摘要
通过分离式Hopkinson杆在0~200 MPa压力范围内对自制的聚偏二氟乙烯(PVDF)冲击传感器进行了动态压力标定。首先对PVDF压电薄膜的工作原理进行了概述,并对传感器工艺和参数进行了介绍,通过工艺改进提高了同批次PVDF冲击传感器的一致性,并说明了分离式Hopkinson杆动态标定实验的原理和方法;对不同批次传感器的灵敏度系数进行标定,并对同批次传感器的灵敏度系数和一致性进行标定,实验结果表明:同批次PVDF冲击传感器在0~200 MPa范围线性度高,且一致性较好,并对影响传感器一致性和线性度的因素进行了分析。
The dynamic pressure calibration experiment of the self-made polyvinylidene fluoride(PVDF)shock sensors is carried out by using the split Hopkinson bar at 0~200 MPa.At first,the working principle of the PVDF piezoelectric films is summarized,and the process and the parameters of the PVDF sensors are introduced.The consistency of the same batch of PVDF shock sensors is improved through process improvement,and the principle and the method of dynamic calibration experiment based on the split Hopkinson bar are explained.Then,the sensitivity coefficient of different batches of PVDF sensors is calibrated,at the same time,the sensitivity coefficient and the consistency of the same batch of PVDF sensors are calibrated.The experimental results show that the same batch of the PVDF shock sensors have a high linearity in the range of 0~200 MPa,so that,the consistency of the same batch of PVDF shock sensors is verified.Finally,the influence factors about the consistency and linearity of the PVDF shock sensors are analyzed.
作者
钱力
李玉欣
孙权
葛江亚
QIAN Li;LI Yuxin;SUN Quan;GE Jiangya(China Astronaut Research and Training Center,Beijing 100095,China;The 49th Research Institute of China Electronics Technology Group Corporation,Harbin 150028,China)
出处
《传感器与微系统》
CSCD
北大核心
2022年第7期33-36,共4页
Transducer and Microsystem Technologies
