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WO2016001193A1 - Angle transducer unit for an inductive angle sensor, having a reference resonant circuit - Google Patents

Angle transducer unit for an inductive angle sensor, having a reference resonant circuit Download PDF

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Publication number
WO2016001193A1
WO2016001193A1 PCT/EP2015/064783 EP2015064783W WO2016001193A1 WO 2016001193 A1 WO2016001193 A1 WO 2016001193A1 EP 2015064783 W EP2015064783 W EP 2015064783W WO 2016001193 A1 WO2016001193 A1 WO 2016001193A1
Authority
WO
WIPO (PCT)
Prior art keywords
resonant circuit
angle
unit
sensor
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2015/064783
Other languages
German (de)
French (fr)
Inventor
Stephan BRÜGGEMANN
Andreas Schirling
Ulrich STÄHLIN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Priority to EP15732265.2A priority Critical patent/EP3164676A1/en
Priority to KR1020177000069A priority patent/KR20170012545A/en
Priority to US15/315,548 priority patent/US20170219384A1/en
Priority to CN201580035503.5A priority patent/CN106687769A/en
Publication of WO2016001193A1 publication Critical patent/WO2016001193A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G01D5/2086—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 two or more coils with respect to two or more other coils
    • 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
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/16—Elements for restraining, or preventing the movement of, parts, e.g. for zeroising

