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DE102004027954A1 - Inductive angle measurement sensor, e.g. for measuring the torsion angle of a steering column, has inductively coupled rotors mounted at a distance from each other on a torsion bar - Google Patents

Inductive angle measurement sensor, e.g. for measuring the torsion angle of a steering column, has inductively coupled rotors mounted at a distance from each other on a torsion bar Download PDF

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Publication number
DE102004027954A1
DE102004027954A1 DE102004027954A DE102004027954A DE102004027954A1 DE 102004027954 A1 DE102004027954 A1 DE 102004027954A1 DE 102004027954 A DE102004027954 A DE 102004027954A DE 102004027954 A DE102004027954 A DE 102004027954A DE 102004027954 A1 DE102004027954 A1 DE 102004027954A1
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DE
Germany
Prior art keywords
rotor
angle sensor
torsion
stator
sensor according
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Granted
Application number
DE102004027954A
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German (de)
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DE102004027954B4 (en
Inventor
Henning Irle
Norbert Kost
Franz-Josef Schmidt
Dirk Galen Circle Ann Arbor Hobein
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Hella GmbH and Co KGaA
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Hella KGaA Huek and Co
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Priority to DE102004027954.3A priority Critical patent/DE102004027954B4/en
Publication of DE102004027954A1 publication Critical patent/DE102004027954A1/en
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Publication of DE102004027954B4 publication Critical patent/DE102004027954B4/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING 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
    • G01D5/00—Mechanical 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
    • G01D5/12—Mechanical 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 using electric or magnetic means
    • G01D5/14—Mechanical 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 using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical 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 using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/204—Mechanical 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 using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
    • G01D5/2073—Mechanical 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 using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by movement of a single coil with respect to two or more coils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D15/00—Steering not otherwise provided for
    • B62D15/02—Steering position indicators ; Steering position determination; Steering aids
    • B62D15/021—Determination of steering angle
    • B62D15/0215—Determination of steering angle by measuring on the steering column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
    • B62D6/10—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque characterised by means for sensing or determining torque
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/105—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving inductive means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/22—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
    • G01L5/221—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers to steering wheels, e.g. for power assisted steering

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

Inductive angle measurement sensor comprises: a stator (1) with at least an excitation element (4) and at least a first receiver element (4); a first rotor (2); a second rotor (3) that has at least an inductive coupling element (10) and; a torsion element (9) on which the rotors are arranged at a distance from each other.

Description

Die Erfindung betrifft einen induktiven Winkelsensor, insbesondere für die Messung von Torsionswinkeln zum Beispiel an Lenksäulen in Kraftfahrzeugen.The The invention relates to an inductive angle sensor, in particular for the measurement of torsion angles, for example, on steering columns in motor vehicles.

Aus dem Stand der Technik, zum Beispiel aus der Druckschrift mit der Veröffentlichungsnummer DE 197 38 893 A1 sind induktive Winkelsensoren bekannt. Derartige induktive Winkelsensoren weisen Erregerspulen und mehrere um einen vorgegebenen Winkelbetrag gegeneinander versetzt angeordnete Empfangsspulen auf. Die Erregerspule und die Empfangsspulen sind dazu auf einem Stator angeordnet. Ein Rotor, dessen Drehwinkel in Bezug auf den Stator durch den Winkelsensor zu erfassen ist, umfasst ein induktives Koppelelement, und koppelt Signale in die Empfangsspulen des Stators ein, die von dem Drehwinkel des Rotors abhängen. Die Empfangsspulen liefern dann Ausgangssignale, die ausgewertet werden können, um die Winkelposition des Rotors im Bezug auf den Stator zu ermitteln.From the prior art, for example from the publication with the publication number DE 197 38 893 A1 Inductive angle sensors are known. Such inductive angle sensors have exciting coils and a plurality of reception coils arranged offset from each other by a predetermined angle. The exciter coil and the receiver coils are arranged on a stator for this purpose. A rotor whose angle of rotation with respect to the stator is to be detected by the angle sensor comprises an inductive coupling element, and couples signals into the receiving coils of the stator, which depend on the rotational angle of the rotor. The receiver coils then provide output signals that can be evaluated to determine the angular position of the rotor with respect to the stator.

