Laser gyro dither drive

Details Laser gyro dither drive Laser gyro dither drive

1991-12-11

1993-07-06

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

372 94, G01C 1970

Patent

active

052258890

ABSTRACT:
A direct digital dither drive for a laser gyro dither motor including a digital microcomputer which controls the dithering of a laser gyro to prevent lock in of the laser beams. The digital drive senses a dither position and schedules internal A/D conversions using an A/D conversion arbitration scheme. The period frequency and location of the minimum and maximum drive are determined using the microcontroller. Accurate dither drive is accomplished using a digital analog feedback system which compensates for real time changes in dither pickoff and dither drive components.

REFERENCES:
patent: 4529311 (1985-07-01), Morgan et al.

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