Tuned coriolis angular rate measuring device

Details Tuned coriolis angular rate measuring device Tuned coriolis angular rate measuring device

1981-02-27

1984-05-01

Gill, James J.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

74 5F, 74 5R, 74 56D, G01C 1906, G01C 1928, G01C 1942

Patent

active

044453752

ABSTRACT:
A tuned coriolis, angular rate measuring device includes a substantially hollow, generally annular rotor driven by a high-speed, synchronous spin motor. The rotor is made unsymmetrical by mounting within the rotor near its periphey at least a pair of high density masses, the respective masses being located diametrically opposite one another. The rotor is secured within a gimbal structure which is, in turn, mounted in tuned fashion upon a support housing through a cantilever spring at each end along the gimbal output axis, thereby providing bearingless, frictionless pivots permitting limited gimbal rotation. A pair of piezo-electric crystals is secured at opposite edges of one of the springs for sensing relative angular motion between the gimbal and the housing. The crystals are electrically paralleled so as to cancel any signals resulting from linear movement between the gimbal and housing.

REFERENCES:
patent: 1801619 (1931-04-01), Arrea
patent: 2291612 (1942-08-01), Draper
patent: 2716893 (1955-09-01), Birdsall
patent: 2964952 (1960-12-01), Hoover et al.
patent: 2991659 (1961-07-01), Bowden
patent: 3191445 (1965-06-01), Eklund
patent: 3290949 (1966-12-01), Samet
patent: 3382726 (1968-05-01), Endley
patent: 3463016 (1969-08-01), Endley et al.

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