表面部分电极的含金属芯压电纤维振动传感特性研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (24) : 20-25.

论文

周桂祥1，黄晓梅2，沈辉3，边义祥1

作者信息 +

Investigations on the Vibration Sensing Behavior of Partially Coated Metal Core Piezoelectric Fiber

ZHOU Gui-xiang1，HUANG Xiao-mei2，SHEN Hui3，BIAN Yi-xiang1

Author information +

文章历史 +

摘要

含金属芯压电纤维是一种新型的压电传感器，建立了表面部分电极的含金属芯压电纤维（PMPF）的振动传感理论模型。把悬臂梁结构的纤维固定在振动源上，根据第四类压电方程，基于振动理论，推导了在其固定端受到简谐振动和冲击振动激振条件下，纤维两电极间产生的电压值；根据理论和数值仿真结果，分析了表面电极分布角度、纤维长度对产生电压的影响，及PMPF的尺寸参数对其一阶共振频率的影响。实验结果表明，在测量振动源简谐振动和冲击振动的频率和幅值时，PMPF能有较好的传感性能。

Abstract

A partially coated metal core piezoelectric fiber (PMPF) is one of the new types of piezoelectric devices for sensors. The theoretical model was derived when a cantilevered PMPF was fixed in a vibration source .When a sinusoidal vibration or impulsive vibration was applied on the fixed end of a cantilevered PMPF，the voltage of PMPF was calculated based on the piezoelectric constitutive equations and the vibration theory. The effects of structural parameters of PMPF on the first resonance frequency were studied theoretically. The contributions to the voltage of the fiber by the distribution angle of surface electrodes and the length of fiber were also analyzed. The sensing properties of the sensor were studied experimentally. The experimental results show that the sensor has a good performance on measuring the frequency and amplitude of the sinusoidal vibration and the impulsive vibration.

导出引用

周桂祥1，黄晓梅2，沈辉3，边义祥1. 表面部分电极的含金属芯压电纤维振动传感特性研究[J]. 振动与冲击, 2015, 34(24): 20-25

ZHOU Gui-xiang1，HUANG Xiao-mei2，SHEN Hui3，BIAN Yi-xiang1. Investigations on the Vibration Sensing Behavior of Partially Coated Metal Core Piezoelectric Fiber[J]. Journal of Vibration and Shock, 2015, 34(24): 20-25

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