Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1993-03-08
1995-07-04
Goldstein, Herbert
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
73505, G01P 904
Patent
active
054289955
ABSTRACT:
A sensor for measuring angular rotation rates about three orthogonal axes is based upon sensing Coriolis acceleration forces with a pair of nearly-identical rotors coupled coaxialy by a torsion spring and counter-oscillating in rotation. The torsional oscillator is mounted within a case by means of radial vanes, each comprisig two piezoelectric ceramic plates bonded to a thin metal core responsive to drive signals and providing rotational vibration isolation. The arms of the rotors are designed as piezoelectric open loop accelerometers. Electrodes of selected configurations are mounted to the outer surfaces of the planar members to collect charge indicative of Coriolis accelerations proportional to the angular rotations about the orthogonal axes.
REFERENCES:
patent: 4841773 (1989-06-01), Stewart
patent: 4996877 (1991-03-01), Stewart
patent: 5001940 (1991-03-01), Ogawa
patent: 5065627 (1991-11-01), Stewart et al.
Fersht Samuel N.
Miller Samuel G.
Stewart Robert E.
Wyse Stanley F.
Felber Joseph L.
Goldstein Herbert
Kramsky Elliott N.
Litton Systems Inc.
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