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題名 | 遺傳演算法在船體結構施工程序最適化之應用=The Optimization of Working Process for Ship Structure by Genetic Algorithms |
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作者 | 翁維珠; 洪振發; Weng, W. C.; Hung, C. F.; |
期刊 | 中國造船暨輪機工程學刊 |
出版日期 | 19990800 |
卷期 | 18:3 1999.08[民88.08] |
頁次 | 頁53-62 |
分類號 | 444 |
語文 | chi |
關鍵詞 | 遺傳演算法; 路徑最適化; 船殼製造; Genetic algorithms; Working route optimization; Hull construction; |
中文摘要 | 在複雜的船段製造時需要多人同時工作,其配工方式常由領班以等區域簡單劃分 每人工作區間再依經驗調整工作負荷,不易提升整體疾率。本文嘗試將施工船段依縱、橫 向肋骨劃分成許多施工單元,引用Okumotor建議之施工移動法則,建立施工路徑或施工程 序模型,以少數移動決策指標為設計變數,並以遺傳演算法來搜尋最佳工作路徑,使得施 工人員閒置比降至最低,達到最高工作效率之目的。最後,以一包含6縱向與21橫向大肋骨 之船段為研究例,以隨機變數產生4種工時分佈狀況,進行搜尋最佳施工路徑,其結果與理 想狀況頗接近。 |
英文摘要 | In many cases of construction of complex ship structures, it needs many people to work simultaneously. Generally, the works are arranged following the concept of equal working zones, and then adjusted by human experience if the work loading for each worker has remarkable difference. This kind of approach is not easy to achieve a high overall working efficiency for the construction of the ship block. In this paper, we divide the ship block into work cells according to the longitudinal and transverse frames. The moving algorithm to finish the ship block is adopted from Okumoto to set up a working model in which the moving decision indices are defined as design variables. The genetic algorithm is adopted to search the optimal moving decision indices in order to find the optimal working route. An idle rate is proposed as the criterion of working efficiency and the penalty method is used to ensure that the ship block will be finished completely. Finally, a ship block containing 6 longitudinal and 21 transverse frames is selected as an example. The optimal working routes for four cases of working time distribution generated randomly for the studying problem is carried out. The results show that the found routes are very close to the ideal condition. |
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