关键字：Discrete time-varying system; parametric uncertainty; Periodic adaptive control; asymptotic convergence

摘要：In this paper, we present a discrete periodic adaptive control for systems with time-varying parametric uncertainties which are periodic, and the only priori is the periodicity. The new adaptive controller updates the parameters and the control signal periodically in a pointwise manner over one entire period, in the sequel achieves the asymptotic tracking convergence. A simulation example illustrates the feasibility and effectiveness of the proposed method.

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