Inductive displacement sensor including an autotransformer and an inductance effecting means extending between 90 and 180 electrical degrees
US5521494A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Jan 19, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inductive displacement sensor has first and second elements which define a path for movement. The first element has coil portions which interact with an inductance affecting part of the second element so that the inductances of the coil portions vary with movement of the inductance affecting part, only some of the coil portions being affected by the inductance affecting part at any time. The coil portions are arranged in two series connections, each series connection being at least two coil portions electrically connected in series. Coil portions of the two series connections are then arranged alternately. In this way, substantially sinusoidal output signals may be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.