Definitions

  • the invention relates to an angle encoder unit for a ⁇ inuctive sensor for detecting the position of a rotating element according to the preamble of claim 1 and a sensor for detecting the position of a rotating element.
  • EP 1828722 Bl is an inductive position detector comprising a first inductive means and a second inductive device is known, wherein the first inductive device comprises a passive resonant circuit and the second inductive means defines the test section and comprises at least two Emp ⁇ catch turns.
  • the second inductive device is configured to induce an alternating current in the passive resonant circuit in use such that the alternating current induced in the passive resonant circuit induces an alternating signal in each receive coil due to the mutual inductance between the receiving turns and the passive resonant circuit, indicative of these signals are for the position of the first inductive device on the measuring path.
  • Further embodiments of inductive sensors are known from the applications DE 10 2013 225 918.2, DE 10 2013 225 874.7, DE 10 2013 225 897.6, DE 10 2013 225 873.9 and DE 10 2013 225 921.2.
  • the object of the invention is to show an angle encoder unit for an inductive sensor and an inductive sensor, whereby an absolute angle measurement within 360 ° in a simple manner can be achieved.
  • the object is achieved according to a first aspect of the invention by means of an angle encoder unit with the features of claim 1.
  • the content of the claims is made by express reference to the content of the description.
  • the invention is based on the basic idea of creating an unambiguous reference position or a unique reference point on the angle encoder unit by means of an additional reference resonant circuit .
  • the first resonant circuit interacts with a receiver coil of the sensor in such a way that, although rotational angle is precise, but only relatively, detectable. However, this is not sufficient to uniquely determine the angle of rotation with respect to one or more full revolutions. From the information of the relative angle with respect to the unique reference position, the angular position can be clearly determined over a full revolution.
  • the advantage of the invention lies particularly in the fact that the operation of the Refe rence ⁇ resonant circuit coincides with that of the first oscillatory circuit, and thus the sensor side, no additional elements are for detecting the reference oscillation circuit are necessary. In this way, a reference point on the Winkelge ⁇ berhim can be relatively easily created.
  • the Refe ⁇ rence resonant circuit causes when passing over the sensor or Emp ⁇ fang coil or receiving coils a change in the measurement which is to be distinguished from the measurements, when the reference oscillation circuit not cooperates with the receiving coil. Therefore, it is particularly advantageous if the reference ⁇ resonant circuit has only a punctual effect on the measurement. It when the reference resonant circuit at the sensor or at the receiving coil causes a punctual and pronounced voltage amplitude is particularly advantageous. This can be done either by the Shape of the reference resonant circuit or the interpretation of the individual parameters of the components of the reference resonant circuit can be achieved.
  • the angle encoder unit according to the invention is thereby further developed in an advantageous manner that the first resonant circuit and the reference resonant circuit each have a natural frequency, wherein the natural frequency of the reference resonant circuit differs from that of the first resonant circuit.
  • the reference resonant circuit can be distinguished in a particularly simple manner from the first resonant circuit in this way.
  • the angle encoder unit according to the invention is thereby further developed in an advantageous manner that the first resonant circuit and the reference resonant circuit are arranged on a carrier body, wherein the reference resonant circuit and the first resonant circuit are interleaved or arranged on the carrier body. This ensures that the detection of the first resonant circuit and the reference resonant circuit works reliably. There is no need for a separate adaptation of the receiver coil to detect the reference resonant circuit. Furthermore, a particularly space-saving arrangement of the resonant circuits is possible in this way.
  • the angle encoder unit according to the invention is thereby further developed in an advantageous manner in that the angle encoder unit has a plurality of reference resonant circuits. In this way, a distinction of circle segments can be carried out, which may be advantageous to her case of application.
  • the angle encoder unit according to the invention is thereby further developed in an advantageous manner such that at least one of the reference resonant circuits has a unique natural frequency. In this way it is easily ensured that the Reference resonant circuits are distinguishable from each other. Since the position of the reference resonant circuits on the angle encoder ⁇ unit does not change, it is sufficient to uniquely identify one of the many reference resonant circuits in order to conclude a conclusion on the other reference resonant circuits can. Reference resonant circuits having identical natural frequencies can be uniquely identified, for example, based on the count of the reference resonant circuits with respect to the unique reference resonant circuit.
  • the angle sensor unit according to the invention is further developed in some exemplary prior ⁇ a manner that the reference resonant circuits uniformly spaced along thezstraj ektorie the angle transmitter unit are arranged.
  • the angle sensor unit according to the invention is further developed in some exemplary prior ⁇ a manner that a plurality of reference ⁇ resonant circuits at a distance of 45 °, 90 ° or 180 ° to one another are spaced apart.
  • the angle encoder unit according to the invention is thereby further developed in an advantageous manner that the reference resonant circuit comprises a conductor track and a capacitor.
  • the angle encoder unit according to the invention is thereby further developed in an advantageous manner that the natural frequency of the reference resonant circuit is defined by means of the shaping of the conductor track and / or by means of the capacitance of the capacitor.
  • the angle encoder unit according to the invention is thereby further developed in an advantageous manner in that the reference resonant circuit is designed to extend substantially in the radial direction. Due to the very narrow in the circumferential direction training of the reference resonant circuit or its slot-like shape, it is n
  • the sensor according to the invention is advantageously further developed in that an evaluation unit is designed such that from the position of the first resonant circuit and the reference resonant circuit of the absolute angle of the angle encoder unit can be determined.
  • the sensor according to the invention is advantageously further developed such that the rotational speed of the angle encoder unit can be determined by means of the evaluation unit.
  • it is particularly advantageous to use a plurality of reference oscillating circuits.
  • Re ference ⁇ resonant circuits at a uniform distance from each other to arrange.
