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Adaptive Fuzzy Control for Nonlinear Pure-feedback Systems with External Disturbance and Unknown Dead Zone Output

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By using the adaptive backstepping technique, a novel adaptive fuzzy backstepping control scheme is proposed for the nonlinear pure-feedback systems with external disturbance and unknown dead zone output in this… Click to show full abstract

By using the adaptive backstepping technique, a novel adaptive fuzzy backstepping control scheme is proposed for the nonlinear pure-feedback systems with external disturbance and unknown dead zone output in this paper. The proposed control scheme not only guarantees that all the signals in the closed-loop system are semi-globally bounded, but also makes the tracking error converge to a small neighborhood of the origin by suitable choice of design parameters. Fuzzy logic systems are utilized to approximate the unknown nonlinear functions. The primary characteristic of this thesis is that the unknown dead zone output nonlinearity and external disturbance of pure-feedback systems is introduced. Finally, an instance is used to prove the superiority of scheme.

Keywords: zone output; unknown dead; external disturbance; dead zone; feedback systems; pure feedback

Journal Title: International Journal of Fuzzy Systems
Year Published: 2017

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