Gyroscopic devices

Details Gyroscopic devices Gyroscopic devices

1985-02-20

1987-04-07

Tokar, Michael J.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

310329, 310369, G01P 904

Patent

active

046550810

ABSTRACT:
A gyroscopic device comprising a resonator in the form of a disc, cylinder or like structure of circular outline, of a composition containing piezo-electric material and preferably made of a an integral mass of such material. The resonator is excited into dilatation-type vibration by electric currents applied to exciting electrodes electro-deposited in a regular pattern around the circumference of the structure, and these vibrations are sensed by detecting electrodes similarly deposited around the wall in a similar but angularly displaced pattern. A measure of any rate of turn which the structure is undergoing about its axis can be derived from the resulting phase shift of the electrical output from the detecting electrodes.

REFERENCES:
patent: 2683247 (1954-07-01), Wiley
patent: 3182512 (1965-05-01), Jones et al.
patent: 3408872 (1968-11-01), Simmons et al.
patent: 3648512 (1972-03-01), Abbotts
patent: 4079630 (1978-03-01), Friedland et al.
patent: 4489609 (1984-12-01), Burdess et al.
"The Vibrating Cylinder Gyro", Langdon, 1982, Marconi Review, 231-249.
Machine Design, "Solid-State Gyro `Dances the Twist`", 1962, p. 12.

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