The DC motor servo circuit with compensation performance composed of μA709

Published:2011/7/2 20:50:00 Author:Lucas | Keyword: DC motor , servo circuit , compensation performance | From:SeekIC

The circuit is used for small self-balancing recorder. The input stage uses the μA709 high-gain op amp, and output power amplifier stage uses differential amplifier. The circuit is added the feedback to reach the desired frequency characteristics.Integral feature is achieved by connecting Cl, C2 in series in the feedback circuit and differential compensation, and the time constant is determined by C3 and Rl. If Cl, C2 are shorted, the error of the system converted to the input is about lOmV. Afetr connecting Cl, C2 and accessing integral compensation, and the loop gain is about more than 7,000 times, so the static error is zero.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/The_DC_motor_servo_circuit_with_compensation_performance_composed_of_μA709.html

Print this Page | Comments | Reading(3)