Fuzzy modeling to conceptual design of mechanisms based on axiomatic design

This paper aims to study new effective modeling and reasoning techniques, concept evaluation approaches in conceptual design of mechanisms. First, the axiomatic design (AD), set theory and fuzzy logic are introduced and their relationships are analyzed from the viewpoint of application in conceptual design of mechanisms. Second, the problem space and solution space are formalized based on set theory and AD, which can be regarded as the underlying representation of design knowledge. Then the automated mapping from functional domain to physical domain is proposed. Finally, fuzzy logic based problem formulation and evaluation to reflect the imprecise nature of objectives is presented. The modeling and reasoning technique, concept evaluation approach can improve the efficiency of conceptual design of mechanisms and give new insight to realization of automated conceptual design of mechanisms.