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Research Papers

A Method for Function Dividing in Conceptual Design by Focusing on Linguistic Hierarchal Relations

[+] Author and Article Information
Eiko Yamamoto1

Department of Mechanical Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japaneiko@mech.kobe-u.ac.jp

Toshiharu Taura, Shota Ohashi, Masaki Yamamoto

Department of Mechanical Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan

1

Corresponding author.

J. Comput. Inf. Sci. Eng 10(3), 031004 (Aug 31, 2010) (8 pages) doi:10.1115/1.3467008 History: Received June 29, 2009; Revised May 27, 2010; Published August 31, 2010; Online August 31, 2010

In this study, we attempted to develop a method that applies the notion and technology of natural language processing for operating a function dividing process in conceptual design. We formulated a function dividing process from a linguistic viewpoint and constructed linguistic hierarchal structures in this process. This method is significant in identifying hierarchal relationships between the upper- and lower-level functions from the viewpoint of linguistic hierarchal relations. An experiment was carried out to confirm whether the proposed methods were feasible and whether the extracted relations were meaningful for supporting the function dividing process.

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Figures

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Figure 1

Function hierarchy from the viewpoint of the linguistic hierarchy

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Figure 2

Image of a function dividing process

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Figure 3

Example of movement decomposition

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Figure 6

Example of causal-connection-based dividing

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Figure 7

Relationship between the function dividing processes and function operating types

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Figure 8

Function hierarchy for a dishwasher whose function is divided using function operating types

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Figure 9

Function hierarchy obtained for air conditioner by using the constructed thesaurus

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Figure 5

Example of decomposition-based dividing

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Figure 4

Example of structure replacement

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