Hybrid Petri nets-based Flow modeling and application on hybrid system.

Abstract

Flow management is necessary in several application areas, in the optimization of industrial production lines, in IT to manage data flows and in the automation of industrial systems. Physical systems in general consist of continuous processes interacting with discrete processes forming a hybrid dynamic system constituted by continuous dynamic type models and discrete events. The application of the hybrid Petri nets tool in the modeling, study and performance evaluation of these systems helps to analyze the dynamic properties by acting on the parameters and the structure of the models in order to evaluate their behavior. This work is focused on the application of this tool to model a material flow management system between a rotary kiln and a clinker cooler in a production line (cement process). The implementation of the modeling and the analysis of the results obtained by simulation on a software platform (Visual Object Net ++), aims to study industrial processes with mathematical tools and to follow their behavior on software, this allows us an optimal analysis of complex systems in dangerous environments, and to try practical and effective solutions by simple means before moving on to the implementation and programming of actions that require more expensive means.

Modeling and simulation of the two-tank system within a hybrid framework

“…While the system is in a certain discrete state, these continuous variables evolve according to differential equations called flows [2]; ii) approach consists of taking discrete formalisms, such as finite automata and Petri nets, and extending them by continuous variables which evolve according to differential equations associated with discrete states. Resulting frameworks of this kind are timed automata [3] or hybrid Petri nets [4]; and iii) an approach that directly combines the continuous with its discrete variables through an interface was introduced by Int J Elec & Comp Eng ISSN: 2088-8708  Bemporad and Morari [5]. This approach describes a discrete-time hybrid system.…”

A Design and Implementation of a New Control Based on Petri Nets for Three Phase PWM-Rectifier

“…PNs have been widely used as a tool for the investigation and modelling of hybrid systems. Among the works discussed, it should be noted that the continuous PN, a hybrid of ordinary and continuous PNs, differential PNs, batch PN, a colored version of the batch PNs, and high-level hybrid PNs are all extensions of the continuous PNs (Sayah & Chenafa, 2021). Applications for PN include modelling and analysis of power systems and industrial processes.…”