【摘要】：制造型企業(yè)要想獲得高經(jīng)濟(jì)效益,必須有效控制生產(chǎn)系統(tǒng)的維修成本。系統(tǒng)結(jié)構(gòu)日益復(fù)雜,組成設(shè)備之間的聯(lián)系日益緊密,故障規(guī)律也趨向于多樣化。如何建立一種切實(shí)可行的維修策略以減少企業(yè)的維修成本和停機(jī)損失已成為企業(yè)運(yùn)營(yíng)管理中必須要考慮的關(guān)鍵問題。本文針對(duì)多設(shè)備混聯(lián)結(jié)構(gòu)的生產(chǎn)系統(tǒng),根據(jù)系統(tǒng)需要控制的運(yùn)行目標(biāo)的不同,分別建立了以可靠度和損失期望為基礎(chǔ)的機(jī)會(huì)維修策略,綜合考慮設(shè)備間維修的經(jīng)濟(jì)相關(guān)性和結(jié)構(gòu)相關(guān)性,在有限時(shí)間域內(nèi)建立了以維修成本率最小為目標(biāo)的維修模型。首先,闡述了本文的研究背景及意義,對(duì)國(guó)內(nèi)外研究現(xiàn)狀進(jìn)行綜述。在此基礎(chǔ)上詳細(xì)介紹了維修管理理論、可靠性和機(jī)會(huì)維修的相關(guān)概念,并對(duì)建模所需的數(shù)學(xué)基礎(chǔ)知識(shí)進(jìn)行了介紹。其次,將役齡改善因子及故障率劣化因子綜合考慮來描述設(shè)備的故障率演化規(guī)則。以單設(shè)備為研究對(duì)象,先后建立了基于可靠度和損失期望的預(yù)防維修模型,并據(jù)此進(jìn)行了算例分析,求得單設(shè)備在不同決策依據(jù)下的最優(yōu)預(yù)防維修策略。然后,在單設(shè)備建模的基礎(chǔ)上,將研究對(duì)象拓展為多設(shè)備混聯(lián)結(jié)構(gòu)的生產(chǎn)系統(tǒng)。引入機(jī)會(huì)維修思想,綜合考慮經(jīng)濟(jì)相關(guān)性和結(jié)構(gòu)相關(guān)性,分別建立了基于可靠度和損失期望的多設(shè)備機(jī)會(huì)維修模型。引入結(jié)構(gòu)影響矩陣來描述設(shè)備間的結(jié)構(gòu)相關(guān)性,并運(yùn)用遺傳算法對(duì)模型進(jìn)行了算例分析。最后,以M企業(yè)的生產(chǎn)線為實(shí)證研究對(duì)象,通過分析設(shè)備的歷史故障數(shù)據(jù),對(duì)文中建立的模型進(jìn)行了驗(yàn)證,并分析了影響維修決策的關(guān)鍵因素,為模型的應(yīng)用提供支持。
[Abstract]:In order to obtain high economic benefit, manufacturing enterprises must effectively control the maintenance cost of production system. The structure of the system is becoming more and more complex, the relationship between the components is becoming more and more close, and the fault rules tend to be diversified. How to establish a feasible maintenance strategy to reduce the cost of maintenance and loss of shutdown has become a key issue that must be considered in the operation and management of enterprises. In this paper, an opportunistic maintenance strategy based on reliability and loss expectation is established for the production system with multi-equipment hybrid structure, according to the different operation objectives to be controlled by the system. Considering the economic and structural correlation of maintenance, a maintenance model with minimum maintenance cost rate is established in finite time domain. Firstly, the research background and significance of this paper are expounded, and the current research situation at home and abroad is summarized. On this basis, the theory of maintenance management, the concepts of reliability and opportunity maintenance are introduced in detail, and the basic mathematical knowledge of modeling is also introduced. Secondly, the service age improvement factor and the failure rate deterioration factor are considered synthetically to describe the evolution rules of the equipment failure rate. A preventive maintenance model based on reliability and loss expectation is established for a single equipment, and an example is given to obtain the optimal preventive maintenance strategy for a single equipment based on different decision bases. Then, on the basis of single equipment modeling, the research object is extended to multi-equipment hybrid production system. An opportunity maintenance model based on reliability and loss expectation is established by introducing the idea of opportunistic maintenance and considering the economic and structural correlation. The structural influence matrix is introduced to describe the structural correlation between devices, and the genetic algorithm is used to analyze the model. Finally, taking the production line of M enterprise as the empirical research object, the model is verified by analyzing the historical fault data of the equipment, and the key factors influencing the maintenance decision are analyzed to provide support for the application of the model.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TH17

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