Position control circuit for servomotor - has integrator output determining turn-on of thyristors when output is zero

摘要

The position control circuit is for a servomotor. It has an integrator (36) that only triggers a turn-on pulse for the thyristors when its output is zero. The integrator output is connected to two AND-gates (25, 26). THe control deviation can be switched over depending on its sign by an OR-gate (29) and the AND-gates between groups of thyristors (5, 6). The turn-on pulses are blocked via the turn-on pulse generator (39) when the integrator output has a given value.