An Optimal Mixed Integer Program for Schedeling in a Hihg Mix-Low Volume Printed Wiring Board Production Company

Abstract

Finding optimum schedules for High Mix Low Volume, multistage Hybrid Flow Shop (HFS) areas, is regular and hard problem. For these kinds of production areas, there are many specific Mixed Integer Programs in literature. In this thesis, another Mixed Integer Program is demonstrated for a real Printed Wiring Board Production Company with specific features: High Mix Low Volume, multistage production with parallel units, Unlimited Interstate Buffer, Allowed Lot-Splitting, Independent set-up times of each job. Objective Function of the model is minimizing sum of costs of tardy jobs and capacity increment at each stage.