Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2012-02-01

Journal: Chuan Bo Li Xue/Journal of Ship Mechanics

Included Journals: Scopus、ISTIC、PKU、EI

Volume: 16

Issue: 1-2

Page Number: 181-190

ISSN: 10077294

Abstract: Smart materials have great application in active vibration control of flexible structures because of their low-quality, broadband, adaptability, etc. Based on the theory of first-order shear deformation, coupling the electrical and mechanical effects, a 4-node quadrilateral piezoelectric laminated element with 24 degrees of freedom for generalized displacements and one electrical potential degree of freedom for each piezoelectric element layer are derived, and the dynamic characteristics of a laminated beam are presented. A linear quadratic regulator (LQR) feedback controller is designed to suppress the vibration of a piezoelectric laminated beam in state space using the high precise direct (HPD) integration method.