Position measuring device employing primary and auxiliary magnetic fields
US5619132A · kind A · utility
9Cited by
10References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1994 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Apr 7, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic measuring system having a scale and a scanning unit, the scanning unit having a plurality of magneto-resistive elements which are disposed at an angle .beta. with respect to the measuring direction. The scanning unit generates an auxiliary magnetic field which acts perpendicularly to the measuring direction so as to magnetically bias the magneto-resistive elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.