Evaluation Priority of Design Decision Using a Modified Analytical Hierarchy Process and a Knowledge Coding System for a Web Frame Structure

利用修正式層級程序分析法與知識編碼進行橫肋結構設計決策之評估

林榮慶(Zone-Ching Lin) ； 鄭振興(Chen-Hsing Cheng)

《中國機械工程學刊》 31卷1期 (2010/02) Pp. 1-11

https://doi.org/10.29979/JCSME.201002.0001

摘要

快速合理化設計一直是設計者追求的目標，本研究目的在於建立一個用於設計改善之整合方法。本研究提出整合修正式層級程序分析法(AHP)及代理人知識編碼應用於橫肋結構的設計優先次序決策分析，並快速應用所建立的編碼技術，進行橫肋結構的程式模擬分析。本文所提出的修正式AHP法，為先經由蒐集的專利和工程知識文件，計算各層級相關字詞出現次數比值來決定AHP法的權重值，進而結合下一步的層級程序分析法。本文以局部加強等三種技術及支撐結構等三種功能為例，進行重要度評估，提供研發設計之優先順序，以供決策評估參考。本研究並配合重要工程知識及參數，結合代理人技術分層解析，建立橫肋結構之工程知識編碼。其中並依序建立各種邊界條件與負載範圍，以及相關細部參數之編碼。最後選取支撐結構功能作為設計改善案例。這種結合修正式AHP法與透過代理人的編碼系統在知識工程應用上乃屬先例，它可有效提供研發設計決策之優先順序，並迅速獲得良好的設計。

並列摘要

Rational design with rapid speed is always a pursuit goal for a designer. The purpose of this study is to establish a combined method for design improvement. This study proposes a novel method for combining the priorities of design decisions using a modified analytical hierarchy process (AHP) and a knowledge coding system with agents for web frame structure. The modified AHP method considers the weights of each hierarchy by calculating the ratios of number of occurrences of related keywords, which are obtained from patent and engineering documents. Furthermore, this study uses the modified AHP, and takes the three techniques and three functions to determine the importance evaluation. According to the important engineering knowledge and using the technique of agent, the knowledge coding of the web frame structure is carried out. Finally, the supportive structure function is selected as a design case study and validation. After combing the design decision results from the modified AHP with the knowledge coding system, detailed design can be determined using the knowledge coding system for engineering principle and using finite element method for further design improvement. Such a combination of the modified AHP method with the knowledge coding system proposed in this paper is actually unprecedented in the application of knowledge engineering. The acquired results can rapidly provide a priority order of design decisions for a structural design.

並列關鍵字

web frame structure ； analytical hierarchy process ； design decision ； knowledge coding