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1. WO2021004567 - SENSOR ASSEMBLY FOR SENSING A STEERING TORQUE AND AN ABSOLUTE ANGULAR POSITION, AND SENSOR DEVICE HAVING SAID SENSOR ASSEMBLY

Publication Number WO/2021/004567
Publication Date 14.01.2021
International Application No. PCT/DE2020/100460
International Filing Date 03.06.2020
IPC
G01L 3/10 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
3Measuring torque, work, mechanical power, or mechanical efficiency, in general
02Rotary-transmission dynamometers
04wherein the torque-transmitting element comprises a torsionally-flexible shaft
10involving electric or magnetic means for indicating
G01L 5/22 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
22for measuring the force applied to control members, e.g. control members of vehicles, triggers
B62D 6/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
6Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
08responsive only to input torque
10characterised by the means for sensing torque
B62D 15/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
15Steering not otherwise provided for
02Steering position indicators
G01D 5/14 2006.01
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
14influencing the magnitude of a current or voltage
CPC
B62D 15/0215
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
15Steering not otherwise provided for
02Steering position indicators ; ; Steering position determination; Steering aids
021Determination of steering angle
0215by measuring on the steering column
B62D 6/10
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
6Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
08responsive only to ; driver; input torque
10characterised by means for sensing ; or determining; torque
G01D 5/2053
GPHYSICS
01MEASURING; TESTING
DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
5Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
12using electric or magnetic means
14influencing the magnitude of a current or voltage
20by varying inductance, e.g. by a movable armature
204by influencing the mutual induction between two or more coils
2053by a movable non-ferromagnetic conductive element
G01L 3/102
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
3Measuring torque, work, mechanical power, or mechanical efficiency in general
02Rotary-transmission dynamometers
04wherein the torque-transmitting element comprises a torsionally-flexible shaft
10involving electrical or magnetic means for indicating
101involving magnetic or electromagnetic means
102involving magnetostictive means
G01L 3/104
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
3Measuring torque, work, mechanical power, or mechanical efficiency in general
02Rotary-transmission dynamometers
04wherein the torque-transmitting element comprises a torsionally-flexible shaft
10involving electrical or magnetic means for indicating
101involving magnetic or electromagnetic means
104involving permanent magnets
G01L 5/221
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
22for measuring the force applied to control members, e.g. control members of vehicles, triggers
221to steering wheels, e.g. for power assisted steering
Applicants
  • SCHAEFFLER TECHNOLOGIES AG & CO. KG [DE]/[DE]
Inventors
  • HINTZE, Matthias
  • WITTMANN, Bernd
Priority Data
10 2019 004 741.910.07.2019DE
10 2019 124 973.217.09.2019DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) SENSORANORDNUNG ZUR ERFASSUNG EINES LENKMOMENTES SOWIE EINER ABSOLUTEN WINKELPOSITION UND SENSORVORRICHTUNG MIT DIESER SENSORANORDNUNG
(EN) SENSOR ASSEMBLY FOR SENSING A STEERING TORQUE AND AN ABSOLUTE ANGULAR POSITION, AND SENSOR DEVICE HAVING SAID SENSOR ASSEMBLY
(FR) SYSTÈME DE CAPTEURS POUR LA DÉTECTION D'UN COUPLE DE BRAQUAGE AINSI QUE D'UNE POSITION ANGULAIRE ABSOLUE ET DISPOSITIF CAPTEUR POURVU DE CE SYSTÈME DE CAPTEURS
Abstract
(DE)
