Decentralized output-feedback control of large-scale nonlinear systems based on high-gain multiple time scaling

P. Krishnamurthy; F. Khorrami

doi:10.1109/ACC.2009.5160292

Decentralized output-feedback control of large-scale nonlinear systems based on high-gain multiple time scaling

P. Krishnamurthy, F. Khorrami

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A globally stabilizing decentralized outputfeedback controller is proposed for a general class of nonlinear interconnected large-scale systems. The subsystem interconnections and the dynamics of each subsystem feature both parametric and functional uncertainty. The controller design is based on a general high-gain scaling technique that utilizes arbitrary powers (instead of requiring successive powers) of the high-gain parameter with the powers chosen to satisfy certain inequalities depending on system nonlinearities. The scaling induces a weak-Cascading Upper Diagonal Dominance (w-CUDD) structure on the dynamics and allows relaxation of the cascading dominance assumption on upper diagonal terms. Disturbance attenuation properties of the proposed decentralized controller are also investigated.

Original language	English (US)
Title of host publication	2009 American Control Conference, ACC 2009
Pages	1952-1957
Number of pages	6
DOIs	https://doi.org/10.1109/ACC.2009.5160292
State	Published - 2009
Event	2009 American Control Conference, ACC 2009 - St. Louis, MO, United States Duration: Jun 10 2009 → Jun 12 2009

Publication series

Name	Proceedings of the American Control Conference
ISSN (Print)	0743-1619

Other

Other	2009 American Control Conference, ACC 2009
Country/Territory	United States
City	St. Louis, MO
Period	6/10/09 → 6/12/09

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/ACC.2009.5160292

Cite this

Krishnamurthy, P & Khorrami, F 2009, Decentralized output-feedback control of large-scale nonlinear systems based on high-gain multiple time scaling. in 2009 American Control Conference, ACC 2009., 5160292, Proceedings of the American Control Conference, pp. 1952-1957, 2009 American Control Conference, ACC 2009, St. Louis, MO, United States, 6/10/09. https://doi.org/10.1109/ACC.2009.5160292

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AB - A globally stabilizing decentralized outputfeedback controller is proposed for a general class of nonlinear interconnected large-scale systems. The subsystem interconnections and the dynamics of each subsystem feature both parametric and functional uncertainty. The controller design is based on a general high-gain scaling technique that utilizes arbitrary powers (instead of requiring successive powers) of the high-gain parameter with the powers chosen to satisfy certain inequalities depending on system nonlinearities. The scaling induces a weak-Cascading Upper Diagonal Dominance (w-CUDD) structure on the dynamics and allows relaxation of the cascading dominance assumption on upper diagonal terms. Disturbance attenuation properties of the proposed decentralized controller are also investigated.

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Decentralized output-feedback control of large-scale nonlinear systems based on high-gain multiple time scaling

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