| 摘要 |
<p>PURPOSE:To control so as to converge the deviation of plate thickness in a rolling material by suitably controlling the rolling roll gap even in the case of rolling with plural passes such as a reversible mill. CONSTITUTION:This control is basically a feed forward control. Then, the deviation of thickness at the outlet side of a rolling mill in the present pass is detected, this outlet side thickness deviation and an inlet side thickness deviation in the preceding pass stored in the preceding pass are compared, in the case where signals of these both thickness deviations are mutually approximate, the rolling roll gap of the rolling mill is controlled based on the inlet side thickness deviation in the preceding pass. Then, in the case where the signals of these both deviations are not approximate, it is controlled based on the inlet side thickness deviation in the present pass.</p> |
