Differential mode of operation for multimode vibratory gyroscope

Chikovani, V. V.; Tsiruk, H. V.

doi:10.1109/apuavd.2015.7346568

Cited by 7 publications

(14 citation statements)

References 3 publications

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“…x=A cos2 sin( r t); y=A sin2 sin( r t+), (3) where  is a phase difference between X and Y sense electrode signals, A is standing wave amplitude,  is the angle between X axis and standing wave oscillation direction. This solution transformed into output signals in voltages for =0 results in the following measurement equations [6]: (4) where z x , z y , D x , D y are X and Y channel measurement signals in voltages and deformation-to-voltage conversion coefficients, respectively.…”

Section: Differential Cvgmentioning

confidence: 99%

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Effective rejection of acoustic and magnetic fields’ disturbances by single-mass differential vibratory gyroscope

Chikovani¹,

Tsiruk²

2017

Military Technical Collection

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Differential mode of operation as a third mode unlike the first one -rate and second one -rateintegrating modes of vibratory gyroscopes is analyzed in this paper. In the differential mode of operation the standing wave is keeping in between the electrodes. In this case two X and Y measurement channels are created with opposite signs of angle rates. Biases and scale factors of X and Y measurement channels are dependant on standing wave angular position  relative to drive, X, electrode. There is angular position  * at which X measurement channel scale factor SF x is equal to Y measurement channel scale factor SF y . Rejection factors of external acoustic impulses which frequency is close to resonant one, and also of constant and variable magnetic fields are experimentally determined in this paper when standing wave angle is located at the  * angular position. As opposed to other types of differential gyros that can be implemented using two or multi-mass resonator designs, single-mass resonator gyros can have higher rejection factors for different disturbances at the  * angular position of standing wave providing meeting the requirements of many important applications. Test results show excellent disturbance rejection properties of differential mode of operation for single-mass resonator gyros. Comparison of responses of the differential mode with the rate mode of the same gyro on disturbances is also carried out in this work.

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Section: Differential Cvgmentioning

confidence: 99%

“…There are two well-known mode of CVG operationrate mode and rate-integrating one [1,2]. Comparatively recent investigations [3,4] resulted in the third, differential, mode of CVG operation with higher shock damping [5] and noise compensation [6] ability than the first two modes.…”

Section: Introductionmentioning

confidence: 99%

Effective rejection of acoustic and magnetic fields’ disturbances by single-mass differential vibratory gyroscope

Chikovani¹,

Tsiruk²

2017

Military Technical Collection

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“…One can choose angle , from application point of view, such that Bx=By, or SFx=SFy, both of these angles are different and close to 22.5 deg [21]. To effectively implement differential mode of operation it is advisable to align standing wave under angle * at which SFx=SFy, so using (2) the following relationship can be written down…”

Section: Standing Wave Vibration Directionmentioning

confidence: 99%

“…Differential CVG control system block diagram operating in differential mode of operation under command signal comm=-* is presented in Figure 2. It should be noted that when comm=0 it operates in the rate mode and when connection of real signal to proportional and integral (PI) controller is open, it operates in rateintegrating mode [21].…”

Section: Standing Wave Vibration Directionmentioning

confidence: 99%

“…CVGs defer from other gyroscope technologies by that all practically interesting, which we are numbered here as the first, second and third modes of operation can be implemented in a single triple-mode vibratory gyroscope with automatic switching from one mode to other [21]. It should be noted that dual mode CVG (the first and second ones) have been implemented and described in [7].…”

Section: Introductionmentioning

confidence: 99%

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External Disturbances Rejection by Differential Single-Mass Vibratory Gyroscope

2017

APH

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Vibratory gyroscopes are now most applicable for such intelligent systems as drones, for motion stabilization, robots for accurate positioning of end-effectors, virtual reality systems to change image orientation with turn of a head and many others. During motion these systems can be exposed to mechanical shocks and vibrations. To provide required accuracy, working in such environmental conditions, gyroscopes shall have property of robustness to operating disturbances. This paper proposes differential mode of operation for single-mass vibratory gyroscope as a new operating mode that has higher rejection factors for different external disturbances like shocks and vibrations allowing meeting the requirements of many important applications in intelligent systems. Test results presented in this paper show excellent disturbance rejection properties of differential mode of operation in comparison to well-known rate mode. Despite excellent disturbance rejection results have been obtained for non MEMS gyro, the same results can certainly be obtained for MEMS gyro, too.

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Rate Vibratory Gyroscopes Bias Minimization by the Standing Wave Angle Installation

Chikovani

Golovach²

2020

2020 IEEE 40th International Conference on Electronics and Nanotechnology (ELNANO)

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Differential mode of operation for multimode vibratory gyroscope

Cited by 7 publications

References 3 publications

Effective rejection of acoustic and magnetic fields’ disturbances by single-mass differential vibratory gyroscope

Effective rejection of acoustic and magnetic fields’ disturbances by single-mass differential vibratory gyroscope

External Disturbances Rejection by Differential Single-Mass Vibratory Gyroscope

Rate Vibratory Gyroscopes Bias Minimization by the Standing Wave Angle Installation

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