A hybrid prognostic methodology and its application to well-controlled engineering systems
Başlık çevirisi mevcut değil.
- Tez No: 402172
- Danışmanlar: DOÇ. DR. FATİH CAMCI, PROF. DR. IAN K. JENNIONS
- Tez Türü: Doktora
- Konular: Mühendislik Bilimleri, Engineering Sciences
- Anahtar Kelimeler: Integrated Vehicle Health Management, Prognostics and Health Management, Condition Based Maintenance, Hybrid Prognostics, Physics-based Prognostics, Data-driven Prognostics, Similarity-based Prognostics, Filter Clogging Modelling, Fatigue Crack Growth Modelling
- Yıl: 2015
- Dil: İngilizce
- Üniversite: Cranfield University
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 179
Özet
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Özet (Çeviri)
This thesis presents a novel hybrid prognostic methodology, integrating physics-based and data-driven prognostic models, to enhance the prognostic accuracy, robustness, and applicability. The presented prognostic methodology integrates the short-term predictions of a physics-based model with the longer term projection of a similarity-based data-driven model, to obtain remaining useful life estimations. The hybrid prognostic methodology has been applied on specific components of two different engineering systems, one which represents accelerated, and the other a nominal degradation process. Clogged filter and fatigue crack propagation failure cases are selected as case studies. An experimental rig has been developed to investigate the accelerated clogging phenomena whereas the publicly available Virkler fatigue crack propagation dataset is chosen after an extensive literature search and dataset analysis. The filter clogging experimental rig is designed to obtain reproducible filter clogging data under different operational profiles. This data is thought to be a good benchmark dataset for prognostic models. The performance of the presented methodology has been evaluated by comparing remaining useful life estimations obtained from both hybrid and individual prognostic models. This comparison has been based on the most recent prognostic evaluation metrics. The results show that the presented methodology improves accuracy, robustness and applicability. The work contained herein is therefore expected to contribute to scientific knowledge as well as industrial technology development.
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