Controlling a Re-entrant Manufacturing Line via the Push–Pull Point

Dominique Perdaen, Dieter Armbruster (), Karl G. Kempf () and Erjen Lefeber ()
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Dominique Perdaen: Eindhoven University of Technology
Dieter Armbruster: Arizona State University
Karl G. Kempf: Intel Corporation
Erjen Lefeber: Arizona State University

A chapter in Decision Policies for Production Networks, 2012, pp 103-117 from Springer

Abstract: Abstract A reduced model of a re-entrant semiconductor factory exhibiting all the important features is simulated, applying a push dispatch policy at the beginning of the line and a pull dispatch policy at the end of the line. A commonly used dispatching policy that deals with short-term fluctuations in demand involves moving the transition point between both policies, the push–pull point (PPP) around. It is shown that with a mean demand starts policy, moving the PPP by itself does not improve the performance of the production line significantly over policies that use a pure push or a pure pull dispatch policy, or a CONWIP starts policy with pure pull dispatch policy. However, when the PPP control is coupled with a CONWIP starts policy, then for high demand with high variance, the improvement becomes approximately a factor of 4. The unexpected success of a PPP policy with CONWIP is explained using concepts from fluid dynamics that predict that this policy will not work for perishable demand. The prediction is verified through additional simulations.

Keywords: Re-entrant production; CONWIP; Dispatch policy (search for similar items in EconPapers)
Date: 2012
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DOI: 10.1007/978-0-85729-644-3_5

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