Applying modularity in the designing of products has been extensively researched recently to reduce the delay of product development. This paper presents a methodology of modular-based design in the conceptual stage of systems to support concurrent engineering (CE). First, the functions (Fs) are classified into different types of modules according to the correlation in design by using fuzzy cluster identification. Second, the optimal module type is selected based on the considerations of the manufacture and assembly complexities of the system for progressive parallel design. Third, the design priority of Fs within a module is scheduled by measuring the information content of Fs. As a result, the traditional design process is arranged as a series-parallel action to reduce the design time of products. Finally, an automated guided vehicle (AGV) system is used as an example to describe this method. (C) 1999 Elsevier Science B.V. All rights reserved.
