Magnetostrictive torque sensor
US7658120B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2008 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Aug 8, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetostrictive torque sensor of the present invention is provided with: a magnetostrictive film; a detection coil; a current direction switching device; and an inversion device, wherein: when the current flows in a direction from one side to another side of the detection coil by the current direction switching device, the torque reacted to the shaft is detected based on the input signal of the inversion device; and when the current flows in a inverse direction from another side to one side of the detection coil by the current direction switching device, the torque reacted to the shaft is detected based on the output signal of the inversion device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.