State estimator for rejecting noise and tracking and updating bias in inertial sensors and associated methods
US9127947B2 · kind B2 · utility
3Cited by
11References
21Claims
0Family size
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Key dates
| Filing date | May 18, 2009 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Feb 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2829
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and system for tracking and updating bias in an inertial sensor by determining a maximum bias drift and a noise band for a sensor, determining a prior bias value of the sensor, and measuring a current bias value of the sensor. The method and system can further include calculating a bias difference between the prior bias value and the current bias value, and updating the prior bias value with the current bias value if the current bias value is within the noise band and the bias difference is less than or equal to the maximum bias drift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.