Design and implementation of 2-DOF PI controller schemes for conical tank system with evaluation on robustness

Winston Netto, Rohan Lakhani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In process control industries, the control of a nonlinear conical tank is a benchmark problem. The dynamics of the plant changes as the level of the tank changes due to the shape of the tank. A trade-off exists between robustness and tracking performance with 1-DOF controllers; we can get either a robust controller or controller with good transient performance but not both at the same time. 2-DOF controllers were introduced which solve this problem and deliver both robustness and transient performance. Three 2-DOF PI robust schemes were compared Kappa-Tau, model-reference robust tuning (MoReRT) and Butterworth rules with genetic algorithm. Butterworth gave high degree of robustness to varying plant dynamics and a transient performance which was close to that of the PID, while PID becomes unstable for changing plant dynamics, thus showing poor robustness.

Original languageEnglish
Title of host publicationAdvances in Control Instrumentation Systems - Select Proceedings of CISCON 2019
EditorsV.I. George, B.K. Roy
PublisherSpringer Gabler
Pages27-39
Number of pages13
ISBN (Print)9789811546754
DOIs
Publication statusPublished - 2020
Event16th Control Instrumentation System Conference, CISCON 2019 - Manipal, India
Duration: 08-11-201909-11-2019

Publication series

NameLecture Notes in Electrical Engineering
Volume660
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference16th Control Instrumentation System Conference, CISCON 2019
CountryIndia
CityManipal
Period08-11-1909-11-19

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

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