Abstract: A material flow control device for controlling flows of a plurality of work species within a production system measures the two-stage engagement amounts and the output amounts of respective work species in respective controlled units, and calculates the evaluation values for respective work species in the respective controlled units as a function of: the difference (or the ratio) of the measured engagement amount and a reference engagement amount; and the difference (or the ratio) of the measured output amount and the reference output amount. The order of dispensation from the upstream controlled units are determined in accordance with the priority determined by the evaluation values for the respective work species.

Abstract: In a generating device for a production system simulator according to the present invention, interactive parameter input using graphic symbols is made possible by a production system model input section, and also the automatic creation of the production system simulator is made possible by a simulator generating section, so that even those people who know nothing about a general purpose simulation language are able to perform the generating work of the production system suimulator effectively in a short time. Furthermore, since the production system simulator which is automatically generated is written in the general purpose simulation language and is editable, an expert in simulation can generate a higher grade production system simulator in a short time by adding a function or functions to meet characteristics inherent in each production system besides the fundamental simulator functions generated by the present device.