A Product Design Process Modeling Methodology Based on Petri Net

In order to realize process modeling and management in the product design, a business process modeling methodology is put forward based on Petri net. In this paper, we merge place node and transition node in Petri net, and reserve token element only by analyzing execution mechanism and dispatching principle of Petri net. In parallel design process instances, a sub-token is introduced, which avoids design process execution conflicts. The definition, dispatching model, and execution mechanism of product design process based on Petri net are discussed respectively. In the prototype implementation section, we developed a Web-based product design process modeling and management system. The system application verifies effectiveness and feasibility of the modeling method.