Experimental research on array piezoelectric modal sensor

ZHU Qiao; MAO Qi-bo

doi:10.13873/j.1000-97872014.02.036

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Experimental research on array piezoelectric modal sensor

更新时间：2025-09-11

- Experimental research on array piezoelectric modal sensor
- Vol. 33, Issue 2, Pages: 61-64+69(2014)
- 作者机构：
  
  南昌航空大学飞行器工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872014.02.036
  CLC： TP212
- Published：2014
- 稿件说明：
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[1]朱峤,毛崎波.阵列式压电模态传感器的实验研究[J].传感器与微系统,2014,33(02):61-64+69.

ZHU Qiao, MAO Qi-bo. Experimental research on array piezoelectric modal sensor[J]. 2014, 33(2): 61-64+69.
[1]朱峤,毛崎波.阵列式压电模态传感器的实验研究[J].传感器与微系统,2014,33(02):61-64+69. DOI： 10.13873/j.1000-97872014.02.036.

ZHU Qiao, MAO Qi-bo. Experimental research on array piezoelectric modal sensor[J]. 2014, 33(2): 61-64+69. DOI： 10.13873/j.1000-97872014.02.036.

摘要

通过一组阵列式压电薄膜

设计未知边界条件下振动梁的模态传感器。在梁表面均匀布置一组具有相同形状的矩形聚偏氟乙烯（PVDF）薄膜

通过测量PVDF输出与激励力之间的频率响应函数

利用伪逆方法设计这组PVDF的加权系数

从而实现对结构模态坐标的测量。实验研究表明:该方法设计的模态传感器具有良好的滤波效果

非目标阶模态坐标峰值与目标阶相比

下降了12 dB以上

并且不需要预先知道结构的边界条件或者模态信息。进一步讨论了当振动梁的边界条件发生微小扰动时所设计模态传感器的鲁棒性。

Abstract

With an example of a vibrating beam under unknown boundary condition

a novel approach for the design of the modal sensor using a group of array piezoelectric film is proposed.An array of rectangular segment of PVDF film with the same shapes equally attached on the surface of the beam are taken as sensors.Through measuring frequency response functions between PVDF output and excitation force

design weights coefficient of PVDF group by the pseudo-inverse method so that to realize measurement of structure modal coordinates.Experimental results show that the modal sensor designed by the proposed method has a good effect on filtering.Compared with the targeted modal coordinate

more than 12 dB reduction is obtained

and it does not need to know boundary condition or modal information in advance.Furthermore

robustness of the designed modal sensor while boundary condition of vibrating beam occurs small perturbation is discussed.

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references

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压电阵列式模态传感器的实验研究 [J]. 毛崎波. 仪表技术与传感器 . 2011(09)

利用高分子压电薄膜设计声辐射模态传感器 [J]. 毛崎波,徐柏龄. 声学学报 . 2003(03)

通过压电式传感器进行简支梁声辐射有源控制 [J]. 毛崎波,姜哲. 声学学报 . 2001(06)

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