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首页> 外文会议>International conference on adaptive structures and technologies >A self-sensing actuator using piezoelectric films with different thickness for vibration control of curved structures (proposition of principal concepts and applications to cantilever and circular ring)
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A self-sensing actuator using piezoelectric films with different thickness for vibration control of curved structures (proposition of principal concepts and applications to cantilever and circular ring)

机译：具有不同厚度的压电薄膜的自感应致动器，用于弯曲结构的振动控制（主要概念和应用于悬臂和圆环的主题）

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摘要

A self-sensing actuator using piezoelectric two films with different thickness and area, which are closely installed on one surface of general curved structures and are treated as two capacitors in the active RC bridge circuit, is proposed from the view-point of simplification of hardware aspects of devices toward the realization of smart structures. In the first half of this paper, it is implied that this device is effective in the following points; 1) compensation of ME noises, 2) ability of obtaining high feedback gain and enough control power and 3) compensation of temprature for pyroelectric effect. Vibration control effects are estimated by theoretical analyses of free vibration response of a cantilever which is an example of fundamental flexible structures, and the guideline for constructing control circuit is shown. Then, the validity of proposed self-sensing actuator scheme is verified by conducting the experiment of free vibration response of a cantilever. In the second half of this paper, application of the proposed method to the vibration control of curved structures is investigated. A flexible circular ring is treated as an example of curved structures and fundamental equations of the circular ring with the proposed self-sensing actuator are derived and vibration control effects are estimated by numerical analysis. Then, the vibration control experiment is performed using an aluminum circular ring, and it is shown that the lowest vibration mode is efficiently controlled.
机译：使用具有不同厚度和面积的压电两薄膜的自感应致动器，该致动器在一般弯曲结构的一个表面上紧密地安装在有源RC桥电路中的两个电容器，从而从硬件的简化方面提出用于实现智能结构的设备的各个方面。在本文的前半部分，暗示该装置在以下几点中有效; 1）补偿我的噪音，2）获得高反馈增益和足够的控制功率和3）对热电效应的温度补偿。通过悬臂的自由振动响应的理论分析估计振动控制效果，该悬臂是基本柔性结构的一个例子，并且示出了构建控制电路的指导。然后，通过进行悬臂的自由振动响应的实验来验证所提出的自感应执行器方案的有效性。在本文的下半部分，研究了所提出的方法对弯曲结构的振动控制的应用。将柔性圆环被处理为作为弯曲结构的示例，并且通过数值分析来估计具有所提出的自感应致动器的圆环的弯曲结构的基本方程和振动控制效果。然后，使用铝圆环进行振动控制实验，并示出了有效地控制最低振动模式。

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