The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2014
Filed:
Nov. 14, 2012
Dirk Ettelt, Gelsenkirchen, DE;
Jerome Delamare, Grenoble, FR;
Gor Lebedev, Grenoble, FR;
Bernard Viala, Sassenage, FR;
Dirk Ettelt, Gelsenkirchen, DE;
Jerome Delamare, Grenoble, FR;
Gor Lebedev, Grenoble, FR;
Bernard Viala, Sassenage, FR;
Commissariat a l'Energie Atomique et aux Energies Alternatives, Paris, FR;
Institut Polytechnique de Grenoble, Grenoble, FR;
Abstract
A magnetic field vector sensor includes a substrate parallel to a plane, a support mobile relative to it and rotatable about a vertical rotation axis perpendicular to it, a magnetic field source generating a field having a moment in a non-perpendicular direction, the source being fixed to the support with no degree-of-freedom to exert torque on the support when a field to be measured is present, the field being non-collinear with the moment, a transducer to convert torque exerted on the support into a field amplitude of a component of the field along a measurement axis in the plane, wherein the source comprises a magnetostrictive permanent magnet for generating the field having a moment whose direction varies with stress on the magnet, and wherein the sensor further comprises a controllable device to reversibly modify the moment direction, and a stress generator to vary stress and hence moment direction.