%0 Journal Article
%T System identification and active vibration control of a flexible structure
%A Abreu
%A Gustavo Luiz C. M. de
%A Concei£¿£¿o
%A Sanderson M. da
%A Lopes Jr.
%A Vicente
%A Brennan
%A Michael John
%A Alves
%A Marco Tš²lio Santana
%J Journal of the Brazilian Society of Mechanical Sciences and Engineering
%D 2012
%I Scientific Electronic Library Online
%R 10.1590/S1678-58782012000500007
%X the aim of this paper is to illustrate the active control of vibration of a flexible structure using a model-based digital controller. the state-space model of the system is derived using a system identification technique known as the observer/kalman filter identification (okid) method together with eigensystem realization algorithm (era). based on the measured response of the structure to a random input, an explicit state-space model of the equivalent linear system is determined. the model is used in a linear quadratic regulator (lqr) to control the first two modes of vibration of a cantilever beam using a piezoelectric actuator/sensor pair. experimental results demonstrate the efficacy of the proposed approach.
%K observer [kalman filter identification (okid)]
%K eigensystem realization algorithm (era)
%K optimal vibration control
%K piezoelectric smart structures.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1678-58782012000500007&lng=en&nrm=iso&tlng=en