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PROCESS SCHEDULING SYSTEM, METHOD, AND PROGRAM

  • US 20120078407A1
  • Filed: 05/06/2010
  • Published: 03/29/2012
  • Est. Priority Date: 05/13/2009
  • Status: Active Grant
First Claim
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1. A method for determining a sequence of slabs fed to a hot rolling mill from an inventory slab sequence and a direct slab sequence according to processing of a computer, comprising the steps of:

  • representing data of the inventory slab sequence and data of the direct slab sequence on a storage device operatively connected to a processing unit of the computer as a data structure arranged respectively in first and second directions;

    forming a grid graph having intersections as nodes, from the data of the inventory slab sequence in the first direction and the data of the direct slab sequence in the second direction;

    weighting edges in the grid graph based on attributes of each slab in the inventory slab sequence and attributes of each slab in the direct slab sequence; and

    determining a combined slab sequence of the inventory slab sequence and the direct slab sequence, by a shortest path search from a start point to an end point in the weighted grid graph, wherein said processing unit performs one or more said forming, weighting and determining.

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