| 海洋重力仪的电容式微位移传感器正弦激励源设计 |
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| 引用本文： | 邓浩,廖成旺,邓涛,丁炜,王浩. 海洋重力仪的电容式微位移传感器正弦激励源设计[J]. 电子测量技术, 2015, 38(9): 86-88 |
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| 作者姓名： | 邓浩 廖成旺 邓涛 丁炜 王浩 |
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| 作者单位： | 中国地震局地震研究所武汉430071,中国地震局地震研究所武汉430071,中国地震局地震研究所武汉430071,中国地震局地震研究所武汉430071,中国地震局地震研究所武汉430071 |
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| 摘 要： | 介绍基于差动电容设计的电容式微位移传感器的工作原理，对检测电路的输入和输出关系进行了详尽的推导，确定使用直接数字合成技术（DDS）研制的正弦激励源电路，并运用maltab simulink进行仿真数据，结果表明，幅值稳定度可达到0.000 001 V，频率稳定性达到0.000 1 Hz，该系统解决了以往正弦电路中幅值稳定度和高频时频率稳定度差的问题，提高了海洋重力仪的观测精度。
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| 关 键 词： | 海洋重力仪 电容式微位移传感器 正弦激励源 |
Sinsoidal excitation source design of capacitive micrometer for marine gravimeter |
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| Deng Hao,Liao Chengwang,Deng Tao,Ding Wei and Wang Hao. Sinsoidal excitation source design of capacitive micrometer for marine gravimeter[J]. Electronic Measurement Technology, 2015, 38(9): 86-88 |
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| Authors: | Deng Hao Liao Chengwang Deng Tao Ding Wei Wang Hao |
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| Affiliation: | Institute of Seismology, CEA, 40 Hongshan Side Road, Wuhan 430071, China,Institute of Seismology, CEA, 40 Hongshan Side Road, Wuhan 430071, China,Institute of Seismology, CEA, 40 Hongshan Side Road, Wuhan 430071, China,Institute of Seismology, CEA, 40 Hongshan Side Road, Wuhan 430071, China and Institute of Seismology, CEA, 40 Hongshan Side Road, Wuhan 430071, China |
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| Abstract: | The principle of capacitive micrometer developed with differential capacitance is systematically introduced and computed through deriving the relationship between input and output.The sinusoidal excitation source using the Direct Digital Synthesis technology is set up in Simulink simulation system.The simulation results shows that amplitude stability and high frequenty stability achieve to 0.000 001 V and 0.000 1 Hz.It is better than past,Moreover,it has increased the precision of marine gravimeter. |
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| Keywords: | marine gravimeter capactive micrometer sinusoidal excitation source |
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