Nonlinear Dynamics

, Volume 57, Issue 3, pp 431–439 | Cite as

Adaptive robust fuzzy control for a class of uncertain chaotic systems

  • Yan-Jun Liu
  • Ya-Qin Zheng
Original Paper


In this paper, the output feedback control of uncertain chaotic systems is addressed via an adaptive robust fuzzy approach. Fuzzy logic systems are employed to approximate uncertain nonlinear functions in the chaotic systems. Because only partial information of the system’s states is needed to be known, an observer is given to estimate the unmeasured states. Compared with the existing results in the observer design, the prior knowledge on dynamic uncertainties is relaxed and a class of more general chaotic systems is considered as well as robustness to the approximation error is improved. It can be proven that the closed-loop system is stable in the sense that all the variables are bounded. Simulation example for the unified chaotic systems is given to verify the effectiveness of the proposed method.


Uncertain chaotic systems Adaptive control Fuzzy control Output feedback control 


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Department of Mathematics and PhysicsLiaoning University of TechnologyJinzhouChina

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