本文選題：飛機總裝脈動生產(chǎn)線 + 擴展Petri網(wǎng)(OOHTPN)�。� 參考：《南京理工大學》2017年碩士論文

【摘要】：隨著航空技術的高速發(fā)展和市場需求的增加,飛機制造模式正不斷轉變,縮短制造周期和實現(xiàn)快速響應已成為當務之急,先進的脈動式裝配已成為該背景下飛機總裝作業(yè)模式發(fā)展的必然趨勢。脈動式總裝通過站位劃分的方法能夠大幅度減少裝配時間,其柔性特征亦能夠很好適應當前飛機生產(chǎn)小批量多品種的特點,開展與之相關的研究意義重大。本文以飛機總裝脈動生產(chǎn)線規(guī)劃設計為背景,深入研究總裝脈動線建模仿真與優(yōu)化技術,具體工作如下:首先,分析飛機總裝脈動線作業(yè)模式及內容,在現(xiàn)有裝配線平衡優(yōu)化研究的基礎上結合總裝脈動線特點,針對性提出脈動線性能和可靠性評價指標。其次,結合復雜離散系統(tǒng)建模方法和實際飛機總裝配過程,提出基于面向對象分層賦時 Petri 網(wǎng)(Object-Oriented Hierarchical Timed Petri Nets,OOHTPN)的擴展 Petri 網(wǎng)的總裝建模方法,論述模型特性分析方法和建模步驟,并以部分總裝指令為實例進行驗證。再次,在對實際站位劃分環(huán)境和作業(yè)時間分析定義的基礎上,提出以裝配周期最短、站位利用率最高等為目標求解最小站位數(shù)的數(shù)學模型,研究基于OOHTPN總裝模型的啟發(fā)式運算方法并以實例驗證模型的合理性和求解方法的正確性。由于實際總裝線受到諸多不確定因素和隨機事件的影響,提出基于優(yōu)先規(guī)則的動態(tài)調度策略和優(yōu)化算法來維護脈動線的正常作業(yè)。最后,開展基于DELMIA V6軟件平臺的總裝脈動線模型在邏輯層和資源層的仿真與優(yōu)化技術研究,定義OOHTPN模型至DELMIA V6仿真模型的映射規(guī)則,制定仿真策略并對結果進行分析,對站位劃分研究進行驗證和改進。為便于總裝線模型仿真,對DELMIA V6進行二次開發(fā),增加產(chǎn)品層次快速劃分功能用以實現(xiàn)仿真模型的快速建立,增加仿真策略用以實現(xiàn)和實際裝配的關聯(lián)與監(jiān)控,增加仿真結果輸出功能用以指導實際裝配作業(yè)。
[Abstract]:With the rapid development of aviation technology and the increase of market demand, aircraft manufacturing mode is changing constantly. It is urgent to shorten manufacturing cycle and realize rapid response. Advanced pulsating assembly has become an inevitable trend in the development of aircraft assembly operation mode under this background. The pulsating assembly can greatly reduce the assembly time by the method of station division, and its flexible features can well adapt to the characteristics of the aircraft production in small quantities and many varieties, so it is of great significance to carry out the research related to it. Based on the planning and design of the aircraft assembly pulsating production line, the modeling, simulation and optimization techniques of the assembly pulsation line are studied in this paper. The specific work is as follows: firstly, the operation mode and content of the aircraft assembly pulsation line are analyzed. On the basis of the research on the balance optimization of assembly line, the performance and reliability evaluation index of pulsating line are put forward in combination with the characteristics of assembly pulsation line. Secondly, combined with the modeling method of complex discrete system and the total assembly process of actual aircraft, the method of assembly modeling of extended Petri net based on Object-Oriented Hierarchical Timed Petri NetOHTPN (Object-Oriented Hierarchical Timed Petri net) is proposed, and the analysis method of model characteristics and modeling steps are discussed. And take partial assembly instruction as an example to carry on the verification. Thirdly, on the basis of analyzing and defining the environment and working time of actual stations, a mathematical model is proposed to solve the minimum number of stations with the shortest assembly cycle and the highest utilization rate of stations. The heuristic operation method based on OOHTPN assembly model is studied, and the rationality of the model and the correctness of the solution method are verified by an example. Because the actual assembly line is affected by many uncertain factors and random events, a dynamic scheduling strategy and an optimization algorithm based on priority rules are proposed to maintain the normal operation of pulsating lines. Finally, the simulation and optimization technology of the assembly pulsation line model based on DELMIA V6 software platform in logic layer and resource layer is studied. The mapping rules from OOHTPN model to DELMIA V6 simulation model are defined, and the simulation strategy is worked out and the results are analyzed. Verify and improve the research of station location division. In order to facilitate the simulation of assembly line model, the secondary development of DELMIA V6 is carried out, and the function of product level fast partition is added to realize the fast establishment of simulation model, and the simulation strategy is added to realize the connection and monitoring with the actual assembly. The output function of simulation results is added to guide the actual assembly operation.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：V262.4;TP301.1

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