Santa Clara University

80_electrical_engineering

Dragoslav Siljak, Dr. Sci.

Drago Siljak Title: Professor of Electrical Engineering
Office: EC 248
Phone: 408-554-4488
Fax: 408-554-5474
Email: dsiljak@scu.edu
Website: http://www.ee.scu.edu/eefac/siljak/
Education: Dr. Sci., University of Belgrade, 1963
MSEE, University of Belgrade, 1961
BSEE, University of Belgrade, 1958
Interests: Controls and systems

Biography

Academic Appointments:

B & M Swig University Chair, 1983-present.
Professor, Department of Electrical Engineering, 1964-1983.
Docent Professor, Faculty of Electrical Engineering, University of Belgrade, Belgrade, Yugoslavia, 1963-1964.
Assistant Professor, Faculty of Electrical Engineering, University of Belgrade, Belgrade, Yugoslavia, 1960-1963.

Visiting Positions:

The Hoam Distinguished Foreign Scholar, Seoul National University, Seoul, South Korea, 1991.
Distinguished Professor, Fulbright Foundation, University of Belgrade, Belgrade, Yugoslavia, 1984.
Distinguished Foreign Lecturer, Japan Society for Promotion of Science, Kyoto University, Kyoto, Japan, 1981.

Plenary Lectures:

Dynamic Graphs, The International Conference on Hybrid Systems and Applications, University of Louisiana, Laffayette, LA, May 22, 2006.

Control of Large-Scale Systems: Beyond Decentralized Feedback, The 10th IFAC Symposium on Large-Scale Systems, Osaka, Japan July 26-28, 2004.

Organically-Structured Control of Complex Systems, International Conference on Continuous, Discrete and Impulsive Systems, London, Ontario, Canada, 2001.

Organically-Structured Control via Inclusion Principle for Discrete-Time Dynamic Systems, Augsburg, Germany, 2001.

Stability of Polytopic Dynamic Systems, International Conference on Differential Equations and Dynamic Systems, University of Waterloo, Waterloo, Canada, 1997.

Decentralized Control and Computations: Status and Prospects, The 8th IFAC Symposium on Large Scale Systems, London, 1995.

Parametric Stability of Comparison Systems, Symposium on Comparison Methods and Stability Theory, The Fields Institute for Research in Mathematical Sciences, Waterloo, Canada, 1993.

Parametric Stability, University of Genova-The Ohio State University Joint Conference on New Trends in System Theory, Genova, Italy, 1990.

Decentralized Control and Estimation of Large Scale Systems, Second SIAM Conference on Linear Algebra: Signals, Systems, and Control, San Francisco, California, 1990.

Decentralized Control with Overlapping Information Sets, International Conference on differential Equations and Applications, Colorado Springs, Colorado, 1989.

Hierarchical Liapunov Functions, International Symposium on Lyapunov Functions, Irkutsk, Russia, 1989.

Professional Membership:

Life Fellow, Institute of Electrical and Electronics Engineers (IEEE).
Fellow, International Federation of Nonlinear Analysts (IFNA).
International Fellow: Serbian Academy of Sciences and Arts.

Editorial Membership:

Associate Editor for the following Journals:
Communications in Applied Analysis
Journal of Difference Equations
Nonlinear Analysis
Mathematical Problems in Engineering
Dynamics of Continuous, Discrete and Impulsive Systems
Nonlinear Studies
Stability and Control: Theory and Applications
International Journal of Computer Research
Problems of Nonlinear Analysis in Engineering Systems
International Journal of Hybrid Systems
Nonlinear Dynamics and Systems Theory

Research Overview

Complex Dynamic Systems: Decentralized Control and Computation:

Complexity is a central problem in modern system theory and practice. Because of our intensive and limitless desire to build and control ever larger and more sophisticated systems, the orthodox concept of a high performance system driven by a central computer has become obsolete. New emerging notions are subsystems, interconnections, distributed intelligence, decentralized control, parallel processing, and automated factories, to mention a few. It is becoming apparent that a "well-organized complexity" is the way of the future.

Our accumulated experience in controlling large complex systems suggests three basic features that characterize complex systems:
Dimensionality
Information Structure Constraints
Uncertainty

The research status and prospects of decentralized control and computation of large complex systems have been described in the following survey papers and monographs.

