PID Controller Using Op-Amp
Generally, specifically combined ICs perform a control task. We can carry out simple controls using analog ICs, such as operational amplifier circuitry. The basic component of “Control Electronics” is an integrated circuit (IC). IC is a small electronic device made out of a semiconductor material.
According to equation 1, this analog circuit calculates PID control response. Sensor signal VIN is amplified by IC1 (P mode), integrated by IC2 (I mode), and differentiated by IC3 (D mode), and all three modes are summed by IC4 to derive control response VOUT. [Soource: Jeon and Chun]