Model of Error of a FiberOptic Gyro Exposed to Thermal and Magnetic Fields

The error of a typical gyroscopic device is characterized by the mean angular rate of deviation of the angular momentum vector in the inertial space (called a drift rate or intrinsic precession rate of a gyro). A model of error of a fiber-optic gyro is defined using the notion of "coefficient of impact on the rate of variation in the ambient temperature and the external magnetic field strength". A technique is described for finding these coefficients by experiments. A substantial influence of the rate of variation in the ambient temperature and the magnetic field strength on the gyro accuracy is established. The developed model makes it possible to build a technique of algorithmic compensation of gyro errors during the operation on the basis of data received from thermal transducers and magnetometers.

References

[1] Pel’por D.S. Giroskopicheskie sistemy. Ch. 3 [Gyroscopic systems. Part3]. Мoscow, Vysshaya Shkola Publ., 1991. 382 p.

[2] Matveev V.A. Giroskop - eto prosto [Gyro - it’s just]. Moscow, MGTU im. N.E. Baumana Publ., 2013. 191 p.

[3] Matveev V.A., Lipatnikov V.I., Alekhin A.V. Proektirovanie volnovogo tverdotel’nogo giroskopa [Designing a hemispherical resonator gyro]. Moscow, MGTU im. N.E. Baumana Publ., 1997. 168 p.

[4] Sheremet’ev A.G. Volokonnyy opticheskiy giroskop [Fiber optical gyroscope]. Moscow, Radio i Svyaz’ Publ., 1987. 152 p.

[5] Pakhomov I.I., Rozhkov O.V., Rozhdestvin V.N. Optiko-elektronnye kvantovye pribory [Electro-optical quantum devices]. Moscow, Radio i Svyaz’ Publ., 1982. 456 p.

[6] Chesnoy J. Picosecond gyrolaser. Optic Letters, 1989, vol. 14, pp. 990-992.

[7] Dennis M.L., Diels J.-C., Lai M. Femtosecond ring dye laser: a potential new laser gyro. Optic Letters, 1991, vol. 16, pp. 529-531.

[8] Tausenev A.V., Obraztsova E.D., Lobach A.S., Chernov A.J., Kotov V.J., Kryukov P.G., Konyachenko A.V., Dianov E.M. 177 fs erbium-doped fiber laser mode locked with a ceilulose polymer film containing single-wail carbon nanotubes. Appl. Phys. Lett., 2008, vol. 92: 171113.

[9] Antonova M.V., Gusev A.P., Novikov L.Z. Experimental investigation of the registration dependence of the fiber-optic gyroscope vs its orientation relative to vertical. Nauch.-tekhn. sb. "Raketno-kosmicheskaya tekhnika". Ser. XI. Sist. upravleniya raketnykh kompleksov [Sc.-Eng. Collect. Pap. "Rocket Space Engineering". Ser. XI. Control system of missile systems], 2010, iss. 2, part I (in Russ.).

[10] Antonova M.V., Gusev A.P., Novikov L.Z. Work to refine the mathematical model of the errors of fiber-optic gyroscope. Sb. dokladov VIII Nauch.-Prakt. Konf. molodykh spetsialistov i studentov pamyati glavnogo konstr. ak. V.I. Kuznetsova [Proc. VIII Sc.-Pract. Conf. of students and young professionals memory Ch. Designer Acad. V.I. Kuznetsova]. Moscow, MGTU im. N.E. Baumana, 2010 (in Russ.).