Analog / digital speed control apparatus for a direct-current servo system

摘要

A speed control device for a DC servo-system consists of an OP amplifier (33) that provides a speed error signal, a comparator (37) that compares the absolute value of the OP amplifier and the reference error, and switches (35, 36). the switch(35) is turned on and the switch (36) is cut off when the reference error is greater than the speed error, or when the speed error is greater than the reference error. When the switch (35) truns on, the circuit operates as a proportional integrator and as an accelerator/decelerator when the switch (36) turns on.