PVDF压力传感器标定及在激光推进实验中的应用  

Calibration of a PVDF sensor and its application to laser propulsion experiments

作　　者：崔村燕[1,2] 洪延姬[2] 李修乾[2] 何国强[1] 

机构地区：[1]西北工业大学航天学院,陕西西安710072 [2]装备指挥技术学院基础部,北京101416

出　　处：《爆炸与冲击》2011年第1期31-35,共5页Explosion and Shock Waves

基　　金：国家自然科学基金项目(10672184)~~

摘　　要：详细介绍了PVDF压力传感器的设计方法和2个等效测量电路。利用SHPB系统对PVDF压力传感器的动态灵敏度进行了标定,结果显示,不同并联电阻对于PVDF压力传感器动态灵敏度的影响不大,但对脉冲推力上升时间的测量结果有影响,选择较小的并联电阻可以获得更逼真的测试信号。A polyvinylidene fluoride（PVDF） pressure sensor was designed and two equivalent measurement circuits were introduced.The dynamic sensitivity of the PVDF pressure sensor was calibrated by using a split Hopkinson pressure bar system.Results shows that the dynamic sensitivity coefficients have only small discrepancy in the cases of different parallel resistances and all the calibration results are very close to that given by manufacture.But the larger the parallel resistance,the longer the rise time of the pulsed thrust gained by the test system.Obviously,selecting smaller parallel resistances is an effective way to obtain more authentic signals.

关 键 词：爆炸力学 动态灵敏度 并联电阻 PVDF压力传感器 激光推进 SHPB系统 

分 类 号：O347.4[理学—固体力学]