G - Physics – 01 – C
Patent
G - Physics
01
C
G01C 19/66 (2006.01)
Patent
CA 2048357
A ring laser gyro having a ring laser that preferably has four legs and four corner mirrors. At least one of the corner mirror is partly transmissive, and the transmitted beam is sensed and converted into a digital signal. The digital signal is fed back in two computer loops to at least one digital-to-analog converter, and thence to a transducer which drives at least one corner mirror inward and outward. One of the computer loops includes a stepped demodulator having four steps per cycle. The steps have voltages at the operating voltage of the transducer, that voltage plus an increment, the operating voltage, and that voltage less a decrement. The first loop sends an operating voltage to the digital-to-analog converters. The second loops demodulates the beam signal at a second harmonic of the demodulation of the first loop to produce a voltage signal which controls- the amplitude of dithering of the movable mirrors. A stepped modulator, in synchronism with the demodulator of the first loop, delivers a modulation signal to the digital- to-analog converters to step the movable mirrors. The operating voltage moves the mirrors into a position wherein the laser cavity operates at its intensity mode peaks.
Mark John G.
Tazartes Daniel A.
Litton Systems Inc.
Macrae & Co.
LandOfFree
Computer generated cavity length control with automatic gain... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer generated cavity length control with automatic gain..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer generated cavity length control with automatic gain... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1850708