Field calibration for torsional vibration sensor
US11733111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2021 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Oct 27, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H1/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for calibrating an output of a torsional vibration transducer can include: providing a torsional vibration transducer proximate to a body of a shaft configured to rotate along an axis of rotation, the torsional vibration transducer configured to measure a torsional vibration of the shaft; actuating the shaft to cause rotation of the shaft; while the shaft rotates, acquiring, using the torsional vibration transducer, a plurality of zero-stress measurements of the shaft across a plurality of gaps between the torsional vibration transducer and the shaft; calculating at least one calibration coefficient using the plurality of zero-stress measurements; and calibrating the output of the torsional vibration transducer according to the at least one calibration coefficient to reduce a sensitivity of the torsional vibration transducer to changes in gap between the torsional vibration transducer and the shaft when the torsional vibration of the shaft is measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.