Multiple rotary variable differential transformer on common shaft with leakage flux compensation
US4345230A · kind A · utility
11Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1981 |
| Grant date | Aug 17, 1982 |
| Priority date | — |
| Expiry date | Feb 2, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2291
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotary variable differential transformer is provided comprising a pair of RVDT units disposed along a common shaft. A third RVDT is positioned along the shaft between the two units. The third RVDT comprises two pairs of secondary coils each pair being connected in series opposition. One of the coil pairs is connected to the secondary coils of one of the RVDT units and the other pair is connected to the secondary coils of the other RVDT unit. The third RVDT unit does not contain a primary and its secondary coils are excited only by the leakage flux from the other units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.