Gyroscopic system and method of determining direction

Details Gyroscopic system and method of determining direction Gyroscopic system and method of determining direction

1971-04-09

1976-10-26

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Gyroscopically controlled or stabilized

74 5F, G01C 1928

Patent

active

039875555

ABSTRACT:
A gyroscopic directional reference system comprising a two-degree-of-freedom gyroscope including a tuned single flexible hinge rotor and capacitance sensors for measuring the torsional displacement of the rotor about its hinge. The sensors are arranged to provide two orthogonal signal output axes and the gyroscope is suspended, for the sake of convenience, with the rotor spin axis parallel with the local earth gravity or, in order to provide maximum signal gradient, perpendicular to the earth rotation axis. A signal summing system produces an output signal which is nulled when the input axes are angularly oriented at 45.degree. with respect to the earth rotation axis and a servo system is provided for rotating the gyroscope about its spin axis to null the output signal. Alternatively, a capacitance sensing transducer system produces an output signal representing the angular orientation of the gyro relative to the earth rotation axis.

REFERENCES:
patent: 2716893 (1955-09-01), Birdsall
patent: 3463016 (1969-08-01), Erdley et al.
patent: 3557629 (1971-01-01), Quermann

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