Hall effect, shaft angular position sensor with asymmetrical rotor
US6288535A · kind A · utility
Inventor
Key dates
| Filing date | Jul 6, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Jul 6, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/147
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A shaft angular position sensor having a DC output voltage has a magnetic housing into which are mounted a Hall effect device, a bobbin-winding assembly and a rotor. The bobbin-winding assembly is a hollow cylindrical coil form made of non-magnetic material about which are wound two excitation coils connected in series opposition. An elongated magnetic core is disposed for rotation within the hollow bobbin. The core is an axial section of a magnetic cylinder which serves to direct two opposing DC magnetic flux flows through the Hall effect device. The output voltage generated by the Hall effect device is indicative of the angular position of the magnetic core relative to the bobbin winding assembly when a DC voltage is applied to the coils.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.