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Simple adaptive variable structure control for unknown chaotic systems
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DOI：10.1016/j.cnsns.2009.04.036.png)
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This paper proposes two novel adaptive variable structure tracking controllers for a large class of chaotic systems with unknown dynamics in presence of both external disturbances and input nonlinearities. The pros and cons of each proposed methodology is also represented. In order to eliminate the chattering effect in the former controlled system, two corresponding fuzzy adaptive controllers are presented. Besides, synchronization of two nonidentical uncertain chaotic systems is investigated using our proposed methods in both full and reduced-order forms. It can be seen that not only Our proposed control schemes can be applied to a wide class of uncertain chaotic systems but also it is simple to implement in practical application. Finally. the proposed methods are applied to some famous chaotic systems to verify the effectiveness of the proposed methods. (C) 2009 Elsevier B.V. All rights reserved.
Keyword:
Adaptive tracking control
Chaotic systems
Input nonlinearity
Fuzzy systems
Non-identical chaos synchronization
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