Method and apparatus for electronic cancellation of quadrature error
US7290435B2 · kind B2 · utility
41Cited by
10References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 6, 2006 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Feb 6, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/5726
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus are provided for detecting a rate of rotation. In one implementation, the method includes vibrating a proof mass at a pre-determined frequency in a drive axis. In response to a rotation, sensing an amount of deflection of the proof mass in an axis orthogonal to the drive axis, in which the amount of deflection is sensed as a change in charge. The method further includes generating a quadrature error cancellation signal to substantially cancel quadrature error from the sensed change in charge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.