Dual-axis rotation modulation technology based on high precision MEMS-INS

WANG Siyuan; LIU Haiqiao; LUO Shibin

doi:10.13873/J.1000-9787(2021)02-0008-04

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Dual-axis rotation modulation technology based on high precision MEMS-INS

更新时间：2025-09-11

- Dual-axis rotation modulation technology based on high precision MEMS-INS
- Issue 2, Pages: 8-11(2021)
- 作者机构：
  
  1. 中南大学航空航天学院
  2. 中南大学自动化学院
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2021)02-0008-04
  CLC： TN96;TH-39
- Published：2021
- 稿件说明：
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WANG Siyuan, LIU Haiqiao, LUO Shibin. Dual-axis rotation modulation technology based on high precision MEMS-INS[J]. 2021, (2): 8-11.
DOI：

WANG Siyuan, LIU Haiqiao, LUO Shibin. Dual-axis rotation modulation technology based on high precision MEMS-INS[J]. 2021, (2): 8-11. DOI： 10.13873/J.1000-9787(2021)02-0008-04.

摘要

针对微机电系统(MEMS)惯性传感器常值漂移误差、标度因数误差以及标度因数对称性误差较大的问题

引入一种误差调制方法

即旋转调制(RM)。为补偿3个轴向上的传感器误差

采用一种双轴十六位置连续旋转方法

并与单轴正反连续旋转方法对误差的调制效果进行对比。仿真结果表明:双轴十六位置连续旋转相对于单轴两位置连续旋转具有更好的调制效果

720 s内惯性导航系统的速度精度提高了2倍

位置精度提高了近3倍。

Abstract

Aiming at the problem of big constant drift error

scale factor error and symmetry error of micro-electromechanical system（ MEMS） inertial sensors

in order to improve the navigation accuracy of the system

an error modulation method

rotation modulation（ RM） is introduced. In order to compensate the three axis sensors errors

a dual-axis sixteen-position continuous rotation scheme is proposed

and the modulation effect of the error is compared with the single-axis forward-reverse continuous rotation scheme

these two schemes are analyzed and verified by simulation. The simulation results show that the dual-axis sixteen-position continuous rotation scheme has better modulation effect than the single-axis rotation scheme. The velocity accuracy is improved by 2 times and the position precision is improved by nearly 3 times in 720 s.

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