Ein solcher Winkelsensor kann beispielsweise dazu verwendet werden, um die Torsion eines Stabes zu messen. Dazu wird der Rotor beabstandet zu dem Stator auf dem Stab drehfest befestigt. Die Verdrehung des Stabs kann dann erfasst werden. Problematisch ist eine Erfassung des Torsionswinkels jedoch dann, wenn der Stab nicht nur in sich verdreht, sondern auch gegenüber der Umgebung gedreht wird. Dieses ist üblicherweise bei einer Lenksäule der Fall. Problematisch bei der Verwendung des Winkelsensors an einem sich drehenden Torsionsstab ist, dass der Stator nicht gegenüber anderen elektrischen Einheiten, mit denen er verbunden ist, und die er mit den Sensorsignalen versorgen soll, ruht. Der Stator dreht sich vielmehr gegenüber den Einheiten, welche Schwierigkeiten für die elektrische Versorgung des Winkelsensors und mit der Übermittelung der Sensorsignale nach sich zieht. Eine Möglichkeit der Verbindung des Winkelsensors und insbesondere des Stators des Winkelsensors ist, den Stator über ein Flachbandkabel, welches in verschiedene Richtungen mehrfach auf- und abgewickelt werden kann, anzuschließen. Die Verbindung bei einem Flachbandkabel zieht jedoch immer wieder Probleme mit Kabelbrüchen nach sich.One such angle sensor can be used, for example, to measure the torsion of a rod. For this purpose, the rotor is spaced attached to the stator rotatably on the rod. The twist of the Stabs can then be detected. The problem is a detection the torsion angle, however, if the rod not only in itself twisted, but also opposite the environment is turned. This is usually the case with a steering column. Problematic with the use of the angle sensor on a rotating torsion bar is that the stator is not opposite to others electrical units with which he is connected, and he with to supply the sensor signals, rests. The stator turns rather across from the units, which difficulties for the electrical supply of the angle sensor and with the transmission of the Sensor signals entails. One way of connecting the Angle sensor and in particular the stator of the angle sensor is, the stator over Ribbon cable, which runs several times in different directions and can be settled. The connection at one Ribbon cable, however, repeatedly struggles with cable breakage problems yourself.

Die Zuverlässigkeit des Anschlusses beim Flachbandkabel ist nicht immer gegeben.The reliability the connection at the ribbon cable is not always given.

Hier setzt die vorliegende Erfindung an.Here uses the present invention.

VORTEILE DER ERFINDUNGADVANTAGES OF THE INVENTION

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen induktiven Winkelsensor vorzuschlagen, der für die Messung von Torsionswinkeln geeignet ist, wobei das tordierende Element rotieren kann.Of the present invention is based on the object, an inductive To propose an angle sensor suitable for the measurement of torsion angles is where the twisting element can rotate.

Diese Aufgabe wird durch einen erfindungsgemäßen Winkelsensor nach Anspruch 1 gelöst. Weiterbildungen und Konkretisierungen eines solchen Winkelsensors finden sich in den Unteransprüchen.These The object is achieved by an angle sensor according to the invention 1 solved. further developments and concretizations of such an angle sensor can be found in the dependent claims.

Ein erfindungsgemäßer Winkelsensor weist demgemäß einen Stator mit zumindest einem Erregerelement und einem ersten Empfangselement auf. Er umfasst ferner einen ersten Rotor und neben diesem ersten Rotor einen zweiten Rotor, der zumindest ein induktives Koppelelement umfasst. Der erste Rotor und der zweite Rotor sind auf einem Torsionselement beabstandet voneinander angeordnet. Bei der erfindungsgemäßen Anordnung sind nur die beiden Rotoren auf dem Torsionselement angeordnet, während der Stator ortsfest ist. Damit bereitet die elektrische Anbindung des Stators keine Probleme.One Inventive angle sensor accordingly has a Stator with at least one excitation element and a first receiving element on. It further comprises a first rotor and adjacent to this first Rotor, a second rotor, the at least one inductive coupling element includes. The first rotor and the second rotor are on a torsion element spaced apart from each other. In the inventive arrangement only the two rotors are arranged on the torsion element, while the stator is stationary. This prepares the electrical connection the stator no problems.

