A Graphical Petri Nets Simulator - Rochester Institute of Technology

1. Introduction and Background
Real systems are too complex to be fully
understood. Even small
systems will eventually exhibit an enormous complexity when examined in
sufficient detail. Therefore, the design, implementation,
complex systems have become serious problems,
and maintenance of
and the subject of much
research and experimentation^]. Petri Net is a modeling tool developed by
focusing only on a small part and ignoring the majority
master the complexity and to "understand"
of the system to
the system. This modeling tools
can be used to model the real systems or develop a new one. By studying the
models rather than the real system, the cost, inconvenience,
manipulating
1.1 Introduction
the real system can be avoided.
or danger of
Petri Nets, introduced by Carl Adam Petri in his thesis[13], have a
simple graphical representation, widely elaborated theoretical background,
and excellent ability to represent synchronous and asynchronous events. Both
the structure and the behavior of a system can be described with the same
graphical notations[9].
The properties, concept, and techniques of Petri Nets are
being developed in a search for natural, simple, and powerful
methods for describing and analyzing the flow of information
and control in systems. The major use of Petri Nets has been
the modeling of systems of events in which it is possible for
some events to occur concurrently, but there are constraints
on the concurrence, precedence, or frequency of these
occurrences[5].
Petri Nets have been used as a powerful modeling tool in modeling real
systems especially on those systems that may
concurrent activities.
3-
exhibit asynchronous and