| 摘要 |
<p>PURPOSE:To improve the sheet shape accuracy as well as the sheet thickness accuracy by controlling shift quantity of a taper roll by controlling pressing increments of a backup roll, calculating predictive sheet thickness variation amounts, and also controlling rolling roll drafts. CONSTITUTION:A sheet thickness controller 8 calculates a rolling roll drafting quantity based on a signal (a) from a thickness gage 7 and a signal (b) from a rolling load detection means, outputs a signal (c), and controls a roll drafting means. On the other hand, a shape controller 9 calculates a pressing increment quantity of a backup roll and a shift quantity of a taper roll based on a signal (d) from a shape detector 6, outputs control signals (e), (f), and controls a backup roll pressing means and a taper roll shifting means to the extent of the above calculation quantity. A noninterfering controller 10 calculates a predictive sheet thickness variation amount based on the signal (b) from the rolling load detection means and the control signal (e) for the pressing increment from the controller 9. The noninterfering controller 10 outputs a control signal (g) based on the calculated thickness variation quantity to draft the rolling roll.</p> |
