| 摘要 |
PURPOSE:To reduce a variation of a plate thickness of a delivery caused by a disturbance, and also, to eliminate a deviation of a plate thickness by correcting and controlling a rotating speed of a motor of a rewinding reel in order to adjust a strip speed of an entry. CONSTITUTION:A feedback control device 17 executes a control operation basing on a strip speed of a delivery inputted from a speed detector TG5 and a plate thickness deviation signal inputted from a thickness gauge 7 of a delivery side. Subsequently, a control signal is outputted to a voltage control device 112, an armature voltage of a motor M2 is controlled in order to correct an entry strip speed, and also a draft position correcting quantity required for preventing an entry tension variation of a strip S caused by correcting the entry strip speed is calculated. It is outputted to a position control device 18, a rolling reduction motor M8 of a rolling mill 1 is driven by a draft position control device 18, and a draft position is changed. |
