| 摘要 |
<p>PURPOSE:To execute a shape control of a rolling mill so that a shape failure of a strip is not generated, in a transient state of the time when changing a pass schedule of a metallic strip which is being rolled, by making all the change time coincide with the maximum value in each necessary change time, in case of the above-mentioned change. CONSTITUTION:In case of executing a plate thickness change of a metallic strip in the course of running without stopping a rolling mill, a draft position of a stand of the time when a plate thickness changing point passes through each stand of the rolling mill, a roll speed, and a change quantity of a bender force are denoted as DELTAS, DELTAV, DELTAPs, respectively. In this state, a step command of a change quantity is outputted from each control system, but when each necessary change time of DELTAS, DELTAV and DELTAPs is denoted as Ts, Tv, and Ts, respectively, the change of DELTAS, DELTAV and DELTAPs is executed by a change time of their maximum value Tmax. As a result, the generation of a strip shape failure is suppressed as mentioned above, and the quality of a product can be improved.</p> |
