ANALYSIS OF A COMPLEX MANUFACTURING SYSTEM MODELED WITH PETRI NETS

Abstract

The paper presents an example of monitoring and control for a complex manufacturing system modeled with Petri nets. It also proposes a method to monitoring and control in case of some repairs, or the maintenance according to the technical book of machines that are part of manufacturing process analyzed. The method uses a classical complex manufacturing model simulated with Petri network based on specifications, and implements the hierarchical and distributed control of the manufacturing chosen system. The paper is structured in two stages. First, the activities are analyzed in a conceptual level, and are defined by a Petri network model, having as support the contract documents, corresponding to manufacturing process. The second stage is dedicated to the procedure for carrying technological flow with the analysis of equipments that are involved in flux, without major losses occur. The study is appropriate for hierarchical and distributed control systems. The method can be extended to complex automated systems.