| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a scheduling method capable of maximizing processing capacity in a hot rolling process in consideration of synchronization of capacities for a heating furnace and a rolling mill, and electric power costs as well as rolling constraints and heating constraints. <P>SOLUTION: All slabs as a scheduling target are divided into groups, and a primary plan for sequential orders of all the groups in accordance with a rule of synchronization giving a higher valued score when speed difference between heating speed and rolling speed is smaller and a rule of sequential relations giving higher valued score when the difference of heating conditions between front and rear groups is smaller. Based on the primary plan, an estimation of heating loss time and rolling loss time, and an estimation of whole electric power costs are further performed, and a sequential order minimizing the whole electric power costs in a range where increase of the rolling loss time is within a permissible range is recalculated. Then, a sequential order of all groups is determined. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
