A fuzzy adaptive variable-structure control scheme for uncertain chaotic MIMO systems with sector nonlinearities and dead-zones

作者：Boulkroune A^*; M'Saad M

来源：Expert Systems with Applications, 2011, 38(12): 14744-14750.

DOI：10.1016/j.eswa.2011.05.006

• Adaptive control
• Fuzzy system
• Variable-structure control
• MIMO chaotic systems
• Sector nonlinearities
• Dead-zone

In this paper, a fuzzy adaptive variable-structure controller is investigated for a class of uncertain multi-input multi-output (MIMO) chaotic systems with both sector nonlinearities and dead-zones. A suitable adaptive fuzzy system is used to reasonably approximate the uncertain functions. A Lyapunov approach is employed to derive the parameter adaptation laws and prove the boundedness of all signals of the closed-loop system as well as the exponential convergence of the closed-loop errors to an adjustable region. The proposed controller can be applied to the systems with or without sector nonlinearities and/or dead-zones in the input. The effectiveness of the proposed fuzzy adaptive controller is illustrated throughout simulation results.

• 出版日期2011-12