System identification and active vibration control of a flexible structure
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Data
2012-01-01
Autores
de Abreu, Gustavo Luiz C. M. [UNESP]
da Conceicao, Sanderson M. [UNESP]
Lopes, Vicente [UNESP]
Brennan, Michael John [UNESP]
Santana Alves, Marco Tulio
Título da Revista
ISSN da Revista
Título de Volume
Editor
Abcm Brazilian Soc Mechanical Sciences & Engineering
Resumo
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.
Descrição
Palavras-chave
Observer/Kalman Filter Identification (OKID), Eigensystem Realization Algorithm (ERA), optimal vibration control, piezoelectric smart structures
Como citar
Journal of The Brazilian Society of Mechanical Sciences and Engineering. Rio de Janeiro Rj: Abcm Brazilian Soc Mechanical Sciences & Engineering, v. 34, p. 386-392, 2012.