Vibrator including piezoelectric electrodes or detectors arranged to be non-parallel and non-perpendicular to coriolis force direction and vibratory gyroscope using the same
US5874674A · kind A · utility
9Cited by
11References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 11, 1996 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Jan 11, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/5663
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The vibrator includes, for example, a triangular prism shaped vibrating body. On each of three side faces of the vibrating body, piezoelectric elements are formed respectively. The vibrating body makes bending vibration by giving a driving signal to one or two piezoelectric elements. The vibrator is used in a vibratory gyroscope. In this case, for example, one piezoelectric element is used for vibrating the vibrator. When a rotating force is applied to the vibratory gyroscope, a Coriolis force is exerted to produce output voltages on the remaining two piezoelectric elements corresponding to the rotational angular velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.