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Real-time production control for low volume and high product mix manufacturing lot prioritizing algorithm based on factors of lateness and importance

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1 Author(s)
Nagano, S. ; Sony Kokubu Corp., Kokubu, Japan

A new production control system based on lateness and importance is proposed here, particularly suitable for such a complex manufacturing system as producing a wide variety of types of products. This system determines the production priority of each lot in relation to other lots at each processing stage, based upon the critical ratio d/D, where “d” is the difference between the actual and scheduled dates for a particular stage of processing a particular lot and “D” is the time still needed to complete the production of the lot. This system facilitates management of all product flow in our real-time operating system. The average cycle time is improved by 20%

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Semiconductor Manufacturing Conference Proceedings, 1999 IEEE International Symposium on

Date of Conference: