Design and experiment of a novel bell-shaped vibratory gyro

Liu, Ning; Su, Zhong; Li, Qing

doi:10.1016/j.sna.2015.10.036

Cited by 10 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The test results are shown in Fig. 15 [1]. At this time, the excitation mode frequency of the Resonator is 6930.6Hz.…”

Section: Resonator Characteristic Test a Natural Frequency Testmentioning

confidence: 99%

“…The ability of range and overload resistance of the traditional metal shell vibratory gyroscope like cylinder-shaped, cone-shaped, rotating parabolic-shaped, is restricted by its own structure. So that the traditional metal shell vibratory gyroscope cannot be used to measure angular rate under the condition of high overload, wide-range [1], [2]. The typical axisymmetric shells include cylinder shell, hemisphere shell, paraboloidal shell and conical shell.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research on Eigenvalue Analysis Method in Multi-Surface Metal Shell Vibratory Gyro

Liu

2019

IEEE Access

Self Cite

View full text Add to dashboard Cite

The metal shell vibratory gyro is a branch of Coriolis vibratory gyro, which has the advantage of overload resistance, simplify structure, low cost, wide range and long life. This paper focuses on multi-surface metal resonator. It is important that the eigenvalue analysis of multi-surface of hemisphere, cylinder and hyperbolic. Through analysis multi-surface characteristic, it presents a novel orthogonal curvilinear coordinate used machine error factor based on the traditional coordinate, which realizes boundary linear. We analyze its natural vibration characteristics, research on basic model distribution and built mode shape function of resonator; deeply research on dynamics characteristics of resonator under the condition of angular rate input, establish dynamics equation of multi-surface fusion metal shell vibratory gyroscope based on thin shell mechanics theory of elastic mechanics, solve out the eigenvalue of the resonator, and we also analyze this eigenvalue characteristics to lay the foundation of the follow-up study of the theory of the metal shell vibratory gyroscope. We test the gyro's temperature performance on the last. Finally, we test on the metal shell vibratory gyroscope, the ranges to ±3600 • /s, zero-bias stability is 7.862 • /h (25 • C), angular random walk is 1.487 • /h 1/2 . INDEX TERMS Vibratory gyro, eigenvalue analysis, multi-surface metal shell, metal shell vibratory gyroscope.

show abstract

“…The test results are shown in Fig. 15 [1]. At this time, the excitation mode frequency of the Resonator is 6930.6Hz.…”

Section: Resonator Characteristic Test a Natural Frequency Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Eigenvalue Analysis Method in Multi-Surface Metal Shell Vibratory Gyro

Liu

2019

IEEE Access

Self Cite

View full text Add to dashboard Cite

show abstract

“…According to the installation position, existing sensors can be classified into two categories: projectile-borne sensors and non-projectile-borne sensors. Projectile-borne sensors [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] such as accelerometers, gyroscopes, geomagnetic sensors, and solar sensors are generally installed inside the body of the projectile. Schuler et al [3] proposed to use linear accelerometers to measure the spin rate of rotating objects.…”

Section: Introductionmentioning

confidence: 99%

“…The new MEMS gyroscopes usually have small volume and low cost. But their measuring ranges are often small and their long-term stability is low, the measuring error of the attitude increases over time as the linear accelerometers [6,7].…”

Section: Introductionmentioning

confidence: 99%

An Optical Attitude Measurement Method for Terminal Sensitive Projectile in Vertical Wind Tunnel Test

Yuan,

Gao,

Zhang

et al. 2023

Aerosp. Res. Commun.

