Multioscillator ring laser gyroscope adaptive digitally controlled cavity length control system
US5208653A · kind A · utility
16Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Aug 6, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/665
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein is a Digitally Controlled Cavity Length Control System comprising, in a preferred embodiment, an adaptive servo-loop for cavity length, modulation depth and amplitude control, and of the multioscillator ring laser gyroscope; thereby, permitting the simultaneous control of these elements. The cavity length control of the multioscillator, by including a variable RF detector gain, allows the operation of the gyroscope in a slightly detuned fashion to minimize magnetic sensitivity. In this manner, the multioscillator gyroscope may be maintained at a stable operating point suitable for modeling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.