| 摘要 |
<p>PURPOSE:To improve the plate thickness accuracy from its utmost tip by setting a difference of measured values of gage meter plate thickness and delivery plate thickness as a roll gap offset quantity, bringing it to exponential smoothing processing, and also, making an exponential smoothing learning gain immediately after a roll has been replaced larger than a steady rolling time learning gain. CONSTITUTION:At the time of rolling, a draft position is initialized by using a gage meter expression having a leaking term based on a rolling actual result in the past. In that case, a difference of measured values of gage meter plate thickness and delivery plate thickness, or a difference to mass flow plate thickness is set as a roller gap offset quantity. Also, the learning term of the gage member expression is that which has brought to the roll gap offset quantity to exponential smoothing processing, and also, an exponential smoothing learning gain immediately after the roller has been replaced or immediately after a mill has been stopped is made larger than a learning gain at the time of steady rolling. In such a way, the plate thickness accuracy can be improved from its utmost tip.</p> |
