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題 名 | 模糊故障診斷方法之研究=A Study of Fuzzy Fault Diagnosis Strategy |
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作 者 | 蔡有藤; | 書刊名 | 德霖學報 |
卷 期 | 22 2008.06[民97.06] |
頁 次 | 頁255-264 |
分類號 | 448.942 |
關鍵詞 | 模糊估計; 故障診斷; 維護; Fuzzy evaluation; Fault diagnosis and maintenance; |
語 文 | 中文(Chinese) |
中文摘要 | 隨著科技的進步與自動化技術發展,機台設備漸趨高功能與複雜化,機台設備的保養維護越來越重 要;透過故障診斷系統的建立,縮短停機維護時間,使設備發生故障時能迅速排除故障,為製造系統管 理上的重要課題。本文探討系統故障徵兆(Symptoms)與故障源的建立方法,利用故障樹分析(Fault Tree Analysis)分析各機具(Tools)可能失效,建立機具失效的判定法則,系統故障徵兆與機具失效間的對應關 係。利用模糊理論建立故障徵兆語意表示,對異警徵兆不明確問題建立故障源與徵兆之隸數度,發展模 糊故障診斷推論策略;此外,結合貝式估計方法,分析故障底事件之失效機率,以為決定維護優先次序 依據。透過二階段故障診斷作業,對徵兆具模糊性的故障問題,提供必要的故障維修資訊,使維護人員 可迅速檢出故障源。此外,導入以診斷維修為導向之設計概念(Design for Diagnosis and Maintenance), 藉此改善設備可靠度、維護度、操作度,提昇設備妥善率及生產能力。 |
英文摘要 | Following the development of production technology, equipment is more and more complex and maintenance is also more important in modern industry. In order to rapidly fix the faults and shorten the time of maintenance, fault diagnosis is more critical in maintenance action. This paper presented the method of fuzzy fault diagnosis to support the development remote fault diagnosis system. The technique of Fault Tree Analysis (FTA) is used to drawn out the possible faults and the symptoms of a system. The fuzzy evaluation is used to process the problems of which the faults and the symptoms are dealing with the uncertainty. The faulted subsystem was first decided by a fuzzy operation. The set theory is used to investigate the failure probabilities of the failure causes in each subsystem. The Bayesian estimation is then taken to evaluate the priority of failure for the causes. The web-based diagnosis framework was also suggested to development far-distance fault diagnosis system. Further, the concepts of design for diagnosis and design for maintenance are also proposed for promoting the availability of system in use. |
本系統中英文摘要資訊取自各篇刊載內容。