Hierarchical modelling and control of flexible assembly systems using object-oriented Petri nets

摘要

This paper presents results of the hierarchical modelling of flexible assembly systems (FAS) controlwith object-oriented Petri nets (OPN). Control approaches using coordination architecture, and toolsto perform them are outlined. The paper discusses the hierarchical decomposition of assemblysystems for products families using a generic and polymorphic object approach and the reuse of theseobject libraries to perform step by step the final system model. The use of objects and Petri netsubsystems with more or less autonomy for subsystem behaviour modelling provides a new way ofmanufacturing systems modelling in a CIM architecture, and for assembly systems in particular.