Identification of Continuous-Time Systems: Linear and Robust Parameter Estimation, 1st Edition (Hardback) book cover

Identification of Continuous-Time Systems

Linear and Robust Parameter Estimation, 1st Edition

By Allamaraju Subrahmanyam, Ganti Prasada Rao

CRC Press

128 pages | 19 B/W Illus.

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Description

Models of physical systems are originally in continuous-time (CT) since they are based on physical laws which are invariably in CT. To identify these models directly in their native CT form, avoiding intermediate discrete time (DT) model identification, the established method consists of two stages. In the primary stage signals are processed by a general linear dynamic operation- computational or realized through prefilters to preserve the system parameters in their native continuous time form and the literature is rich on this aspect. This book complements the existing literature about identification of continuous-time systems by enhancing the secondary stage by considering models which are linear in unknown parameters thereby rendering estimation linear and robust.

Table of Contents

1. Introduction and Overview

1.1. Background

1.2. Introduction

1.3. Role of model parameterizations in system identification

1.4. Error quantification: An engineering necessity

2. Markov Parameter Models

2.1. Introduction

2.2. Markov parameter models

2.3. Finitization of Markov parameter sequence

2.4. Identifiability conditions

2.5. Convergence analysis of the algorithm

2.6. Illustrative examples

2.7. Summary and conclusions

3. Time Moment Models

3.1. Introduction

3.2. Time moment models

3.3. Finitization of time moment sequence

3.4. Illustrative examples

3.5. Choice of basis of parameterization

3.6. Summary and conclusions

4. Robust Parameter Estimation

4.1. Introduction

4.2. Problem description

4.3. Solution to the sub-optimal problem

4.4. Bounds on parameter errors

4.5. Summary and conclusions

5. Error Quantification

5.1. Introduction

5.2. Robust parameter estimation

5.3. Quantification of parameter errors

5.4. Illustrative examples

5.5. Conclusions

6. Conclusions

Bibliography

Subject Index

Author Index

1.1. Background

1.2. Introduction

1.3. Role of model parameterizations in system identification

1.4. Error quantification: An engineering necessity

2. Markov Parameter Models

2.1. Introduction

2.2. Markov parameter models

2.3. Finitization of Markov parameter sequence

2.4. Identifiability conditions

2.5. Convergence analysis of the algorithm

2.6. Illustrative examples

2.7. Summary and conclusions

3. Time Moment Models

3.1. Introduction

3.2. Time moment models

3.3. Finitization of time moment sequence

3.4. Illustrative examples

3.5. Choice of basis of parameterization

3.6. Summary and conclusions

4. Robust Parameter Estimation

4.1. Introduction

4.2. Problem description

4.3. Solution to the sub-optimal problem

4.4. Bounds on parameter errors

4.5. Summary and conclusions

5. Error Quantification

5.1. Introduction

5.2. Robust parameter estimation

5.3. Quantification of parameter errors

5.4. Illustrative examples

5.5. Conclusions

6. Conclusions

Bibliography

Subject Index

Author Index

About the Authors

Allamaraju Subrahmanyam (aka Subbu Allamaraju) received B.Tech. Degree in Electrical & Electronics Engineering from the Jawaharlal Nehru Technological University College of Engineering, Kakinada in 1990. In 1992, he received M.Tech. Degree in Control Systems Engineering and the Ph.D degree in 1995 both from the Indian Institute of Technology, Kharagpur, India.

Subbu is currently a Vice President of Technology at the Expedia Group, based in Seattle, Washington State, USA, where he leads several technology initiatives. His areas of current work include cloud computing, distributed systems, and automation of large-scale systems. He is a frequent speaker at various technology conferences on these topics. He also volunteers his time as an Expert-in-Residence at RippleWorks providing guidance for non-profits and social ventures.

Prior to his current role, Subbu was a Distinguished Engineer at eBay Inc. for five years, where he helped build eBay’s private cloud platform across multiple data centers. He also served in various software engineering roles in other technology companies like BEA Systems (now part of Oracle Corporation), Yahoo Inc., Wipro Infotech, and Computervision (now part of Parametric Technology Corporation).

Over the many years of his work in the USA he published four books:

  • RESTful Web Services Cookbook, O'Reilly Media (March 2010)
  • Professional Java Servlets 2.3, January 2002
  • Professional Java Server Programming J2EE, 1.3 Edition, Wrox (August 2001)
  • Professional Java E-Commerce, Wrox (January, 2001)

Earlier he published several research papers on Identification of Continuous Time systems using Markov Parameters and Time Moments.

