Piezoelectric vibrator and vibratory gyroscope using the same

Details Piezoelectric vibrator and vibratory gyroscope using the same Piezoelectric vibrator and vibratory gyroscope using the same

1996-08-30

1999-08-24

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, 310370, H01L 4108

Patent

active

059428392

ABSTRACT:
A piezoelectric vibrator having three parallel vibrator arms formed from piezoelectric material in which dielectric polarization is generated through the application of electric fields extending widthwise between first electrodes formed on top surfaces thereof and between second electrodes formed on bottom surfaces, and also between the first and second electrodes through the piezoelectric material, such that a portion of the dielectric polarization occurs at the surfaces of the vibrator arms, and a portion also occurs within the vibrator arms. When ac driving voltages are applied to the electrodes, the vibrator arms vibrate at large vibration amplitudes due to strains created in the portion of dielectric polarization within the vibrator arms.

REFERENCES:
patent: 5420548 (1995-05-01), Nakajima
patent: 5451828 (1995-09-01), Tomikawa et al.
patent: 5691595 (1997-11-01), Tomikawa et al.
patent: 5708320 (1998-01-01), Ohnishi et al.
patent: 5824900 (1998-10-01), Konno et al.
patent: 5854427 (1998-12-01), Terada et al.

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