| 摘要 |
<p>PURPOSE:To control a plate width with high accuracy without use of a width gage and a load cell by rolling a strip by correcting a horizontal spread factor and a torque arm factor based on a difference between a calculated and a measured electric current of an edger motor. CONSTITUTION:An electric current to an edger driving motor 4 is inputted to a learning arithmetic unit 10 as a measured electric current by a shunt 5 and the unit 10 calculates a horizontal spread factor KR correcting errors in a width spread amount and a torque arm factor lambdaa correcting errors in an edger limit amount based on the measured electric current and a calculated electric current by a prescribed equation and inputs the value of the above factors to an edger setting calculation device 11. When the succeeding strip is fed, a control signal based on the above correction values is outputted to an edger opening control motor 12 to perform an upset of an edger. Therefore, a plate width is controlled with high accuracy without use of a width gage and a load cell.</p> |
