本文選題：模塊化設(shè)計　切入點：可拓理論　出處：《南京航空航天大學(xué)》2014年碩士論文

【摘要】：模塊化設(shè)計作為機(jī)械產(chǎn)品開發(fā)與創(chuàng)新設(shè)計的重要設(shè)計方法之一,由于其設(shè)計周期短,并且能夠快速響應(yīng)市場需求的特點深受企業(yè)的重視�？赏貙W(xué)以形式化的模型研究事物的拓展性,主要用于解決事物間的矛盾問題,這為模塊化設(shè)計提供了一種形式化的知識描述方式和模型化的處理矛盾問題的方法。本文引入了公理化設(shè)計理論和可拓學(xué)理論,對機(jī)械產(chǎn)品的模塊化設(shè)計過程中各種信息的基元建模、模塊劃分、模塊配置過程進(jìn)行了研究,并用實例進(jìn)行了驗證。首先,針對機(jī)械產(chǎn)品的模塊化設(shè)計過程中各種設(shè)計信息在知識表示方面不足,引入了可拓學(xué)的基元理論,將基元理論與傳統(tǒng)的知識表示方法相結(jié)合,對機(jī)械產(chǎn)品模塊化設(shè)計信息的可拓知識表示進(jìn)行了研究。其次,通過對現(xiàn)有的模塊劃分方法進(jìn)行了研究,論文給出了基于公理化設(shè)計與譜系聚類的模塊劃分方法,該方法先應(yīng)用公理化設(shè)計對機(jī)械產(chǎn)品進(jìn)行自頂向下的層次性分解,通過“Z”字型映射,得到其結(jié)構(gòu)模塊,然后基于分解得到的層次模型,從功能、結(jié)構(gòu)、接口等方面對子模塊進(jìn)行相關(guān)性分析,并采用譜系聚類方法對子模塊進(jìn)行自底向上的聚類,實現(xiàn)了對產(chǎn)品的層次性模塊劃分。文中還針對模塊化設(shè)計過程中模塊檢索和模塊修改等方面的不足,研究了現(xiàn)有模塊檢索方法和模塊修改技術(shù),提出了一種基于改進(jìn)可拓距的相似度計算方法,將已有的模塊實例重用到新的產(chǎn)品開發(fā)中;同時還針對產(chǎn)品設(shè)計過程中存在著功能需求與設(shè)計結(jié)構(gòu)之間的矛盾,引入了可拓學(xué)的矛盾不相容問題的求解模型,給出了可拓模塊修改的相容度函數(shù),用來判斷設(shè)計目標(biāo)與設(shè)計條件之間是否相容,并建立了一種基于相似模塊重用的機(jī)械產(chǎn)品的可拓模塊配置模型。最后在上述理論研究的基礎(chǔ)上,建立了水輪機(jī)模塊化設(shè)計系統(tǒng)的體系結(jié)構(gòu),分析了系統(tǒng)的主要功能模塊和運(yùn)行流程,完成了水輪機(jī)模塊化設(shè)計系統(tǒng)的界面開發(fā),并給出了系統(tǒng)的運(yùn)行實例。
[Abstract]:As one of the important design methods of mechanical product development and innovative design, modular design is paid much attention by enterprises because of its short design period and its ability to respond quickly to market demand.Extensibility of things is studied by formal model, which is mainly used to solve the contradiction between things, which provides a formal knowledge description method and a modeling method to deal with the contradiction problem for modular design.In this paper, the axiomatic design theory and extension theory are introduced, and the elementary modeling, module partition and module configuration process of all kinds of information in the process of modular design of mechanical products are studied and verified by an example.First of all, aiming at the lack of knowledge representation of various design information in the process of modular design of mechanical products, the basic theory of extension is introduced, which combines the primitive theory with the traditional knowledge representation method.The extension knowledge representation of modular design information for mechanical products is studied.Secondly, through the research of the existing module partition method, this paper presents the module partition method based on axiomatic design and pedigree clustering, which firstly applies axiomatic design to the top-down hierarchical decomposition of mechanical products.Through the "Z" font mapping, the structure module is obtained, and then based on the decomposition of the hierarchical model, from the function, structure, interface and other aspects of the sub-module correlation analysis,The hierarchical module partition is realized by using the pedigree clustering method to cluster the sub-modules from bottom to top.Aiming at the shortcomings of module retrieval and module modification in the process of modular design, this paper studies the existing module retrieval methods and module modification techniques, and proposes a similarity calculation method based on improved extension distance.The existing module instance is reused into the new product development, and the solution model of the contradiction incompatibility problem of extension science is introduced in view of the contradiction between the function requirement and the design structure in the process of product design.The compatibility function of extension module modification is given to judge whether the design objective is compatible with the design condition, and a model of extension module configuration for mechanical products based on the reuse of similar modules is established.Finally, on the basis of the above theoretical research, the system structure of the hydraulic turbine modular design system is established, the main function modules and running flow of the system are analyzed, and the interface development of the hydraulic turbine modular design system is completed.A running example of the system is given.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TH122

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本文編號：1703260