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Design and Analysis of Modified Smith Predictors for Self-Regulating and Non-Self Regulating Processes with Dead Time

Saravanakumar, G and Wahidabanu, R S D and Nayak, Gurudas C and Thirunavukkarasu, I (2008) Design and Analysis of Modified Smith Predictors for Self-Regulating and Non-Self Regulating Processes with Dead Time. Indian Chemical Engineers, 50 (1).

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Abstract

A modification of Smith predictor for controlling higher order processes with integral action and long dead time is proposed in this paper. The controller used in the Smith predictor is an integral-proportional derivative controller where the integrator is in the forward path and the proportional and derivative control are in the feedback acting on the feedback signal. The main objective is to design a dead time compensator (DTC),which has minimum tuning arameters, simple controller tuning, robust performance of tuning formulas and to obtain a critically damped system, which is as fast as possible in its set point and load disturbance rejection performance. The controller in the present work was tuned by adaptive method. A survey of various DTCs and their performance analysis has also been presented in this paper.

Item Type: Article
Uncontrolled Keywords: Smith predictor, Integrating process, Dead time, Auto tuning, Controller, Tuning, Time constant, Process model.
Subjects: Engineering > MIT Manipal > Instrumentation and Control
Depositing User: MIT Library
Date Deposited: 08 Sep 2011 10:07
Last Modified: 27 Feb 2014 07:40
URI: http://eprints.manipal.edu/id/eprint/1276

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