Der erste Rotor eines erfindungsgemäßen Winkelsensors kann zumindest ein zweites Empfangselement umfassen. Dieses zweite Empfangselement kann dann mit dem Koppelelement des zweiten Rotors zusammenwirken. Es ist dadurch möglich, dass die Verdrehung des ersten Rotors relativ zum zweiten Rotor über das Zusammenspiel von Koppelelement und Empfangselement und Erregerelement des Stators ermittelt wird.Of the first rotor of an angle sensor according to the invention may include at least a second receiving element. This second Receiving element can then with the coupling element of the second rotor interact. It is possible by that the rotation of the first rotor relative to the second rotor via the Interaction of coupling element and receiving element and excitation element of the Stators is determined.

Ein erfindungsgemäßer Winkelsensor kann ferner Elemente zur vorteilhaft drahtlosen und berührungsfreien Übertragung einer Versorgungsspannung vom Stator zum ersten Rotor aufweisen. Damit können elektronische Elemente, die vorzugsweise auf dem ersten Rotor angeordnet sein können, mit elektrischer Energie versorgt werden. Diese elektronischen Elemente können beispielsweise zur Auswertung von dem zweiten Empfangselement gelieferter Signale dienen.One Inventive angle sensor may further include elements for advantageously wireless and non-contact transmission a supply voltage from the stator to the first rotor. With that you can electronic elements, preferably arranged on the first rotor could be, be supplied with electrical energy. These electronic elements can for example, for evaluation supplied by the second receiving element Serve signals.

Der erste Rotor umfasst vorteilhaft zumindest ein Sendeelement für eine berührungsfreie Übertragung der von den elektronischen Elementen zur Auswertung erzeugten Signale. Das Sendeelement kann dann die von den elektronischen Elementen erzeugten Signale zum Stator übertragen.Of the first rotor advantageously comprises at least one transmitting element for a non-contact transmission the signals generated by the electronic elements for evaluation. The transmitting element may then be that of the electronic elements transmitted signals transmitted to the stator.

Das Sendeelement auf dem ersten Rotor kann vorteilhaft zumindest eine Spule umfassen. Ebenso können die Empfangselemente des Stators und des ersten Rotors Spulen sein. Auch das Erregerelement des Stators kann eine Spule sein. Die Spule kann zugleich das Empfangselement des Stators bilden.The transmitting element on the first rotor can advantageously comprise at least one coil. Likewise, the receiving elements of the stator and the first rotor coils. The exciter element of the stator can also be a coil. The coil can also form the receiving element of the stator.

Der erste Rotor kann zwischen dem Stator und dem zweiten Rotor angeordnet sein. Insbesondere bei einem sehr dünn ausgeführten zweiten Rotor kann der zweite Rotor auch zwischen dem Stator und dem ersten Rotor angeordnet sein. Ferner kann der induktive Winkelsensor so eingerichtet sein, dass auch der Drehwinkel zwischen dem ersten Rotor und dem Stator erfasst wird, wobei dazu die schon vorhandenen Erregerelemente, Empfangselemente und Spulen genutzt werden können.Of the first rotor may be disposed between the stator and the second rotor be. In particular, in a very thin running second rotor of the second rotor also disposed between the stator and the first rotor be. Furthermore, the inductive angle sensor may be arranged that also the angle of rotation between the first rotor and the stator is detected, with the already existing exciter elements, Receiving elements and coils can be used.

