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基于钼酸铅晶体电致旋光效应的光学电压传感器 被引量:7

Optical Voltage Sensor Based on the Electrogyratory Effect in Lead Molybdate Crystal
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摘要 研究了基于晶体电致旋光效应的光学电压传感器,电压传感元件采用了国产钼酸铅(PbMoO4)晶体。光学电压传感头仅由两块棱镜偏振器和一块钼酸铅晶体组成。实验结果表明此电压传感器具有较大的线性测量范围,例如对50-5000V工频电压测量的非线性误差低于0.2%;当测量100kHz的高频电压并利用锁相放大器检测传感信号时,最小可测量电压幅值为0.5V。此外,实验测量了所用钼酸铅晶体在635nm光波长及工频电压作用时的电致旋光系数,其数值为1.03pm/V。 "Based on electrogyratory effect, an optical voltage sensor is experimentally investigated by using an electrogyratory crystal as voltage-sensing element. The optical sensing unit only consists of two prism polarizers and a block of lead molybdate crystal. The 50 Hz ac voltage from 50 V to 5 000 V was measured with nonlinear error less than 0.2%. The ac voltage within 10 V and with frequency of 100 kHz was also measured by use of the voltage sensor associated with a lock-in amplifier, and the minimum measurable voltage was 0. 5 V. " In addition, the electrogyratory coefficient of the used lead molybdate crystal was also measured, and its value was 1.03 pm/V for the light wavelength of 635 nm and 50 Hz ac modulating voltage.
出处 《传感技术学报》 CAS CSCD 北大核心 2008年第8期1343-1347,共5页 Chinese Journal of Sensors and Actuators
基金 北京航空航天大学引进人才基金资助项目(#203137)
关键词 光学电压传感器 电致旋光效应 电致旋光系数 optical voltage sensor electrogyration effect electrogyratory coefficient
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参考文献14

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