LASER gyro readout signal stabilization in high vibration...

Details LASER gyro readout signal stabilization in high vibration... LASER gyro readout signal stabilization in high vibration...

2008-06-17

2008-06-17

Turner, Samuel A (Department: 2877)

Optics: measuring and testing

By light interference

Rotation rate

C356S472000

Reexamination Certificate

active

07388670

ABSTRACT:
A method of stabilizing beam power in a ring LASER gyroscope (RKG) during high vibration is provided. The method comprises modifying an electrical signal output from an RLG photodetector to generate a direct current (DC) feedback signal, the DC levels of the feedback signal being proportional to RLG beam power. The method further comprises comparing the DC levels of the feedback signal to a DC reference signal, wherein the DC levels of the reference signal are proportional to a desired RLG beam power level. The method also comprises generating a difference signal representing a difference signal representing a difference between the DC levels of the reference signal and the feedback signal and adjusting RLG beam power based on the difference signal.

REFERENCES:
patent: 3612690 (1971-10-01), Staats
patent: 4284964 (1981-08-01), Maier, Jr.
patent: 5088824 (1992-02-01), Killpatrick et al.
patent: 5489981 (1996-02-01), Killpatrick et al.

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