Articles

Design and study of error compensation method for improving the precision of angular rates of nongyro inertial measurement units

[+] Author Affiliations
Mingli Ding

Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin 150001 China

Tingwei Liang

Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin 150001 China

Jintao Yu

Harbin University of Commerce, No. 1, Xuehai Street, Songbei District, Harbin 150028 China

Qi Wang

Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin 150001 China

J. Micro/Nanolith. MEMS MOEMS. 9(3), 033009 (August 18, 2010). doi:10.1117/1.3481145
History: Received April 04, 2010; Revised July 14, 2010; Accepted July 14, 2010; Published August 18, 2010; Online August 18, 2010
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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 0to200degs.

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© 2010 Society of Photo-Optical Instrumentation Engineers

Citation

Mingli Ding ; Tingwei Liang ; Jintao Yu and Qi Wang
"Design and study of error compensation method for improving the precision of angular rates of nongyro inertial measurement units", J. Micro/Nanolith. MEMS MOEMS. 9(3), 033009 (August 18, 2010). ; http://dx.doi.org/10.1117/1.3481145


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