A Novel Model for Fully Closed-Loop System of Hemispherical Resonator Gyroscope Under Force-to-Rebalance Mode

Xu, Zeyuan; Xi, Bin; Yi, Guoxing; Wang, Danwei

doi:10.1109/tim.2020.3005282

Cited by 52 publications

(8 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, the production of HRG requires labor-intensive and complex balancing of a hemispherical resonator using equipment that costs more than $1 million. This significantly limits the possibility of mass production of navigation systems at HRG [1], [2]. To date, to ensure high-quality operation of the HRG, it is necessary to balance the resonator and then precisely match the spatial position of the reading electrodes with the resonator's own axes [3].…”

Section: Introductionmentioning

confidence: 99%

Method for measuring voltages in channels of a hemispherical resonator gyroscope with an arbitrary orientation axes

Parkhomey

Boiko²,

Zeniv³

et al. 2023

IJEECS

View full text Add to dashboard Cite

<span>The article deals with issues related to solid wave gyroscopes, which are used as a sensor in inertial navigation systems. The article considers a variant of solving problem, when oscillations of the resonator are excited in directions that coincide with their own axes, oriented a priori is unknown. The main contribution this article is the method is proposed for measuring signal amplitudes in virtual main and quadrature channels, the orientation of which does not coincide with the orientation of the signal pickup electrodes. This is achieved by modeling algorithms for measuring the slope of the resonator's own axes and signal amplitudes in virtual channels are evaluation. In order to verify the adequacy of the proposed models simplified calculation formulas for programming microcontrollers are presented. An estimate of the error due to the use of simplified formulas is made. It is assumed that the use of this method will reduce the requirements for the quality of balancing the resonators of gyroscopes. The findings will be useful for mass production of navigation systems with gyroscopes, which have a small drift and are capable of experiencing large shock linear accelerations, for example, in underground inclined drilling, and in meteorological rockets.</span>

show abstract

Section: Introductionmentioning

confidence: 99%

Method for measuring voltages in channels of a hemispherical resonator gyroscope with an arbitrary orientation axes

Parkhomey

Boiko²,

Zeniv³

et al. 2023

IJEECS

View full text Add to dashboard Cite

show abstract

“…Inversely, the Coriolis force can be calculated by measuring the change in the vibration pattern of the resonator. In order to improve the performance of HRG, many studies have been actively performed, mainly with the resonator itself [2][3][4][5][6], the driving method [7][8][9][10][11][12], and the signal processing [13][14][15][16][17]. However, the research on the vibration measurement method has been relatively insufficient.…”

Section: Introductionmentioning

confidence: 99%

Implementation of Hemispherical Resonator Gyroscope with 3 × 3 Optical Interferometers for Analysis of Resonator Asymmetry

Kim

Cho

Lee

et al. 2022

Sensors

View full text Add to dashboard Cite

A hemispherical resonator gyroscope (HRG) has been implemented by using a consumer wineglass as the resonator and 3 × 3 optical interferometers as the detectors. The poorness of the off-the-shelf wineglass as the resonator can be overcome by the high performance of the optical interferometer. The effects of asymmetries in stiffness and absorption of the resonator are analyzed theoretically and confirmed experimentally. We prove that the trace of the amplitude ratio of two n = 2 fundamental resonant modes of the resonator follows a straight line in a complex plane. By utilizing the straightness of the ratio and the high performance of the optical interferometer, we extract four real constant parameters characterizing the HRG system. Experimentally, by using a resonator having an average resonance frequency of 444 Hz and Q value of 1477.2, it was possible to measure the Coriolis force at the level of industrial grade. The bias stability was measured as small as 2.093°/h.

show abstract

“…Microelectromechanical system (MEMS) Coriolis vibratory gyroscopes (CVGs) have been revealed enormous potential for high-end applications, even for the applications of near-navigation grade [1][2][3][4][5]. Among the MEMS gyroscopes with the top performances, the MEMS CVGs with axisymmetric resonators, for instance, ring [6] or disk [7][8][9], hemispherical [10][11][12], and quad-mass [13][14][15] resonators, are particularly appealing by virtue of their angular rate-integrating ability, which offers benefits of high dynamics, wide ranges, and shock and vibration resistance. Besides, the symmetry in the structure of the resonators provides possibilities of various in-run calibration and compensation algorithms in the control system [16][17][18][19], further improving the bias and the scale factor performances for the gyroscopes.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Modal Frequencies and Orientation of Axisymmetric Resonators in Coriolis Vibratory Gyroscopes

et al. 2021

View full text Add to dashboard Cite

This paper presents the characterization of the modal frequencies and the modal orientation of the axisymmetric resonators in Coriolis vibratory gyroscopes based on the approaches of the frequency sweep and the ring down. The modal frequencies and the orientation of the stiffness axis are the key parameters for the mechanical correction of the stiffness imperfections. The frequency sweep method utilizes the zero and the poles in the magnitude-frequency responses of the two-dimensional transfer function to extract the modal orientation information within the frequency domain. The ring down method makes use of the peak and the valley values of the beat signals at the readout electrodes to obtain the modal orientation and the coefficient of the nonlinear stiffness directly within the time domain. The proposed approaches were verified via a silicon ring resonator designed for gyroscopic sensing and the modal information from the experiments exhibited a good agreement between the methods of the frequency sweep and the ring down.

show abstract

A Novel Model for Fully Closed-Loop System of Hemispherical Resonator Gyroscope Under Force-to-Rebalance Mode

Cited by 52 publications

References 32 publications

Method for measuring voltages in channels of a hemispherical resonator gyroscope with an arbitrary orientation axes

Method for measuring voltages in channels of a hemispherical resonator gyroscope with an arbitrary orientation axes

Implementation of Hemispherical Resonator Gyroscope with 3 × 3 Optical Interferometers for Analysis of Resonator Asymmetry

Characterization of Modal Frequencies and Orientation of Axisymmetric Resonators in Coriolis Vibratory Gyroscopes

Contact Info

Product

Resources

About