用于冲击加速度测量的机械滤波器设计  

Design of mechanical filter for shock acceleration measuring

作　　者：陈辉[1] 江楠 CHEN Hui;JIANG Nan(China Ship Scientific Research Center,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082

出　　处：《中国测试》2018年第10期107-114,共8页China Measurement & Test

基　　金：国防基础科研计划资助项目(JCKY2016207C021)

摘　　要：强冲击脉冲结束后压电式加速度计往往会出现"零漂"现象,严重影响船舶设备冲击环境测量在中低频段的准确性。为压电式加速度计加装机械滤波器是减小"零漂"影响非常有效的手段,为此该文设计一种结构简单的机械滤波器,并基于两自由度系统冲击响应原理给出滤波器的性能设计方法。在此基础上,对安装机械滤波器的加速度计开展一系列的性能检测工作,结果显示机械滤波器的性能能够满足冲击试验的要求。Under strong shock loads,piezoelectric accelerometers will be“zero drift”.This phenomenon will reduce validity of shock environment in low-mid frequency of ship equipments seriously.Mechanical filter can reduce the influence of“zero drift”both home and abroad.For this reason,a simple structure mechanical filter is designed independent.The estimation method of mechanical filter’s performance parameter is brought forward based on two-degree-of-freedom system.On this basis,a series of tests about accelerometers with mechanical filter are performed.The results show that the mechanical filter fit shock tests in lab.

关 键 词：机械滤波器 冲击加速度 加速度计 性能检测 

分 类 号：U610.30[交通运输工程—船舶及航道工程]