Die vorliegende Erfindung betrifft eine Sensoranordnung (01) zur Erfassung eines Lenkmomentes und einer absoluten Winkelposition eines sich entlang einer Achse (03) erstreckenden Lenkelements (02). Die Sensoranordnung (01) umfasst eine Platine (04), ein erstes Sensorelement (06) und ein zweites Sensorelement (07). Die Platine (04) weist eine senkrecht zur Achse (03) angeordnete Grundfläche (08) und mindestens eine dazu winklig verlaufende Flügelfläche (09) auf. Das erste Sensorelement (06) dient der Bestimmung des Lenkmomentes und besteht aus mindestens einem ersten Primärsensor (11) in Form eines magnetisch codierten Abschnitts auf dem Lenkelement (02) und einem dem ersten Primärsensor (11) gegenüberliegenden Sekundärsensor (12) zum Umwandeln der Änderung eines vom Primärsensor (11) generierten magnetischen Feldes in ein elektrisches Signal. Der auf der Flügelfläche (09) angeordnete Sekundärsensor (12) liegt dem Primärsensor (11) gegenüber. Das zweite Sensorelement (07) dient der Bestimmung der absoluten Winkelposition. Das zweite Sensorelement (07) umfasst ein an dem Lenkelement (02) angeordnetes Hauptzahnrad (13), welches mit mindestens zwei Zahnrädern (14) in Eingriff steht. Eines der beiden Zahnräder (14) weist eine um eins höhere Anzahl an Zähnen auf, als das andere Zahnrad (14). Jedes Zahnrad (14) weist ein Target (17) auf, welches jeweils einem auf der Grundfläche (08) der Platine (04) angeordneten Winkelsensor (16) gegenüberliegt. Weiterhin betrifft die Erfindung eine Sensorvorrichtung mit der Sensoranordnung (01).
(EN)
The present invention relates to a sensor assembly (01) for sensing a steering torque and an absolute angular position of a steering element (02) extending along an axis (03). The sensor assembly (01) comprises a circuit board (04), a first sensor element (06) and a second sensor element (07). The circuit board (04) has a base surface (08) arranged perpendicularly to the axis (03) and at least one wing surface (09) running at an angle to the base surface. The first sensor element (06) is used to determine the steering torque and consists of at least one first primary sensor (11) in the form of a magnetically coded portion on the steering element (02) and one secondary sensor (12) facing the first primary sensor (11) for converting the change in a magnetic field generated by the primary sensor into an electrical signal. The secondary sensor (12), which is arranged on the wing surface (09), faces the primary sensor (11). The second sensor element (07) is used to determine the absolute angular position. The second sensor element (07) comprises a main gear (13), which is arranged on the steering element (02) and meshes with at least two gears (14). One of the two gears (14) has one more tooth than the other gear (14). Each gear (14) has a target (17), and the targets face respective angle sensors (16) arranged on the base surface (08) of the circuit board (04). The invention further relates to a sensor device having the sensor assembly (01).
(FR)
La présente invention concerne un système de capteurs (01) pour la détection d'un couple de braquage et d'une position angulaire absolue d'un élément de direction (02) s'étendant le long d'un essieu (03). Le système de capteurs (01) comprend une plaque (04), un premier élément capteur (06) et un deuxième élément capteur (07). La plaque (04) présente une surface de base (08) disposée perpendiculairement à l'essieu (03) et au moins un profil d'aile (09) formant un angle par rapport à celle-ci. Le premier élément capteur (06) sert à déterminer le couple de braquage et est constitué par au moins un premier capteur primaire (11) sous forme d'une section à code magnétique sur l'élément de direction (02) et par un capteur secondaire (12) situé en face du premier capteur primaire (11) et destiné à convertir le changement d'un champ magnétique généré par le capteur primaire (11) en un signal électrique. Le capteur secondaire (12) disposé sur le profil d'aile (09) se situe en face du capteur primaire (11). Le deuxième élément capteur (07) sert à déterminer la position angulaire absolue. Le deuxième élément capteur (07) comprend une roue dentée principale (13) disposée au niveau de l'élément de direction (02), laquelle roue s'engrène avec au moins deux roues dentées (14). Une des deux roues dentées (14) présente un nombre de dents supérieur d'une unité à celui de l'autre roue dentée (14). Chaque roue dentée (14) présente une cible (17) qui se situe à chaque fois en face d'un capteur angulaire (16) disposé sur la surface de base (08) de la plaque (04). L'invention concerne en outre un dispositif capteur présentant le système de capteurs (01).
Also published as
Latest bibliographic data on file with the International Bureau