本文選題：虛擬單元制造　切入點(diǎn)：動(dòng)態(tài)調(diào)度　出處：《江蘇科技大學(xué)》2015年碩士論文

【摘要】：近年來,隨著我國(guó)經(jīng)濟(jì)的快速發(fā)展以及技術(shù)的不斷進(jìn)步,市場(chǎng)競(jìng)爭(zhēng)變得越來越激烈,用戶的需求也朝多樣化的趨勢(shì)發(fā)展,這將導(dǎo)致多品種小批量的生產(chǎn)方式會(huì)逐步成為生產(chǎn)制造業(yè)的主流生產(chǎn)方式。為了適應(yīng)多樣、動(dòng)態(tài)和復(fù)雜的市場(chǎng)環(huán)境,對(duì)制造型企業(yè)就要提出更高的要求。因此,采用先進(jìn)的制造技術(shù)以及高效的管理機(jī)制,以縮短生產(chǎn)周期,提高生產(chǎn)系統(tǒng)的效率、柔性和競(jìng)爭(zhēng)能力,已經(jīng)成為一個(gè)研究的熱點(diǎn)問題。虛擬單元制造系統(tǒng)作為單元制造系統(tǒng)的新發(fā)展,正逐漸成為一種受到人們重視的先進(jìn)制造方式。虛擬單元制造能夠有效降低在制品庫(kù)存和生產(chǎn)成本,減少設(shè)備的移動(dòng)成本和調(diào)整時(shí)間,從而提高生產(chǎn)企業(yè)的敏捷性和生產(chǎn)柔性,同時(shí)也大大提高了企業(yè)的資源使用效率。虛擬生產(chǎn)單元本質(zhì)上就是一個(gè)生產(chǎn)計(jì)劃與控制系統(tǒng),它需要對(duì)生產(chǎn)任務(wù)和生產(chǎn)資源在單元間和單元內(nèi)進(jìn)行分配,消解單元內(nèi)及單元間的資源需求沖突,監(jiān)控生產(chǎn)任務(wù)的執(zhí)行。但由于虛擬單元制造環(huán)境中的復(fù)雜性、動(dòng)態(tài)性以及資源的有限性,在調(diào)度的實(shí)施過程中可能出現(xiàn)不確定的擾動(dòng)事件,并引起資源沖突,使得生產(chǎn)計(jì)劃無法正常實(shí)施,造成任務(wù)拖期、生產(chǎn)系統(tǒng)效率低下等問題。在實(shí)際生產(chǎn)中,生產(chǎn)系統(tǒng)的效率和穩(wěn)定性通常會(huì)表現(xiàn)出一定的矛盾,出現(xiàn)動(dòng)態(tài)擾動(dòng)時(shí)反復(fù)重調(diào)度會(huì)擾亂生產(chǎn)的實(shí)施。因此,在生產(chǎn)過程中,應(yīng)考慮實(shí)際車間信息和隨機(jī)事件可能帶來的調(diào)整和變化,在生產(chǎn)狀態(tài)發(fā)生改變時(shí),采取有效的調(diào)整措施進(jìn)行有效的管理和控制,保證生產(chǎn)過程的連續(xù)性和高效率。本文通過對(duì)虛擬單元調(diào)度理論及生產(chǎn)調(diào)度過程中存在問題的研究,在分析隨機(jī)擾動(dòng)事件的前提下,提出了以事件與周期驅(qū)動(dòng)為基礎(chǔ)的多級(jí)動(dòng)態(tài)穩(wěn)健調(diào)度策略,以保證生產(chǎn)過程的效率和穩(wěn)定,提高虛擬制造單元生產(chǎn)調(diào)度的柔性。在分析事件擾動(dòng)率的基礎(chǔ)上,針對(duì)具有不同影響程度的事件分別采取三種不同的調(diào)度策略:緩沖整合策略、順序調(diào)整策略和重調(diào)度策略。緩沖整合策略充分利用了機(jī)器上工序之間的緩沖,工序的加工進(jìn)行簡(jiǎn)單的平移。順序調(diào)整策略考慮了新插入加工工序和已有工序的加工優(yōu)先級(jí),確定工序加工的先后順序。在重調(diào)度策略中,考慮了設(shè)備柔性因素,提出了基于沖突消解的重調(diào)度機(jī)制,針對(duì)不同沖突類型分別采用部分重調(diào)度或完全重調(diào)度策略。部分重調(diào)度只需對(duì)存在沖突的時(shí)間區(qū)域內(nèi)作出生產(chǎn)計(jì)劃調(diào)整,無需對(duì)整個(gè)調(diào)度期重新安排,這在保證工期不發(fā)生延遲的情況下提高了生產(chǎn)系統(tǒng)的穩(wěn)定性;完全重調(diào)度策略在整個(gè)調(diào)度期內(nèi)調(diào)整生產(chǎn)計(jì)劃,以保證完工時(shí)間不會(huì)出現(xiàn)延誤或使得延誤最小化。多級(jí)調(diào)度策略在保證系統(tǒng)生產(chǎn)效率的前提下,提高了生產(chǎn)系統(tǒng)生產(chǎn)過程的穩(wěn)定性。為驗(yàn)證本文所提出的虛擬單元多級(jí)動(dòng)態(tài)穩(wěn)健調(diào)度策略的效果,以滬東船廠曲面分段制造車間中的部分零件加工過程為背景,將本文所提方法應(yīng)用其中,對(duì)結(jié)果進(jìn)行分析總結(jié),驗(yàn)證了方法的可行性和有效性。
[Abstract]:In recent years, with the continuous progress of the rapid development of China's economy and technology, market competition becomes increasingly fierce, the demand of the user also towards the diversification trend of development, which will lead to many varieties and small batch production mode will gradually become the mainstream mode of production manufacturing industry. In order to adapt to the diverse, dynamic and complex market environment. And put forward higher requirements to manufacturing enterprises. Therefore, the use of advanced manufacturing technology and efficient management mechanism, in order to shorten the production cycle, improve the efficiency of the production system, the flexible and competitive ability, has become a hot research issue. The new development of virtual cellular manufacturing system as a unit of manufacturing system. It has gradually become a kind of advanced manufacturing mode by people's attention. The virtual manufacturing unit can effectively reduce the inventory and production costs, reduce the cost and time adjustment of mobile equipment Thus, the production enterprises to improve the agility and flexibility of