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

Yue Ji; Mengjie Xu; Xingfei Li; Tengfei Wu; Weixiao Tuo; Jun Wu; Jiuzhi Dong

doi:10.3390/s18061921

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

Sensors (Basel). 2018 Jun 13;18(6):1921. doi: 10.3390/s18061921.

Authors

Yue Ji¹, Mengjie Xu², Xingfei Li³, Tengfei Wu⁴, Weixiao Tuo⁵, Jun Wu⁶, Jiuzhi Dong⁷

Affiliations

¹ Key Laboratory of Advanced Electrical Engineering and Energy Technology, Tianjin Polytechnic University, Tianjin 300000, China. jiyue@tju.edu.cn.
² School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230000, China. xumj@hfut.edu.cn.
³ State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300000, China. lixf@tju.edu.cn.
⁴ State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300000, China. wtf@tju.edu.cn.
⁵ State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300000, China. tuoweixiao@tju.edu.cn.
⁶ Aviation Engineering Institute, Civil Aviation University of China, Tianjin 300000, China. j_wu@cauc.edu.cn.
⁷ Advanced Mechatronics Equipment Technology Tianjin Area Major Laboratory, Tianjin Polytechnic University, Tianjin 300000, China. dongjiuzhi@hotmail.com.

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.

Keywords: Coriolis effect; angular rate sensor; low frequency expansion; magnetohydrodynamic.