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Journal of Micro/Nanolithography, MEMS, and MOEMS

Design and study of error compensation method for improving the precision of angular rates of nongyro inertial measurement units
Author(s): Mingli Ding; Tingwei Liang; Jintao Yu; Qi Wang
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Paper Abstract

Nongyro inertial measurement units (NGIMUs) use only microelectromechanical system or microaccelerometers replacing gyroscopes to compute the motion of a moving body. The angular information of NGIMU can be acquired from linear acceleration information. In this work, a new nine-accelerometer configuration of NGIMU is presented with a built experiment system. To improve the precision of the estimated angular rate, a compensation algorithm is used to get the correct accelerometer output. It is provided under the existence of the accelerometer mounting error, which seriously affects NGIMU performance. The simulation study of the proposed methods for estimating the angular rate is investigated based on the present NGIMU configuration. Additionally, the experiment verification using the two-axis turntable to measure the angular rate is also performed. The simulation and experiment results show the feasibility of the configuration and methods. In the experiment, the relative error of this nine-accelerometer configuration is around 1% when the measured angular rate ranges from 0 to 200 deg/s.

Paper Details

Date Published: 1 July 2010
PDF: 10 pages
J. Micro/Nanolith. MEMS MOEMS 9(3) 033009 doi: 10.1117/1.3481145
Published in: Journal of Micro/Nanolithography, MEMS, and MOEMS Volume 9, Issue 3
Show Author Affiliations
Mingli Ding, Harbin Institute of Technology (China)
Tingwei Liang, Harbin Institute of Technology (China)
Jintao Yu, Harbin Univ. of Commerce (China)
Qi Wang, Harbin Institute of Technology (China)

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