Dynamic attitude measurement sensor and method
US6421622B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Jul 16, 2002 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/185
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system senses the attitude of an accelerating object. Attitude sensing is accomplished by measuring acceleration in three orthogonal axes and measuring angular rate about each such axis to compute attitude accurately relative to a vertical axis. The system includes accelerometers and angular rate sensors for sensing the acceleration and the angular rate, respectively, of the object. A processor updates a quarternion representation of attitude based upon the angular rate of the object and a corrective rate signal to obtain the attitude of the object. Temperature compensation and frequency compensation may also be performed to update the quarternion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.