Petri nets for manufacturing information systems

The information system is a central component of any manufacturing system in the sense that it provides support to its two other fundamental subsystems: the physical system (or operational system, i.e. where the physical actions take place using enterprise resources) and the decision system (i.e. where strategic and tactical decisions are made). The relationships among these three subsystems are illustrated by Fig. 5.1. While discussions of the previous chapters of the book are mainly concerned with modeling and analysis of the decision and physical systems of manufacturing, this chapter focuses more on the information system of a manufacturing enterprise.