Cmos programmable pid controller circuit based analogue switches

NONTHAPUTHA, Thanat; KUMNGERN, Montree

doi:10.15199/48.2021.07.07

Cmos programmable pid controller circuit based analogue switches

Author(s)

NONTHAPUTHA, Thanat

KUMNGERN, Montree

Date Issued

January 1, 2021

Type

Article

DOI

10.15199/48.2021.07.07

Abstract

This paper presents a new programmable proportional (P)-integral (I)-derivative (D) (PID) controller using current conveyor transconductance amplifiers (CCTAs). The proposed PID controller uses the second-generation current conveyor which is the first stage of CCTA to operate as current conveyor analogue switch. The proportional gain, integral time constant and derivative time constant can be controlled electronically using transconductance amplifiers of CCTA. Unlike previous analogue PID controllers, variant P, I, D, PI, PD and PID controllers of this circuit can be programmed by using bias currents without changing any input and output connections. The proposed structure is highly suitable for integrated circuit (IC) implementation by using only grounded passive comments. The proposed programmable PID controller circuits have been simulated using 0.18 μm CMOS process. The simulation results are used to confirm the workability of the proposed circuits. Additionally, the performance evaluation of the proposed programmable PID controller circuit is verified by unit step input for a close-loop system with the secondorder low-pass filter in the plant.

Citation

Przeglad Elektrotechniczny, 97(7), 35-41, 2021