| 摘要 |
PURPOSE:To provide a highly accurate winding without using a tension detector by measuring the mechanical loss during a speed control mode operation and calculating the factors for fixed part, speed proportional part and wound-up weight proportional part based on the value measured, and operationally correcting the value of the mechanical loss at every moment. CONSTITUTION:The output of a number-of-revolutions detector 3 directly connected to a draw-off roll 2 is inputted in a winding diameter calculator 15 through an amplifier 14. Based on the obtained winding diameter D and various operational factors from volumes 17 to 20, a tension reference value FO is calculated through a tension reference calculator 16. Then, an electric current reference value CR is obtained in an electric current reference calculator 21 and added to the mechanical loss correction value CMEC in an adder unit 45 to produce a current command value CCOM, which controls a DC motor 10 for driving a winding shaft 9, through a changeover switch 32 and a control circuit 34. The correction value CMEC described above is calculated in a mechanical loss correction calculator 44, based on the factors KM1 to KM3 obtained by a factor calculator 43, the winding diameter D, and the motor r.p.m. N. |
