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1. (WO2018011492) METHOD FOR ESTIMATING AN ANGULAR DEVIATION BETWEEN THE MAGNETIC AXIS AND A REFERENCE AXIS OF A MAGNETIC OBJECT

Pub. No.:    WO/2018/011492    International Application No.:    PCT/FR2017/051870
Publication Date: Fri Jan 19 00:59:59 CET 2018 International Filing Date: Tue Jul 11 01:59:59 CEST 2017
IPC: G01V 3/08
G01R 33/00
G01R 33/02
Applicants: ISKN
COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
Inventors: ALOUI, Saifeddine
VIAL, Franck
DUPRE LA TOUR, Jean-Marie
SAUVAGNAC, Guilhem
HAUTSON, Tristan
Title: METHOD FOR ESTIMATING AN ANGULAR DEVIATION BETWEEN THE MAGNETIC AXIS AND A REFERENCE AXIS OF A MAGNETIC OBJECT
Abstract:
The invention relates to a method for estimating an angular deviation (â) between a reference axis (Aref) of a magnetic object (2) and a magnetic axis co-linear to a magnetic moment (m) of said magnetic object (2), comprising the following steps: a) positioning (90; 110) the magnetic object (2) facing at least one magnetometer (Mi); b) rotating (110) said magnetic object (2) about said reference axis (Aref); c) measuring (110), during the rotation, the magnetic field (Bj(tj)), using the magnetometer (Mi); and d) estimating (130; 230) the angular deviation (â) from the magnetic field measurements (Bj(tj)).