Time domain analysis of servo and regulatory responses of various controllers

Author

Hari, V.M. ; Lakshmi, P. ; Kalaivani, R.

Author_Institution

Coll. of Eng., Anna Univ., Chennai, India

fYear

2014

Firstpage

130

Lastpage

134

Abstract

This paper analyses the performance of various conventional controllers for servo and regulatory performance of a Higher Order (HO) as well as a First Order Plus Dead Time (FOPDT) system. The designed simple Smith Predictor (SP) works good for servo performance of the system with delay by preventing the overshoot in the unit step response. The PID tuned with oscillation curve method ensures better regulatory performance than the auto tuned PID using closed loop method and the Internal Model Control (IMC). The Simulations have been carried out by MATLAB simulation software.

Keywords

closed loop systems; control system analysis; delays; servomechanisms; step response; three-term control; time-domain analysis; FOPDT system; HO system; IMC; MATLAB simulation software; Smith Predictor; auto tuned PID; closed loop method; controllers; delay; first order plus dead time system; higher order system; internal model control; oscillation curve method; regulatory responses; servo performance; time domain analysis; unit step response; Adaptation models; Control systems; Instruments; Predictive models; Process control; Tuning; Vibrations; FOPDT; IMC; PD+I controller; PID controller; Smith predictor;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Computing (ICoAC), 2014 Sixth International Conference on

Print_ISBN

978-1-4799-8466-4

Type

conf

DOI

10.1109/ICoAC.2014.7229760

Filename

7229760