Acoustic gyrometer

Details Acoustic gyrometer Acoustic gyrometer

1984-10-26

1987-06-16

Levy, Stewart J.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G01P 900

Patent

active

046728481

ABSTRACT:
The invention relates to a gyrometer, without material rotor, of the type using the Coriolis forces on the particles of a fluid contained in a resonant cavity. It comprises, in addition to the conventional excitation and detection unit, a unit for effecting servo-control in phase of the longitudinal acoustic oscillation in the cavity and employs a weak coupling mode between exciter and cavity. The gyrometer according to the invention overcomes the variations in length of the cavity and the fluctuations in the speed of propagation of the oscillations in the fluid as a function of the temperature.

REFERENCES:
patent: 2999389 (1961-12-01), Granqvist
patent: 3352162 (1967-11-01), Hart
patent: 3625067 (1971-12-01), Emslie
patent: 4463606 (1984-08-01), Barmatz
patent: 4520656 (1985-06-01), Barmatz et al.

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