体积位移传感器的研讨  

Research on Volume Displacement Sensor

作　　者：毛崎波[1] 

机构地区：[1]南昌航空大学飞行器工程学院,南昌330063

出　　处：《噪声与振动控制》2011年第3期174-178,共5页Noise and Vibration Control

基　　金：江苏省汽车工程重点实验室开放基金资助(基金编号:KJS01088)

摘　　要：以不同边界条件的振动梁为例,提出通过分部积分方法设计特定形状的PVDF薄膜测量体积位移。这种分部积分方法得到的PVDF传感器形状不但与外激励力的性质(如激励力类型、位置以及频率等)无关,而且不需要振动梁的模态信息。研究表明,可以把振动梁的边界条件分为两类,即一端固定一端任意和两端位移为零,对于每一类边界条件可以用一种特定形状PVDF传感器测量其体积位移。With the example of vibrating beam of difference boundary conditions,a new method is presented for design of volume displacement sensors using shaped PVDF film on the basis of the approach of integration by parts.The PVDF sensor＇s shape is independent of property of the excitation（the type,position and frequency,etc.）.Furthermore,the design method proposed here does not require the information of the structural mode shapes of the structures.The boundary conditions of vibrating beam can be divided into two groups：（1）one end is clamped and the other is arbitrary;（2）both ends are pin-connected.For each group of boundary condition,the volume displacement of the beam can be measured using a certain shape of PVDF sensors.

关 键 词：振动与波 体积位移 压电式传感器 分部积分 

分 类 号：TB535.1[理学—物理]