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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/3844

Title: Dynamics of rotating and vibrating thin hemispherical shell with mass and damping imperfections and parametrically driven by discrete electrodes
Authors: Shatalov, M
Coetzee, C
Keywords: Hemispherical resonator gyroscope
Whole angle regime
Parametric electrode
Compensation of gyro drift
Issue Date: May-2009
Citation: Shatalov, M and Coetzee, C. 2009. Dynamics of rotating and vibrating thin hemispherical shell with mass and damping imperfections and parametrically driven by discrete electrodes. 16th Saint Petersburg International Conference on Integrated Navigation Systems. Saint Petersburg, Russia, 25-27 May 2009, pp 10
Abstract: The parametric electrode is normally used in the hemispherical resonator gyroscopes, operating in the whole angle regime, for maintaining of amplitudes of vibratory patterns. It is well known that due to variation of the gap between the resonator and parametric electrode a drift of the vibrating pattern is obtained. This drift is similar to the gyro drift stipulated by the Q-factor imperfections and substantially deteriorates the quality of the hemispherical resonator gyroscope. In the present paper we consider the methods of compensation of these drifts by means of the special control of the vibrating pattern by the sectioned parametric electrode. Compensation of the drifts is achieved through amplitudes of voltage and phase manipulations at the sectioned parametric electrodes. The side effect of this control is discussed consisting of spurious splitting of frequencies of the vibrating pattern
Description: 16th Saint Petersburg International Conference on Integrated Navigation Systems. Saint Petersburg, Russia, 25-27 May 2009
URI: http://hdl.handle.net/10204/3844
Appears in Collections:Aeronautic systems
Sensor science and technology
Advanced mathematical modelling and simulation
General science, engineering & technology

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