ZEICHNUNGENDRAWINGS

Ein Beispiel für einen erfindungsgemäßen induktiven Winkelsensor ist anhand der Zeichnung näher beschrieben. Darin zeigtOne example for an inductive according to the invention Angle sensor is described in detail with reference to the drawing. It shows

1 den schematischen Aufbau des erfindungsgemäßen Winkelsensors. 1 the schematic structure of the angle sensor according to the invention.

BESCHREIBUNG DER AUSFÜHRUNGSBEISPIELEDESCRIPTION OF THE EMBODIMENTS

Der in der 1 dargestellte erfindungsgemäße Winkelsensor kann dazu benutzt werden, um die Torsion eines Torsionselementes, welches durch einen Torsionsstab 9 gebildet wird, zu messen. Dazu sind auf dem Torsionsstab 9 beabstandet voneinander und drehfest ein erster Rotor 2 und ein zweiter Rotor 3 befestigt. Mittels des Sensors kann der Torsionswinkel zwischen den Befestigungsorten des ersten Rotors 2 und des zweiten Rotors 3 bestimmt werden. Ferner umfasst der Winkelsensor neben dem ersten Rotor 2, dem zweiten Rotor 3 und dem Torsionsstab 9 einen Stator 1. Durch diesen Stator 1 ist der Torsionsstab hindurchgeführt. Der Torsionsstab 9 kann sich dabei gegenüber dem Stator 1 frei drehen.The Indian 1 shown angle sensor according to the invention can be used to the torsion of a torsion element, which by a Torsionsstab 9 is formed to measure. These are on the torsion bar 9 spaced from each other and rotatably a first rotor 2 and a second rotor 3 attached. By means of the sensor, the torsion angle between the mounting locations of the first rotor 2 and the second rotor 3 be determined. Furthermore, the angle sensor comprises in addition to the first rotor 2 , the second rotor 3 and the torsion bar 9 a stator 1 , Through this stator 1 the torsion bar is passed. The torsion bar 9 can be compared to the stator 1 rotate freely.

Der erfindungsgemäße Winkelsensor kann beispielsweise in einem Kraftfahrzeug eingesetzt werden, um die durch einen Fahrzeugführer aufgebrachte und auf die Lenkung einwirkende Kraft zu bestimmen. Dazu ist der Torsionsstab 9 in der Lenksäule der Lenkung angeordnet. Durch ein Verdrehen des Lenkrads übt der Fahrzeugführer eine Kraft auf den Torsionsstab aus, der zu einer Torsion des Torsionsstabs führt. Die Torsion des Torsionsstabs wird mittels des Winkelsensors erfasst und an ein Steuergerät für eine Servolenkung als Eingangsgröße weitergegeben. Aufgrund der Eingangsgröße ermittelt das Steuergerät anschließend die Kraft, welche auf die Räder einwirken muss, um den gewünschten Einschlag an den Rädern zu erreichen. Während der erste Rotor 2 und der zweite Rotor 3 dabei drehfest an dem Torsionsstab 9 und damit an der Lenksäule befestigt sind, ist der Stator 1 drehfest zur Karosserie angebracht.The angle sensor according to the invention can be used for example in a motor vehicle to determine the force applied by a driver and acting on the steering force. This is the torsion bar 9 arranged in the steering column of the steering. By turning the steering wheel, the driver exerts a force on the torsion bar, which leads to a torsion of the torsion bar. The torsion of the torsion bar is detected by means of the angle sensor and passed to a control unit for a power steering as input. Based on the input quantity, the control unit then determines the force which must act on the wheels in order to achieve the desired impact on the wheels. While the first rotor 2 and the second rotor 3 while rotatably on the torsion bar 9 and thus attached to the steering column, is the stator 1 rotatably attached to the body.

