(A) study on online monitoring system development using empirical models경험 모델을 이용한 온라인 모니터링 시스템 개발에 관한 연구

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dc.contributor.advisorChang, Soon-Heung-
dc.contributor.advisor장순흥-
dc.contributor.authorAn, Sang-Ha-
dc.contributor.author안상하-
dc.date.accessioned2011-12-14T08:06:41Z-
dc.date.available2011-12-14T08:06:41Z-
dc.date.issued2010-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=455408&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/49031-
dc.description학위논문(박사) - 한국과학기술원 : 원자력및양자공학과, 2010.08, [ ix, 107 p. ]-
dc.description.abstractMaintenance technologies have been progressed from a time-based to a condition-based manner. The fundamental idea of condition-based maintenance (CBM) is built on the real-time diagnosis of impending failures and/or the prognosis of residual lifetime of equipment by monitoring health conditions using various sensors. The success of CBM, therefore, hinges on the capability to develop accurate diagnosis/prognosis models. Even though there may be an unlimited number of methods to implement models, the models can normally be classified into two categories in terms of their origins: using physical principles or historical observations. I have focused on the latter method (sometimes referred as the empirical model based on statistical learning) because of some practical benefits such as context-free applicability, configuration flexibility, and customization adaptability. While several pilot-scale systems using empirical models have been applied to work sites in Korea, it should be noticed that these do not seem to be generally competitive against conventional physical models. As a result of investigating the bottlenecks of previous attempts, I have recognized the need for a novel strategy for grouping correlated variables such that an empirical model can accept not only statistical correlation but also some extent of physical knowledge of a system. Detailed examples of problems are as follows: (1) missing of important signals in a group caused by the lack of observations, (2) problems of signals with the time delay, (3) problems of optimal kernel bandwidth. In this study an improved statistical learning framework including the proposed strategy and case studies illustrating the performance of the method are presented.eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.subject상태기반정비-
dc.subject통계적 학습-
dc.subject경험 모델-
dc.subject온라인 모니터링-
dc.subject커널 회귀분석-
dc.subjectKernel Regression-
dc.subjectConditon-based Maintenance-
dc.subjectStatistical Learning-
dc.subjectEmpirical Model-
dc.subjectOnline Monitoring-
dc.title(A) study on online monitoring system development using empirical models-
dc.title.alternative경험 모델을 이용한 온라인 모니터링 시스템 개발에 관한 연구-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN455408/325007 -
dc.description.department한국과학기술원 : 원자력및양자공학과, -
dc.identifier.uid020065092-
dc.contributor.localauthorAn, Sang-Ha-
dc.contributor.localauthor안상하-
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