View full text Add to dashboard Cite

An optical attitude (scanning angle and spin rate) measurement method for terminal sensitive projectile in vertical wind tunnel test is proposed. The principles of measuring scanning angle and spin rate simultaneously depend only on one fixed camera are presented in detail. The measurement processes, which mainly includes preparation, image acquisition, segmentation of projectile, contour extraction, and estimation of attitude, are described accordingly, and the key techniques involved in each step are expanded exactly. Moreover, the measurement errors are analyzed thoroughly. The advantages of the novel method is analyzed as follow: first, the mathematical model for calculating scanning angle of a steady-state terminal sensitive projectile is derived for the first time in literature, which makes it possible to measure scanning angle from images recorded by only a fixed camera; second, the algorithms of estimating scanning angle and spin rate depend only on the line-segments of the perspective cylinders in images are designed, which significantly improve the attitude measurement accuracy. Experiment was also conducted in laboratory to verify the novel method.

show abstract

“…In CVGs, the resonating mass acts as the main sensing element and the geometry of it can be of different shapes. Based on the resonating mass, these types of gyroscopes can be in the form of a string [ 4 ], a single beam [ 5 , 6 ], U-shaped tuning forks (two parallel beams) [ 7 , 8 , 9 ], rocking-mass gyroscope systems (two perpendicular in-plane beams) [ 10 , 11 ], a butterfly [ 12 , 13 ], disks [ 14 , 15 , 16 , 17 , 18 , 19 ], cloverleaf-type disks [ 20 ], rings [ 21 , 22 , 23 ], rings with compliant spokes [ 24 ], non-continuous double rings (called folded-beam disks) [ 25 ], disks with special forms of supporting beams (called honeycomb disks) [ 26 ], cylinders [ 27 , 28 , 29 , 30 , 31 ], cupped cylinders [ 32 ], bell-shapes [ 33 , 34 , 35 ], 3D rectangular parallelepiped gyroscopes based on special vibratory modes of solid material (e.g., thickness-shear vibrating mode) [ 36 , 37 ], pierced shallow shells [ 38 ], shallow shells [ 39 ], microbubbles (spherical caps with a radius-over-height ratio larger than one) [ 40 ], cennospheres (hollow spheres) [ 41 ], quasi-spherical forms [ 42 ], spherical shell resonator gyroscopes [ 43 , 44 ,…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in MEMS-Based 3D Hemispherical Resonator Gyroscope (HRG)—A Sensor of Choice

Ranji

Damodaran

et al. 2022

Micromachines

View full text Add to dashboard Cite

Macro-scale, hemispherical-shaped resonating gyroscopes are used in high-precision motion and navigation applications. In these gyroscopes, a 3D wine-glass, hemispherical-shaped resonating structure is used as the main sensing element. Motivated by the success of macroscale hemispherical shape gyroscopes, many microscale hemispherical-shaped resonators have been produced due to the rapid advancement in semiconductor-based microfabrication technologies. The dynamic performance of hemispherical resonators depends on the degree of symmetry, uniformity of thickness, and surface smoothness, which, in turn, depend on the type of materials and fabrication methods. The main aim of this review paper is to summarize the materials, characterization and fabrication methods reported in the literature for the fabrication of microscale hemispherical resonator gyroscopes (µHRGs). The theory behind the development of HRGs is described and advancements in the fabrication of microscale HRGs through various semiconductor-based fabrication techniques are outlined. The integration of electrodes with the hemispherical structure for electrical transduction using other materials and fabrication methods is also presented. A comparison of different materials and methods of fabrication from the point of view of device characteristics and dynamic performance is discussed. This review can help researchers in their future research and engineers to select the materials and methods for µHRG development.

show abstract

Design and experiment of a novel bell-shaped vibratory gyro

Cited by 10 publications

References 15 publications

Research on Eigenvalue Analysis Method in Multi-Surface Metal Shell Vibratory Gyro

Research on Eigenvalue Analysis Method in Multi-Surface Metal Shell Vibratory Gyro

An Optical Attitude Measurement Method for Terminal Sensitive Projectile in Vertical Wind Tunnel Test

Recent Advances in MEMS-Based 3D Hemispherical Resonator Gyroscope (HRG)—A Sensor of Choice

Contact Info

Product

Resources

About