peak of the failure condition graph linked to the at least one received notification message;
for each said failure event of the set of failure events, constructing, from the failure condition graph, at least one logic expression leading to the failure event, the at least one logic expression being based on elements of the complex system;
creating at least one group of failure events of the set of failure events, the at least one element being common to two logic expressions linked to two separate failure events of the at least one group, the logic expressions associated with the failure events of the at least one group representing a diagnosis relating to the at least one detected event; and
determining minimal vertexes of the logic expressions of the failure events of the at least one group of failure events, the minimal vertexes forming minimal diagnoses of the diagnosis relating to the at least one detected event.
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Abstract
A diagnostic system of an aircraft, comprising a plurality of sub-systems at least one of which performs monitoring and notification of at least one detected event, using graphs of feared events. After a message of notification of occurrence of the detected event has been received, a set of feared events linked to this message is created from the graph of feared events, and logic expressions are constructed according to logic links represented in the graph of feared events. A group of feared events then is created according to elements of the logic expressions. The minimal vertexes of the logic expressions associated with the feared events of the group are calculated and form a diagnosis of the system.
15 Citations
19 Claims
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1. A method for establishing an aid in diagnosis of a complex system of an aircraft comprising a plurality of sub-systems, at least one sub-system of the plurality of sub-systems comprising circuitry configured to monitor and provide notifications regarding at least one detected event,
the method using: -
a failure condition graph at least partially modeling the complex system, the failure condition graph comprising a plurality of peaks, each peak being connected by a logic implication relationship to at least one other peak of the plurality of peaks, the plurality of peaks comprising; one peak representing a failure condition event; and one peak representing only at least one element of the complex system, the at least one element being able to break down, and the method comprising; receiving at least one message of notification of occurrence of the at least one detected event; creating a set of failure events, each said failure event of the set of failure events being associated with a peak of the failure condition graph linked to the at least one received notification message; for each said failure event of the set of failure events, constructing, from the failure condition graph, at least one logic expression leading to the failure event, the at least one logic expression being based on elements of the complex system; creating at least one group of failure events of the set of failure events, the at least one element being common to two logic expressions linked to two separate failure events of the at least one group, the logic expressions associated with the failure events of the at least one group representing a diagnosis relating to the at least one detected event; and determining minimal vertexes of the logic expressions of the failure events of the at least one group of failure events, the minimal vertexes forming minimal diagnoses of the diagnosis relating to the at least one detected event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for establishing an aid in diagnosis of a complex system of an aircraft comprising a plurality of sub-systems, at least one sub-system of the plurality of sub-systems comprising circuitry configured to monitor and provide notifications regarding at least one detected event,
the method using: -
a failure condition graph at least partially modeling the complex system, the failure condition graph comprising a plurality of peaks, each peak being connected by a logic implication relationship to at least one other peak of the plurality of peaks, the plurality of peaks comprising; one peak representing a failure condition event; and one peak representing only at least one element of the complex system, the at least one element being able to break down, and the method comprising; receiving at least one message of notification of occurrence of the at least one detected event; creating a set of failure events, each said failure event of the set of failure events being associated with a peak of the failure condition graph linked to the at least one received notification message; for each said failure event of the set of failure events, constructing, from the failure condition graph, at least one logic expression leading to the failure event, the at least one logic expression being based on elements of the complex system; and creating at least one group of failure events of the set of failure events, the at least one element being common to two logic expressions linked to two separate failure events of the at least one group, the logic expressions associated with the failure events of the at least one group representing a diagnosis relating to the at least one detected event, wherein the failure condition graph includes a plurality of peaks representing only at least one element of the complex system that are able to break down, each of said plurality of peaks representing different elements of the complex system that are able to break down, wherein the diagnosis is expressed by the failure condition graph in terms of starting from said plurality of peaks representing different elements of the complex system that are able to break down, and wherein the method further comprises determining a minimal vertex of regarding said plurality of peaks representing different elements of the complex system that are able to break down. - View Dependent Claims (16, 17, 18, 19)
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Specification
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Current AssigneeAirbus, Airbus Operations (European Aeronautic Defence and Space Company EADS NV)
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Original AssigneeAirbus Operations SAS (Airbus SE), Airbus SAS (Airbus SE)
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InventorsCheriere, Vincent, Abelin, Christophe, Roger, Jeremy, Vilalta-Estrada, Laia
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Primary Examiner(s)Rivas, Omar Fernandez
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Assistant Examiner(s)KHAN, IFTEKHAR A
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Application NumberUS13/276,632Publication NumberTime in Patent Office1,259 DaysField of Search703/2US Class Current703/2CPC Class CodesG05B 23/0248 Causal models, e.g. fault t...G06F 11/0739 in a data processing system...G06F 11/0748 in a remote unit communicat...G06F 11/079 Root cause analysis, i.e. e...
