Virtual Rate-Table Method for Characterization of Microgyroscopes

Cui, Jian; He, Chunhua; Yang, Zhenchuan; Ding, Haitao; Guo, Ziwei; Hao, Yue; Yan, Guizhen

doi:10.1109/jsen.2012.2185489

Cited by 17 publications

(6 citation statements)

References 12 publications

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“…This is based on the fact that the phase response of an ideal gyroscope to the Coriolis force is mathematically related to the phase response of the gyroscope to an AM excitation [20,21]. A similar observation was made in [22]. However, a second innovative aspect of the architecture proposed herein is that it relies on the gyroscope phase response for both sensing and calibration, thereby making it possible to use much of the control and signal processing electronics both for sensing and for calibration.…”

Section: Introductionmentioning

confidence: 64%

Gyroscope sensing and self-calibration architecture based on signal phase shift

Casinovi

Norouzpour-Shirazi

Dalal

et al. 2016

Sensors and Actuators A: Physical

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Section: Introductionmentioning

confidence: 64%

Gyroscope sensing and self-calibration architecture based on signal phase shift

Casinovi

Norouzpour-Shirazi

Dalal

et al. 2016

Sensors and Actuators A: Physical

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“…The frequency response of the micro-gyroscope was measured by using virtual rate table method which is described in [ 21 ] in detail. Figure 15a illustrates the block diagram of the control and sense circuits for the experiment.…”

Section: Resultsmentioning

confidence: 99%

Analysis of Frequency Response and Scale-Factor of Tuning Fork Micro-Gyroscope Operating at Atmospheric Pressure

Ding

et al. 2015

Sensors

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This paper presents a study of the frequency response and the scale-factor of a tuning fork micro-gyroscope operating at atmospheric pressure in the presence of an interference sense mode by utilizing the approximate transfer function. The optimal demodulation phase (ODP), which is always ignored in vacuum packaged micro-gyroscopes but quite important in gyroscopes operating at atmospheric pressure, is obtained through the transfer function of the sense mode, including the primary mode and the interference mode. The approximate transfer function of the micro-gyroscope is deduced in consideration of the interference mode and the ODP. Then, the equation describing the scale-factor of the gyroscope is also obtained. The impacts of the interference mode and Q-factor on the frequency response and the scale-factor of the gyroscope are analyzed through numerical simulations. The relationship between the scale-factor and the demodulation phase is also illustrated and gives an effective way to find out the ODP in practice. The simulation results predicted by the transfer functions are in close agreement with the results of the experiments. The analyses and simulations can provide constructive guidance on bandwidth and sensitivity designs of the micro-gyroscopes operating at atmospheric pressure.

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“…To verify the correctness of the theoretical analyses, two tuning fork micro-gyroscope prototypes designed in our laboratory, referred to as SG-1 and SG-2, were taken into input-output amplitude-frequency tests using a virtual rate-table method [ 12 ]. These two prototypes have the same mechanical structure form, but different natural frequency configurations.…”

Section: Resultsmentioning

confidence: 99%

On Bandwidth Characteristics of Tuning Fork Micro-Gyroscope with Mechanically Coupled Sense Mode

Huang

et al. 2014

Sensors

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The bandwidth characteristics of a tuning fork micro-gyroscope with mechanically coupled sense mode were investigated in this paper to provide some references for mechanical bandwidth design. The concept of sense mode mechanical coupling is introduced first. Theoretical frequency response analyses were then carried out on the mechanical part of the gyroscope. Equations representing the relationships between the differential output signal and the frequency of the input angular rate were deduced in full frequency range and further simplified in low frequency range. Based on these equations, bandwidth characteristics under ideal and non-ideal conditions are discussed. Analytical results show that under ideal conditions, the bandwidth characteristics of a tuning fork micro-gyroscope are similar to those of a single mass micro-gyroscope, but under non-ideal conditions, especially when sense mass and/or stiffness are asymmetric, the bandwidth characteristics would be quite different because the in-phase mode would participate in the anti-phase vibration response. Experimental verifications were carried out on two micro-gyroscope prototypes designed in our laboratory. The deduced equations and analytical results can be used in guiding the mechanical bandwidth design of tuning fork micro-gyroscopes with mechanically coupled sense mode.

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Virtual Rate-Table Method for Characterization of Microgyroscopes

Cited by 17 publications

References 12 publications

Gyroscope sensing and self-calibration architecture based on signal phase shift

Gyroscope sensing and self-calibration architecture based on signal phase shift

Analysis of Frequency Response and Scale-Factor of Tuning Fork Micro-Gyroscope Operating at Atmospheric Pressure

On Bandwidth Characteristics of Tuning Fork Micro-Gyroscope with Mechanically Coupled Sense Mode

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