GANTI PRASADA RAO received the B.E. degree in Electrical Engineering from Andhra University, India in 1963, M.Tech. (Control Systems Engineering) and Ph.D. degrees in Electrical Engineering in 1965 and 1970 respectively, both from the Indian Institute of Technology (IIT), Kharagpur, India. From July 1969 to October 1971, he was with the Department of Electrical Engineering, PSG College of Technology, Coimbatore, India, as an Assistant Professor. In October 1971 he joined the Department of Electrical Engineering, IIT Kharagpur as an Assistant Professor and was a Professor there from May 1978 to June 1997. From May 1978 to August 1980, he was the Chairman of the Curriculum Development Cell (Electrical Engineering) established by the Government of India at IIT Kharagpur. From October 1975 to July 1976, he was with the Control Systems Centre, University of Manchester Institute of Science and Technology (UMIST), Manchester, England, as a Commonwealth Postdoctoral Research Fellow. During 1982-1983, 1985, 1991, 2003, 2004, 2007, and 2009, he visited the Lehrstuhl für Elektrische Steuerung und Regelung, Ruhr-Universität Bochum, Germany as a Research Fellow of the Alexander von Humboldt Foundation. He visited the Fraunhofer Institut für Rechnerarchitectkur und Softwaretchnik (FIRST) Berlin, in 2003, 2004, 2007 2009, and 2011. He was a visiting professor in 2003 at University Henri Poincare, Nancy, France, and Royal Society sponsored Visiting Professor at Brunel University, UK in 2007. During 1992-1996 he was Scientific Advisor to the Directorate of Power and Desalination Plants, Water and Electricity Department, Government of Abu Dhabi and the International Foundation for Water Science and Technology where he worked in the field of desalination plant control. He is presently a Member of the UNESCO-EOLSS Joint Committee.

He has authored/coauthored four books: Piecewise Constant Orthogonal Functions and Their Applications to Systems and Control, Identification of Continuous Dynamical Systems- The Poisson Moment Functional (PMF) Approach (with D.C. Saha) , Generalised Hybrid Orthogonal Functions and their Applications in Systems and Control (with A. Patra) all the three published by Springer in 1983, 1983 and 1996 respectively,and Identification of Continuous Systems (with H. Unbehauen) Published by North Holland in 1987. He is Co-Editor (with N.K. Sinha) of Identification of Continuous Systems - Methodology and Computer Implementation, Kluwer, 1991. He has authored/coauthored over 150 research papers.

He is/was on the Editorial Boards of International Journal of Modeling and Simulation, Control Theory and Advanced Technology (C-TAT), Systems Science (Poland), Systems Analysis Modeling and Simulation (SAMS), International Journal of Advances in Systems Science and Applications (IJASSA) and The Students' Journal of IETE (India). He was Guest Editor of three Special Issues: one of C-TAT on Identification and Adaptive Control - Continuous time approaches, Vol.9, N0.1, March 1993, and The Students' Journal of IETE on Control, Vols. I&II, 1992-93, System Science, Special Issue dedicated to Z. Bubnicki, Volume 33, No.3, 2007. He organized several invited sessions in IFAC Symposia on Identification and System Parameter Estimation, 1988, 1991, 1994 and World Congress 1993. He was a member of the International Program Committees of these Symposia during 1988-1997. He was a member of the IFAC Technical Committee on Modelling, Identification and Signal Processing in 1996. He was Chairman of the Technical Committee of the 1989 National Systems Conference in India. He is co-editor (with Achim Sydow) of the book series "Numerical Insights Series" published by Taylor and Francis. He is a member of the International Advisory Boards of the International Institute of General Systems Science (IGSS), Systems Science Journal (Poland) and International Congresses of World Organisation of Systems and Cybernetics (WOSC).

Since 1996, Prof. Rao has been closely associated with the development of the Encyclopedia of Desalination and Water Resources (DESWARE) (www.desware.net) and Encyclopedia of Life Support Systems (EOLSS), developed under the auspices of the UNESCO (www.eolss.net)..

He received several academic awards including the IIT Kharagpur Silver Jubilee Research Award 1985, The Systems Society of India Award 1989, International Desalination Association Best Paper Award 1995 and Honorary Professorship of the East China University of Science and Technology, Shanghai. He was elected to the Fellowship of the IEEE with the citation ' FOR DEVELOPMENT OF CONTINUOUS TIME IDENTIFICATION TECHNIQUES'. The International Foundation for Water Science and Technology has established the ‘Systems and Information Laboratory’ in the Electrical Engineering Department at the Indian Institute of Technology, Kharagpur, in his honor.

He is listed in several biographical volumesand is a Life Fellow of The Institution of Engineers (India), Life Member Systems Society of India, Indian Society for Technical Education, Fellow of The Institution of Electronics and Telecommunication Engineers (India), Life Fellow of IEEE (USA), and a Fellow of the Indian National Academy of Engineering.

About the Series

Engineering Systems and Sustainability

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Subject Categories

BISAC Subject Codes/Headings:
TEC004000
TECHNOLOGY & ENGINEERING / Automation
TEC007000
TECHNOLOGY & ENGINEERING / Electrical