ATMOSPHERE PRESSURE EFFECT ON THE FIBER OPTIC GYROSCOPE OUTPUT SIGNAL

Sharkov Ilya A., Vinogradov Andrey V, Kozlov  Vitaly N., Vladimir E. Strigalev, Kikilich Nikita E

doi:10.17586/2226-1494-2017-17-3-380-386

2017 , VOLUME 17, NUMBER 3 ( May-June )

ISSN 2226-1494 (print), ISSN 2500-0373 (online)

Publications

Editor-in-Chief

Nikiforov
Vladimir O.
D.Sc., Prof.

Partners

doi: 10.17586/2226-1494-2017-17-3-380-386

ATMOSPHERE PRESSURE EFFECT ON THE FIBER OPTIC GYROSCOPE OUTPUT SIGNAL

I. A. Sharkov, A. V. Vinogradov, V. N. Kozlov, V. E. Strigalev, N. E. Kikilich

Read the full article

Article in Russian

For citation: Sharkov I.A., Vinogradov A.V., Kozlov V.N., Strigalev V.E., Kikilich N.E. Atmosphere pressure effect on the fiber optic gyroscope output sygnal. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2017, vol. 17, no. 3, pp. 380–386 (in Russian). doi: 10.17586/2226-1494-2017-17-3-380-386

Abstract

The paper describes research results of the atmospheric pressure effect on the output signal of a fiber optic gyroscope (FOG). In the course of experiments, FOG was placed into a hermetic chamber. The atmosphere pressure was varying in the range from 0.8 to 1.5 atm. All the data, including the FOG output signal, temperature, and data from the pressure sensor installed inside the FOG, were synchronously registered with the computer software. The separation of scale factor change from zero offset in the experiment was carried out by setting the sensitive FOG axis at 0°, 90° and 270° relative to the East (the FOG was set perpendicular to the horizon). After the data processing it was concluded that the FOG signal error associated with the pressure affects mainly on the additive component. The pressure effect on the multiplicative component appeared to be negligible at rotational velocities used in the experiment (0 - 13⁰/h). At the same time, the FOG signal has a high linear correlation coefficient with the derivative of pressure over time (in some cases, more than 0.9). The experiment was repeated several times and the high degree of the drift repeatability was shown. That makes it possible to implement the compensation algorithm. Application of the simplest algorithmic compensation based on the polynomial of the first degree (ax + b) enabled to reduce the root-mean-square (RMS) and drift of the signal by 2-9 times.

Keywords: fiber optic gyro, fiber loop, zero offset, atmosphere pressure effect, algorithmic compensation

Acknowledgements. The work was supported by the Russian Federation Ministry of Education and Science, contract No. 14.578.21.0109 dated 27.10.2015.

References

1. Korkishko Y.N., Fedorov V.A., Prilutskii V.E., Ponomarev V.G., Morev I.V. et. al. Strapdown inertial navigation systems based on fiber-optic gyroscopes. Gyroscopy and Navigation, 2014, vol. 5, no. 4, pp. 195–204. doi: 10.1134/S2075108714040154

2. Rivkin B.S. Inertial sensors and systems-2016. Giroskopiya i Navigatsiya, 2016, vol. 24, no. 4, pp. 139–148. (In Russian)

3. Barbour N.M. Inertial navigation sensors. NATO Report RTO-EN-SET-116, 2010, no. 2-1, pp. 2–28.

4. Peshekhonov V.G. Gyroscopic systems: current status and prospects. Gyroscopy and Navigation, 2011, vol. 2, no. 3, pp. 111–118. doi: 10.1134/S2075108711030096

5. Paturel Y., Honthaas J., Lefevre H., Napolitano F. One nautical mile per month FOG based strapdown inertial navigation system: a dream already within reach? Gyroscopy and Navigation, 2014, vol. 5, no. 1, pp. 1–8. doi: 10.1134/S207510871401009X

6. Lefevre H.C. The fiber-optic gyroscope: achievement and perspective. Proc. 19^th St. Petersburg Int. Conf. on Integrated Navigation Systems. St. Petersburg, Russian, 2012, pp. 122–126.

7. Okosi T., Okamoto K., Otsu M., Nisihara H., Kuma K., Hatate K. Fiber-Optic Sensors. Leningrad, Energoatomidat Publ., 1990, 256 p. (in Russian)

8. Fiber Optic Sensors: An Introduction for Engineers and Scientists. Ed. E. Udd. NY, John Wiley & Sons, 2011, 512 p. doi: 10.1002/9781118014103

9. Dranitsyna E.V., Egorov D.A., Untilov A.A., Deineka G.B., Sharkov I.A., Deineka I.G. Reducing the effect of temperature variations on FOG output signal. Gyroscopy and Navigation, 2012, vol. 4, no. 2, pp. 92–98. doi: 10.1134/S2075108713020041

10. Kurbatov A.M. New methods to improve the performance of open and closed loop fiber-optic gyros. Gyroscopy and Navigation, 2015, vol. 6, no. 3, pp. 207–217. doi: 10.1134/S2075108715030098

11. Meshkovskii I.K., Miroshnichenko G.P., Rupasov A.V., Strigalev V.E., Sharkov I.A. Investigation of thermal effects influence on the operation of a fiber-optic angular velocity sensor. Proc. XXI St. Petersburg Int. Conf. on Integrated Navigation Systems. St. Petersburg, 2014, pp. 191–202.

12. Sharkov I.A. Rupasov A.V., Strigalev V.E., Volkovskii S.A. Thermal instability influence of the radiation source characteristics on the signal of fiber-optic gyroscope. Scientific and Technical Journal of Information Technologies, Mechanics and Optics, 2013, no. 6, pp. 31–35.

13. Lefevre Н.С. Fiber Optic Gyroscope. 2^nd ed. London, Artech House, 2014, 416 p.

14. Kuz'minov Yu.S. Electro-Optical and Nonlinear-Optical Lithium Niobate Crystal. Moscow, Nauka Publ., 1987, 264 p. (In Russian)

15. Novikov R.L. Technological equipment and methods for quality improving of the fiber loop winding of a fiber optic gyroscope. Eng. Sci. Diss. St. Petersburg, 2014, 94 p. (In Russian)

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License