Laser gyro dither drive
US5225889A · kind A · utility
13Cited by
1References
64Claims
0Family size
Inventors
Key dates
| Filing date | Dec 11, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Dec 11, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A direct digital dither drive for a laser gyro dither motor including a digital microcomputer which controls the dithering of a laser gyro to prevent lock in of the laser beams. The digital drive senses a dither position and schedules internal A/D conversions using an A/D conversion arbitration scheme. The period frequency and location of the minimum and maximum drive are determined using the microcontroller. Accurate dither drive is accomplished using a digital analog feedback system which compensates for real time changes in dither pickoff and dither drive components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.