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Subject Keyword Abstract Author
Indirect Adaptive Fuzzy Control for a Class of Nonaffine Nonlinear Systems with Unknown Control Directions

Salim Labiod and Thierry Marie Guerra
International Journal of Control, Automation, and Systems, vol. 8, no. 4, pp.903-907, 2010

Abstract : This article presents an indirect adaptive fuzzy control scheme for a class of nonlinear uncertain nonaffine systems with unknown control directions. The nonlinear nonaffine system is first transformed into an affine form by using a Taylor series expansion, and then fuzzy systems are em-ployed to approximate the equivalent affine system’s unknown nonlinearities. By modifying the esti-mated input control gain and using a novel smooth robust control term, a stable well-defined adaptive controller is proposed. Simulation results are provided to illustrate the efficiency of the proposed scheme.

Keyword : Adaptive control, fuzzy control, nonaffine systems, unknown control direction.

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