Abstract
This paper presents an optimal structural design of dither mechanism in dithered ring laser gyroscope (DRLG) using finite element analysis (FEA). We establish an approximate theoretical model of the dithering mechanism to calculate resonant frequency and adopt the modal analysis and dynamics analysis to search the optimal solution. The validity and efficiency of the FEA are conformed by comparing with the sinusoidal and random vibration experimental results. An optimal dither mechanism is fabricated and measured experimentally. The results demonstrate the good vibration-isolated performance for the optimal design.
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References
Titterton, D. H. and Weston, J. L., “Strapdown inertial navigation technology,” Institution of Electrical Engineers, 2004.
Tucker, T. and Levison, E., “The AN/WSN-7B marine gyrocompass/navigator,” Proc. of the 2000 National Technical Meeting of the Institute of Navigation, pp. 348–357, 2000.
Gilster, G., “High accuracy performance capabilities of the military standard ring laser gyro inertial navigation unit,” IEEE Position Location and Navigation Symposium, pp. 464–473, 1994.
Lawrence, A., “Modern inertial technology: navigation, guidance, and control,” Springer-Verlag, Inc., 1998.
Chow, W. W., Gea-Banacloche, J., Pedrotti, L. M., Sanders, V. E., Schleich, W., and Scully, M. O., “The ring laser gyro,” Rev. Mod. Phys., Vol. 57, No. 1, pp. 61–104, 1985.
Lahham, J. I. and Brazell, J. R., “Acoustic noise reduction in the MK49 ship’s inertial navigation system (SINS),” IEEE Position Location and Navigation Symposium, pp. 23–28, 1992.
Lahham, J. I., Wigent, D. J., and Coleman, A. L., “Tuned support structure for structure-borne noise reduction of inertial navigator with dithered ring laser gyros (RLG),” IEEE Position Location and Navigation Symposium, pp. 419–428, 2000.
Shackleton, B. R., “Mechanical design considerations for a ring laser gyro dither mechanism,” Proceeding Instrument Mechanical Engineering, pp. 105–112, 1987.
Lee, D. C., Jang, J. H., and Han, C. S., “Parametric design consideration of a vibro-elastic bimorph piezoelectric converter for a ring laser gyroscope,” Smart Mater. Struct., Vol. 15, pp. 1165–1171, 2006.
Lee, D. C., Yun, D. W., and Han, C. S., “A material rigidity effect of a bimorph piezoelectric actuator,” Smart Mater. Struct., Vol. 16, pp. 1043–1049, 2007.
Lee, D. C., Moon, G., and Lee, J. C., “Mechanical dither design for ring laser gyroscope,” KSME International Journal, Vol. 16, pp. 485–491, 2002.
Lee, S. H., Shon, W. H., Suh, S. W., Yu, S. N., and Han, C. S., “Piezoelectric actuators for the correction of optical ray path in the operation of laser gyros,” Int. J. Precis. Eng. Manuf., Vol. 12, No. 1, pp. 91–96, 2011.
IEEE Standard 647-2006, “IEEE standard specification format guide and test procedure for single-axis laser gyros,” 2006.
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Yu, Xd., Wei, G., Long, Xw. et al. Finite element analysis and optimization of dither mechanism in dithered ring laser gyroscope. Int. J. Precis. Eng. Manuf. 14, 415–421 (2013). https://doi.org/10.1007/s12541-013-0057-3
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DOI: https://doi.org/10.1007/s12541-013-0057-3