期刊
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
卷 22, 期 14, 页码 1543-1561出版社
WILEY
DOI: 10.1002/rnc.1765
关键词
output feedback; nonlinear systems; homogeneous systems
资金
- U.S. National Science Foundation [HRD-0932339]
- National Natural Science Foundation of China [60804017, 60904020]
- Research Fund for the Doctoral Program of Higher Education of China [20090092120027]
- Natural Science Foundation of Jiangsu Province [BK2010200]
- National High Technology Research and Development Program of China (863 Program) [2009AA01Z311]
This paper addresses the problem of using output feedback to globally control a class of nonlinear systems whose output functions are not precisely known. First, for the nominal linear system, we design a homogeneous state compensator without requiring precise information of the output function, and construct a nonlinear stabilizer with adjustable coefficients by using the generalized adding a power integrator technique. Then based on the homogeneous domination approach, a scaling gain is introduced into the proposed output feedback controller, which can be used by tuning the scaling gain to solve: (i) the problem of global output feedback stabilization for a class of upper-triangular systems; and (ii) the problem of global practical output tracking for a class of lower-triangular systems. Copyright (c) 2011 John Wiley & Sons, Ltd.
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