PETRI NET BASED APPROACHES TO MANUFACTURING SYSTEMS

Abstract

This paper describes the planning in manufacturing systems. The skeleton and the functionality of a Petri Net Toolbox, embedded in the Matlab environment, are briefly presented, as offering a collection of instruments devoted to simulation, analysis and synthesis of discrete event systems. Timed Petri Nets are used to model operational and routing in production systems. A generalized multi productive machine modules is defined, adapter to system feature, repeated and connected to compose the TPN models of production systems with different levels of routing and operation. The present paper approaches the stochastic medium considered to be fundamental in describing the changes and the aleatory variations during the desertion process of machines and blocking times in the processing activity. We intend to present a simulated model according to which we can establish the time variation and the outputs process in a simple production system.Petri Nets, discrete event, manufacturing systems