Fiber optic gyroscope with deadband error reduction
US5999304A · kind A · utility
20Cited by
7References
21Claims
0Family size
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Key dates
| Filing date | Aug 4, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Aug 4, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A deadband error reducer for a fiber optic gyroscope, which is an offset modulation signal that averages the deadband producing error over the range of the feedback modulation signal provided to the phase modulator. Although the offset modulation signal may be introduced at any of several points in the feedback loop, the offset modulation must approximate a critical amplitude at the phase modulator. If the offset modulation is a signal having segments that are linear with time, the critical amplitude of this signal will be 2.pi..
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.