Adaptive fuzzy observer based synchronization design and secure communications of chaotic systems

被引：45

作者：

Hyun, CH ^{[1
]}

Kim, JH ^{[1
]}

Kim, E ^{[1
]}

Park, M ^{[1
]}

机构：

[1] Yonsei Univ, Dept Elect & Elect Engn, ICS Lab, Seoul 120749, South Korea

来源：

CHAOS SOLITONS & FRACTALS | 2006年 / 27卷 / 04期

关键词：

D O I：

10.1016/j.chaos.2005.04.056

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

This paper proposes a synchronization design scheme based on an alternative indirect adaptive fuzzy observer and its application to secure communication of chaotic systems. It is assumed that their states are unmeasurable and their parameters are unknown. Chaotic systems and the structure of the fuzzy observer are represented by the Takagi-Sugeno fuzzy model. Using Lyapunov stability theory, an adaptive law is derived to estimate the unknown parameters and the stability of the proposed system is guaranteed. Through this process, the asymptotic synchronization of chaotic systems is achieved. The proposed observer is applied to secure communications of chaotic systems and some numerical simulation results show the validity of theoretical derivations and the performance of the proposed observer. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：930 / 940

页数：11

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