Title :
Electronically adjustable PD controller using OTAs
Author :
Petchmaneelumka, Wandee ; Cheypoca, Thepjit ; Riewruja, Vanchai
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok, Thailand
Abstract :
A method for realizing the PD controller is presented in this paper. The circuit implementation is based on operational transconductance amplifiers (OTAs) as active elements with a grounded capacitor. The proportional gain and derivative time can be electronically varied by tuning the external bias current of OTA. Moreover, the structure of the proposed scheme can be simply realized the PID controller by including resistor-capacitor series network at the output terminal. Experimental results verifying the performances of the proposed circuit are in close agreement with the theoretical values.
Keywords :
PD control; capacitors; circuit tuning; operational amplifiers; three-term control; OTA; PID controller; electronically adjusting PD control; grounded capacitor; operational transconductance amplifiers; resistor-capacitor series network; Analog integrated circuits; Capacitors; PD control; Resistance; Transconductance; Transfer functions; OTA; PD controller; electronically adjusting property;
Conference_Titel :
SICE Annual Conference (SICE), 2011 Proceedings of
Conference_Location :
Tokyo
Print_ISBN :
978-1-4577-0714-8