Low cost INS
US11226203B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Jun 27, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This disclosure relates to an underground mining vehicle comprising a three-axis MEMS gyroscope rotatable about a rotation axis and a gyroscope interface that calculates a first rotation rate bias with respect to a first axis different to the rotation axis, a second rotation rate bias with respect to a second axis different to the first axis and different to the rotation axis, a rotation rate about the rotation axis based on the Earth rotation rate vector by correcting the rotational measurement data using the first rotation rate bias and the second rotation rate bias and a third rotation rate bias with respect to the rotation axis based on the calculated rotation rate about the rotation axis. A navigation unit receives the first rotation rate bias, the second rotation rate bias and the third rotation rate bias and calculates a pose of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.