Vibration-sensing element and vibration-sensing gyro using the s

Details Vibration-sensing element and vibration-sensing gyro using the s Vibration-sensing element and vibration-sensing gyro using the s

1994-10-26

1996-07-09

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G01P 904

Patent

active

055333974

ABSTRACT:
The invention provides a vibration-sensing gyro, where resonance frequencies of tines are adjusted adequately in a simple manner. A vibration-sensing gyro (10) of the invention is made of a light alloy plate like duralumin and includes a first tine (14) and a second tine (16) disposed parallel to each other and projecting from a base (12). When the first tine (14) has a length l1, a width w1 along the X axis, and a thickness t1 and the second tine (16) has a length l2, a width w2 along the X axis, and a thickness t2 (=t1), the first tine (14) and the second tine (16) hold the relationship of l2/.sqroot.t2=l1/.sqroot.w1. In other words, the tines (14,16) and the base (12) are manufactured to satisfy this relationship. Such definition of the dimensions makes a resonance frequency fx1 of the first tine along the X axis coincide with a resonance frequency fy 2 of the second tine 16 along the Y axis.

REFERENCES:
patent: 5166571 (1992-11-01), Konno et al.
patent: 5216315 (1993-06-01), Terada et al.
patent: 5343749 (1994-09-01), Macy

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