Vibratory angular rate sensor system

Details Vibratory angular rate sensor system Vibratory angular rate sensor system

1984-01-23

1985-06-25

Gill, James J.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G01C 1956

Patent

active

045246190

ABSTRACT:
A vibratory angular rate sensor system preferably consists of a Z-cut quartz plate forming a mounting frame with a rectangular opening. Within the opening are mounted two pairs of tines. Each pair of tines is parallel to each other, one pair forming the drive tines and the other pair the output tines. Each corresponding set of two tines is disposed along the same axis having a common stem or base. The tines are secured by four bridges integral with the frame and connected to the stem. The arrangement is such that the pair of input tines vibrates in opposition to each other, while the pair of output tines vibrates with one tine going up while the other moves downwardly. As a result, the angular rate sensors drive frequency and the structural torque frequency are unequal. Therefore large displacements of the stem are unnecessary.

REFERENCES:
patent: 3127775 (1964-04-01), Hansen et al.
patent: 3141100 (1964-07-01), Hart

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