【摘要】：隨著現(xiàn)代科學(xué)技術(shù)的不斷發(fā)展,將各個分離的設(shè)備單元按照特定連接方式進行集成,形成具有高度耦合、高度關(guān)聯(lián)的設(shè)備集成系統(tǒng)。設(shè)備集成系統(tǒng)已廣泛成為現(xiàn)代生產(chǎn)系統(tǒng)的主流模式,它的可靠性對系統(tǒng)生產(chǎn),行業(yè)的正常、高效運營起著重要的作用。但是對于設(shè)備集成系統(tǒng)的可靠性分析還僅限于利用傳統(tǒng)的單一方法,不能滿足其結(jié)構(gòu)復(fù)雜、設(shè)備連接方式多樣等特點的可靠性分析的需求。如何基于設(shè)備單元的可靠性對系統(tǒng)的可靠性進行分析預(yù)測,對復(fù)雜設(shè)備集成系統(tǒng)的狀態(tài)研究則顯得尤為重要。 本文針對設(shè)備集成系統(tǒng)的結(jié)構(gòu)組成特點及成熟網(wǎng)絡(luò)理論,分別以設(shè)備單元和子系統(tǒng)為節(jié)點,故障率為節(jié)點屬性；節(jié)點之間作用關(guān)系為邊,作用強度為邊權(quán),構(gòu)建了一種可以反映系統(tǒng)原貌的可靠性網(wǎng)絡(luò)模型——基于網(wǎng)絡(luò)理論的可靠性計算方法。該方法具有結(jié)構(gòu)化、模塊化、網(wǎng)絡(luò)化建模特點,可以根據(jù)設(shè)備單元的可靠性自下而上的有效分析系統(tǒng)可靠性。提出了節(jié)點可靠度的計算方法,該方法不同于以往的僅依賴節(jié)點故障率而是綜合考慮了節(jié)點之間的相互關(guān)聯(lián)和節(jié)點本身的可靠性。根據(jù)節(jié)點的可靠度利用GENERATER算法得出了系統(tǒng)的最大概率狀態(tài)空間；在系統(tǒng)模態(tài)空間下,基于模型中節(jié)點間的作用強度,對馬爾科夫過程轉(zhuǎn)移矩陣進行改進,并采用可用度、失效頻率和失效平均間隔時間參數(shù)評估設(shè)備集成系統(tǒng)的可靠性。通過可靠性相關(guān)指標(biāo)及系統(tǒng)結(jié)構(gòu)中節(jié)點的結(jié)構(gòu)重要度,得到系統(tǒng)的關(guān)鍵節(jié)點�；跇�(gòu)建的可靠性計算方法對高速列車部分系統(tǒng)進行了可靠性建模與可靠性計算應(yīng)用與驗證。研究表明,該可靠性計算方法為現(xiàn)代設(shè)備集成系統(tǒng)的可靠性研究提供了新的參考方法。
[Abstract]:With the continuous development of modern science and technology, each separated device unit is integrated according to the specific connection mode to form a highly coupled and highly related device integration system. Equipment integration system has become the mainstream mode of modern production system, and its reliability plays an important role in the system production, the normal and efficient operation of the industry. However, the reliability analysis of the equipment integration system is limited to the traditional single method, which can not meet the needs of reliability analysis, such as complex structure and various equipment connection modes. How to analyze and predict the reliability of the system based on the reliability of the equipment unit is particularly important for the study of the state of the complex equipment integrated system. According to the structural characteristics and mature network theory of the equipment integration system, this paper takes the equipment unit and subsystem as the node, the failure rate as the node attribute, the action relationship between the nodes as the edge, the action intensity as the edge weight, and the fault rate as the node attribute. A reliability network model based on network theory, which can reflect the original appearance of the system, is constructed. This method has the characteristics of structured, modular and networked modeling, and can effectively analyze the reliability of the system from bottom to top according to the reliability of the equipment unit. A new method for calculating the reliability of nodes is proposed. This method is different from the previous method, which only depends on the failure rate of nodes, but takes into account the correlation between nodes and the reliability of nodes themselves. According to the reliability of nodes, the maximum probabilistic state space of the system is obtained by using GENERATER algorithm, and the Markov process transfer matrix is improved based on the interaction intensity between nodes in the modal space of the system, and the availability is adopted. Failure frequency and mean interval time parameters are used to evaluate the reliability of the equipment integrated system. The key nodes of the system are obtained by the reliability related indexes and the structural importance of the nodes in the system structure. Based on the reliability calculation method, the reliability modeling and reliability calculation of some high-speed train systems are carried out. The research shows that the reliability calculation method provides a new reference method for the reliability research of modern equipment integration system.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U270;TB114.3

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