期刊
IEEE SYSTEMS JOURNAL
卷 9, 期 4, 页码 1197-1207出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSYST.2014.2343752
关键词
Condition monitoring; failure analysis; maintenance; planning; prognostics and health management (PHM)
类别
资金
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo [2011/17610-0]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
Remaining useful life (RUL) estimations obtained from a prognostics and health monitoring (PHM) system can be used to plan in advance for the repair of components before a failure occurs. However, when system architecture is not taken into account, the use of PHM information may lead the operator to rush to replace a component that would not affect immediately the operation of the system under consideration. This paper presents a methodology for decision support in maintenance planning with application in aeronautical systems. The proposed methodology combines system architecture information and RUL estimations for all components in the system under study, allowing the estimation of an overall system-level RUL (S-RUL). The S-RUL information can be used to support maintenance decisions regarding the replacement of multiple components. For this purpose, the decision problem can be cast into an optimization framework involving the minimization of the component replacement cost under a safety constraint. Two case studies are used to illustrate the S-RUL concept, as well as the proposed optimization methodology.
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