Adaptive dynamic surface control for a class of output-feedback nonlinear systems with guaranteed ℒ tracking performance

Qichao Zhao and Yan Lin

International Journal of Systems Science, 2011, vol. 42, issue 8, 1351-1362

Abstract: In this article, an output-feedback adaptive dynamic surface control (DSC) is proposed for a class of nonlinear systems. It is proved that, by using the new scheme, the explosion of the complexity problem in a traditional backstepping design can be eliminated, the semi-global stability of a closed-loop system can be guaranteed and, in particular, by choosing the design parameters and initialising the filters and the update law properly, we show that the ℒ∞ performance of the system-tracking error can be achieved without over-parametrisation. Another advantage of the proposed scheme compared with those traditional backstepping control and current adaptive DSC schemes, whose adaptive control law is obtained through a series of steps recursively, is that the adaptive law is needed only at the first design step, and therefore significantly reduces the design procedure.

Date: 2011
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DOI: 10.1080/00207721003768175

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