Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1997-09-30
2000-07-18
Fuller, Benjamin R.
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
735033, 7350415, G01C 1900
Patent
active
060890878
ABSTRACT:
A vibrating gyroscope includes a vibration member in which first and second piezoelectric substrates are joined together. On the outside main surface of the first piezoelectric substrate, a first external electrode divided into six electrode sections is formed. On the outside main surface of the second piezoelectric substrate, a second external electrode is formed. By removing a part of the electrode sections disposed at the center, a capacitance difference C(L)-C(R) between the capacitance C(L) formed between one of the electrode sections disposed at the center and the second external electrode, and the capacitance C(R) formed between another electrode section disposed at the center and the second external electrode is adjusted.
REFERENCES:
patent: 4644793 (1987-02-01), Church
patent: 5412204 (1995-05-01), Nakamura
patent: 5824899 (1998-10-01), Ebara et al.
patent: 5837895 (1998-11-01), Fujimoto et al.
patent: 5847279 (1998-12-01), Piazza
Patent Abstracts of Japan, vol. 015, No. 379 (E-1115), Sep. 25, 1991 & JP 03 150915 A (Murata Mfg Co Ltd), Jun. 27, 1991.
Fujimoto Katsumi
Ishitoko Nobuyuki
Aw-Musse Abdullahi
Fuller Benjamin R.
Murata Manufacturing Co. Ltd.
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