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Sensors 2018, 18(6), 1921; https://doi.org/10.3390/s18061921

Error Analysis of Magnetohydrodynamic Angular Rate Sensor Combing with Coriolis Effect at Low Frequency

1
Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tianjin Polytechnic University, Tianjin 300387, China
2
School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
3
State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
4
Aviation Engineering Institute, Civil Aviation University of China, Tianjin 300300, China
5
Advanced Mechatronics Equipment Technology Tianjin Area Major Laboratory, Tianjin Polytechnic University, Tianjin 300160, China
*
Author to whom correspondence should be addressed.
Received: 15 May 2018 / Revised: 9 June 2018 / Accepted: 10 June 2018 / Published: 13 June 2018
(This article belongs to the Special Issue Inertial Sensors and Systems 2018)
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Abstract

The magnetohydrodynamic (MHD) angular rate sensor (ARS) with low noise level in ultra-wide bandwidth is developed in lasing and imaging applications, especially the line-of-sight (LOS) system. A modified MHD ARS combined with the Coriolis effect was studied in this paper to expand the sensor’s bandwidth at low frequency (<1 Hz), which is essential for precision LOS pointing and wide-bandwidth LOS jitter suppression. The model and the simulation method were constructed and a comprehensive solving method based on the magnetic and electric interaction methods was proposed. The numerical results on the Coriolis effect and the frequency response of the modified MHD ARS were detailed. In addition, according to the experimental results of the designed sensor consistent with the simulation results, an error analysis of model errors was discussed. Our study provides an error analysis method of MHD ARS combined with the Coriolis effect and offers a framework for future studies to minimize the error. View Full-Text
Keywords: magnetohydrodynamic; Coriolis effect; low frequency expansion; angular rate sensor magnetohydrodynamic; Coriolis effect; low frequency expansion; angular rate sensor
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Ji, Y.; Xu, M.; Li, X.; Wu, T.; Tuo, W.; Wu, J.; Dong, J. Error Analysis of Magnetohydrodynamic Angular Rate Sensor Combing with Coriolis Effect at Low Frequency. Sensors 2018, 18, 1921.

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