Measurement of three-dimensional welding torch orientation for manual arc welding process
US9975196B2 · kind B2 · utility
25Cited by
24References
22Claims
0Family size
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Key dates
| Filing date | Oct 30, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Nov 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P21/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and systems are provided herein for measuring 3D apparatus (e.g., manual tool or tool accessory) orientation. Example implementations use an auto-nulling algorithm that incorporates a quaternion-based unscented Kalman filter. Example implementations use a miniature inertial measurement unit endowed with a tri-axis gyro and a tri-axis accelerometer. The auto-nulling algorithm serves as an in-line calibration procedure to compensate for the gyro drift, which has been verified to significantly improve the estimation accuracy in three-dimensions, especially in the heading estimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.