Journal
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
Volume 22, Issue 9, Pages 945-958Publisher
WILEY-BLACKWELL
DOI: 10.1002/rnc.1737
Keywords
adaptive control; output feedback; uncertain nonlinear systems; the dynamic surface control
Funding
- National Natural Science Foundation of China [61074014, 61104017, 60874056]
- Science Foundation of Educational Department of Liaoning Province [L2010181]
- Natural Science Foundation of Liaoning Province [20102095]
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An adaptive output feedback control approach is studied for a class of uncertain nonlinear systems in the parametric output feedback form. Unlike the previous works on the adaptive output feedback control, the problem of explosion of complexity of the controller in the conventional backstepping design is overcome in this paper by introducing the dynamic surface control (DSC) technique. In the previous schemes for the DSC technique, the time derivative for the virtual controllers is assumed to be bounded. In this paper, this assumption is removed. It can be proven that the resulting closed-loop system is stable in the sense that all the signals are semi-global uniformly ultimately bounded and the system output tracks the reference signal to a bounded compact set. A simulation example is given to verify the effectiveness of the proposed approach. Copyright (c) 2011 John Wiley & Sons, Ltd.
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