在船舶機艙設計作業中，風管、電纜與管路管線佈置設計皆是繁雜且須各設計人員相互協調配合之團隊作業。然而針對船舶機艙通風管路佈置設計，國內一般船廠仍以經驗輔佐的傳統設計方法在進行此項設計。有鑑於此，本文嘗試在船舶基本設計階段導入以文件為基礎之規則式知識工程架構，提出一個可以直接在三維環境中進行機艙通風系統的知識工程設計程序，並運用自動化的管路佈置系統作為規則檢驗之資訊來源及結果呈現之平台。文中使用三維電腦輔助設計軟體PDMS，先以 PML語言建置一個三維風管自動佈置環境，進而導入知識工程建立一個可擴充式的佈管規則知識庫系統，再運用各種佈管知識，妥善的佈置風管路徑並解決各種不合理的佈置情形，最後再將設計結果以三維幾何模型呈現於PDMS平台上。
本文提出的船舶三維風管自動化設計程序，其設計資訊與船舶資料庫在於同一平台，因此當完成設計即可提供後續船舶設計的相關生產資訊，以減少後續設計的協調時間與重工，有助於提升下游設計者之工作效率。再者還可以將船廠累積之機艙通風設計經驗，轉換成可運用的風管設計規則之外，進而提升造船廠之通風系統設計能力。

Design work in the engine room, the air duct, cable and pipeline layout design are both complex and requires coordination between the designers work with the team. Yet the domestic shipyards still assist the design work with the traditional ways like experience provided by engineers while arranging the ventilation system in ship engine room. For this reason, this research tends to construct an auto-routing ship ventilation system that all environment restricted conditions are taken into consideration at the initial design stage of ship engine room ventilation arrangement, so we propose a design method that is able to build the round pipe components in the 3D environment where we refer the PDMS and its assisting PML programming language. Moreover, we apply the knowledge-based engineering (KBE) concept to the design flow and build up an extensible rule-based KBE system for shipyards. The system is able to deduce through the pipe arrangement process and solve some irrational planning on the basis of the rules in the knowledge base and display the design results on the PDMS platform as the 3D geometric models.
The superiority of this research is to propose an auto-routing and auto-modeling form according to the specialty of PDMS, which is able to reduce the complexity of 3D geometric model design and the error rate due to the manual operation. The whole ventilation arrangement of ship engine room completes in the PDMS interface, that means the following production design procedures like drawing data and construction graphs can be accessed through PDMS data base directly, however, both 2D and 3D illustrations are stored in the same data base which insures the convenience and correctness at the same time. Furthermore, this research applies the rule-based KBE system concept that creates XML-based rules basing on the accumulated design experiences and formulas to the ventilation design and arrangement to achieve the collaboration work of later design stages. In other words, the ventilation system is able to use the knowledge from the engineers to solve the design problems while planning the ventilation system in ship.

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