Ring laser gyroscope dither drive system and method

Details Ring laser gyroscope dither drive system and method Ring laser gyroscope dither drive system and method

1989-06-19

1991-01-01

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

049813595

ABSTRACT:
A dither drive system for a ring laser gyroscope includes a computer, a digital to analog converter, a filter, and a power amplifier. The system senses the dither frequency of the gyro frame and produces a digital signal that corresponds to a specified dither drive signal and toggles the dither drive signal to drive the flexure at its resonant frequency. The dither drive system generates digital waveforms that approximate the sine function and digital waveforms that approximate the cosine function and applies the digital waveforms in quadrature to the flexure.

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patent: 4801206 (1989-01-01), Benoist
Coccoli, "An Overview of Laser Gyros," presented at Twelfth Joint Services Data Exchange for Inertial Systems, pub. Aug. 1978.
Killpatrick, "The laser gyro," reprinted from IEEE Spectrum, Oct. 1967, pp. 44-55.
Hammons & Ashby, "Mechanically Dithered RLG at the Quantum Limit," IEEE 1982, pp. 38-392.

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