| 摘要 |
<p>PURPOSE:To attain step feeding and standstill state at an optional turning phase by mounting a rotation detecting means to a capstan shaft and using a controller to apply a prescribed control to DC motor drive. CONSTITUTION:A rotary encoder 12 is mounted to the capstan shaft 1a driven intermittently by a magnetic absorbing system DC motor 1 in the river 11. The controller 13 drives forward the motor 1 for a prescribed angle, and then reverses the motor succeedingly just before the angle reaches a prescribed intermittent object, the motor 1 is inched and driven forward till the object angle. Thus, the step feeding in response to the resolution of the encoder 12 and standstill state at an optional rotary phase are attained by providing a feedback loop to the driver of the motor 1 having a step angle in response to the number of magnetic poles of a rotor 2 and a stator 3.</p> |
