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Adaptive Fuzzy Output-Feedback Controller Design for Nonlinear Time-Delay Systems With Unknown Control Direction.
- Source :
-
IEEE Transactions on Systems, Man & Cybernetics: Part B . Apr2009, Vol. 39 Issue 2, p363-374. 12p. 3 Black and White Photographs, 4 Graphs. - Publication Year :
- 2009
-
Abstract
- Abstract-In this paper, the robust-control problem is investigated for a class of uncertain nonlinear time-delay systems via dynamic output-feedback approach. The considered system is in the strict-feedback form with unknown control direction. A full-order observer is constructed with the gains computed via linear matrix inequality at first. Then, with the bounds of uncertain functions known, we design the dynamic output-feedback controller such that the closed-loop system is asymptotically stable. Furthermore, when the bound functions of uncertainties are not available, the adaptive fuzzy-logic system is employed to approximate the uncertain function, and the corresponding output-feedback controller is designed. It is shown that the resulting closed-loop system is stable in the sense of semiglobal uniform ultimate boundedness. Finally, simulations are done to verify the feasibility and effectiveness of the obtained theoretical results. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10834419
- Volume :
- 39
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Systems, Man & Cybernetics: Part B
- Publication Type :
- Academic Journal
- Accession number :
- 37270200
- Full Text :
- https://doi.org/10.1109/TSMCB.2008.2005204