本文選題：虛擬制造單元 + 多期構(gòu)建　； 參考：《江蘇科技大學(xué)》2014年碩士論文

【摘要】：隨著產(chǎn)品生命周期的不斷縮短、產(chǎn)品品種的持續(xù)增加以及市場個性化要求的逐步提高，使得制造企業(yè)面臨著嚴(yán)峻的考驗。在這種動態(tài)變化的環(huán)境下，如何快速的反應(yīng)動態(tài)變化的市場需求已經(jīng)成為企業(yè)立于不敗之地的關(guān)鍵。虛擬單元制造系統(tǒng)VCMS（Virtual Cellular Manufacturing System）是一種兼顧生產(chǎn)柔性和效率提高的生產(chǎn)創(chuàng)新方式之一，并逐漸成為實現(xiàn)多品種、小批量生產(chǎn)方式的有效途徑。 單元構(gòu)建是單元實施的第一步，單元構(gòu)建問題對企業(yè)能否及時響應(yīng)顧客的需求起著決定性的作用。在不斷變化的市場需求環(huán)境中，虛擬制造單元可以根據(jù)不同產(chǎn)品的需求，當(dāng)任務(wù)積累到一定數(shù)量而周期性的創(chuàng)建虛擬單元，即某一階段的單元構(gòu)建可能并不適合下一階段，因此有必要對單元內(nèi)部配置隨時進行重構(gòu)。但針對制造系統(tǒng)中經(jīng)常會有訂單變化等擾動情況，當(dāng)新訂單出現(xiàn)時，原有工件一般都已配置好制造資源進行加工，在不擾動原有任務(wù)的前提下，新任務(wù)如何迅速地得到加工，也是亟待解決的問題。 本文以離散型企業(yè)實施虛擬單元生產(chǎn)方式作為研究的背景，在對虛擬單元生產(chǎn)方式的研究現(xiàn)狀上，特別是對單元構(gòu)建問題進行了深入分析之后，著重研究了單元構(gòu)建的動態(tài)性方面存在的問題。 研究了市場需求不斷變化情況下虛擬生產(chǎn)單元內(nèi)部配置可調(diào)整的多周期動態(tài)構(gòu)建問題，構(gòu)建了相應(yīng)的系統(tǒng)重構(gòu)規(guī)劃模型。模型設(shè)計中，考慮了動態(tài)需求、設(shè)備能力、操作順序、負(fù)荷平衡、加工路徑選擇以及批量設(shè)置問題，目標(biāo)是最小化操作成本、原材料移動成本、庫存持有成本和生產(chǎn)準(zhǔn)備成本之和，建立了相應(yīng)的混合整數(shù)規(guī)劃模型。針對離散型企業(yè)生產(chǎn)過程中經(jīng)常會出現(xiàn)訂單變化等擾動情況，研究了新訂單插入的虛擬單元動態(tài)構(gòu)建問題，建立了最大化零件加工路線間相似系數(shù)之和以及設(shè)備間負(fù)荷平衡、加工成本最小的多目標(biāo)數(shù)學(xué)規(guī)劃模型，提出了加入災(zāi)變算子的協(xié)同多目標(biāo)優(yōu)化進化算法求解該規(guī)劃模型，并通過新工件與現(xiàn)有虛擬單元的相似性判斷準(zhǔn)則，使得新工件盡快得到加工，同時使制造資源得到優(yōu)化。 為了驗證虛擬單元生產(chǎn)方式在離散型企業(yè)制造系統(tǒng)的應(yīng)用，本文結(jié)合某造船企業(yè)的實際情況，說明了虛擬單元生產(chǎn)方式下的動態(tài)構(gòu)建問題，提出了虛擬單元動態(tài)重構(gòu)方案，，對改善前后的效果進行了對比，結(jié)果顯示本文研究方案的可行性及有效性。
[Abstract]:With the continuous shortening of product life cycle, the continuous increase of product varieties and the gradual improvement of market individuation requirements, manufacturing enterprises are facing a severe test. In this dynamic environment, how to quickly respond to the dynamic changes of market demand has become the key to an invincible position. Virtual cell manufacturing system (VCMS(Virtual Cellular Manufacturing System) is one of the innovative ways to improve production flexibility and efficiency, and has gradually become an effective way to realize multi-variety and small-batch production. Unit building is the first step of unit implementation, and the problem of unit building plays a decisive role in the timely response of enterprises to customer needs. In the ever-changing market demand environment, virtual manufacturing cells can be created periodically according to the needs of different products when tasks accumulate to a certain number and periodically, that is, cell construction in one stage may not be suitable for the next stage. Therefore, it is necessary to reconfigure the internal configuration of the unit at any time. However, in the manufacturing system, there are always disturbances such as the change of orders, when new orders appear, the original jobs are generally equipped with manufacturing resources for processing, and how to process the new tasks quickly without disturbing the original tasks. It is also an urgent problem. In this paper, the implementation of virtual cell production in discrete enterprises as the background of the research, in the virtual cell production mode of the current situation, especially the problem of unit construction in-depth analysis, The dynamic aspects of unit construction are studied in detail. In this paper, the dynamic multi-period dynamic construction of the internal configuration of virtual production unit is studied under the changing market demand, and the corresponding system reconfiguration planning model is constructed. In the design of the model, dynamic requirements, equipment capability, operation sequence, load balance, process path selection and batch setting are considered. The goal is to minimize the operating cost and the cost of moving raw materials. Based on the sum of inventory holding cost and production reserve cost, a mixed integer programming model is established. In view of the disturbance such as the change of order in the production process of discrete enterprises, this paper studies the dynamic construction of virtual unit of new order insertion, and establishes the maximization of the sum of similarity coefficient among parts processing routes and the load balance among equipments. A multi-objective mathematical programming model with minimal machining cost is proposed. A cooperative multi-objective optimization evolutionary algorithm with catastrophe operator is proposed to solve the programming model. The similarity criterion between the new work piece and the existing virtual cell is used to determine the similarity between the new work piece and the existing virtual unit. The new workpiece can be processed as soon as possible, and the manufacturing resource can be optimized at the same time. In order to verify the application of virtual cell production mode in discrete enterprise manufacturing system, the dynamic construction problem of virtual cell production mode is explained in this paper, and the dynamic reconfiguration scheme of virtual cell is put forward according to the actual situation of a shipbuilding enterprise. The results show that the scheme is feasible and effective.
【學(xué)位授予單位】：江蘇科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：F406.2;F426.474

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