| 摘要 |
<p>PURPOSE:To eliminate the need for a speed detector and to improve the effect in controlling by adjusting the output torque of a looper motor based on the voltage signal and current signal of the motor and controlling the attenuation of a looper vibration system. CONSTITUTION:A current detector 18 detects the current of a looper motor 5 and a voltage detector 19 detects the voltage of the motor 5. A computing element 2 outputs an arithmetic signal S by using a current detection signal I and voltage detection signal V and a multiplier 21 multiples the arithmetic signal S transmitted from the computing element 20 by a control gain. An adder 22 outputs an adding signal REF0 as a control reference signal to a current controller 14 by adding the output from the multiplier 21 to a torque reference signal REF, the output torque of the looper motor 5 is adjusted and the attenuation of the looper vibration system is optionally controlled.</p> |
