FIXED INTERVAL BACKGROUND AUTO-ALIGNMENT FOR CLOSED LOOP INTERFEROMETRIC FIBER OPTIC GYROSCOPES
Assignee
AAI CORPORATION
Filed
Dec 31, 1997
Granted
Sep 14, 1999
Location
PARKTON MD US
Abstract
This invention relates to an improved method and mechanism by which to align closed loop interferometric fiber optic gyroscopes. Such method and means includes aligning the gyroscope periodically at fixed time intervals; providing multiplexed control of the gyroscope's internal phase rebalance control loop and gain scaling control loop, enabling one or the other, but never both simultaneously, and thereby eliminate acceleration-dependent errors; eliminating the 1 LSB phase discontinuity produced during each roll-over in the gyroscope by adding an offset to the output ramp produced by said serrodyne ramp generator; and providing a means and method to align the phase-rebalance loop gain for each production unit.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 12, 1998
Rescinded
Sep 3, 1998
Duration
22 days
Inventor
- 1JAMES JOSEPH JAKLITSCH
Record Details
- Patent number
- US 5953123
- Application
- 09002086
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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