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Title: Planning production on a single processor with sequence-dependent setups part 1: Determination of campaigns
Authors: Oh, H.-C. 
Karimi, I.A. 
Issue Date: 15-Aug-2001
Citation: Oh, H.-C., Karimi, I.A. (2001-08-15). Planning production on a single processor with sequence-dependent setups part 1: Determination of campaigns. Computers and Chemical Engineering 25 (7-8) : 1021-1030. ScholarBank@NUS Repository.
Abstract: Production planning of processors located within in a facility or distributed across facilities is a routine and crucial industrial activity. So far, most attempts at this have treated planning horizon as a decision variable, and have limited their scope to sequence-independent setups. In this two-part paper, we present a new and improved methodology for solving the single machine economic lot scheduling problem (ELSP) with sequence-dependent setups and a given planning horizon. We decompose the entire complex problem into two subproblems; one involving lot sizing and the other involving lot sequencing and scheduling. In this part, we present a novel mixed integer nonlinear programming (MINLP) formulation for the lot-sizing problem. Using a multi-segment separable programming approach, we transform this MINLP into a MILP and propose one rigorous and two heuristic algorithms for the latter. Based on a thorough numerical evaluation using randomly simulated large problems, we find that our best heuristic gives solutions within 0.01% of the optimal on an average and in much less time than the optimal algorithm. Furthermore, it works equally well on problems with sequence-independent setups. Overall, our methodology is well suited for real-life large-scale industrial problems. © 2001 Elsevier Science Ltd. All rights reserved.
Source Title: Computers and Chemical Engineering
ISSN: 00981354
DOI: 10.1016/S0098-1354(01)00676-7
Appears in Collections:Staff Publications

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