Method and apparatus for determining the position of an armature in an electromagnetic actuator using observer theory
US5424637A · kind A · utility
28Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1993 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | Mar 15, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/1855
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electromagnetic actuators that include a coil and an armature are used in a number of applications. It is desirable to determine the position of the armature with respect to the coil without the use of external sensors. Accordingly, an apparatus is provided that determines the position of the armature with respect to the coil in response to the coil current and voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.