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Dynamic load balancing of cycle shops based on correlation functions
Publikationstyp
Conference Paper
Date Issued
2007
Sprache
English
First published in
Lecture Notes in Engineering and Computer Science
Number in series
Volume
2
Start Page
1522
End Page
1527
Citation
International MultiConference of Engineers and Computer Scientists, IMECS 2007 : Hong Kong, March 21 - 23, 2007. - Vol. 2 (2007). - Seite 1522-1527
Contribution to Conference
Scopus ID
Publisher
IAENG
ISBN
978-988-98671-7-1
The following simple but fundamental theorem exists in production planning and design: Balanced work stations result in balanced work cells and finally lead to balanced factory operation. However, this theorem is only true in the absence of cycle resources or routing loops. Loops of the product flow may cause unbalanced behaviour for the cell in an unforeseeable or at least complex way. Balancing a cycle shop, therefore, needs a hierarchical approach: First, create a balanced rough-cut schedule for processes per work cell based on the work cell throughput diagram; second, create a detailed schedule for operations per cycle resource based on resource Gantt charts; and third, integrate both schedules in such a way as to optimize shop performance and to avoid collisions among processes and operations. In our approach, all three steps are supported by a process model called collision functions which originate in correlation theory. By this unified representation, job scheduling, resource allocation and process coordination are integrated in a convincing way. The optimisation method is applicable to flow, job and cycle shops both for stationary and dynamic schedules.
Subjects
Automation Systems
Correlation Scheduling
Modelling and Simulation
Production planning
Resource planning
DDC Class
620.1: Engineering Mechanics and Materials Science