Piezoelectric vibratory gyroscope utilizing an energy-trapping v

Details Piezoelectric vibratory gyroscope utilizing an energy-trapping v Piezoelectric vibratory gyroscope utilizing an energy-trapping v

1997-06-18

1999-03-30

Felber, Joseph L.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

7350404, 310320, 310366, G01P 904

Patent

active

058874801

ABSTRACT:
A piezoelectric vibratory gyroscope utilizing an energy-trapping vibration mode comprises a piezo-electric plate having a principal surface and polarized in a thickness direction, and first through n-th electrodes (n being an integer not smaller than three) formed in a generally central area of the principal surface at positions corresponding to first through n-th vertexes of a polygon having n angles. When the piezoelectric plate is excited in the energy-trapping vibration mode of a primary vibration, rotation of the piezoelectric plate around an axis perpendicular to the principal surface of said piezoelectric plate produces the Coriolis force to excite a secondary vibration which induces electric voltages at the first through the n-th electrodes. A voltage difference is detected for at least two of the first through the n-th electrodes.

REFERENCES:
patent: 4489609 (1984-12-01), Burdess et al.
patent: 5604310 (1997-02-01), Nakamura
Electronics & Communications in Japan, Part II-Electronics, vol. 79, No. 7, Jul., 1996, pp. 30-39, K. Nakamura, Elastic Wave Energy-Trapping and Its Application to Piezoelectric Devices.

Affiliated with

Also associated with

Rating

Piezoelectric vibratory gyroscope utilizing an energy-trapping v does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezoelectric vibratory gyroscope utilizing an energy-trapping v, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric vibratory gyroscope utilizing an energy-trapping v will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1205073