Piezoelectric vibratory rate sensor

Details Piezoelectric vibratory rate sensor Piezoelectric vibratory rate sensor

G - Physics

01

P

340/148.5

G01P 13/00 (2006.01) G01C 19/56 (2006.01)

Patent

CA 2016808

ABSTRACT A vibrating rotation rate sensor of the type that includes a generally-planar, H-shaped frame of piezoelectric material such as quartz. A first set of drive electrodes is fixed to a pair of upper tines and a second set of pickoff electrodes is fixed to a pair of lower tines. An array of control electrodes is fixed to the upper tine pair adjacent the cross-piece of the H-shaped frame. The control electrodes permit the application of control signals for nulling coriolis- induced out-of-plane vibration of the upper tines allowing use of a resonant frame.

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