本文關(guān)鍵詞： 數(shù)控機床 故障預(yù)警 壽命預(yù)測 模糊神經(jīng)網(wǎng)絡(luò)　出處：《西南交通大學》2013年碩士論文　論文類型：學位論文

【摘要】：針對數(shù)控機床的多樣性、異構(gòu)性以及多種高新技術(shù)高度集成的特點,研究了數(shù)控機床關(guān)鍵部件的性能退化機理,確定了數(shù)控機床關(guān)鍵部件的高敏感度信號特征,給出了高敏感度信號特征的數(shù)據(jù)結(jié)構(gòu),開發(fā)了數(shù)控機床關(guān)鍵部件信號的獲取和處理技術(shù),搭建了故障特征數(shù)據(jù)庫。 結(jié)合高檔數(shù)控機床故障頻發(fā)特點,構(gòu)建了數(shù)控機床的性能退化模型,完善了故障預(yù)警及機床狀態(tài)評估理論,開發(fā)了數(shù)控機床控制系統(tǒng)的運行狀態(tài)信息獲取模塊,利用性能退化模型擬合信號高敏感度特征與數(shù)控機床關(guān)鍵功能部件期望剩余壽命之間的映射關(guān)系,探究數(shù)控機床關(guān)鍵部件的性能退化規(guī)律,建立了維修專家知識庫。 本文開發(fā)完成的具有自主知識產(chǎn)權(quán)和高技術(shù)附加值的“高檔數(shù)控機床故障預(yù)警和診斷系統(tǒng)”,有效實現(xiàn)了高檔數(shù)控機床的在線和遠程故障預(yù)警和自動診斷功能。目前,該系統(tǒng)已在多臺數(shù)控機床上推廣應(yīng)用。機床狀態(tài)的檢測和故障的診斷都由計算機自動完成,其診斷的高準確性和高效率遠高于基于經(jīng)驗的維修模式。同時,本系統(tǒng)在預(yù)警故障的同時還提供了相應(yīng)的處理方法,及時給出備件訂購需求,有效縮短了設(shè)備停工時間,大大降低設(shè)備故障的排除難度,極大提高了維修效率。應(yīng)用實踐表明,本系統(tǒng)能夠有效保障數(shù)控機床長期安全可靠的運行,為數(shù)控機床用戶制定生產(chǎn)計劃或維護維修計劃提供依據(jù)。
[Abstract]:In view of the diversity, heterogeneity and high integration of high and new technology of CNC machine tools, the mechanism of performance degradation of key components of NC machine tools is studied, and the characteristics of high sensitivity signals of key components of NC machine tools are determined. The data structure of high sensitivity signal feature is given, the signal acquisition and processing technology of key components of NC machine tool is developed, and the fault feature database is built. Combined with the frequent fault characteristics of high-grade CNC machine tools, the performance degradation model of NC machine tools is constructed, and the theory of fault warning and machine tool state evaluation is improved. The operation state information acquisition module of NC machine tool control system is developed, and the mapping relationship between the high sensitivity characteristic of signal and the expected residual life of key functional components of CNC machine tool is fitted by performance degradation model. This paper probes into the law of performance degradation of key parts of NC machine tools, and establishes a knowledge base of maintenance experts. In this paper, with independent intellectual property rights and high-tech added value of the "high-grade CNC machine tool fault warning and diagnosis system". The functions of on-line and remote fault warning and automatic diagnosis of high-grade NC machine tools are effectively realized. The system has been widely used in many NC machine tools. The condition detection and fault diagnosis of the machine tools are automatically completed by the computer. The high accuracy and high efficiency of the diagnosis is much higher than the maintenance mode based on experience. At the same time. At the same time, the system also provides the corresponding treatment method, gives the spare parts ordering demand in time, effectively shortens the equipment shutdown time, and greatly reduces the difficulty of troubleshooting the equipment fault. The application practice shows that the system can effectively guarantee the long-term safe and reliable operation of CNC machine tools and provide the basis for NC machine tool users to make production plans or maintenance and maintenance plans.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TG659;TP277

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