Discrete event system,   Supervisory control,   Petri Net, Constraint   This paper presents a method to manage the time in a manufacturing system for obtaining an optimized model. The system in this paper is modeled by the timed Petri net and the optimization is performed based on the structural properties of Petri nets. In a system there are some states which are called forbidden states an...

Memory subsystems often turn out to be the main performance bottleneck in current computer systems. Nevertheless, the architectural features of common RAM chips are not utilized to their limits. Therefore, a complex Petri Net model of a memory subsystem was developed and investigated to explore possible improvements. This paper reports the results of a case study in which widely used synchronou...

Event-condition-action rules, in active database systems, should be performed carefully, because their firings can produce inconsistent states in database systems. In this paper, an ECA rule base simulator is described, named ECAPNSim, which uses a Conditional Colored Petri Net model to depict ECA rules. It can model ECA rules, simulate their behavior, and perform a static analysis.

* Corresponding author ABSTRACT Traditional workflow models have obvious shortcomings in describing complex workflows. Such complexity is due not only to the hierarchical property of business process, but also to the complicated dependencies among tasks. In this paper, we first introduce a conceptual task model based on UML class graph. Then we apply colored Petri nets to model task interfaces ...

Colored Petri nets (CPNs) have been widely used as a mathematical modeling tool of dynamical systems , both for control and simulation. CPNs are very appealing and appear uncomplicated because of their simple graphical representation. However, as the CPN definition is very concise, specific processes have to be modeled with appropriate modules that sometimes are not easy to conceive. To broaden...

In a multi-agent system (MAS), agent interactions are established through exchanging messages following interaction protocols. Most current agent interaction protocols are hard-coded within agents during the agent designing, and this feature greatly reduces the flexibility of the agent interactions. In this paper, we present a Colored Petri Nets (CPNs) based approach to form flexible interactio...

Basic components of Provider Backbone Bridge (PBB) network models were constructed: PBB interior switch, PBB edge switch—with the dynamic filling up of address tables. The modeling of PBB networks was implemented. The results of simulation reveal definite imperfections of PBB technology caused by the broadcasting and sensitivity to the ageing time of the address tables’ records, which complicat...

This paper presents the problem definition and the related research activities on the modeling, simulation, design and implementation of an automatic material handling system in a batch production environment. The colored and timed Petri nets are used to model and sirnulate the automatic material handling system. The Petri net modeling and simulation enable the detemiination of the des@ paramet...