| 摘要 |
PURPOSE:To prevent the slip between the roll and the material, and to improve the product yield, by arranging the first, second, and third operators possessing specified functions, in the speed controller for the carrier roll for the material to be rolled, and by controlling the fluctuation in the current of the driving motor to under the specified value. CONSTITUTION:The current detecting shunt 9 for the motor 5, the input insulator 10, the mechanical loss current operator 11, the acceleration-deceleration current operator 12, and the dead band operator 13, are newly added to the conventional roll control mechanism consisting of the speed control operator 1, the control operator 2, the phase control operator, etc. The fluctuation of the motor corrent and the mechanical loss of the carrier roll corresponding to the rotational speed or its variation of the carrier roll, is converted to the current value by the operaors 11, 12; the sum of their outputs is compared with the current of the motor 5 obtained by the shunt 9, and the deviation is inputted to the dead band operator 13; only when the inputted deviation is the value just one step before causing the slip between the roll and the material, the input of the speed control operator 1 is corrected, and then, the current and speed of the motor 5 suitable for the sheet speed can be obtained by this constitution. |
