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首页> 外文期刊>Journal of aerospace engineering >Active Vibration Control of Composite Pyramidal Lattice Truss Core Sandwich Plates
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Active Vibration Control of Composite Pyramidal Lattice Truss Core Sandwich Plates

机译：复合金字塔形格子桁架芯夹芯板的主动振动控制

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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. (c) 2017 American Society of Civil Engineers.
机译：研究了带有压电致动器/传感器对的复合金字塔桁架芯夹心板的振动特性，并开发了结构系统的主动振动控制方法。面板和桁架芯全部由碳纤维增强复合材料制成。为了构建有效的控制系统，将压电材料对称地粘结在夹层板的上下表面上，以用作致动器和传感器。利用汉密尔顿原理和假设模式法建立了压电材料粘结的复合金字塔格状夹心板的运动方程。计算了复合夹层板的固有频率，并通过有限元方法对其进行了验证。负速度反馈控制方法和线性二次调节器（LQR）用于控制器设计。计算了在横向脉冲激励下具有两个不同控制器的复合夹芯板的受控振动响应。数值结果表明，所提出的主动控制方法可以有效地抑制复合锥体桁架芯夹芯板的振动，并且LQR控制比速度反馈控制所需的能量更少。 （c）2017年美国土木工程师学会。

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