Der Stator 1 umfasst eine Leiterplatte, auf welcher eine Spule 4 angebracht ist, die ein Erregerelement, ein Übertragungselement für eine Versorgungsspannung und ein Empfangselement bildet. Der Stator 1 umfasst ferner einen ASIC 8, der ein elektronisches Element zur Verarbeitung und Auswertung von Sensorsignalen bildet.The stator 1 includes a circuit board on which a coil 4 is attached, which forms an excitation element, a transmission element for a supply voltage and a receiving element. The stator 1 also includes an ASIC 8th which forms an electronic element for processing and evaluating sensor signals.

Der erste Rotor 2 umfasst ebenfalls eine Leiterplatte, auf welcher zwei Spulen 5, 6 und ein als elektronisches Element dienender ASIC 7 angeordnet sind. Von den beiden Spulen dient die eine Spule 5 als Sendeelement und Empfangselement, während die andere Spule 6 als Empfangselement dient. Das ASIC 7 ist mit der einen Spule 5 verbunden und koppelt das zu sendende Signal in die Spule 5 ein. Das von der Spule 5 gesendete Signal 5 wird von der Spule 4 des Stators 1 empfangen. Das ASIC 7 wird von einer elektrischen Spannung versorgt, die mittels der Spule 4 des Stators 1, auf den ersten Rotor 2 übertragen wird. Die dazu von dem Stator 1 mittels der Spule 4 übertragene elektrische Energie wird über die Spule 5 in das ASIC eingekoppelt.The first rotor 2 also includes a circuit board on which two coils 5 . 6 and an ASIC serving as an electronic element 7 are arranged. Of the two coils which serves a coil 5 as transmitting element and receiving element while the other coil 6 serves as a receiving element. The ASIC 7 is with the one coil 5 Connects and couples the signal to be sent in the coil 5 one. That from the coil 5 sent signal 5 gets off the coil 4 of the stator 1 receive. The ASIC 7 is supplied by an electrical voltage by means of the coil 4 of the stator 1 , on the first rotor 2 is transmitted. The one from the stator 1 by means of the coil 4 transmitted electrical energy is transmitted through the coil 5 coupled into the ASIC.

Der zweite Rotor 3 umfasst ebenfalls eine Leiterplatte, die drehfest mit dem Torsionsstab 9 verbunden ist. Auf der Leiterplatte ist im Wesentlichen eine Leiterschleife 10 angebracht. In diese Leiterschleife wird durch den Strom durch die Spule 4 des Stators 1 eine Spannung induziert, wodurch es zu einem Stromfluss in der Leiterschleife 10 kommt. Dieser Stromfluss führt zu einem elektromagnetischen Feld, welches von der als Empfangselement wirkende Spule 6 des ersten Rotors 2 aufgenommen wird. Das aus dem von der Spule 6 aufgenommene Signal wird dem ASIC 7 zugeführt, in dem die aus dem Signal gewonnene Information ausgewertet wird. Diese Information wird dann über die Spule 5 an den Stator 1 gesendet. In dem Stator 1 wird die gewonnene Information von der als Empfangselement wirkenden Spule 4 aufgenommen und dem ASIC 8 zugeführt.The second rotor 3 also includes a printed circuit board which is non-rotatable with the torsion bar 9 connected is. On the circuit board is essentially a conductor loop 10 appropriate. In this conductor loop is through the current through the coil 4 of the stator 1 induces a voltage, causing a current flow in the conductor loop 10 comes. This current flow leads to an electromagnetic field, which acts from the coil acting as a receiving element 6 of the first rotor 2 is recorded. That's from the coil 6 recorded signal is the ASIC 7 fed, in which the information obtained from the signal is evaluated. This information is then transmitted through the coil 5 to the stator 1 Posted. In the stator 1 The information obtained is from the acting as a receiving element coil 4 recorded and the ASIC 8th fed.

Die Leiterschleife 10 des zweiten Rotors 3 ist mäanderförmig ausgeführt, wie es aus den aus dem Stand der Technik bekannten induktiven Winkelsensoren bekannt ist.The conductor loop 10 of the second rotor 3 is designed meandering, as is known from the known from the prior art inductive angle sensors.

