Acoustic gyrometer

Details Acoustic gyrometer Acoustic gyrometer

1988-09-01

1990-02-27

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G01P 900

Patent

active

049035312

ABSTRACT:
The gyrometer comprises a cavity filled with a fluid in the form of a body of revolution having an axis coinciding with the axis of a rotation to be measured. An excitation transducer and a measuring transducer are disposed on the wall of the cavity in a same cross section and offset at an angle of 90.degree.. The excitation transducer excites a first acoustic resonance mode of the cavity and the measuring transducer measures a second mode of resonance induced by Coriolis forces when the cavity is subjected to the rotation to be measured. Such a gyrometer, less sensitive to mechanical embodiment inaccuracies, is assembled on, a moving body, for example, in order to measure its speed(s) of rotation.

REFERENCES:
patent: 3352162 (1967-11-01), Hart
patent: 4672848 (1987-06-01), Gohin et al.
Swokowski, E. W., "Calculus with Analytic Geometry" p. 549 (1975).

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