%0 Journal Article
%T S¨ªntese de controladores repetitivos chaveados: uma aplica£¿£¿o ¨¤ fontes ininterruptas de energia (UPS)
%A Flores
%A Jeferson Vieira
%A Pereira
%A Lu¨ªs Fernando Alves
%A Silva Jr
%A Jo£¿o Manoel Gomes da
%A Coutinho
%A Daniel Ferreira
%A Bonan
%A Guilherme
%J Sba: Controle & Automa£¿£¿o Sociedade Brasileira de Automatica
%D 2011
%I Sociedade Brasileira de Autom¨¢tica
%R 10.1590/S0103-17592011000200007
%X this paper presents a methodology for the synthesis of repetitive switched controllers to ensure the reference tracking of sinusoidal signals and the disturbance rejection on uninterruptible power supplies - ups. to improve both transitory and steady-state behavior of the output signal, we consider a state-space realization of a switched repetitive controller aiming two distinct operation conditions: transitory response (to improve the recovery time when the load is changed) and steady-state (to reduce the total harmonic distortion of the output signal when subjected to nonlinear loads). based on a state-space framework, a state feedback is introduced to ensure the stability of the closed-loop when it is subjected to an arbitrary switching function. from a lyapunov-krasovskii functional, lmi conditions are derived to compute the stabilizing feedback gain. the dynamic behavior of the proposed control scheme is presented through simulation of a real ups model subjected to non-linear loads.
%K repetitive control
%K switched controller
%K time-delay systems
%K uninterruptible power supplies - ups
%K linear matrix inequalities - lmis.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0103-17592011000200007&lng=en&nrm=iso&tlng=en