Design, analysis and experiment of a novel ring vibratory gyroscope

Tao, Yi; Wu, Xuezhong; Xiao, Dingbang; Wu, Yulie; Cui, Hongjuan; Xi, Xiang; Zhu, Boqing

doi:10.1016/j.sna.2011.04.039

Cited by 47 publications

(33 citation statements)

References 15 publications

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“…Its resonator structure and working principle are similar to those reported in [21,22,23,24,25]. The resonator is a suspended ring that works in its fundamental flexural mode.…”

Section: Experiments and Discussionmentioning

confidence: 70%

A Stepped Frequency Sweeping Method for Nonlinearity Measurement of Microresonators

Wei

Dong

Huang

2016

Sensors

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In order to measure the nonlinear features of micromechanical resonators, a free damped oscillation method based on stair-stepped frequency sinusoidal pulse excitation is investigated. In the vicinity of the resonant frequency, a frequency stepping sinusoidal pulse sequence is employed as the excitation signal. A set of free vibration response signals, containing different degrees of nonlinear dynamical characteristics, are obtained. The amplitude-frequency curves of the resonator are acquired from the forced vibration signals. Together with a singular spectrum analysis algorithm, the instantaneous amplitudes and instantaneous frequencies are extracted by a Hilbert transform from the free vibration signals. The calculated Backbone curves, and frequency response function (FRF) curves are distinct and can be used to characterize the nonlinear dynamics of the resonator. Taking a Duffing system as an example, numerical simulations are carried out for free vibration response signals in cases of different signal-to-noise ratios (SNRs). The results show that this method displays better anti-noise performance than FREEVIB. A vibrating ring microgyroscope is experimentally tested. The obtained Backbone and FRF curves agree with those obtained by the traditional frequency sweeping method. As a test technique, the proposed method can also be used to for experimentally testing the dynamic characteristics of other types of micromechanical resonators.

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“…Its resonator structure and working principle are similar to those reported in [21,22,23,24,25]. The resonator is a suspended ring that works in its fundamental flexural mode.…”

Section: Experiments and Discussionmentioning

confidence: 70%

A Stepped Frequency Sweeping Method for Nonlinearity Measurement of Microresonators

Wei

Dong

Huang

2016

Sensors

View full text Add to dashboard Cite

show abstract

“…By using the nite-element model presented in this paper, the mode shapes of the ring gyroscope are obtained. In the previous researches on the vibrating ring gyroscopes [12,41], the mode shape of the system is considered similar to that of single ring [35] (i.e., sin(n)), while Figure 5 shows that the mode shape of the gyroscope is slightly di erent from the assumed mode shapes presented in the literature. This nding reveals that in order to obtain highly accurate behavior and response of the vibrating ring gyroscope, the presented mode shape should be utilized.…”

Section: Resultsmentioning

confidence: 99%

“…Di erent types of vibrating ring gyroscopes have been manufactured and tested by researchers [11][12][13]. The rst generation of the vibrating ring gyroscopes was designed by Putty [14].…”

Section: Introductionmentioning

confidence: 99%

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Vibrational characteristics of size dependent vibrating ring gyroscope

Karimzadeh

Ahmadian

2018

Scientia Iranica

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Abstract. In this paper, vibrational analysis of a size-dependent micro-ring gyroscope under electrostatic DC voltage is performed. Governing equations of size-dependent micro rings and corresponding nite-element formulation of circular micro ring along with eight half circular sti eners embedded inside the ring are derived based on the modi ed couple stress theory, Hamilton's principle, and in-extensionality approximation. Frequency analysis indicates that the obtained mode shape of the ring gyroscope is slightly di erent from the one previously reported in the literature. Size-dependent behavior of the gyroscope is studied, and related ndings con rm the gap between classic and non-classic natural frequencies and pull-in voltage when the ring thickness is in order of material length scale parameter. Two di erent orientations for the actuation electrodes of the micro-ring gyroscope are implemented, and the e ect of these orientations on the static de ection, pull-in instability, and device frequencies in the sense (45 direction) and drive (0 direction) directions is investigated. Results reveal that the pull-in phenomena take place under lower voltages for 0 and 45 orientation of electrodes in comparison with 0 orientation; frequency split occurs in higher voltages for 0 and 45 orientation. A comparison between nite-element numerical natural frequencies of single ring and previously obtained analytical ones shows excellent agreement.

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“…The hemispherical resonator gyroscope (HRG) was developed rapidly in Delco, Litton, and Northrop Grumman Co. [5], which has achieved inertial navigation performance levels and been used for spacecraft stabilization, precision pointing, aircraft navigation and strategic accuracy systems. Innalabs Holding manufactured the Coriolis vibratory gyroscope (CVG) with a metallic cylindrical resonator (tactical grade) [6], and Watson industries designed the vibrating structure gyroscope (VSG) with a piezoceramic cupped structure (rate grade) [7].…”

Section: Introductionmentioning

confidence: 99%

Research on Bell-Shaped Vibratory Angular Rate Gyro’s Character of Resonator

et al. 2013

Sensors

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Bell-shaped vibratory angular rate gyro (abbreviated as BVG) is a new type Coriolis vibratory gyro that was inspired by Chinese traditional clocks. The resonator fuses based on a variable thickness axisymmetric multicurved surface shell. Its characteristics can directly influence the performance of BVG. The BVG structure not only has capabilities of bearing high overload, high impact and, compared with the tuning fork, vibrating beam, shell and a comb structure, but also a higher frequency to overcome the influence of the disturbance of the exterior environment than the same sized hemispherical resonator gyroscope (HRG) and the traditional cylinder vibratory gyroscope. It can be widely applied in high dynamic low precision angular rate measurement occasions. The main work is as follows: the issue mainly analyzes the structure and basic principle, and investigates the bell-shaped resonator's mathematical model. The reasonable structural parameters are obtained from finite element analysis and an intelligent platform. Using the current solid vibration gyro theory analyzes the structural characteristics and principles of BVG. The bell-shaped resonator is simplified as a paraboloid of the revolution mechanical model, which has a fixed closed end and a free opened end. It obtains the natural frequency and vibration modes based on the theory of elasticity. The structural parameters are obtained from the orthogonal method by the research on the structural parameters of the resonator analysis. It obtains the modal analysis, stress analysis and impact analysis with the chosen parameters. Finally, using the turntable experiment verifies the gyro effect of the BVG.

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Design, analysis and experiment of a novel ring vibratory gyroscope

Cited by 47 publications

References 15 publications

A Stepped Frequency Sweeping Method for Nonlinearity Measurement of Microresonators

A Stepped Frequency Sweeping Method for Nonlinearity Measurement of Microresonators

Vibrational characteristics of size dependent vibrating ring gyroscope

Research on Bell-Shaped Vibratory Angular Rate Gyro’s Character of Resonator

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