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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Active Vibration Control of a Piezo-Bonded Laminated Composite in the Presence of Sensor Partial Debonding and Structural Delaminations
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Active Vibration Control of a Piezo-Bonded Laminated Composite in the Presence of Sensor Partial Debonding and Structural Delaminations

机译：存在传感器局部剥离和结构分层的压电粘结层合复合材料的主动振动控制

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摘要

In this paper, the active vibration control of a piezo-bonded laminated composite is investigated in the presence of sensor partial debonding and structural delamination. Improved layerwise theory, higher-order electric potential field, and the finite-element method were employed to develop an electromechanically coupled model for the two types of damage (i.e., sensor partial debonding and delamination). The developed model was numerically implemented on a single-input-multi-output (SIMO) system to demonstrate the effects of sensor partial debonding and structural delamination on the ability of a constant gain velocity feedback (CGVF) controller to attenuate vibration. The two types of damage were assessed in terms of controlled outputs of the sensors, nodal displacements, and control input signals being applied to the actuator to suppress vibrations. The obtained results showed that the sensor partial debonding and structural delamination have opposite effects on the vibration-attenuation characteristics of the CGVF controller. The presence of partial debonding in the sensor made the controller less able to suppress vibrations because of a spurious sensing signal, whereas structural delamination increased the control authority of the controller because of the loss of structural stiffness that results from structural delamination.
机译：在本文中，研究了在存在传感器局部剥离和结构分层的情况下，压电键合层压复合材料的主动振动控制。运用改进的分层理论，高阶电势场和有限元方法为两种类型的损伤（即传感器局部脱粘和分层）建立了机电耦合模型。所开发的模型在单输入多输出（SIMO）系统上进行了数字化实现，以演示传感器局部剥离和结构分层对恒定增益速度反馈（CGVF）控制器衰减振动的能力的影响。根据传感器的受控输出，节点位移和施加到致动器以抑制振动的控制输入信号评估了两种类型的损坏。所得结果表明，传感器的部分剥离和结构分层对CGVF控制器的振动衰减特性具有相反的影响。传感器中存在部分脱粘，这是由于杂散感测信号导致控制器较不能够抑制振动，而结构分层则由于结构分层导致的结构刚度损失而增加了控制器的控制权限。

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