Abstract
This paper investigates the problem of decentralized model reference adaptive control (MRAC) for a class of stable large scale interconnected systems. The interconnections are nonlinear with time varying delays which are bounded by polynomials with unknown gains. Also, it is assumed that both state and input delays are present. To overcome the input delay effect, a nested predictor based approach is adopted to predict the future states. The uniformly bounded stability of the closed loop system is proved by employing a suitable Lyapunov function. The effectiveness of the proposed approaches is illustrated by a numerical example.
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Recommended by Associate Editor Yingmin Jia under the direction of Editor Myo Taeg Lim.
Seyed Hamid Hashemipour was born on September 1983 in Langeroud, Iran. He obtained his B.Sc. degree in Electrical Engineering from the Lahijan Branch, IAU in 2005 and masters in Control Engineering from Tabriz University in 2007 and he is currently a Ph.D. student at the Science and Research Branch, IAU. The main areas of his interest are adaptive control, nonlinear control, time delayed systems analysis, controller tuning, multivariable control and process control.
Nastaran Vasegh received her B.S degree in Electronic Engineering in 2001, and both her M.S. degree in 2004 and the Ph.D. degree in 2008 in Control Engineering from K. N. Toosi University of Technology. She is the head of Control Engineering Department at Shahid Rajaee Teacher Training University. Her current research interests are in the areas of time delayed systems analysis and control, nonlinear control, and control applications in power systems.
Ali Khaki Sedigh is currently a professor of control systems with the Department of Electrical Engineering, K. N. Toosi University of Technology, Tehran, Iran. He obtained an honors degree in mathematics in 1983, a master’s degree in control systems in 1985 and a Ph.D. in control systems in 1988, all in the UK. He is the author and co-author of about 112 journal papers, 180 international conference papers and has published 14 books in the area of control systems. His main research interests are adaptive and robust multivariable control systems, complex systems and chaos control, research ethics and the history of control.
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Hashemipour, S.H., Vasegh, N. & Sedigh, A.K. Decentralized model reference adaptive control for interconnected time delay systems with delay in state and compensation of long delay in input by nested prediction. Int. J. Control Autom. Syst. 15, 1198–1206 (2017). https://doi.org/10.1007/s12555-015-0416-1
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DOI: https://doi.org/10.1007/s12555-015-0416-1