APPARATUS FOR COMPENSATING FOR CHANGE IN LASER GYRO DITHER PICKOFF SCALE FACTOR
Assignee
Litton Systems
Filed as: LITTON SYSTEMS, INC.
Filed
May 4, 1990
Granted
Jun 28, 1994
Location
WEST HILLS CA US
Abstract
A dithered ring laser gyroscope is mounted upon a support, and a pickoff is positioned between the gyro and the support to produce signals representative of rotation angle between the support and the gyro. A correction means is used to subtract out the effect of the dither from the output signal to the gyro. The correction means includes feedback means in the correction-producing apparatus. That feedback means includes tracking compensation for both gain and phase variation of the pickoff and pickoff electronics. To prevent constant or slowly varying signals from affecting the operation of the apparatus, the invention uses a differentiator or a high pass filter between the compensated output signal and the feedback loops.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Feb 27, 1991
Rescinded
Nov 9, 1993
Duration
2 years, 8 months
Inventor
- 1DANIEL A. TAZARTES
Technology Domains
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Record Details
- Patent number
- US 5325173
- Application
- 07518044
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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