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LMI-based fuzzy chaotic synchronization and communications

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4 Author(s)
Kuang-Yow Lian ; Dept. of Electr. Eng., Chung Yuan Christian Univ., Chung Li, Taiwan ; Chian-Song Chiu ; Tung-Sheng Chiang ; Liu, P.

Addresses synthesis approaches for signal synchronization and secure communications of chaotic systems by using fuzzy system design methods based on linear matrix inequalities (LMIs). By introducing a fuzzy modeling methodology, many well-known continuous and discrete chaotic systems can be exactly represented by Takagi-Sugeno (T-S) fuzzy models with only one premise variable. Following the general form of fuzzy chaotic models, the structure of the response system is first proposed. Then, according to the applications of synchronization to the fuzzy models that have common bias terms or the same premise variable of drive and response systems, the driving signals are developed with four different types: fuzzy, character, crisp, and predictive driving signals. Synthesizing from the observer and controller points of view, all types of drive-response systems achieve asymptotic synchronization. For chaotic communications, the asymptotical recovering of messages is ensured by the same framework. It is found that many well-known chaotic systems can achieve their applications on asymptotical synchronization and recovering messages in secure communication by using either one type of driving signals or all. Several numerical simulations are shown with expected satisfactory performance

Published in:

Fuzzy Systems, IEEE Transactions on  (Volume:9 ,  Issue: 4 )

Date of Publication:

Aug 2001

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