Research on parameter transferring complexity of assembly variant design

Variant design is an effective mean to derive individual product rapidly. This paper focuses on the parameter transferring issue of assembly variant design, that is, to identify a parameter transferring path with minimum uncertainty. Parameter constraint network and uncertainty characteristic were presented. A measure of undefined parameter information was employed to describe the complexity of identifying a parameter value during variant design. Based on this, a modified path complexity of parameter transferring was formulated. By calculating path complexity of each potential transferring process, the parameter transferring path with minimum path complexity can be found. This analysis is convenient to make full use of customized information to design individual product so as to increase the rationality and efficiency of parameter valued. We illustrate our approach with examples.