A Set of High Accuracy Low Cost Metallic Resonator CVG

V.V. Chikovani, I.M. Okon, A.S. Barabashov and P. Tewksbury

Abstract:	ABSTRACT-A set of all-digital metallic cylindrical CVGs of different diameters are presented in this paper. Innalabs CVG43 with resonator diameter of 43 mm, having natural frequency in the range 3 kHz and made of low damping and temperature stable material, is placed under vacuum cap with residual pressure of about 5×10-4 atm. The resonator Q factors reach values of 20000 - 30000 depending on resonator design and material used. CVG43 bias instability is about 0.03 deg/hr at stable temperature and about 0.5 deg/hr through its full temperature range (using temperature ramp of 1oC/min). Innalabs CVG25, which uses a 25 mm resonator diameter, has a bias instability of about 0.15-0.5 deg/hr, and a natural frequency approaching 6 kHz; is presented in Allan variance graphs at constant temperature and throughout its operating temperature range. Innalabs CVG17 gyro based on 17 mm resonator diameter has a bias instability of about 2.5 deg/hr and can survive many thousands of g's shock. This gyro is presented in Allan variance graphs and photos. This gyro sensor weighs about 20 grams and is ideal for unmanned aerial and underwater vehicle applications. Gyro accuracy through a wide temperature range is discussed and test results are presented. Three-axis units based on all types of these gyros are presented, as well. Future opportunities of each of these gyros are discussed.
Published in:	Proceedings of IEEE/ION PLANS 2008 May 6 - 8, 2008 Hyatt Regency Hotel Monterey, CA
Pages:	238 - 243
Cite this article:	Chikovani, V.V., Okon, I.M., Barabashov, A.S., Tewksbury, P., "A Set of High Accuracy Low Cost Metallic Resonator CVG," Proceedings of IEEE/ION PLANS 2008, Monterey, CA, May 2008, pp. 238-243. https://doi.org/10.1109/PLANS.2008.4569975
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