| 摘要 |
<p>PURPOSE:To improve the controllability of an automatic plate thickness control and control accuracy by finding the plate thickness correction amt. by multiplying by control coefft. by finding the deviation at previous time and this time of the feedback value in plate thickness control and controlling the plate thickness based on the target plate thickness control amt. added to the plate thickness control amt. of the previous time. CONSTITUTION:The rolling load Pt detected by a rolling load detector 14 is taken in as this time value Pt to a memory 22a. The rolling load Pt-1 at the previous time sampling time is taken and stored and those deviations DELTASt are outputted from an adder 23. And a control coefft. is multiplied by a multiplier 25 to find rolling reduction correction amt. DELTASt. The rolling reduction correction amt. DELTASt is written in a memory 31 by a rolling reduction control device 30, the rolling reduction correction amt. DELTASt is added to the previous time target rolling reduction position Lt-1 stored in a memory 34 and stored in the memory 34 as the this time target rolling reduction position Lt. The deviation DELTALt of a detected position La with the target rolling position Lt is then found by an adder 35 and outputted to an oil pressure rolling reduction device 12 as rolling reduction control amt.</p> |
