点击次数：

论文类型： 期刊论文

发表时间： 2012-02-01

发表刊物： Chuan Bo Li Xue/Journal of Ship Mechanics

收录刊物： EI、PKU、ISTIC、Scopus

卷号： 16

期号： 1-2

页面范围： 181-190

ISSN号： 10077294

摘要： 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.