  • the sensor can be used in this way as an angle sensor and at the same time as a rotational angular velocity sensor.
  • the sensor according to the invention is characterized advantageously further developed in that the reference resonant circuit is defined as the zero crossing of the angle encoder unit.
  • FIG. 1 is a schematic representation of the angle encoder unit according to the invention.
  • Figure 2 is a schematic representation of the sensor according to the invention.
  • FIG. 1 shows essential parts of an angle sensor unit 1 according to the invention for an inductive sensor for detecting the position of a rotating element.
  • the angle encoder unit has a first oscillatory circuit 10.
  • the angle encoder unit has at least one further uniquely identifiable reference resonant circuit 11 in order to form a reference position on the angle encoder unit.
  • the first resonant circuit 10 and the reference resonant circuit 11 comprise a conductor track and a capacitor and form an electrical resonant circuit with an inductive and a capacitive element.
  • the structure of the first resonant circuit 10 and the reference resonant circuit 11 are therefore identical in principle. Not shown in the figures is the carrier body on which the oscillating circuits 10, 11 are arranged.
  • the carrier body can be, for example, a printed circuit board on which the oscillating circuits 10, 11 are printed or otherwise applied.
  • the carrier body in turn can in a different way with a be connected rotating element, for example, a shaft.
  • the structure of the carrier body and the rotating element are not essential to the invention and are adapted to the requirements of the respective applications.
  • Figure 2 shows an excitation coil 30 and two receiving coils 20, 21.
  • the excitation coil 30 is arranged in a circle around the receiving coils 20, 21 and is supplied with an AC voltage U ⁇ .
  • the receiving coils 20, 21 are formed from a conductor track, which form a plurality of substantially a plurality of square-shaped in a cross-shape arranged portions.
  • the receiving coils 20, 21 are in each case preferably rotated by 45 ° about the center 2 to each other in order to achieve a phase shift between the output voltages of the receiving coils. Due to the AC voltage U ⁇ creates an exciter field to the excitation coil 30, which in turn induces an output voltage in the receiving coils 20, 21 respectively.
  • the mode of operation of the sensor comprising the oscillating circuits 10, 11 and the coils 20, 21, 30 are sufficiently known from the prior art and will not be further explained here. Furthermore, the angle encoder unit 1 can also be used with other configurations of the exciter and receiver coils 20, 21, 30.
  • the excitation and receiving coils 30, 20, 21 are arranged on another second carrier body, which is arranged opposite the carrier body of the angle encoder unit, so that the oscillating circuits 10, 11 and the coils 30, 20, 21 are positioned congruent or overlapping each other , comparable to two overlapping discs.
  • the center points 2 of the two carrier bodies should lie on a rotation axis.
  • the reference oscillator circuit 11 has its own frequency, which differs from that of the 0
  • first resonant circuit 10 is different.
  • the reference oscillation ⁇ circle 11 has a significantly smaller width than said first resonant circuit 10. Also, the height of the reference oscillation circuit 11 is far less than that of the first resonant circuit 10. Further, the reference oscillation circuit is arranged on one of the head sides of the first resonant circuit 10. 11 Due to its own frequency of the reference resonant circuit 11, the smaller dimensions with the limited extent or dimensions and the arrangement at a position of the range of action of the reference resonant circuit 11 is limited to the receiving coil and can be easily identified.
  • the reference oscillator generates a detectable voltage change in the output ⁇ voltage of the receiver coils 20, 21, when this area on clips the receiving coils 20, 21 and passes over as if the opposite side of the head of the first oscillating circuit, where no reference resonant circuit is present, receives, via the receiving coil. It is not imperative that the reference ⁇ resonant circuit 11 is arranged on a head side of the first resonant circuit. Depending on the shape of the carrier body of the angle encoder unit 1 but also the shape of the receiving coils 20, 21, the reference resonant circuit 11 may be arranged at a different position where it can cooperate with the receiving coils 20, 21. For example, it is sufficient that the Refe rence ⁇ resonant circuit 11 is positioned in such a way so that it overlaps approximately with the edge region of the receiving coils 20,21, as exemplified in FIG. 2
  • the first oscillation circuit 10 and the Refe rence ⁇ resonant circuit 11 are arranged interleaved. Such an arrangement can be made dependent on the design of the receiving coils. Moreover, it is advantageous to form the reference resonant circuit in the manner of a slit, so that it extends substantially in the radial direction. Another configuration, not shown here, of the angle _
  • y beraji provides several reference resonant circuits.
  • at least one of the reference resonant circuits should have a unique natural frequency, which is different from those of the other reference resonant circuits. This can be done, for example, by a different shape of the conductor or by a different choice of the capacitor.
  • the reference resonant circuits may hereby be arranged equidistantly along the trajectory of the movement along a circumferential line of the angle encoder unit.
  • Theders masses massese ⁇ stanchions or -differenzen of the output voltages generated by the reference oscillator circuits may be used by an evaluation unit to refer to the relative angle of the first oscillating circuit determined at least one Refe rence ⁇ point. From the information of the relative angle with respect to the reference point, the absolute angle of the angle encoder unit can be determined. This is particularly easy to achieve if the evaluation unit is configured in such a way that a reference resonant circuit is used as the zero crossing resp. Zero point is defined. It is also possible by means of the evaluation unit, the rotational speed of the angle encoder unit can be determined by measuring the time intervals between two measurements of reference points. The velocity to be measured is the more accurate are the more available reference ⁇ resonant circuits and the time intervals between the measurements of the reference points are lower.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The invention relates to an angle transducer unit (1) for an inductive sensor for detecting the position of a rotating element, said angle transducer unit being connectible to a rotating element, having at least one first resonant circuit (10), interacting with at least one receiver coil (20, 21) of the sensor in order to provide the angle of the rotating element, and being characterised in that said angle transducer unit (1) comprises, in addition to the first resonant circuit (10), at least one additional, clearly-identifiable reference resonant circuit (11) in order to form a reference position on said angle transducer unit (1).

