Error analysis and simulation of a ground electrostatic suspended accelerometer

被引：0
|
作者：
He X. [1 ]
Li J. [1 ]
Li H. [1 ]
Han F. [1 ]
Liu Y. [1 ]
机构：
[1] Department of Precision Instruments, Tsinghua University, Beijing
来源：
Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology | 2020年 / 28卷 / 06期
关键词：
Electrostatically suspended accelerometer; Error source; PID control; Simulation;
D O I：
10.13695/j.cnki.12-1222/o3.2020.06.015
中图分类号：
学科分类号：
摘要：
In view of the urgent demand for high-precision accelerometer in the fields of aviation/navigation gravity and gravity gradient measurement, inertial navigation and other fields, a high-precision three-dimensional electrostatic suspended accelerometer(ESA) scheme suitable for ground application environment is proposed. The test mass adopts a hollow thin-walled cylinder with a thin flange fixed in the center, and the detection and force-added electrodes are arranged on the inner and outer sides of the cylinder and both sides of the flange plate. The error sources that affect the performance of the ESA and their mechanism are studied. Based on the MATLAB/Simulink, a three-dimensional model of the ESA system is established, and the control parameters of the accelerometer are designed. The influence of typical error sources on the scale factor are compared when the disk electrode and cylindrical electrode are used as the measuring electrode of the displacement and attitude detection. The simulation results show that the stability of scale factor can reach 10-9V/g by using cylindrical electrode, which is one order of magnitude higher than that of the disk electrode. Therefore, cylindrical electrode is selected as the measurement electrode for the test mass displacement and attitude detection in engineering. © 2020, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.
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页码：794 / 801
页数：7
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