Author_Institution :
CAD/CAM Res. Center, Northwestern Polytech. Univ., Xian, China
Abstract :
Nowadays, fuzzy technology and intelligent computer aided design (ICAD) are two focuses in the artificial intelligence domain. In fuzzy technology, many directions are being researched, such as: fuzzy set theory, fuzzy systems, fuzzy operator, membership functions acquisition method, fuzzy optimization, fuzzy decision, fuzzy control, fuzzy knowledge acquisition and representation, fuzzy database system, fuzzy inference algorithm, fuzzy rules extraction, fuzzy knowledge based systems, fuzzy expert system, and so on. But it is seldom used in engineering design CAD systems, especially in product conceptual design. Fuzziness exists widely in product design, such as fuzziness in design data, in design decision, in design computing model etc. But particularly in product conceptual design, the fuzziness is more remarkable. The primary aim of the article is to combine fuzzy technology with CAD technology to elaborate the advantages of each of them. The paper discusses the influence and disposal methods of the fuzziness and uncertainty in the product design, and gives a model of knowledge based fuzzy CAD systems and examples about aircraft preliminary configuration design
Keywords :
design engineering; fuzzy set theory; inference mechanisms; intelligent design assistants; uncertainty handling; CAD technology; aircraft preliminary configuration design; artificial intelligence domain; engineering design CAD systems; fuzziness; fuzzy technology; intelligent CAD; intelligent computer aided design; knowledge based fuzzy CAD systems; product conceptual design; uncertainty; Artificial intelligence; Database systems; Design automation; Fuzzy control; Fuzzy set theory; Fuzzy systems; Hybrid intelligent systems; Knowledge acquisition; Optimization methods; Product design;
