Apparatus for demodulating gyroscope position information

Details Apparatus for demodulating gyroscope position information Apparatus for demodulating gyroscope position information

1983-07-05

1985-11-19

Bonck, Rodney H.

Machine element or mechanism

Gyroscopes

Gyroscope control

74 56D, G01C 1930, G01C 1932

Patent

active

045534390

ABSTRACT:
A synchronous demodulator is configured so as to extract gyroscope position nformation in a polar coordinate format and then resolve it into position information in a more useful cartesian coordinate format. The technique involves integration of a gyroscope cage coil signal over integration intervals controlled by spin reference signals rather than by the commonly noisy cage coil signal. Integration of the cage coil signal over intervals controlled by the spin reference signals yields outputs of .lambda. cos .theta. and .lambda. sin .theta. which are subsequently sampled and held and then summed to produce a precession coil drive signal whose phase is in the proper relationship to make the gyroscope precess in the correct direction.

REFERENCES:
patent: 3444745 (1969-05-01), Wing
patent: 3902374 (1975-09-01), Hoffman et al.
patent: 3955426 (1976-05-01), Klinchuch
patent: 4074580 (1978-02-01), Boltinghouse et al.
patent: 4179087 (1979-12-01), Johnson

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