Method and apparatus for generating driving signals for a vibratory rotation sensor
US6079270A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1998 |
| Grant date | Jun 27, 2000 |
| Priority date | — |
| Expiry date | Apr 30, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/567
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is a method and apparatus for generating a plurality of driving signals for a vibratory rotation sensor, the plurality of driving signals resulting in a plurality of readout signals from the vibratory rotation sensor. The method comprises the steps of determining a 2.times. tracking angle rate, transforming the 2.times. tracking angle rate into a trig function rate, transforming the trig function rate into a second trig function, and generating the plurality of driving signals utilizing the second trig function. The 2.times. tracking angle rate, determined from the plurality of readout signals, is the time rate of change of twice the tracking angle, the tracking angle being an angle which tracks the orientation angle of the standing-wave pattern of the vibratory rotation sensor. The trig function rate is the time rate of change of a first trig function, the first trig function being an approximation to a mathematically-exact (M-E) trig function. The M-E trig function is selected from the group consisting of the tangent of twice the tracking angle and the cotangent of twice the tracking angle. The second trig function is also an approximation to the M-E trig function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.