本文選題：維修性 + CATIA　； 參考：《燕山大學(xué)》2013年碩士論文

【摘要】：維修性核查是機械產(chǎn)品設(shè)計過程中的重要環(huán)節(jié)。核查的目的是確保機械系統(tǒng)內(nèi)各零部件均具有良好的可維修性。目前，核查工作通常由機械產(chǎn)品的總設(shè)計單位組織技術(shù)人員，對電子樣機進行人工估計的方法來實施。在核查過程中，核查人員主要靠經(jīng)驗來確定機械系統(tǒng)中各零部件的可維修性。當(dāng)機械系統(tǒng)精密而復(fù)雜時，不但對核查人員的經(jīng)驗豐富程度要有很高的要求，更需要較長的工作周期。這樣，核查的準(zhǔn)確度難以控制，而且核查效率也很低。 為了提高核查準(zhǔn)確度及效率，本文對采用基于虛擬現(xiàn)實技術(shù)的機械系統(tǒng)電子樣機維修性核查方法進行了探索性的研究。本文以基于CATIA電子樣機設(shè)計平臺的電子樣機為例，以VisualBasic語言作為CAITA平臺的二次開發(fā)語言，對電子樣機的視覺可達、空間可達以及零部件拆卸路徑規(guī)劃進行了研究。 采用在視覺觀察點和被核查零件輪廓點之間構(gòu)建虛擬光線的方法，對被核查零部件是否可視以及可視面積計算方法進行了研究；根據(jù)CATIA平臺下虛擬人的運動及碰撞檢測特征，研究了一種新的、具有較高效率的虛擬人手臂姿態(tài)控制方法來解決機械零部件的空間可達性核查問題；根據(jù)快速擴展隨機樹算法的特點以及本課題的研究內(nèi)容，對快速擴展隨機樹方法進行改進，，并應(yīng)用該方法來解決電子樣機內(nèi)零部件拆卸路徑規(guī)劃問題。最后，通過對機械產(chǎn)品電子樣機的分析實驗來驗證本文所研究方法的有效性。
[Abstract]:Maintainability verification is an important link in the process of mechanical product design. The purpose of verification is to ensure that all parts in the mechanical system have good maintainability. At present, the verification work is usually carried out by the technical personnel organized by the general design unit of the mechanical product, and the manual estimation of the electronic prototype is carried out. In the verification process, the inspectors mainly rely on experience to determine the maintainability of each component in the mechanical system. When the mechanical system is precise and complex, it not only requires a high degree of experience for the inspectors, but also requires a long working cycle. In this way, the accuracy of verification is difficult to control, and the efficiency of verification is very low. In order to improve the accuracy and efficiency of verification, the maintainability verification method of mechanical system electronic prototype based on virtual reality technology is studied in this paper. Taking the electronic prototype based on CATIA electronic prototype as an example and VisualBasic as the secondary development language of CAITA platform, the visual accessibility, spatial accessibility and disassembly path planning of electronic prototype are studied in this paper. The method of constructing virtual light between the visual observation point and the contours of the verified parts is used to study the visual and visual area calculation method of the verified parts, according to the motion and collision detection features of the virtual human under the CATIA platform. In this paper, a new and efficient attitude control method for virtual human arm is studied to solve the problem of spatial reachability verification of mechanical parts, according to the characteristics of fast extended random tree algorithm and the research content of this subject. The fast extended random tree method is improved and applied to solve the problem of disassembly path planning in electronic prototype. Finally, the effectiveness of the proposed method is verified by the analysis of the electronic prototype of mechanical products.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP391.9;TH12

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