Modeling in Mixed-Model Assembly Lines Based on Object-Oriented Petri Net

In order to model clearly in mixed-model assembly lines, this paper proposes an Object-oriented Petri Net (OOPN) approach by combining object-oriented concept with Petri net theory. Firstly, the mathematical definition of OOPN was given. Secondly, taking automobile transmission mixed-model assembly lines as an example, the modeling through three different levels of assembly cells, assembly resources and the whole system was finished, and the message delivery mechanism and system behavior were then described in detail. Finally, the case study shows that OOPN can deal well with the complexity of modeling, and it lays the foundation of further analysis and property verification in the mixed-model assembly lines.