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Gyroscope: Precession01:24

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Precession can be demonstrated effectively through a spinning top. If a spinning top is placed on a flat surface near the surface of the Earth at a vertical angle and is not spinning, it will fall over due to the force of gravity producing a torque acting on its center of mass. However, if the top is spinning on its axis, it precesses about the vertical direction, rather than topple over due to this torque. Precessional motion is a combination of a steady circular motion of the axis and the...
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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response
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Published on: January 7, 2019

Digital signal processing for an open-loop fiber-optic gyroscope.

Y Gronau, M Tur

    Applied Optics
    |November 10, 2010
    PubMed
    Summary
    This summary is machine-generated.

    We present a modified harmonic division algorithm for open-loop fiber-optic gyroscopes (FOGs). This enhanced algorithm improves stability and simplifies implementation, matching closed-loop FOG performance using standard components.

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    Area of Science:

    • Optics and Photonics
    • Sensor Technology
    • Inertial Navigation Systems

    Background:

    • Open-loop fiber-optic gyroscopes (FOGs) offer simpler designs but typically exhibit lower stability compared to closed-loop FOGs.
    • Existing harmonic division algorithms for open-loop FOGs have limitations in performance and implementation complexity.
    • Integrated optics circuits are often required for advanced FOG implementations, increasing cost and complexity.

    Purpose of the Study:

    • To propose a novel modification of the harmonic division algorithm for open-loop FOGs.
    • To enhance the stability and simplify the implementation of open-loop FOGs.
    • To achieve performance comparable to closed-loop FOGs without requiring integrated optics.

    Main Methods:

    • Modification of the existing harmonic division algorithm.
    • Proper sampling and quantization of the analog signal from the FOG.
    • Implementation using readily available, off-the-shelf electronic components.

    Main Results:

    • The modified algorithm demonstrates improved stability for open-loop FOGs.
    • The proposed method simplifies the implementation compared to previous algorithms.
    • Performance equivalent to closed-loop FOGs was achieved through proper signal processing.
    • The system can be built without specialized integrated optics circuits.

    Conclusions:

    • The modified harmonic division algorithm offers a more stable and simpler solution for open-loop FOGs.
    • This approach enables open-loop FOGs to reach the performance levels of closed-loop systems.
    • The use of off-the-shelf components makes this a cost-effective and accessible solution for improved FOG technology.