Maintenance of flexible manufacturing systems using petri nets modeling

Abstract

This Paper presents a production manufacturing system model based on Petri Nets. In this work we are interested to studying the performance evaluation of the flexible manufacturing system (FMS) using Petri nets which are a powerful tool in modeling production systems. The studied model is a real production system from (Berlad URB groupe-Romania). The FMS type where we have considered various ratios to job to increase the complexity, like shared machines. The performance analysis of this FMS is based on these parameters scheduling routings, machines availability and insufficiency. The Petri net reacts to detected errors by changing the control flow of tokens in the Petri net during the operation of the system. The modeling and simulation allow to determine the FMS productivity, these parameters are important for the political choice strategy of reparation (maintenance) by switching defective machines with similar machines in the same system. We show the flexibility and simplicity of our modeling approach. A case study of a manufacturing system is presented, the obtained results of simulation allows us to identify the best scheduling in the considered case, this scheduling will provide an optimal objective between production and maintenance of the manufacturing system