利用ADM方法设计振动梁的体积位移传感器  

Design of the Volume Displacement Sensors of Vibrating Beam Using ADM Methods

作　　者：吴锦武[1] 谭斐[1] 毛崎波[1] 

机构地区：[1]南昌航空大学飞行器工程学院,江西南昌330063

出　　处：《压电与声光》2011年第6期906-909,共4页Piezoelectrics & Acoustooptics

基　　金：航空科学基金资助项目(20081556010);江西省自然科学基金资助项目(2008GZW0020)

摘　　要：提出了一种用来测量任意边界振动梁的体积位移传感器设计方法。利用压电材料聚偏氟乙烯(PVDF)良好的压电性能,通过基于Adomian分解(ADM)法,求出任意边界梁的结构模态形状2阶空间导数的闭环级数解,通过模态法设计出特殊形状的PVDF传感器,使PVDF输出信号为所需要的振动梁体积位移。结果表明,在有限频率范围内,基于ADM法设计任意边界条件振动梁结构的PVDF体积位移传感器是可行的。Based on the good piezoelectricity of Polyvinylidene fluoride（PVDF） material,the design method of the volume displacement sensor for measuring the arbitrary boundary vibration beam structure has been proposed in this paper.By using the Adomian decomposition method（ADM）,the closed-loop series solution of the second order spatial derivation of the structure modal shape of the arbitrary boundary beam has been found.Then the PVDF sensor with special shape has been designed by using the modal method.The output signals of the PVDF sensor are exactly the desired volume displacement of the vibrating beam.The experiment results showed that it is feasible to design the PVDF volume displacement sensor for measuring the vibration structure with the arbitrary boundary condition in a limited frequency band based on the ADM method.

关 键 词：体积位移 结构模态 压电传感器 Adomian分解方法(ADM) 

分 类 号：TM282[一般工业技术—材料科学与工程] TB535[电气工程—电工理论与新技术]