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Direct adaptive fuzzy control for a nonlinear helicopter system

Direct adaptive fuzzy control for a nonlinear helicopter system Purpose – To design effective and practical controllers that use the adaptive fuzzy approaches and are applicable to helicopters. Design/methodology/approach – Based on Takagi‐Sugeno fuzzy systems, a new direct adaptive fuzzy control scheme is developed for a class of nonlinear multiple‐input‐multiple‐output systems. A simple observer is designed to generate an error signal for the adaptive law. The system states of the system are not required to be available for measurement. Findings – The overall adaptive scheme guarantees all the signals involved being uniformly bounded in the Lyapunov sense. Research limitations/implications – The implementation of this research work needs further investigation. Practical implications – The simplicity of the design algorithm facilitates the application of the design to helicopters by the use of Matlab. Originality/value – Experimental results of a two degree of freedom helicopter are presented to confirm the usefulness of the proposed new control scheme. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Direct adaptive fuzzy control for a nonlinear helicopter system

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References (14)

Publisher
Emerald Publishing
Copyright
Copyright © 2008 Emerald Group Publishing Limited. All rights reserved.
ISSN
0002-2667
DOI
10.1108/00022660810859346
Publisher site
See Article on Publisher Site

Abstract

Purpose – To design effective and practical controllers that use the adaptive fuzzy approaches and are applicable to helicopters. Design/methodology/approach – Based on Takagi‐Sugeno fuzzy systems, a new direct adaptive fuzzy control scheme is developed for a class of nonlinear multiple‐input‐multiple‐output systems. A simple observer is designed to generate an error signal for the adaptive law. The system states of the system are not required to be available for measurement. Findings – The overall adaptive scheme guarantees all the signals involved being uniformly bounded in the Lyapunov sense. Research limitations/implications – The implementation of this research work needs further investigation. Practical implications – The simplicity of the design algorithm facilitates the application of the design to helicopters by the use of Matlab. Originality/value – Experimental results of a two degree of freedom helicopter are presented to confirm the usefulness of the proposed new control scheme.

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Mar 21, 2008

Keywords: Fuzzy control; Helicopters; Non‐linear control systems

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