公开(公告)号：US20200304948A1

公开(公告)日：2020-09-24

申请号：US16822758

申请日：2020-03-18

Applicant: Thales

Inventor： Jean-Claude Bourland ,  Frédéric Sahliger

IPC: H04W4/02 ,  G06F17/16 ,  G01B7/30 ,  G01B7/004

Abstract: A method for estimating the harmonization values of a magnetometer installed in a mobile machine, said magnetometer being associated with its reference coordinate system XM, YM, ZM, said method, implemented by an electronic device, comprising acquiring magnetic field values measured by the magnetometer and determining the horizontal harmonization (hx, hy) by: estimating a first angle equal to the angle between XM and the large axis of an ellipse, defined in the plane comprising the two axes XM, ZM, by said acquired field values; determining hy as being equal to said first estimated angle, estimating a second angle equal to the angle between YM and the large axis of an ellipse defined, in the plane comprising the two axes YM, ZM, by said acquired field vector values; and determining—hx as being equal to said second estimated angle.

公开(公告)号：US12044698B2

公开(公告)日：2024-07-23

申请号：US17795177

申请日：2021-01-29

Applicant: THALES

Inventor： Philippe Guichard ,  Jean-Pierre Schlotterbeck ,  Frédéric Sahliger ,  Jean-Claude Bourland ,  Philippe Rondeau

IPC: G01P21/00 ,  G01P5/16 ,  G01P13/02

CPC classification number: G01P21/00 ,  G01P5/16 ,  G01P13/025

Abstract: The present invention relates to a method for self-testing an angle-of-attack probe comprising the steps of controlling an angular excitation of a rotary element that is rotatable about its equilibrium position according to known excitation characteristics; acquiring angular measurements relating to the rotation of the rotary element, determining a parasitic torque applied to the rotary element on the basis of the angular measurements and of the excitation characteristics; comparing at least one component of the parasitic torque with at least one predetermined threshold and detecting an operating fault in the probe when said component exceeds the predetermined threshold.

公开(公告)号：US11343642B2

公开(公告)日：2022-05-24

申请号：US16822758

申请日：2020-03-18

Applicant: Thales

Inventor： Jean-Claude Bourland ,  Frédéric Sahliger

IPC: H04W4/02 ,  G01B7/004 ,  G01B7/30 ,  G06F17/16 ,  G01C25/00 ,  G01C21/08 ,  G01C21/20 ,  G01C17/38 ,  G01C21/16

Abstract: A method for estimating the harmonization values of a magnetometer installed in a mobile machine, said magnetometer being associated with its reference coordinate system XM, YM, ZM, said method, implemented by an electronic device, comprising acquiring magnetic field values measured by the magnetometer and determining the horizontal harmonization (hx, hy) by: estimating a first angle equal to the angle between XM and the large axis of an ellipse, defined in the plane comprising the two axes XM, ZM, by said acquired field values; determining hy as being equal to said first estimated angle, estimating a second angle equal to the angle between YM and the large axis of an ellipse defined, in the plane comprising the two axes YM, ZM, by said acquired field vector values; and determining—hx as being equal to said second estimated angle.