NDLI: Output feedback control of switched nonlinear systems using multiple Lyapunov functions

Content Provider	IEEE Xplore Digital Library
Author	EI-Farra, N.H. Mhaskar, Prashant Christofides, P.D.
Copyright Year	2005
Description	Author affiliation: Dept. of Chem. Eng., California Univ., Los Angeles, CA, USA (EI-Farra, N.H.; Prashant Mhaskar; Christofides, P.D.)
Abstract	This work proposes a hybrid nonlinear output feedback control methodology for a broad class of switched nonlinear systems with input constraints. The key feature of the proposed methodology is the integrated synthesis, via multiple Lyapunov functions, of "lower-level" nonlinear output feedback controllers together with "upper-level" switching laws, based on available state estimates, that orchestrate the transitions between the constituent modes and their respective controllers. The output feedback controllers are synthesized, using a combination of bounded state feedback controllers, high-gain observers and appropriate saturation filters, to enforce asymptotic stability for the individual closed-loop modes and provide an explicit characterization of the corresponding output feedback stability regions in terms of the input constraints and the observer gain. The switching logic tracks the evolution of the state estimates generated by the observers and orchestrates switching between the stability regions of the constituent modes in a way that guarantees asymptotic stability of the overall switched closed-loop system. The differences between the state and output feedback switching strategies are discussed and a chemical process example is used to demonstrate the proposed approach.
Sponsorship	American Automatic Control Council
Starting Page	3792
Ending Page	3799
File Size	377520
Page Count	8
File Format	PDF
ISBN	0780390989
ISSN	07431619
e-ISBN	0780390997
DOI	10.1109/ACC.2005.1470565
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-06-08
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Output feedback Nonlinear control systems Control systems Nonlinear systems Lyapunov method Asymptotic stability Observers State estimation Control system synthesis State feedback
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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