Description

Beschreibung description

Winkelgebereinheit für einen induktiven Winkelsensor mit einen ReferenzSchwingkreis Angle encoder unit for an inductive angle sensor with a reference oscillating circuit

Die Erfindung betrifft eine Winkelgebereinheit für einen in¬ duktiven Sensor zum Erfassen der Position eines rotierenden Elements gemäß dem Oberbegriff des Anspruchs 1 sowie einen Sensor zum Erfassen der Position eines rotierenden Elements. The invention relates to an angle encoder unit for a ¬ inuctive sensor for detecting the position of a rotating element according to the preamble of claim 1 and a sensor for detecting the position of a rotating element.

Aus der EP 1 828 722 Bl ist ein induktiver Positionsdetektor mit einer ersten induktiven Einrichtung und einer zweiten induktiven Einrichtung bekannt, wobei die erste induktive Einrichtung einen passiven Resonanzkreis umfasst und die zweite induktive Ein- richtung die Messstrecke definiert und mindestens zwei Emp¬ fangswindungen umfasst. Die zweite induktive Einrichtung ist so konfiguriert, dass sie im Gebrauch einen Wechselstrom in dem passiven Resonanzkreis induziert, sodass der in dem passiven Resonanzkreis induzierte Wechselstrom infolge der gegenseitigen Induktivität zwischen den Empfangswindungen und dem passiven Resonanzkreis ein Wechselsignal in jeder Empfangswindung induziert, wobei diese Signale bezeichnend sind für die Position der ersten induktiven Einrichtung auf der Messstrecke. Weitere Ausgestaltungen von induktiven Sensoren sind aus den Anmeldungen DE 10 2013 225 918.2, DE10 2013 225 874.7, DE 10 2013 225 897.6, DE 10 2013 225 873.9 und DE 10 2013 225 921.2 bekannt. From EP 1828722 Bl is an inductive position detector comprising a first inductive means and a second inductive device is known, wherein the first inductive device comprises a passive resonant circuit and the second inductive means defines the test section and comprises at least two Emp ¬ catch turns. The second inductive device is configured to induce an alternating current in the passive resonant circuit in use such that the alternating current induced in the passive resonant circuit induces an alternating signal in each receive coil due to the mutual inductance between the receiving turns and the passive resonant circuit, indicative of these signals are for the position of the first inductive device on the measuring path. Further embodiments of inductive sensors are known from the applications DE 10 2013 225 918.2, DE 10 2013 225 874.7, DE 10 2013 225 897.6, DE 10 2013 225 873.9 and DE 10 2013 225 921.2.

Aufgabe der Erfindung ist es eine Winkelgebereinheit für einen induktiven Sensor und einen induktiven Sensor aufzuzeigen, womit eine absolute Winkelmessung innerhalb von 360° auf eine einfache Weise erreichbar ist. Die Aufgabe wird gelöst gemäß einem ersten Aspekt der Erfindung mittels einer Winkelgebereinheit mit den Merkmalen aus Anspruch 1. Der Inhalt der Ansprüche wird durch ausdrückliche Inbezugnahme zum Inhalt der Beschreibung gemacht. The object of the invention is to show an angle encoder unit for an inductive sensor and an inductive sensor, whereby an absolute angle measurement within 360 ° in a simple manner can be achieved. The object is achieved according to a first aspect of the invention by means of an angle encoder unit with the features of claim 1. The content of the claims is made by express reference to the content of the description.

