Coriolis force gyroscope with high sensitivity

Details Coriolis force gyroscope with high sensitivity Coriolis force gyroscope with high sensitivity

2007-10-16

2007-10-16

Chapman, John E. (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

Reexamination Certificate

active

11284922

ABSTRACT:
A gyroscope includes a substantially cylindrical resonator mounted in a housing, and a bottom plate attached to the resonator. A plurality of openings are arranged circumferentially and equiangularly on the bottom plate. A plurality of piezoelectric elements arranged between the openings on the bottom plate. The number of openings can be anywhere between 2 and 16, with eight openings preferred, with a corresponding number of piezoelectric elements. Preferably, substantially the entire available area of the bottom plate is taken up by the piezoelectric elements. The piezoelectric elements can be inside or outside the resonator.

REFERENCES:
patent: 4644793 (1987-02-01), Church
patent: 6016699 (2000-01-01), Kasanami et al.
patent: 6640630 (2003-11-01), de Salaberry
Yatsenko, Y., et al., “The principle of angular rate sensors building on the basis of solid-state wave gyro using cylindrical resonator and poaition excitation.” Central Design Bureau “Arsenal” (1996).
Chikovani, V.V., et al., “Test Results for the First Batch of Coriolis Vibratory Gyroscopes and Analysis of Their Characteristics,” Gyroscopy and Navigation 2:41 (2003).

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