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Robust adaptive backstepping synchronization for a class of uncertain chaotic systems using fuzzy disturbance observer |
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| Authors: | D H Ji S C Jeong Ju H Park S C Won |
| Institution: | 1. Mobile Communication Division, Digital Media and Communications, Samsung Electronics, Co. Ltd., Maetan-dong, Suwon, Gyeonggi-do, 416-2, Korea 2. Department of Electrical Engineering, Pohang University of Science and Technology, San 31 Hyoja-Dong, Pohang, 790-784, Korea 3. Nonlinear Dynamics Group, Department of Electrical Engineering, Yeungnam University, 214-1 Dae-dong, Kyongsan, 712-749, Republic of Korea |
| Abstract: | This paper proposes a robust adaptive backstepping synchronization method for a class of uncertain chaotic systems. Unknown factors including system uncertainties and external disturbances are estimated by a fuzzy disturbance observer. By use of the fuzzy disturbance observer, any prior information about the unknown factors is not need. The proposed method using the estimated values guarantees the global synchronization for chaotic systems with mismatched uncertainties in the sense of uniform ultimate boundedness. Finally, numerical examples are presented to show the effectiveness of the method. |
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