Journal of Engineering, Project, and Production Management, 2014, 4(2), 114-123
Finite Capacity Scheduling of Make-Pack Production: Case Study of Adhesive Factory
1Master of Engineering Student, Logistics and Supply Chain Systems Engineering Program, School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat University, Pathum-Thani, 12121, Thailand. Email: theppakarn.chotpradit@studentmail.siit.tu.ac.th
2Associate Professor, Logistics and Supply Chain Systems Engineering Program, School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat University, Pathum-Thani, 12121, Thailand. Email: pisal@siit.tu.ac.th (corresponding author).
Production Management
Received January 27, 2014; revision April 10, 2014; accepted April 13, 2014
Available online May 22, 2014
Abstract: This paper developed a Finite Capacity Scheduling (FCS) system for make-pack production based on a real case of an adhesive factory. The FCS determines production quantity of each machine to conform with resource capacities and due date of customer orders while minimizes related total cost. The total cost includes total production, inventory, and cleaning cost. A Mixed Integer Linear Programming (MILP) model is formulated and solved by LINGO software. The computational time is very long since the model has a lot of integer variables. Thus, the model is solved for a reasonable time and the best but not optimal solution is reported with the lower bound. This paper tries fixed horizon and rolling horizon scheduling methods. The fixed horizon plans for an entire horizon of 30 days. The rolling horizon plans for a sub-horizon of 10, 15, and 17 days. An overlapping of sub-horizons is applied to reduce end-of-horizon effect. Three scenarios (high, normal, and low) of demands are considered. The fixed horizon method is applied first to all scenarios of demand. If the best solution is far away from the lower bound, the rolling horizon method is applied. The results indicated that the rolling horizon method may significantly reduce the total cost with the same computational time. Moreover, the rolling horizon method is more applicable for a dynamic situation where customers frequently change orders. The proposed MILP model can generate reasonable solutions and they are useful for scheduling decision of make-pack production.
Keywords: Make-pack, FCS, finite capacity scheduling, MILP, rolling horizon, scheduling optimization.
Copyright © Journal of Engineering, Project, and Production Management (EPPM-Journal).
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 Unported License.
Requests for reprints and permissions at eppm.journal@gmail.com.
Citation: Chotpradit, T. and Yenradee, P. (2014). Finite Capacity Scheduling of Make-Pack Production: Case Study of Adhesive Factory. Journal of Engineering, Project, and Production Management, 4(2), 114-123.
DOI: 10.32738/JEPPM.201407.0006
Full text
