Angular velocity sensing device

Details Angular velocity sensing device Angular velocity sensing device

1999-05-24

2000-11-28

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G01P 904

Patent

active

061519642

ABSTRACT:
The angular velocity sensing device is structured in such a manner that a first vibration element 1 having piezoelectric elements or electrodes (two or more) for generating oscillation and a second vibration element 2 having piezoelectric elements or electrodes (two or more) for sensing angular velocity are connected through first connection portions (two or more) on nodes of vibration (two or more) of the first vibration element 1, and the second vibration element 2 and a supporting portion are connected with each other through second connection portions (two or more). These first, second vibration elements, the supporting portion, and the first, second connection portions have a plane structure with almost uniform thickness, and both of the first vibration element and the second vibration element are made to have symmetric shapes with respect to the common center point P.

REFERENCES:
patent: 5226321 (1993-07-01), Varnham et al.
"Micro Structure Bulletin"--Newsletter for Nordic Micro Structure Technology. vol. 4, No. 2--May 1996, J. Soderkvist, "50 Years with Quartz", pp. 1-8.

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