Research on Field Calibration Method for MEMS Accelerometer Based on Support Ellipsoid Fitting

被引：0
|
作者：
Zhou Q. [1 ]
Yao M. [1 ]
Shen X. [1 ]
机构：
[1] Rocket Force University of Engineering, Xi'an, 710025, Shaanxi
来源：
Binggong Xuebao/Acta Armamentarii | 2020年 / 41卷 / 01期
关键词：
Ellipsoid fitting; Error compensation; Field calibration; Micro-electro-mechanical system accelerometer; Support degree;
D O I：
10.3969/j.issn.1000-1093.2020.01.008
中图分类号：
学科分类号：
摘要：
In order to solve the problem that the zero drift error, scale factor error and cross-coupling error of accelerometer in the micro-electro mechanical system change with time, a calibration method based on the support degree ellipsoid fitting is proposed. The proposed method can be used easily, quickly and efficiently to calibrate the accelerometer outdoor. Based on the traditional ellipsoid fitting method, this method combines the support method with the ellipsoid method. An ellipsoid constraint model and the support matrix are established for calibrating the errors of the micro-electro-mechanical system (MEMS) accelerometer. Finally, the output of MEMS accelerometer is compensated by using an error compensation equation. It is proved by experiments that the proposed method can be used for calibrating without precision calibration equipment, and its calibration accuracy is twice of the traditional ellipsoid fitting method. © 2020, Editorial Board of Acta Armamentarii. All right reserved.
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页码：68 / 74
页数：6
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