Relay Autotuning for Identification and Control

M. Chidambaram, Vivek Sathe

• Publisher: Cambridge University Press
• Year: 2014
• Print ISBN: 9781107058712
• eBook ISBN: 9781316093122
• Topic: Technology & Engineering
• Subtopic: Engineering General
• Index: Technology & Engineering

Proportional-integral-derivative (PID) controllers are extensively used for efficient industrial operations. Autotuning such controllers is required for efficient operation. There are two ways of relay autotuning cascade control systems – simultaneous tuning and sequential tuning. This book discusses incorporation of higher order harmonics of relay autotuning for a single loop controller and cascade control systems to get accurate values of controller ultimate gain. It provides a simple method of designing P/PI controllers for series and parallel cascade control schemes. The authors also focus on estimation of model parameters of unstable FOPTD systems, stable SOPTD and unstable SOPTDZ systems using a single relay feedback test. The methodology and final results explained in this book are useful in tuning controllers. The text would be of use to graduate students and researchers for further studies in this area.

Table of contents

• Cover
• Title
• Copyright
• Contents
• List of Figures
• List of Tables
• Acknowledgements
• Preface
• 1 Introduction
• 2 Improved Autotune Identification Methods
• 3 Cascade Controllers Tuning by Relay Autotune Method
• 4 Simultaneous Relay Autotuning of Cascade Controllers
• 5 A Simple Method of Tuning Cascade Controllers
• 6 Improved Saturation Relay Test for Systems with Large Dead Time
• 7 Identification of FOPTD Model using Single Symmetrical Relay Test
• 8 Autotuning of PID Controllers for Unstable FOPTD Systems
• 9 Autotuning of PID Controllers for Critically Damped SOPTD Systems
• 10 Estimation of SOPTD Transfer Function Model
• 11 Estimation of Five Parameters of Unstable SOPTD Model with a Zero
• 12 Identification of FOPTD Multivariable Systems
• 13 Identification of SOPTD Multivariable Systems
• 14 Tuning of Multivariable Controllers for Non-Minimum Phase Systems
• 15 Tuning of Multivariable Controllers by Genetic Algorithms
• 16 Summary and Conclusions
• Appendix A
• Appendix B
• Appendix C
• Nomenclature
• Problems
• Suggestive Reading
• References
• Index