ENERJİ-ETKİN ESNEK ATÖLYE TİPİ MAKİNE ÇİZELGELEME PROBLEMİ İÇİN ÇOK AMAÇLI BİR MATEMATİKSEL MODEL

Year 2021, Volume: 29 Issue: 1, 77 - 85, 30.04.2021

Emine Akyol Özer , Sevcan Dincer Hüseyin Tamer

https://doi.org/10.31796/ogummf.763363

Abstract

Bu çalışmada, bir conta fabrikasındaki yeniden dolaşım ve makine uygunluk gibi sürece özgü kısıtların bulunduğu bir esnek atölye tipi çizelgeleme problemi ele alınmıştır. Klasik makine çizelgeleme problemlerinde son işin tamamlanma zamanı, ağırlıklı tamamlanma zamanı, toplam gecikme gibi verimliliği veya maliyeti enküçükleyecek amaçlar ele alınmaktadır. Son yıllarda ise, sürdürülebilir üretim süreçlerinin önem kazanmasıyla bu amaçlara ek olarak, enerji odaklı amaç fonksiyonları gündeme gelmiştir. Bu çalışmada, klasik çoğu çizelgeleme problemlerinden farklı olarak, toplam enerji tüketimini ve toplam ağırlıklı tamamlanma zamanını enküçükleyecek çok amaçlı bir matematiksel model geliştirilmiştir. Bu modelin performansı, GAMS/Cplex çözücüsünde küçük boyutlu test problemleri ve fabrikadaki gerçek hayat problemleri kullanılarak test edilmiştir. Elde edilen sonuçlar tartışılmıştır.

Keywords

Enerji Etkin Çizelgeleme, Esnek Atölye Tipi Makine Çizelgeleme, Yeniden Dolaşım, Makine Uygunluk Kısıtları, Toplam Ağırlıklı Tamamlanma Zamanı

A BI-OBJECTIVE MATHEMATICAL MODEL FOR ENERGY-EFFICIENT FLEXIBLE JOB SHOP MACHINE SCHEDULING PROBLEM

Abstract

In this study, a flexible job shop scheduling problem with particular constraints such as recirculation and machine suitability in a gasket factory is discussed. In classical machine scheduling problems, the objectives that minimize productivity or cost such as completion time, weighted completion time, total delay are addressed. In recent years, in addition to these objectives, energy-oriented objective functions have become critical with the increasing importance of sustainable production processes. In this study, unlike most classical scheduling problems, a multi-objective mathematical model is developed to minimize total energy consumption and total weighted completion time. The performance of this model has been tested using small-scale test problems and real-life problems from the factory in the GAMS/Cplex solver. The obtained results are discussed

Keywords

Energy Efficient Scheduling, Flexible Job Shop Scheduling, Recirculation, Machine Eligibility Restrictions, Total weighted completion time

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