| 摘要 |
PURPOSE:To regulate a hold time without using special hold signal by advancing high frequency that a stepping motor cannot follow up, to exciting phase by one cycle. CONSTITUTION:A main important section is composed of a stepping motor 1, a computer 3, and Johnson counters 31, 32 for forming a signal generating means 30. The frequency of control signal is set to be high frequency that the stepping motor 1 cannot follow up, and the control signal group of a number for switching the exciting phase of the stepping motor 1 by one cycle is added. The stepping motor 1 cannot mechanically follow up at a high speed, and so a hold state is set even if the control signal is added without rotation. |
