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Uncertainty and Performance of Adaptive Controllers for Functionally Uncertain Output Feedback Systems

, , and . CDC, page 4515--4520. Tampa, Florida, IEEE, (December 1998)

Abstract

We consider nonlinear systems in an output feedback form which are functionally known up to a L2 measure of uncertainty. The control task is to drive the output of the system to some neighbourhood of the origin. A modified L2 measure of transient performance (penalising both state and control effort) is given, and the performance of a class of model based adaptive controllers is studied. An upper performance bound is derived.

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