| 摘要 |
<p>PURPOSE:To obtain a high flatness at all stands by making the balance of flatness at all stands into consideration. CONSTITUTION:This device is composed of a model parameter calculating means 2, max./min. sheet crown ratio calculating means 3, target sheet crown ratio determining means 4 for determining the variation of sheet crown ratio at each stand and manipulated variable determining means 5 for controlling sheet shape. By an objective sheet crown ratio determining means 4, the objective sheet crown ratio is determined so that the variation of sheet crown ratio between stands is stepwise decreased from the stands on the upstream side to the stand on the downstream side.</p> |
