Journal
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
Volume 22, Issue 14, Pages 1647-1660Publisher
WILEY-BLACKWELL
DOI: 10.1002/rnc.1774
Keywords
non-affine systems; pure-feedback systems; backstepping control; dynamic surface control; adaptive neural network control; tracking performance
Funding
- NSF of China [60874044]
- Beijing Natural Science Foundation [4112018]
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This paper proposes a novel dynamic surface control algorithm for a class of uncertain nonlinear systems in completely non-affine pure-feedback form. Instead of using the mean value theorem, we construct an affine variable at each design step, and then neural network is employed to deduce a virtual control signal or an actual control signal. As a result, the unknown control directions and singularity problem raised by the mean value theorem is circumvented. The proposed scheme is able to overcome the explosion of complexity inherent in backstepping control and guarantee the L8 tracking performance by introducing an initialization technique based on a surface error modification. Simulation results are presented to demonstrate the efficiency of the proposed scheme. Copyright (c) 2011 John Wiley & Sons, Ltd.
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