PSI: A Petri net based simulator for flexible manufacturing systems

Petri nets and related specification tools such as the Grafcet are more and more used to express the operation constraints (i.e. the synchronisation mechanisms imposed by the mechanical part of the system), however no Petri net based discrete event simulator was available. ~o PSI, a prototype of such a package, has been realized [V~ in order to complement the comparison of the existing packages by an evaluation of such an approach.