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Multi-site Scheduling with Fuzzy Concepts Jrgen Sauer, Gerd Suelmann, and Hans-Jrgen Appelrath

Summary: Multi-site Scheduling with Fuzzy Concepts
Jürgen Sauer, Gerd Suelmann, and Hans-Jürgen Appelrath
University of Oldenburg, Dept. of Computer Science
Escherweg 2, D-26121 Oldenburg
e-mail: sauer@informatik.uni-oldenburg.de
The objective of multi-site scheduling is to support the scheduling activities of a global
scheduler and schedulers in distributed production plants in a cooperative way. A global
schedule generated on a global level must be translated into detailed schedules as part of the
local scheduling process. In case of disturbance, feedback between the local and global levels
is essential. Global level data are normally aggregated, imprecise, or estimated. Previous
methods focused on local production sites, in most cases without coordination. In this work
we present an approach that considers the adequate modeling and processing of imprecise
data for global level scheduling within a multi-site scheduling system based on fuzzy
concepts. One of the goals is to create a robust prescription for the local scheduling systems
which helps to reduce the effort of coordination and rescheduling.
Keywords: multi-site scheduling, knowledge-based systems, fuzzy systems
1 Introduction
Scheduling integrates different tasks of production planning and control (PPC) systems to


Source: Appelrath, Hans-Jürgen - Department für Informatik, Carl von Ossietzky Universität Oldenburg


Collections: Computer Technologies and Information Sciences