Papers:

LARGE SCALE AND DECENTRALIZED SYSTEMS, Wiley Encyclopedia of Electrical and Electronics Engineering, J. G. Webster (Ed.), John Wiley & Sons, New York, 1999, pp. 209-224. Co-author: A. I. Zecevic.

DECENTRALIZED CONTROL, The Control Handbook, W. S. Levine (Ed.), CRC Press, Boca Raton, FL, 1996, pp. 779-793. Co-author: M. E. Sezer.

DECENTRALIZED CONTROL AND COMPUTATION: STATUS AND PROSPECTS, Automatica Review of Control, vol. 20, 1996, pp. 131-141.

Books:

DECENTRALIZED CONTROL OF COMPLEX SYSTEMS, Academic Press, Boston, MA, 1991. Russian Translation: MIR, Moscow, 1994.

LARGE-SCALE DYNAMIC SYSTEMS: STABILITY AND STRUCTURE, North-Holland, New York, 1978.

Parameter Space Methods for Robust Stability Analysis and Control Design:

The objective of this research is to formulate methods for robust stabilization of uncertain systems. The basis for this research effort is described by the following survey paper and a book on nonlinear systems:

PARAMETER SPACE METHODS FOR ROBUST CONTROL DESIGN: A GUIDED TOUR, IEEE Transactions on Automatic Control, 34 (1989) 674-688.

This paper provides a review of past and recent (before 1989) contributions to the parameter space methods for analysis and design of robust control systems. Both the classical approach via characteristic equation and new methods based upon Lyapunov functions and Riccati equations are discussed. Directions for future research are indicated.

NONLINEAR SYSTEMS: THE PARAMETER ANALYSIS AND DESIGN, Wiley, New York, 1969.

Recent Research Papers

Plenary Talk

The International Conference on Hybrid Systems and Applications
University of Louisiana, Lafayette, LA, May 22-26, 2006
DYNAMIC GRAPHS

Plenary Talk

The 10th IFAC Symposium on Large Scale Systems
Osaka, Japan, July 26-28, 2004
CONTROL OF LARGE-SCALE SYSTEMS: BEYOND DECENTRALIZED FEEDBACK

INCLUSION PRINCIPLE FOR DESCRIPTOR SYSTEMS, IEEE Transactions on Automatic Control, 2009.

ROBUST STABILIZATION OF NONLINEAR INTERCONNECTED SYSTEMS BY DECENTRALIZED DYNAMIC OUTPUT FEEDBACK, Systems & Control Letters, 2009.

CONTROL DESIGN WITH ARBITRARY INFORMATION STRUCTURE CONSTRAINTS, Automatica, 2008.

STABILIZATION OF FIXED MODES IN EXPANSIONS OF LTI SYSTEMS, Systems & Control Letters, 2008.

COOPERATIVE AVOIDANCE CONTROL FOR MULTIAGENT SYSTEMS, Journal of Dynamic Systems, Measurement, and Control, 2007.

DECENTRALIZED DYNAMIC OUTPUT FEEDBACK FOR ROBUST STABILIZATION OF A CLASS OF NONLINEAR INTERCONNECTED SYSTEMS, Automatica, 2007.

A CANONICAL FORM FOR THE INCLUSION PRINCIPLE OF DYNAMIC SYSTEMS, SIAM Journal of Control and Optimizations, 2006.

STABILITY OF INTERVAL TWO-VARIABLE POLYNOMIALS AND QUASIPOLYNOMIALS VIA POSITIVITY, Springer-Verlag, 2005.

GLOBAL LOW-RANK ENHANCEMENT OF DECENTRALIZED CONTROL FOR LARGE-SCALE SYSTEMS, IEEE Transactions of Automatic Control, 2005.

A DECOPMPOSITION-BASED CONTROL STRATEGY FOR LARGE, SPARSE DYNAMIC SYSTEMS, Mathematical Problems in Engineering, 2005.

A NEW APPROACH TO CONTROL DESIGN WITH OVERLAPPING INFORMATION STRUCTURE CONSTRAINTS, Automatica, 2005.

CONTROL OF LARGE-SCALE SYSTEMS IN A MULTIPROCESSOR ENVIRONMENT, Applied Mathematics and Computation, 2005.

DESIGN OF ROBUST STATIC OUTPUT FEEDBACK FOR LARGE-SCALE SYSTEMS, IEEE Transactions of Automatic Control, 2004.