Der erste Rotor eines erfindungsgemäßen Winkelsensors hat mehrere Funktionen. Zum einen erfasst er die Drehwinkeldifferenz zwischen dem ersten Rotor 2 und dem zweiten Rotor 3. Diese Winkeldifferenz kann er wie ein Stator bei herkömmlichen Winkelsensoren mit dem Empfangselement erfassen, das durch die Spule 6 gebildet wird. Das erfasste Signal wird auf dem ersten Rotor 2 mittels des ASICS 7 aufbereitet und über die andere Spule 5 an den Stator gesendet. Der erste Rotor hat damit zum einen eine Empfangsfunktion, eine Verarbeitungsfunktion und eine Sendefunktion.The first rotor of an angle sensor according to the invention has several functions. On the one hand, it detects the rotational angle difference between the first rotor 2 and the second rotor 3 , He can detect this angular difference as a stator in conventional angle sensors with the receiving element that passes through the coil 6 is formed. The detected signal is on the first rotor 2 by means of the ASI CS 7 prepared and over the other coil 5 sent to the stator. The first rotor thus has a reception function, a processing function and a transmission function.

Claims (10)

Induktiver Winkelsensor, insbesondere für die Messung von Torsionswinkeln, zum Beispiel an Lenksäulen: – mit einem Stator (1), der zumindest ein Erregerelement (4) und zumindest ein erstes Empfangselement (4) umfasst, – mit einem erster Rotor (2), – mit einem zweiten Rotor (3), der zumindest ein induktives Koppelelement (10) umfasst, und mit einem Torsionselement (9) auf dem der erste Rotor (2) und der zweite Rotor (3) beabstandet voneinander angeordnet sind.Inductive angle sensor, in particular for the measurement of torsion angles, for example on steering columns: - with a stator ( 1 ), the at least one excitation element ( 4 ) and at least one first receiving element ( 4 ), - with a first rotor ( 2 ), - with a second rotor ( 3 ), the at least one inductive coupling element ( 10 ), and with a torsion element ( 9 ) on which the first rotor ( 2 ) and the second rotor ( 3 ) are spaced from each other. Winkelsensor nach Anspruch 1, dadurch gekennzeichnet, dass der erste Rotor (2) zumindest ein zweites Empfangselement (6) umfasst.Angle sensor according to claim 1, characterized in that the first rotor ( 2 ) at least one second receiving element ( 6 ). Winkelsensor nach Anspruch 2, dadurch gekennzeichnet, dass das zweite Empfangselement (6) mit dem Koppelelement (10) zusammenwirkt.Angle sensor according to claim 2, characterized in that the second receiving element ( 6 ) with the coupling element ( 10 ) cooperates. Winkelsensor nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Winkelsensor Elemente (4) zur vorteilhaft drahtlosen und berührungsfreien Übertragung einer Versorgungsspannung vom Stator (1) zum ersten Rotor (2) umfasst.Angle sensor according to one of claims 1 to 3, characterized in that the angle sensor elements ( 4 ) for advantageously wireless and non-contact transmission of a supply voltage from the stator ( 1 ) to the first rotor ( 2 ). Winkelsensor nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der erste Rotor (2) elektronische Elemente (7) zur Auswertung der von dem zweiten Empfangselement (6) gelieferten Signale umfasst.Angle sensor according to one of claims 1 to 4, characterized in that the first rotor ( 2 ) electronic elements ( 7 ) for the evaluation of the second receiving element ( 6 ) includes signals supplied. Winkelsensor nach Anspruch 5, dadurch gekennzeichnet, dass der erste Rotor (2) zumindest ein Sendeelement (5) für eine berührungsfreie Übertragung der von dem elektronischen Element (7) des ersten Rotors (2) erzeugten Signalen zum Stator (1) umfasst.Angle sensor according to claim 5, characterized in that the first rotor ( 2 ) at least one transmitting element ( 5 ) for non-contact transmission of the information from the electronic element ( 7 ) of the first rotor ( 2 ) generated signals to the stator ( 1 ). Winkelsensor nach Anspruch 5, dadurch gekennzeichnet, dass das Sendeelement (5) auf dem ersten Rotor (2) zumindest eine Spule (5) umfasst.Angle sensor according to claim 5, characterized in that the transmitting element ( 5 ) on the first rotor ( 2 ) at least one coil ( 5 ). Winkelsensor nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Empfangselemente Spulen (6) umfassen.Angle sensor according to one of claims 1 to 7, characterized in that the receiving elements coils ( 6 ). Winkelsensor nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Erregerelemente Spulen (4) umfassen.Angle sensor according to one of claims 1 to 8, characterized in that the exciter elements coils ( 4 ). Winkelsensor nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Torsionselement (9) ein Torsionsstab (9) ist.Angle sensor according to one of claims 1 to 9, characterized in that the torsion element ( 9 ) a torsion bar ( 9 ).
DE102004027954.3A 2004-06-08 2004-06-08 Inductive protractor, especially for the measurement of torsion angles Expired - Fee Related DE102004027954B4 (en)