production, but also greatly improve the efficiency of resource use. Virtual enterprise production unit is essentially a production planning and control system, it needs the production tasks and production resources are distributed among units and units, resource conflict resolution unit and units. And monitor the production task. But because of the complexity of the virtual manufacturing unit in the environment, limited resources and dynamic, uncertain disturbance events may appear in the process of implementing scheduling, and cause resource conflicts, make production plan can not be properly implemented, resulting in task tardiness, low efficiency and other production problems. In the actual production, the efficiency and stability of the production system will usually show a certain contradiction, the implementation of dynamic disturbance re scheduling will disrupt production. Because of this, in the production In the process, should consider the actual workshop information and random events may bring about adjustments and changes in production status changes, take effective measures to manage and control, to ensure continuous and efficient production process. Based on the virtual unit scheduling theory and the problems of production scheduling in the process. In the premise of analyzing random disturbance events, put forward to the event and cycle driven multilevel based dynamic robust scheduling strategy to ensure the efficiency and stability of the production process, improve the virtual manufacturing cell scheduling flexibility. In the analysis of disturbance event rate on the basis of the event has different influence degrees take three different respectively: buffer scheduling strategy integration strategy in order to adjust their strategy and scheduling strategy. Buffer integration strategy makes full use of the machine processes the buffer between processes Processing of simple translation. In order to adjust the strategy considers the processing process and the new priority insertion process, determine the sequence of processes. In the scheduling strategy, considering the flexible equipment factors, this paper puts forward the scheduling mechanism based on conflict resolution, according to the different types of conflicts were used in part or completely rescheduling rescheduling partial rescheduling strategy. According to the production plan to adjust the time of conflict in the region, without re arrangement of the entire scheduling period, the guarantee period does not occur in the case of delay improves the stability of production system; complete rescheduling strategy to adjust the production plan in the whole dispatching period, to ensure the completion time is not the delay or delay minimization. The hierarchical scheduling strategy makes the system under the premise of ensuring production efficiency, improve the stability of the production process of the production system in order to verify. Virtual unit multistage dynamic proposed robust scheduling strategy to surface effect, Hudong Shipyard segment parts machining workshop as background, the application of the method proposed in this paper, the results were analyzed and summarized, verify the feasibility and effectiveness of the method.

【學(xué)位授予單位】：江蘇科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：F273;F424

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本文編號(hào)：1704338