NDLI: Adaptive regulation of a class of uncertain nonlinear systems by output feedback

Content Provider	IEEE Xplore Digital Library
Author	Liang Dong Hongjun Ma Lin Li
Copyright Year	2011
Description	Author affiliation: College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning, 110004 (Liang Dong; Lin Li) \|\| College of Information Science and Engineering, Northeastern University, Shenyang, 110004 (Hongjun Ma)
Abstract	This paper studies the problem of global stabilization by output feedback for a family of uncertain nonlinear systems without zero dynamics. The class of uncertain systems under consideration is assumed to be dominated by a bounding system, which is of polynomial growth in the unmeasurable states and can be a polynomial function of the system output, with unknown growth rate. To achieve global state regulation in the presence of parametric uncertainty, we propose a non-identifier based output feedback control scheme by employing the idea of universal control integrated with the design of a linear high-gain observer, whose gains are composed of two components, both of them are not constant and need to be dynamically updated. The novelty of this paper is that a universal-type adaptive output feedback controller is numerically constructed by using a sum of squares (SOS) optimization algorithm, which can globally regulate all the states of the uncertain systems while maintaining global boundedness of the closed-loop system. An example is presented to show the effectiveness of this methodology.
Starting Page	2447
Ending Page	2452
File Size	408297
Page Count	6
File Format	PDF
ISBN	9781424487370
e-ISBN	9781424487387
DOI	10.1109/CCDC.2011.5968619
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-23
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptive systems Observers Polynomials Nonlinear dynamical systems output feedback Joints Nonlinear systems Output feedback sum of squares universal adaptive control
Content Type	Text
Resource Type	Article

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