| 摘要 |
PURPOSE:To provide a control device which is almost maintenance-free, by a method wherein a winding frame for a paper is driven with the aid of a motor, and in delivery control, a generated consumption power is reproduced, and in winding control, a consumption power is controlled to a specified value. CONSTITUTION:In a titled control device, a winding frame 4, around which a sheet material is wound,is driven with the aid of an a.c. motor 11, the winding size of the sheet material 2 on the winding frame 4 is detected by a winding size detector 12, and the running speed of the sheet material 2 is detected by a speed detector 13. The tension of the sheet material 2 is detected by a tension detector 6, an output from the speed detector 13 is divided by an output from the winding size detector 12 by means of a divider 14, and the result is corrected by a correcting device 15. Meanwhile, an output from the tension detector 6 is compared with a reference tension set value by a comparator 8. In a frequency voltage control device 16, reference frequency responding to an output from the correcting device 15 is generated and a voltage of reference frequency responding to an error output from the comparator 8 is output to feed it to the motor 11, and the tension of the sheet material 2 is held at a specified value.
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