Noise Suppression Solution for Ultra-High Precision Fiber Optic Gyroscope

Liu, Bohan; Zhao, Xiaoming; Zuo, Wenlong; Chen, Xin; Hu, Liang

doi:10.1109/inertial48129.2020.9090098

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…At this time, the external input angular velocity can be obtained by monitoring the control force. The amplitudes of x-mode and y-mode are x 0 and y 0 , and the standing wave azimuth is at angle θ , x 0 = E 0 cos 2 θ , y 0 = E 0 sin 2 θ , so it is: 24,25…”

Section: The Control Methods Of Different Standing Wave Azimuthsmentioning

confidence: 99%

Researched on the bias stability of the HRG affected by the temperature and the standing wave azimuth

Zhao

Hao²,

Song

et al. 2020

Measurement and Control

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The force-to-rebalanced control mode is the main operating mechanism of the HRG, and the standing wave azimuth of the resonator points to the 0° direction. But the bias of the HRG is very sensitive to the change of external physical field environment and it is urgent to improve the bias stability. The relationship between the bias of the HRG and the standing wave azimuth is periodic. When the standing wave azimuth and the damping axis are aligned, the bias error of the HRG will be greatly reduced, and the bias stability of the HRG affected by the temperature can also be improved by changing the azimuth of standing wave. In this paper, the control algorithm and the hardware circuit of the HRG are designed to control the HRG at any standing wave azimuths. The control of the HRG in different standing wave azimuths is realized, and the system temperature experiment is carried out. The experimental results show that the bias of the HRG are significantly different at different standing wave azimuths, and the bias stability of the HRG affected by the temperature can be improved 3 times by changing the standing wave azimuth.

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Section: The Control Methods Of Different Standing Wave Azimuthsmentioning

confidence: 99%

Researched on the bias stability of the HRG affected by the temperature and the standing wave azimuth

Zhao

Hao²,

Song

et al. 2020

Measurement and Control

View full text Add to dashboard Cite

show abstract

“…AlN based sensors [181]), non-planar technologies mimicking traditional hemispherical gyroscopes (e.g. fused silica glass reblown solutions [182,183]), as well as from the miniaturization of wellestablished solutions (HRG [184] and FOG [185]). Without doubts, however, they still remain the best solution in terms of cost, size weight and power (the so-called C-SWaP parameter).…”

Section: Final Remarksmentioning

confidence: 99%

Silicon MEMS inertial sensors evolution over a quarter century

Langfelder

Bestetti

Gadola

2021

J. Micromech. Microeng.

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Silicon-based microelectromechanical systems (MEMS) inertial sensors have become ubiquitous, revolutionizing motion sensing, vibration sensing and accurate positioning in several societal fields. Driven by consumer and automotive markets, companies involved in this technological development focused mostly on low cost, miniaturization and low power consumption, somewhat sacrificing measurement accuracy. In several laboratories all over the world, however, the research toward higher-performance sensors has been going on for more than two decades, with the goal of improving two key parameters for future applications: noise density and bias stability. This review article summarizes, for silicon-based MEMS accelerometers and gyroscopes, the most relevant working principles that appeared in the scientific literature. The collection of several data about the above mentioned key figures enables tracing the roadmap for further developments in the upcoming decade.

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Noise Suppression Solution for Ultra-High Precision Fiber Optic Gyroscope

Cited by 2 publications

References 3 publications

Researched on the bias stability of the HRG affected by the temperature and the standing wave azimuth

Researched on the bias stability of the HRG affected by the temperature and the standing wave azimuth

Silicon MEMS inertial sensors evolution over a quarter century

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