Ring laser gyroscope dither drive system and method
US4981359A · kind A · utility
41Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Jun 19, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/70
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dither drive system for a ring laser gyroscope includes a computer, a digital to analog converter, a filter, and a power amplifier. The system senses the dither frequency of the gyro frame and produces a digital signal that corresponds to a specified dither drive signal and toggles the dither drive signal to drive the flexure at its resonant frequency. The dither drive system generates digital waveforms that approximate the sine function and digital waveforms that approximate the cosine function and applies the digital waveforms in quadrature to the flexure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.