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- W2147499478 abstract "In previous papers we have introduced a sufficient condition f or uniform attractivity of the origin for a class of nonlinear time-varying systems which is stated in terms of persistency of excitation (PE), a concept well known in the adaptive control and systems identification literature. The novelty of our condition, called uniform �-PE, is that it is tailored for nonlinear functions of time and state and it allows us to prove uniform asymptotic stability. In this paper we present a new definition of u�-PE which is conceptually similar to but technically different from its predecessors and give several useful characterizations. We make connections between this property and similar properties previously used in the literature. We also show when this condition is necessary and sufficient for uniform (global) asymptotic stability for a large class of nonlinear time-varying systems. Finally, we show the utility of our main results on some control applications regarding feedforward systems and systems with matching nonlinearities." @default.
- W2147499478 created "2016-06-24" @default.
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- W2147499478 date "2008-01-01" @default.
- W2147499478 modified "2023-09-27" @default.
- W2147499478 title "Persistency of excitation for uniform convergence in nonlinear control systems" @default.
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