Novel active PID controller employing VDTA

Abstract

PID is most widely used in industrial process control. Voltage Differencing Transconductance Amplifier (VDTA) which is recently more popular in analog signal processing applications is discussed and integrated a proportional-integral-derivative (PID) controller. The proposed controller needs minimum number of active and passive components and demonstrates independent/electronic tuning of control parameters. In order to verify the suggested controller and controller's effect on second order step response of a VDTA based circuit is analyzed and presented in section II. The theoretical analysis proposed in this paper is tested through Or-CAD SPICE 9.1 simulations with TSMC 180nm CMOS process parameters.