Inductive sensor for angular measurement of the position of a moving part and measuring method using such a sensor
US9322636B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Dec 4, 2013 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | May 22, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/2275
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inductive sensor includes a primary winding, two secondary windings and a moveable target, the primary winding being centered about a central axis and carrying a high-frequency alternating current which can induce a voltage in secondary windings, the secondary windings also being centered about the central axis and made up of a number k of substantially identical loops, which are successively crossed and arranged opposite the primary winding. In this case, the target is made up of a part having p=1 angular sector with an angular opening. The opening of the angular sector of the target is less than that of a loop of secondary winding with a deviation calculated such as to eliminate the fourth harmonic of the linearity deviation Fourier decomposition, between the measured angular value and real angular value for the position of the target over the measurement course.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.