Optical gyro with expanded detectable range of input rotation an

Details Optical gyro with expanded detectable range of input rotation an Optical gyro with expanded detectable range of input rotation an

1992-02-25

1995-05-02

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1972

Patent

active

054124719

ABSTRACT:
An optical gyro includes an optical propagation path, an optical system for giving a phase modulation and a serrodyne modulation by means of an analog sawtooth waveform signal, a unit for processing a photoelectric output signal from the optical system to thereby output a digital error data corresponding to a phase difference of light between light beams propagated in opposite directions, a unit for digitally setting a frequency of the sawtooth waveform signal for serrodyne modulation based on the error data, and a unit for generating the analog sawtooth waveform signal based on the digitally set frequency data. By changing the frequency of the sawtooth waveform signal for serrodyne modulation to thereby control the digital error data to be a value corresponding to the phase difference of light, it is possible to expand a maximum detectable range of an input rotation angular velocity and thereby obtain a gyro output or an angular increment output in a wide dynamic range.

REFERENCES:
patent: 4765739 (1988-08-01), Koizumi et al.
patent: 5018859 (1991-05-01), Chang et al.
patent: 5037205 (1991-08-01), Palath
patent: 5048962 (1991-09-01), Kurokawa et al.
patent: 5116127 (1992-05-01), Grollmann
Fiber-Optic Gyros: 10th Anniversary Conference (1986), vol. 719, pp. 101-112, 1986.
"Progress in Fiber Optic Gyro Development", C. M. Ferrar, ISA Transactions, pp. 41-49, vol. 28, No. 2, 1989.

Affiliated with

Also associated with

Rating

Optical gyro with expanded detectable range of input rotation an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical gyro with expanded detectable range of input rotation an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical gyro with expanded detectable range of input rotation an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1141545