發(fā)布時間：2018-05-15 02:11

  本文選題：礦井提升機 + 故障診斷��； 參考：《長安大學》2015年碩士論文

【摘要】：礦井提升機屬于整個礦井生產(chǎn)的重要設(shè)備,其安全性與可靠性直接影響總體效率,如果發(fā)生故障,將會造成大量的經(jīng)濟損失,甚至還會危害人的生命,所以對礦井提升機故障診斷分析十分重要。經(jīng)過提升機系統(tǒng)分析表明,故障和事故總是隨機發(fā)生的,系統(tǒng)中某些狀態(tài)存在不確定性和模糊性,難以建立精確的數(shù)學模型。一般的處理方法可靠性較低,診斷效果不理想,已經(jīng)難以滿足實際需求。本文根據(jù)礦井提升機面臨的現(xiàn)場條件和實際需求,采用模糊故障樹分析處理異常情況,用故障樹分析法和模糊數(shù)學理論相結(jié)合實現(xiàn)故障分析,使系統(tǒng)恢復正常。本文首先敘述了提升機系統(tǒng)及故障分析面臨的困難,其次闡述了模糊故障樹,介紹了故障樹建立的步驟及故障樹模型,引入模糊數(shù)學理論,對故障樹中的不確定性問題模糊化處理,采取模糊數(shù)概率代替一個確定的數(shù)值概率,最后以“提升機滑動”為實例論證模糊故障樹是可行的;將模糊故障樹與故障處理技術(shù)結(jié)合,設(shè)計了礦井提升機故障診斷系統(tǒng),描述了對系統(tǒng)故障的處理過程及對故障進行推理的原理,以“提升機溫度故障”為例,運用模糊故障樹對系統(tǒng)故障進行定性和定量分析,求出重要度并依次排序比較,從大到小一一查看,找到故障原因,分析結(jié)果表明采用模糊故障樹的故障診斷方法是可靠的;將基于模糊故障樹的故障診斷方法應用于某某礦井提升機系統(tǒng)中,設(shè)計了模糊化模塊及模糊故障處理模塊,對其出現(xiàn)的故障進行分析處理,發(fā)現(xiàn)和實際狀況相一致,驗證了采用模糊故障樹的故障診斷技術(shù)能有效找到故障點,同時提高了可靠度。
[Abstract]:Mine hoist belongs to the important equipment in the whole mine production. Its safety and reliability directly affect the overall efficiency. If failure occurs, it will cause a lot of economic losses and even endanger human life. So the fault diagnosis and analysis of mine hoist is very important. The analysis of hoist system shows that faults and accidents always occur randomly and some states in the system are uncertain and fuzzy, so it is difficult to establish accurate mathematical model. The general processing method has low reliability and poor diagnostic effect, so it is difficult to meet the actual demand. According to the field condition and actual demand of mine hoist, this paper adopts fuzzy fault tree analysis to deal with abnormal situation, and combines fault tree analysis with fuzzy mathematics theory to realize fault analysis, so that the system can return to normal. In this paper, the difficulties of hoist system and fault analysis are described first, then the fuzzy fault tree is expounded, the steps of fault tree establishment and fault tree model are introduced, and the fuzzy mathematics theory is introduced. The fuzzy number probability is used instead of a definite numerical probability to deal with the uncertainty problem in the fault tree. Finally, the fuzzy fault tree is proved to be feasible by taking "hoist sliding" as an example. The fault diagnosis system of mine hoist is designed by combining fuzzy fault tree with fault processing technology. The process of system fault treatment and the principle of reasoning to fault are described. Taking "temperature fault of hoist" as an example, The fuzzy fault tree is used to analyze the system faults qualitatively and quantitatively, the importance degree is calculated and compared in order, the fault causes are found out from big to small one by one, and the results show that the fault diagnosis method based on fuzzy fault tree is reliable. The fault diagnosis method based on fuzzy fault tree is applied to the system of mine hoist. The fuzzification module and the fuzzy fault processing module are designed. It is proved that the fault diagnosis technology based on fuzzy fault tree can find fault point effectively and improve the reliability.
【學位授予單位】：長安大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD534

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本文編號：1890496