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DE102008012922B4 (en) 2008-03-06 2019-05-29 HELLA GmbH & Co. KGaA Inductive angle sensor
DE102008012923A1 (en) 2008-03-06 2009-09-10 Hella Kgaa Hueck & Co. Inductive angle sensor for use in motor vehicle for determining position of actuators, has control- and evaluation unit, and conductor structure exhibiting layer within outer contour area and filled with casting material
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DE102010009497A1 (en) 2010-02-26 2011-09-01 Hella Kgaa Hueck & Co. Sensor for determining rotational angle of shaft for rotor mounted in e.g. motor car, has fixing element arranged so as to fix rotor to cabinet so that rotating movement of rotor is not enabled in shaft mounted state
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WO2017081282A1 (en) * 2015-11-12 2017-05-18 Hella Kgaa Hueck & Co. Apparatus for detecting a rotational movement
CN108351223B (en) * 2015-11-12 2021-06-01 黑拉有限责任两合公司 Device for detecting rotational movement
CN110785632A (en) * 2017-06-23 2020-02-11 罗伯特·博世有限公司 Rotation angle sensor
WO2018234108A1 (en) * 2017-06-23 2018-12-27 Robert Bosch Gmbh ROTATION ANGLE SENSOR
US11193796B2 (en) 2017-06-23 2021-12-07 Robert Bosch Gmbh Rotational angle sensor
CN110785632B (en) * 2017-06-23 2022-02-18 罗伯特·博世有限公司 Rotation angle sensor
US11359909B2 (en) 2018-01-23 2022-06-14 Amiteq Co., Ltd. Induction-type rotation detection device
EP3745080A4 (en) * 2018-01-23 2021-10-06 Amiteq Co., Ltd. INDUCTIVE ROTATION DETECTION DEVICE
DE102018102094A1 (en) * 2018-01-31 2019-08-01 Thyssenkrupp Ag Inductive angle sensor for a motor vehicle steering
DE102018209243A1 (en) * 2018-06-11 2019-12-12 Audi Ag Drive system for a vehicle
CN113544046B (en) * 2019-02-25 2023-10-31 移动磁体技术公司 Position sensor for detecting rotation of the steering column
CN113544046A (en) * 2019-02-25 2021-10-22 移动磁体技术公司 Position sensor, in particular for detecting the torsion of a steering column
US11543231B2 (en) 2019-11-27 2023-01-03 Infineon Technologies Ag Inductive angle sensor with clearance value ascertainment
CN112857407A (en) * 2019-11-27 2021-05-28 英飞凌科技股份有限公司 Inductive angle sensor with distance value determination
DE102020115424A1 (en) 2020-06-10 2021-12-16 HELLA GmbH & Co. KGaA Inductive position sensor
DE102022130122A1 (en) 2022-11-15 2024-05-16 HELLA GmbH & Co. KGaA Adapter for attaching a rotor of a sensor to one end of a shaft

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