Fiber-optic gyroscope having angular velocity correction
US5396327A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 25, 1992 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Nov 25, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/721
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The light emitted from a laser diode is divided into two lights and the divided lights are introduced into a sensing loop such that the lights propagate through the sensing loop clockwise and counterclockwise. These lights are combined by a light receiving device and then a signal processing circuit calculates an angular velocity .OMEGA.'. The temperature near the laser diode is detected to obtain a correction value Kt, a current supplied to the laser diode is detected to obtain a correction value Ki and a corrected angular velocity .OMEGA. is obtained by calculating the product of the angular velocity with the correction values Ki and Kt, i.e., .OMEGA.=.OMEGA.'*Ki*Kt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.