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An adaptive fuzzy dead-zone compensation scheme and its application to electro-hydraulic systems
Citation Link: https://doi.org/10.15480/882.1924
Publikationstyp
Journal Article
Date Issued
2010
Sprache
English
Institut
TORE-DOI
Volume
32
Issue
1
Start Page
1
End Page
7
Citation
Journal of the Brazilian Society of Mechanical Sciences and Engineering 1 (32): 1-7 (2010)
Publisher DOI
Scopus ID
Publisher
Brazilian Society of Mechanical Sciences and Engineering ; SciELO
The dead-zone is one of the most common hard nonlinearities in industrial actuators and its presence may drastically compromise control systems stability and performance. Due to the possibility to express specialist knowledge in an algorithmic manner, fuzzy logic has been largely employed in the last decades to both control and identification of uncertain dynamical systems. In spite of the simplicity of this heuristic approach, in some situations a more rigorous mathematical treatment of the problem is required. In this work, an adaptive fuzzy controller is proposed for nonlinear systems subject to dead-zone input. The boundedness of all closed-loop signals and the convergence properties of the tracking error are proven using Lyapunov stability theory and Barbalat's lemma. An application of this adaptive fuzzy scheme to an electro-hydraulic servo-system is introduced to illustrate the controller design method. Numerical results are also presented in order to demonstrate the control system performance.
Subjects
adaptive algorithms
dead-zone
electro-hydraulic actuators
fuzzy logic
nonlinear control
DDC Class
620: Ingenieurwissenschaften
More Funding Information
State of Rio de Janeiro Research Foundation (FAPERJ)
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