Cross-condition fault diagnosis of an aircraft environmental control system (ECS) by transfer learning

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dc.contributor.authorJia, Lilin
dc.contributor.authorEzhilarasu, Cordelia Mattuvarkuzhali
dc.contributor.authorJennions, Ian K.
dc.date.accessioned2024-01-19T13:28:29Z
dc.date.available2024-01-19T13:28:29Z
dc.date.issued2023-12-09
dc.description.abstractFault diagnosis models based on machine learning are often subjected to degradation in performance when dealing with data that are differently distributed than the training data. Such an occasion is common in reality because machines usually operate under various conditions. Transfer learning is a solution for the performance degradation of cross-condition fault diagnosis problems. This paper studies how transfer learning algorithms transfer component analysis (TCA) and joint distribution alignment (JDA) improve the cross-condition fault diagnosis accuracy of an aircraft environmental control system (ECS). Both methods work by transforming the source and target domain data into a feature space where their distributions are aligned to allow a uniform classifier to act accurately in both domains. This paper discovered that both TCA and JDA produce significantly more accurate results than traditional methods on target domains with unlabelled ECS data taken at different operating conditions than the source domain. Additionally, when dealing with unlabelled data from unknown conditions bearing a different composition of classes in the target domain, TCA is found to be more robust and accurate, generating an average predictive accuracy of 95.22%, which demonstrates the ability of transfer learning in solving similar problems in the real-world application of fault diagnosis.en_UK
dc.identifier.citationJia L, Ezhilarasu CM, Jennions IK. (2023) Cross-condition fault diagnosis of an aircraft environmental control system (ECS) by transfer learning. Applied Sciences, Volume 13, Issue 24, December 2023, Article Number 13120en_UK
dc.identifier.eissn2076-3417
dc.identifier.urihttps://doi.org/10.3390/app132413120
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/20695
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectenvironmental control systemen_UK
dc.subjectfault diagnosisen_UK
dc.subjectmachine learningen_UK
dc.subjectmaintenanceen_UK
dc.subjecttransfer learningen_UK
dc.titleCross-condition fault diagnosis of an aircraft environmental control system (ECS) by transfer learningen_UK
dc.typeArticleen_UK
dcterms.dateAccepted2023-12-07

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