Production resources planning based on net models

The application of simulation models based on Petri nets for resource planning systems is considered. A formalized procedure for the formation of an inverse Petri net for a class of net-processes (Workflow nets) has been developed. Formal rules for inverse simulation are presented in this paper. A mechanism of material needs planning has been proposed. It’s based on an inverse Petri net and inverse simulation. The issues of using some traditional optimization techniques in the implementation of reverse network simulation, in particular, the application of the rules of the priority of operations are considered. Some of the most typical formulations of the problem of optimal resource allocation have been determined, for which the approach proposed in the article provides a fast and fairly accurate solution for practical use. An example of solving the problem of planning resource requirements for a site of a typical medium-series machine-building enterprise is given and the features of the practical use of the proposed approach are revealed. The structure of the considered production system is quite typical for machine-building production, which makes it possible to predict the positive effect of the approach and is the basis for its replication in such systems.