Laser gyro direct dither drive

Details Laser gyro direct dither drive Laser gyro direct dither drive

G - Physics

01

C

G01C 19/70 (2006.01)

Patent

CA 2152799

A direct digital dither drive for a laser gyro dither motor (244B) including a digital microcomputer, (100) which controls the dithering of a laser gyro (10) 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 abritation scheme. The period frequency and location of the minimum and maximum drive an determined using the microcontroller (100). Accurate dither drive is accomplished using a digital analog feedback system which compensates for real time changes in dither pickoff (244A) and dither (244B) drive components.

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