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| 用于石英水平摆倾斜仪的静电力反馈技术 | |
| 引用本文： | 高尚华,姜沣,李际弘,薛兵,王洪体.用于石英水平摆倾斜仪的静电力反馈技术[J].地震,2020,40(1):151-158. |
| 作者姓名： | 高尚华 姜沣 李际弘 薛兵 王洪体 |
| 作者单位： | 1.中国地震局地震预测研究所, 北京 100036; 2.中电科海洋信息技术研究院有限公司, 北京 100041 |
| 基金项目： | 中国地震局地震预测研究所基本科研业务费专项(2018IEF0203, 2014IES0201, 2015IES0406); 中国大陆综合地球物理场观测仪器研发专项(Y201804); 国家自然科学基金(41404142) |
| 摘 要： | 石英水平摆倾斜仪在前兆地震观测中得到了广泛的应用, 但是仍然存在现场安装前灵敏度未知的问题。 为解决该问题, 引入静电力反馈技术, 理论推导了仪器的传递函数和灵敏度等参数, 提出了在平行金属板结构中同时实现微位移测量和静电力反馈的方法, 并进行了具体设计和调试。 实验结果显示, 样机的灵敏度测试结果与反馈模型理论计算结果一致, 表明引入静电力反馈后, 能够实现石英水平摆倾斜仪灵敏度参数的常数化。 |
| 关 键 词： | 倾斜仪 静电力反馈 差动式平板电容 灵敏度 |
| 收稿时间： | 2018-12-18 |
The Electrostatic Force Feedback Technology Used in Quartz Horizontal-Pendulum Tiltmeter |
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| GAO Shang-hua,JIANG Feng,LI Ji-hong,XUE Bing,WANG Hong-ti.The Electrostatic Force Feedback Technology Used in Quartz Horizontal-Pendulum Tiltmeter[J].Earthquake,2020,40(1):151-158. | |
| Authors: | GAO Shang-hua JIANG Feng LI Ji-hong XUE Bing WANG Hong-ti |
| Institution: | 1.Institute of Earthquake Forecasting, CEA, Beijing 100036, China; 2.CETC Ocean Information Co., LTD, Beijing 100041, China |
| Abstract: | Quartz horizontal-pendulum tiltmeter has been widely used in seismic precursory observation. However, it still has some problems, for example, the sensitivity is unknown before on-site installation. To solve this problem, we introduce electrostatic force feedback technique into the quartz horizontal pendulum tiltmeter. We derive the theoretical transfer function and sensitivity of the instrument, and propose a method to realize both micro displacement measurement and electrostatic force feedback through a set of parallel metal plate structures. Then we perform detailed design and test. The experimental result shows that the accuracy of sensitivity parameter can be guaranteed after using the electrostatic force feedback technique. |
| Keywords: | Tiltmeter Electrostatic force feedback Differential parallel metal plate capacitor Sensitivity |
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