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Lin Q.,Wuhan Naval University of Engineering | Wu X.,Wuhan Naval University of Engineering | Wu X.,Guangzhou Navy Academy | Wu X.,Guangzhou Navy Academy 075
Nonlinear Analysis: Real World Applications | Year: 2011

This paper investigates global complete synchronization of two identical power systems and global robust synchronization of two power systems with parameter mismatch and external disturbance, both under the masterslave linear state-error feedback control. Some criteria for achieving the synchronization via a single-variable linear coupling are derived and formulated in simple algebraic inequalities. These algebraic criteria are further optimized so as to improve their performances. The effectiveness of the new algebraic criteria is illustrated by the numerical examples. © 2010 Elsevier Ltd. All rights reserved. Source


Gui Z.,Wuhan Naval University of Engineering | Wu X.,Wuhan Naval University of Engineering | Wu X.,Guangzhou Navy Academy | Chen Y.,Wuhan Naval University of Engineering
International Journal of Modern Physics B | Year: 2013

This paper investigates the global synchronization problem of master-slave coupled multi-scroll saturated chaotic systems via single-state linear feedback control. An algebraic criterion for global synchronization is rigorously proven by means of the absolute stability theory. The obtained algebraic criterion is then optimized thereby deriving a less-conservative result, which is finally verified by numerical examples. © 2013 World Scientific Publishing Company. Source


Yang Y.,Wuhan Naval University of Engineering | Wu X.,Wuhan Naval University of Engineering | Wu X.,Guangzhou Navy Academy
Nonlinear Dynamics | Year: 2012

This paper investigates the global finite-time synchronization of a class of the second-order nonautonomous chaotic systems via a master-slave coupling. A continuous generalized linear state-error feedback controller with simple structure is introduced into the synchronization scheme. Some easily implemented algebraic criteria for achieving the global finite-time synchronization are proven and then optimized for the purposes of improving their sharpness. The optimized criteria are applied to a practical master-slave synchronization scheme for the single-machine-infinite-bus (SMIB) systems, obtaining the precise corresponding synchronization conditions. Several numerical examples are provided to illustrate the effectiveness of the new synchronization criteria. © 2012 Springer Science+Business Media B.V. Source


Wu X.,Wuhan Naval University of Engineering | Wu X.,Guangzhou Navy Academy | Gui Z.,Wuhan Naval University of Engineering | Chen G.,City University of Hong Kong
International Journal of Bifurcation and Chaos | Year: 2010

This paper provides a unified approach for achieving and analyzing global synchronization of a class of master-slave coupled multiscroll chaotic systems under linear state-error feedback control. A general mathematical model for such a class of multiscroll chaotic systems is first established. Based on some special properties of such systems, two less-conservative frequency-domain criteria for the desirable global synchronization are rigorously proven by means of the absolute stability theory. The analysis is then applied to two master-slave coupled modified Chua's circuits, obtaining the corresponding simple and precise algebraic criteria for global synchronization, which are finally verified by numerical simulations. © 2010 World Scientific Publishing Company. Source


Yang Y.,Wuhan University | Wu X.,Guangzhou Navy Academy | Gui Z.,Wuhan University
Proceedings - 2010 IEEE International Conference on Intelligent Computing and Intelligent Systems, ICIS 2010 | Year: 2010

In this paper, we investigate the problem of consensus tracking with a reference state using discrete-time algorithm. We analyze two cases: 1) directed networks with fixed topology; and 2) directed networks with communication time-delays and fixed topology. We introduce two discrete-time consensus tracking protocols for networks with and without time-delays, and then present the conditions that the protocol solves the consensus tracking problem. Finally, simulations are provided that show the efficiency of these results. ©2010 IEEE. Source

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