Analysis of the planning and scheduling functionality in APS systems
Kenn Steger-Jensen, Hans‐Henrik Hvolby · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2001
The paper discusses the basic functionality of planning and scheduling in Advanced Planning and Scheduling systems (APS). Three basic planning options - unconstrained planning, constrained planning and optimization are analyzed by use of theory and examples based on test of an APS system. Even though the planning functionality are radically improved compared to MRP and MRP II, the balance between the objectives are found to be too rigid. This conclusion is based on a number of examples, comparing the outcome of different objectives such as constraints based planning versus optimized planning.