| 摘要 |
PURPOSE:To reduce control errors by correcting the roll speed of 1st rolling mill in proportion to the product of the plate thickness deviation and the arithmetic estimated value of an influence coefficient corresponding to the plate thickness deviation at the inlet side of 2nd rolling mill. CONSTITUTION:The plate thickness h1 at the outlet side of 1st rolling mill is inputted from a plate thickness gage 4 to a gain arithmetic unit 13, the first indication speed pulse of between rolling mills 1, 2 from a plate speedometer 51, and the second indication speed pulse at the outlet side of the rolling mill 2 from a plate speedometer 52. The arithmetic unit 13 outputs the arithmetic estimated value a/b of an influence coefficient to an arithmetic unit 12 with updating the operation and memory each time when a sampling pulse is generated. The arithmetic unit 12 inputs to a speed control unit 21 the roll speed correction DELTAVr1 of 1st rolling mill with performing the operation of the plate thickness deviation DELTAh1 as the signal of a/b.DELTAh1. Due to the speed correction being performed according to the rolling condition with said method the control errors in automatic control are reduced. |