ROBUST DECENTRALIZED EXCITER CONTROL WITH LINEAR FEEDBACK, IEEE Transactions on Power Systems, 2004.

STABILIZATION OF NONLINEAR SYSTEMS WITH MOVING EQUILIBRIA, IEEE Transactions on Automatic Control, 2003.

CONNECTIVE STABILITY OF DISCONTINUOUS DYNAMIC SYSTEMS, Journal of Optimization Theory and Applications, 2002.

STABILITY OF POLYTOPIC SYSTEMS VIA CONVEX M-MATRICES AND PARAMETER-DEPENDENT LIAPUNOV FUNCTIONS, Nonlinear Analysis, 2000.

JACOBI AND GAUSS-SEIDEL ITERATIONS FOR POLYTOPIC SYSTEMS: CONVERGENCE VIA CONVEX M-MATRICES, Reliable Computing, 2000

Research Group and Projects

Research Group

Santa Clara University:
D. D. Siljak, Professor
A. I. Zecevic, Associate Professor
E. Chang, Graduate Student

External Research Collaborators:
M. Ikeda, Osaka University, Osaka, Japan
M. E. Sezer, Bilkent University, Ankara, Turkey
Y. Ohta, Kobe University, Kobe, Japan
S. S. Stankovic, University of Belgrade, Belgrade, Yugoslavia
T. Wada, Osaka Prefecture University, Osaka, Japan
X. B. Chen, Anshan Institute, Anshan, P. R. China
D. M. Stipanovic, Stanford University, Stanford, California
D. Chu, National University of Singapore, Singapore

Research Project

DECENTRALIZED CONTROL OF LARGE-SCALE POWER SYSTEMS
NSF Grant, 2001

DECENTRALIZED CONTROL AND COMPUTATIONS OF LARGE POWER SYSTEMS
Principal Investigators: D. D. Siljak and A. I. Zecevic
NSF Grant: 1999-present

PARALLEL COMPUTATION AND DECENTRALIZED CONTROL OF LARGE POWER SYSTEMS
NSF Grant, 1996

PARALLEL COMPUTATION AND DECENTRALIZED CONTROL OF LARGE POWER SYSTEMS
Principal Investigators: D. D. Siljak and A. I. Zecevic
NSF Grant: 1995-1999

DECENTRALIZED CONTROL AND COMPUTATIONS OF COMPLEX SYSTEMS
NSF Grant, 1994

NESTED DECOMPOSITIONS FOR PARALLEL COMPUTATIONS OF LARGE SYSTEMS
Principal Investigator: D. D. Siljak
EPRI Grant: 1993-1995

NESTED DECOMPOSITIONS FOR PARALLEL COMPUTATIONS OF LARGE SYSTEMS
EPRI Grant, 1993

DECENTRALIZED CONTROL AND COMPUTATIONS OF COMPLEX SYSTEMS
Principal Investigator: D. D. Siljak
NSF Grant: 1992-1997

DECENTRALIZED CONTROL OF COMPLEX SYSTEMS
NSF Grant, 1990

CONTROL OF COMPLEX DYNAMIC SYSTEMS
NSF Grant, 1986

NSF WORKSHOP ON FUTURE DIRECTIONS OF RESEARCH IN SYSTEM THEORY AND APPLICATIONS
September 18-20, 1986, Santa Clara University

FUTURE DIRECTIONS OF RESEARCH IN SYSTEMS THEORY AND APPLICATIONS
Project Director: D. D. Siljak
NSF Grant: 1986

DECENTRALIZED CONTROL OF LARGE-SCALE SYSTEMS
NSF Grant, 1983

STABILITY ANALYSIS OF LARGE-SCALE SYSTEMS
Principal Investigator: D. D. Siljak
Department of Energy: 1979-1993

LARGE POWER SYSTEMS: STRUCTURE, STABILITY, AND VULNERABILITY
DOE Grant, 1977

MULTILEVEL CONTROL OF DYNAMIC SYSTEMS: STABILITY ANALYSIS OF THE SATURN V ROCKET, SKYLAB, AND LARGE SPACE TELESCOPE
NASA Grants, 1965-1974

MULTILEVEL CONTROL OF DYNAMIC SYSTEMS: STABILITY ANALYSIS OF THE SATURN V ROCKET, SKYLAB, AND LARGE SPACE TELESCOPE
Principal Investigator: D. D. Siljak
NASA Grants: 1965-1974

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