Memoirs of the Faculty of Engineering, Okayama University
Published by Faculty of Enginerring, Okayama University

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Memoirs of the School of Engineering, Okayama University

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A Study on the Planning and Scheduling of Production System Considering Demand Changes

Ohtani, Ryuji Department of Electrical and Electronic Engineering, Okayama University
Konishi, Masami Department of Electrical and Electronic Engineering, Okayama University
Imai, Jun Department of Electrical and Electronic Engineering, Okayama University
Nishi, Tatsushi Department of Electrical and Electronic Engineering, Okayama University
抄録
In this paper, we studied a planning and scheduling of production system considering demand changes. In the proposed system, planning part determines lot-size and amount of jobs in production. On the other hand, scheduling part determines the production sequence of jobs. In order to treat with the demand changes, both planning and scheduling should work well simultaneously. In the proposed system, preset and real time production control system is newly constructed from the view point of adaptive control. In the system, production planning is modified when the difference between production amount and demand becomes large. Moreover, production schedule is regenerated when the determined schedule is deviated from the prospected one. The scheduling system is characterized as the autonomous decentralized optimization system where each job works as agent and agent searches its appropriate starting time of processing. The effectiveness of the proposed system is confirmed by numerical examples.
ISSN
0475-0071
NCID
AA10699856