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Distributed Diagnosis Using a Condensed Representation of Diagnoses With Application to an Automotive Vehicle
Scania CV.
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, The Institute of Technology.
Scania CV.
2011 (English)In: IEEE transactions on systems, man and cybernetics. Part A. Systems and humans, ISSN 1083-4427, E-ISSN 1558-2426, Vol. 41, no 6, 1262-1267 p.Article in journal (Refereed) Published
Abstract [en]

In fault detection and isolation, diagnostic test results are commonly used to compute a set of diagnoses, where each diagnosis points at a set of components which might behave abnormally. In distributed systems consisting of multiple control units, the test results in each unit can be used to compute local diagnoses while all test results in the complete system give the global diagnoses. It is an advantage for both repair and fault-tolerant control to have access to the global diagnoses in each unit since these diagnoses represent all test results in all units. However, when the diagnoses, for example, are to be used to repair a unit, only the components that are used by the unit are of interest. The reason for this is that it is only these components that could have caused the abnormal behavior. However, the global diagnoses might include components from the complete system and therefore often include components that are superfluous for the unit. Motivated by this observation, a new type of diagnosis is proposed, namely, the condensed diagnosis. Each unit has a unique set of condensed diagnoses which represents the global diagnoses. The benefit of the condensed diagnoses is that they only include components used by the unit while still representing the global diagnoses. The proposed method is applied to an automotive vehicle, and the results from the application study show the benefit of using condensed diagnoses compared to global diagnoses.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2011. Vol. 41, no 6, 1262-1267 p.
Keyword [en]
Distributed algorithms, fault diagnosis, fault location, road vehicles
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-72015DOI: 10.1109/TSMCA.2011.2147311ISI: 000296017400017OAI: oai:DiVA.org:liu-72015DiVA: diva2:456038
Note
Funding Agencies|Swedish Foundation for Strategic Research||Scania CV AB||Available from: 2011-11-11 Created: 2011-11-11 Last updated: 2017-12-08

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Frisk, Erik

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