桁架
夹芯板
振动
执行机构
振动控制
复合数
主动振动控制
材料科学
压电
结构工程
线性二次调节器
压电传感器
复合材料
控制理论(社会学)
工程类
最优控制
声学
物理
计算机科学
数学
数学优化
电气工程
控制(管理)
人工智能
作者
Meng Li,Fengming Li,Xingjian Jing
出处
期刊:Journal of Aerospace Engineering
[American Society of Civil Engineers]
日期:2017-12-09
卷期号:31 (2)
被引量:24
标识
DOI:10.1061/(asce)as.1943-5525.0000817
摘要
The vibration characteristics of composite pyramidal truss core sandwich plates with piezoelectric actuator/sensor pairs were investigated, and the active vibration control methods of the structural system were also developed. The face sheets and truss core were all made of carbon fiber–reinforced composites. In order to construct an effective control system, the piezoelectric materials were symmetrically bonded on the top and bottom surfaces of the sandwich plate to act as the actuators and sensors. Hamilton's principle with the assumed mode method was used to establish the equation of motion of the composite pyramidal lattice sandwich plate bonded with piezoelectric materials. The natural frequencies of the composite sandwich panel were calculated and validated by the finite-element method. A negative velocity feedback control method and a linear quadratic regulator (LQR) were employed in the controller design. The controlled vibration responses of the composite sandwich panel with the two different controllers under transverse impulse excitation were calculated. Numerical results show that the proposed active control methods can effectively suppress the vibration of the composite pyramidal truss core sandwich panel, and that LQR control requires less energy than velocity feedback control.
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