Viratory gyro accuracy parameters improving by means of excitation control

Valeriy Valerianovich Chikovani, Gana Victorivna Tsiruk

Abstract

On the basis of Coriolis vibratory gyro standing wave manipulation by applying corresponding control forces, bias is reduced to the value that allows the gyro to measure North direction using low-cost and small-sized Coriolis vibratory gyro in differential mode of operation. Condition is determined for control forces resulting in frequency mismatch reduction to minimum in wide temperature range during angle rate measurement

Keywords

Differential Coriolis vibratory gyro; bias; control forces; frequency mismatch; Q-factor mismatch

References

Chikovani, V. V.; Umakhanov, E. O., Marusyk, P. I. “The compensated differential CVG.” Gyro Technology: Symposium, 16-17 September 2008. Germany: Karlsruhe university. pp. 3.1–3.8.

Chikovani, V. V. “Secondary wave control system of the Coriolis vibratory gyroscope resonator.” Electronics and Control Systems. Kyiv, no. 1 (35). 2013. pp. 58–61.

Loveday, Ph. W. “Analysis and compensation of imperfection effects in piezoelectric vibratory gyroscopes.” Dissertation, Doctor of Philosophy, Virginia Polytechnic Institute, Blacksburg, Virginia, February 1999. 147 p.

Lynch, D. D. “Coriolis Vibratory Gyros.” Simposium Gyro Technology, Stuttgart, Germany, 21-23 September, 1998. pp. 3.1–3.14.

Chikovani, V. V. “Method of angle rate measurement by Coriolis vibratory gyro.” Patent no. 95709 Ukraine, Int. Cl.G01 С 19/02. Publ. date 25.08.2011, Bulletin no. 16/2011 (in Ukraine).

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