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《Crustal Deformation and Earthquake》 2000-04
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ERROR ANALYSIS OF CAPACITOR SENSOR SWING IN VS VERTICAL PENDULUM TILTMETER

Xiao Jun 1) Hu Guoqin 2) and Xie Jinfang 3) 1) Wuhan Automobile Polytech university,Wuhan 430070 2) Institute of Seismology,CSB,Wuhan 430071 3) Hubei Institute of Metrology, Wuhan 430071  
Formula of non parallel flat capacitor is inferred on the basis of Gauss Theorem. The output characteristic of capacitor sensor in VS vertical pendulum is analyzed by the formula, and it shows that output voltage is not linear with tilting angle. In terms of the tiltmeter's structure parameter, the non linear error is calculated, and the range of linear equivalence is obtained. It is shown that the linear equivalence for the non linear relationship is possible and resonable, and it can be helpful for assembling the capacitor sensor.Finally,the method of assembling the sensor appropriately and allowable error are described.
【Key Words】: vertical pendulum tiltmeter capacitor sensor error analy(
【CateGory Index】: P227
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【References】
Chinese Journal Full-text Database 1 Hits
1 Jing Hongliang 1), Zhang Yanghui 1), Guo Xiangyun 2), Gao Zhenqiang 1) and Li Jun 1) 1)Linfen Seismic Station,Shanxi Province 041000, China 2)Beijing National Earth Obeservation, Beijing 100095, China;Analysis of the VS vertical pendulum tiltmeter observations at Linfen Seismic Station[J];Seismological and Geomagnetic Observation and Research;2006-05
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1 XIAO Jun~1 Wu Yanxia~1 MO Yimin~1 HU Guoqin~2 1.Wuhan University of Technology,Wuhan,430070; 2.China Seismology Institute,Wuhan,430071;Principle and Application of VSⅡ High Precision Vertical Pendulum Tilt Meter[A];[C];2005
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