Apparatus and method for the elimination of angular vibration in

Details Apparatus and method for the elimination of angular vibration in Apparatus and method for the elimination of angular vibration in

1979-05-09

1981-02-03

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

042485347

ABSTRACT:
In a ring laser gyroscope which has a triangular block configuration, and which incorporates a triangular shaped laser resonant cavity defined by three corner mirrors, including an output mirror, the gyroscope is sinusoidally dithered to reduce lock-in effects at low angular rotational rates and the gyroscope output is corrected for error caused by lock-in at the extremities of each oscillation when the dither velocity is equal to zero by accumulating the ac voltage outputs of a photodiode measuring the light intensity of the interference pattern at each zero dither velocity and when the accumulated phase error reaches 2.pi. an overflow or borrow pulse is generated and added to the normal gyroscope output thereby correcting for the accumulated errors caused by lock-in at zero dither velocity.

REFERENCES:
patent: 3373650 (1968-03-01), Killpatrick

Affiliated with

Also associated with

Rating

Apparatus and method for the elimination of angular vibration in does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and method for the elimination of angular vibration in, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for the elimination of angular vibration in will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-548499