Electrodes and associated electronic circuits for a piezoelectric vibrating gyrometer
US8978473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2010 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Oct 20, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/5607
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The Coriolis-effect gyrometer has a tuning fork having two tines, which tuning fork is formed in a plate of piezoelectric crystal and provided with electrodes composed of ribbon conductors supported solely by the faces of the tines parallel to the plate. The drive excitation and drive detection electrodes are connected to an oscillator circuit, and the Coriolis detection electrodes are connected to a detection circuit. For each of the faces parallel to the plate of each of the tines the drive detection ribbon is disposed between the drive excitation ribbon and the Coriolis detection ribbon and is connected to the inverting input of an operational amplifier, the non-inverting input of which is connected to the electric ground, said operational amplifier forming part of the oscillator circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.