| 摘要 |
PURPOSE:To eliminate the influence of external noise by integrating the pulse applied to a pulse motor and using it as a feedback signal, thereby shortening the feedback line. CONSTITUTION:A potentiometer 1 outputs a command signal corresponding to the operating angle of an operating level 2, and applies it through a deviation amplifier 3 to comparators 4, 5 as a window comparator. AND circuits 6, 7 respectively output normal and reverse pulses to a pulse drive circuit 9. These pulses are inputted to an up-down counter 20. The counted value of the counter 20 is applied through a D/A converter 21 as a feedback signal to a deviation amplifier 3. |
