振动梁局部体积位移传感器的优化布置  

Optimization of local volume displacement sensor placement for vibrating beam

作　　者：李维斌[1] 吴锦武[2] 吴春笃[1] 

机构地区：[1]江苏大学环境学院,江苏镇江212013 [2]南昌航空大学航空与机械工程学院,江西南昌330063

出　　处：《江苏大学学报（自然科学版）》2009年第4期419-423,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：航空科技创新基金资助项目(07A56001);江西省教育厅2008年度科技计划项目(GJJ08218)

摘　　要：以振动梁为研究对象,提出运用局部体积位移传感器来测量振动结构局部体积位移的方法.运用分部积分,设计特殊形状的PVDF压电薄膜,使PVDF输出信号为所需要的振动结构局部体积位移.结果表明:这种局部体积位移传感器形状与振动梁的边界条件无关,而且与激励力性质(类型,位置和频率范围)以及振动结构本身的材料特性无关,只与PVDF传感器在振动梁上的局部位置有关;用该传感器测量振动结构局部体积位移是可行的.With the vibrating beam as an example, a new local volume displacement sensor was used to measure the local volume displacement of vibrating structure. Based on the integration in parts approach, the PVDF film of particular shape was designed, in order to receive the specific local volume displace- ment of vibrating structure. The results show that the optimal PVDF sensor shape is independent of property of the excitation （the type, position and frequency） , and independent of material characteristics of vibrating plate, but dependent of the sensor＇s location on the beam. It is feasible to measure the local volume displacement of vibrating structure with the new sensor.

关 键 词：体积测量 压电材料 阵列式传感器 误差分析 振动控制 

分 类 号：TB535.1[理学—物理]