CONTROLLER FOR CONTINUOUS STEEL SHEET ROLLING MILL

摘要

PROBLEM TO BE SOLVED: To provide a controller for a continuous steel sheet rolling mill by which the quality of a product in the nose and rear end of the product is improved by performing set changing while continuing an AGC (automatic gage control) control without performing an FGC (flying gage change) control at a setting changing point between approximate schedules.

SOLUTION: It is judged to use either of the FGC control or the AGC control by comparing a rolling schedule at a setting changing point which is calculated by a rolling model mechanism 5 by an FGC judging mechanism 8. In the case of using the FGC control, it is judged that an FGC suppressing mechanism 85 is the FGC control between the approximate schedules and whether it is processable by only the AGC control or not and, in the case of YES, the rolling schedule is adjusted within an allowable range of the AGC control by an FGC adjusting mechanism 10A. In the case it is not processable by only the AGC control, a rolling schedule is adjusted by an FGC adjusting mechanism 10B so that the FGC control is preferentially used at stands in the early stage of a plurality of stands which comprise the continuous rolling mill and the rolling schedule is adjusted as so to use the AGC control at the stands in the post-stage.

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