| 摘要 |
A servo-motor control system varies a set point input signal to a comparator between predetermined limits in order to establish three detectable output conditions. When the difference between the feedback signal and the set point signal exceeds the average deviation of the set point input to the comparator, the comparator produces a characteristic output signaling rotation in one direction. When this difference signal is less than a negative quantity equal to the average deviation, the comparator produces a characteristic output which signals rotation in the other direction. If the difference signal is less than the absolute average value, then a third characteristic output is produced which causes a cutoff in the energization of the motor. |
