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Volume 32 Issue 11
Nov.  2006
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Journal of Beijing University of Aeronautics and Astronautics  > 2006  >  32(11): 1365-1368.
Li Minjiang, Gui Xingmin. Staggered finite volume method for turbomachinery viscous flow field numerical investigation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2004, 30(06): 577-582. (in Chinese)
Citation: Wu Zhanjun, Zhang Xi, Wang Xiaxiao, et al. Broad bandwidth signal detection scheme for high precision fiber optic gyroscope[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(11): 1365-1368. (in Chinese)
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Broad bandwidth signal detection scheme for high precision fiber optic gyroscope

  • School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 30 Apr 2006
  • Publish Date: 30 Nov 2006
    Abstract
  • Good static and dynamics environment performance of the signal detection scheme is necessary to meet the practice application of the high precision fiber optic gyroscope (HPFOG). All-digital closed-loop signal detection procedure of HPFOG was analyzed. Closed-loop transfer function of the detection system was derived. The general eigen frequency modulation caused the long sample period and low bandwidth. The feedback can not null high frequency noise signal caused by the dynamics environment. The closed-loop system was destroyed, and unacceptable dynamic error was caused. The signal detection scheme based on triple eigen frequency modulation/demodulation was designed. The sample period was 1/3 that of the eigen frequency modulation, and the system bandwidth was increased effectively. The dynamics environment and static experiment results of the two schemes were compared. It shows that the triple eigen frequency signal detection scheme improved the dynamics environment adaptability of the HPFOG effectively, and the static performance is not infected. This can satisfy the application needs.

     

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