The Modeling Analysis of Manufacturing Execution System Based Upon Colored Petri Nets

Manufacturing execution system (MES) is a system towards the level of workshop management.And this workshop management is between the arranged management system on the upper level and industrial control on the lower level. The workshops, acting as the manufacturing center of the enterprises, are not only the executors of production tasks, but also the feed backers of production information. So the administration of workshops, management logistics, and information integration on the level of workshops are very important in the industrial information integration. MES is a complex DEDS (discrete event dynamic system), which has many random factors and unstructured problems in it. Therefore it can not be depicted by accurate formalization methods. Petri nets is the graphic modeling tool, and it can precisely describe the relation of the events such as sequence, concurrent, synchronization, etc.In this paper we use this method to simulate and analyze DEDS. Colored petri nets is a high level net system which is suitable for modeling DEDS. It can greatly reduce the complexity of system modeling and analyzins, so the problems of model can be settled.