Patent Document ID: 20020032495
Application ID: 09764131
Patent Flag: 0

Claim One:
1. A production management system comprising: a production controller connected online to a plurality of pieces of production apparatus, or a data processing apparatus connected online to an off line management apparatus having a production management function and a simulator; wherein the simulator performs a simulation of physical distribution for a specified period of time through use of a simulation parameter, apparatus information, and process information, which are acquired from the production controller or the offline management apparatus; the simulator performs a re-simulation of physical distribution while taking, as parameters for optimizing physical distribution, time-series data pertaining to the availability factor of each apparatus and the load factor of each apparatus obtained as a result of the simulation, as well as the start and termination times of an event which is to arise in the period of a simulation; and the production controller dynamically changes a dispatch rule set for each apparatus or a group of pieces of apparatus having a same function, thus feeds back the change to control of real physical distribution.