液氮温区下应变式位移传感系统测量性能的研究  

Study on measurement characteristics of strain type displacement transducer at liquid nitrogen temperature

作　　者：陈鹏[1,2] 戴银明[1] 张泉[1,2] 王秋良[1] 

机构地区：[1]中国科学院应用超导重点实验室,中国科学院电工研究所,北京100080 [2]中国科学院研究生院,北京100039

出　　处：《低温与超导》2009年第9期1-4,共4页Cryogenics and Superconductivity

基　　金：国家自然科学基金(10355001)资助项目

摘　　要：文中研究了一种应变式位移传感系统在室温和液氮温度下的静态传输特性。实验结果表明,该系统在液氮温区下具有良好的输出特性,系统非线性度低于1%,滞环率低于5%,其灵敏系数与温度相关,293K和77K温度下的灵敏系数分别为-0.3654mV/V/mm和-0.3886mV/V/mm。实验结果为该位移传感系统在低温环境中的应用提供了一定基础。This paper presents the investigations of a strain type displacement transducer system applied in room temperature and liquid nitrogen temperature respectively, and the static transmission properties of this system were studied. The test results show that this strain type displacement transducer system has good output properties at liquid nitrogen temperature, the non - linearity is below 1%, the hysteresis is below 5%, and the sensitivity is temperature dependent, which is -0.3654mV/V/mm and -0.3886mV/V/mm at 293K and 77K respectively. The test results can provide some basis for its further application in cryogenic environment.

关 键 词：应变式传感器 微位移 液氮温度 

分 类 号：TB651[一般工业技术—制冷工程] TP212[自动化与计算机技术—检测技术与自动化装置]