An integrated wafer fab production scheduling and simulation system incorporates
a manufacturing execution system with a scheduling system based on simulation.
The integrated system provides manufacturers with a simulation tool integrated
with the manufacturing execution system to evaluate proposed production control
logic as a practical alternative to expensive experimentation on an actual production
system. Furthermore, simulation models are used to create short-term dispatch schedules
to steer daily manufacturing operations towards planned performance goals. Innovative
features include integration of preventive maintenance scheduling, Kanban based
WIP control, an integrated time standard database, and real time lot move updates.
