Zusammenfassung
Es wird ein heuristisches Verfahren zur Lösung des mehrstufigen Mehrprodukt-Losgrößenproblems für generelle Erzeugnis- und Prozeßstrukturen unter Beachtung multipler Ressourcen bei deterministisch schwankenden, dynamischen Bedarfen vorgestellt. Dabei werden auch Rüstzeiten berücksichtigt. Das mehrstufige Mehrprodukt-Losgrößenproblem wird mit Hilfe der Lagrange-Relaxation in mehrere unkapazitierte Einprodukt-Losgrößenprobleme überführt, aus deren Lösungen eine untere Schranke des optimalen Zielfunktionswerts abgeleitet wird. Zur Bestimmung einer oberen Schranke wird ein heuristisches Verfahren eingesetzt. Die Güte des Verfahrens wird anhand mehrerer Problemgruppen mit unterschiedlichen Größenordnungen überprüft.
Summary
In this paper a heuristic approach for the dynamic multi-level multi-item lotsizing problem in general product structures with multiple constrained resources and setup times is proposed. With the help of Lagrangean relaxation the capacitated multi-level lotsizing problem is decomposed into several uncapacitated single-item lotsizing problems. From the solutions of these single-item problems lower bounds on the minimal objective value are derived. Upper bounds are generated by means of a heuristic finite scheduling procedure. The quality of the approach is tested with reference to various problem groups of differing sizes.
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Tempelmeier, H., Derstroff, M. Mehrstufige Mehrprodukt-Losgrößenplanung bei beschränkten Ressourcen und genereller Erzeugnisstruktur. OR Spektrum 15, 63–73 (1993). https://doi.org/10.1007/BF01720518
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DOI: https://doi.org/10.1007/BF01720518