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Robust output feedback stabilization of nonlinear systems with low‐order and high‐order nonlinearities
Author(s) -
Li Guangqi,
Lin Yan
Publication year - 2016
Publication title -
international journal of robust and nonlinear control
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.361
H-Index - 106
eISSN - 1099-1239
pISSN - 1049-8923
DOI - 10.1002/rnc.3389
Subject(s) - control theory (sociology) , nonlinear system , bounded function , observer (physics) , mathematics , controller (irrigation) , class (philosophy) , output feedback , order (exchange) , polynomial , nonlinear control , computer science , control (management) , mathematical analysis , physics , finance , quantum mechanics , artificial intelligence , economics , agronomy , biology
Summary In this paper, we consider the problem of global output feedback stabilization for a class of nonlinear systems whose nonlinearities are assumed to be bounded by both low‐order and high‐order nonlinearities multiplied by a polynomial‐type output‐dependent growth rate. Instead of the previously proposed dual observer, based on the homogeneous domination approach, a new reduced‐order observer is constructed, which greatly simplifies the closed‐loop controller and is able to cover a more general class of nonlinear systems. Copyright © 2015 John Wiley & Sons, Ltd.