Der Erfindung liegt der Grundgedanke zu Grunde mittels eines zusätzlichen Referenzschwingkreises eine eindeutige Bezugs¬ position bzw. einen eindeutigen Bezugspunkt auf der Winkelgebereinheit zu schaffen. Der erste Schwingkreis wirkt mit einer Empfangsspule des Sensors derart zusammen, so dass Drehwinkel zwar präzise, jedoch nur relativ, erfassbar ist. Dieser reicht jedoch nicht aus, um den Drehwinkel in Bezug auf eine oder mehreren vollen Umdrehungen eindeutig zu bestimmen. Aus der Information des relativen Winkels im Bezug auf die eindeutige Bezugsposition kann die Winkellage über eine volle Umdrehung eindeutig festgestellt werden. Der Vorteil der Erfindung liegt dabei insbesondere darin, dass die Wirkungsweise des Refe¬ renzschwingkreises sich mit dem des ersten Schwingkreises deckt und somit sensorseitig keine zusätzlichen Elemente sind zur Detektion des Referenzschwingkreis notwendig sind. Auf diese Weise kann relativ einfach ein Bezugspunkt auf der Winkelge¬ bereinheit geschaffen werden. The invention is based on the basic idea of creating an unambiguous reference position or a unique reference point on the angle encoder unit by means of an additional reference resonant circuit . The first resonant circuit interacts with a receiver coil of the sensor in such a way that, although rotational angle is precise, but only relatively, detectable. However, this is not sufficient to uniquely determine the angle of rotation with respect to one or more full revolutions. From the information of the relative angle with respect to the unique reference position, the angular position can be clearly determined over a full revolution. The advantage of the invention lies particularly in the fact that the operation of the Refe rence ¬ resonant circuit coincides with that of the first oscillatory circuit, and thus the sensor side, no additional elements are for detecting the reference oscillation circuit are necessary. In this way, a reference point on the Winkelge ¬ bereinheit can be relatively easily created.

Zur Unterscheidung zwischen dem ersten Schwingkreis und dem Referenzschwingkreis ist es jedoch notwendig, dass der Refe¬ renzschwingkreis beim überfahren des Sensors bzw. der Emp¬ fangsspule oder Empfangsspulen eine Änderung in der Messung herbeiführt, die von den Messungen zu unterscheiden ist, wenn der Referenzschwingkreis nicht mit der Empfangsspule zusammenwirkt. Daher ist es besonders vorteilhaft, wenn der Referenz¬ schwingkreis nur eine punktuelle Wirkung auf die Messung hat. Besonders vorteilhaft ist es, wenn der Referenzschwingkreis am Sensor bzw. an der Empfangsspule eine punktuelle und ausgeprägte Spannungsamplitude hervorruft. Dies kann entweder durch die Formgebung des Referenzschwingkreises oder die Auslegung der einzelnen Parameter der Komponenten des Referenzschwingkreises erreicht werden. Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass der erste Schwingkreis und der Referenzschwingkreis jeweils eine Eigenfrequenz aufweisen, wobei sich die Eigenfrequenz des Referenzschwingkreises sich von dem des ersten Schwingkreises unterscheidet. Der Referenz- Schwingkreis kann auf diese Weise besonders einfach von dem ersten Schwingkreis unterschieden werden. To distinguish between the first resonant circuit and the reference oscillation circuit, it is necessary that the Refe ¬ rence resonant circuit causes when passing over the sensor or Emp ¬ fang coil or receiving coils a change in the measurement which is to be distinguished from the measurements, when the reference oscillation circuit not cooperates with the receiving coil. Therefore, it is particularly advantageous if the reference ¬ resonant circuit has only a punctual effect on the measurement. It when the reference resonant circuit at the sensor or at the receiving coil causes a punctual and pronounced voltage amplitude is particularly advantageous. This can be done either by the Shape of the reference resonant circuit or the interpretation of the individual parameters of the components of the reference resonant circuit can be achieved. The angle encoder unit according to the invention is thereby further developed in an advantageous manner that the first resonant circuit and the reference resonant circuit each have a natural frequency, wherein the natural frequency of the reference resonant circuit differs from that of the first resonant circuit. The reference resonant circuit can be distinguished in a particularly simple manner from the first resonant circuit in this way.

Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass der erste Schwingkreis und der Referenzschwingkreis auf einem Trägerkörper angeordnet sind, wobei der Referenzschwingkreis und der erste Schwingkreis ineinander verschachtelt oder auf dem Trägerkörper angeordnet sind. Auf diese Weise wird sichergestellt, dass die Erkennung des ersten Schwingkreises und des Referenz Schwingkreises zuver- lässig funktioniert. Es bedarf keiner gesonderten Anpassung der Empfangsspule, um den Referenzschwingkreis zu erfassen. Ferner ist auf diese Weise eine besonders Platz sparende Anordnung der Schwingkreise möglich. Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass die Winkelgebereinheit mehrere Referenzschwingkreise aufweist. Auf diese Weise kann eine Unterscheidung von Kreissegmenten durchgeführt werden, die ihr nach Anwendungsfall vorteilhaft sein können. The angle encoder unit according to the invention is thereby further developed in an advantageous manner that the first resonant circuit and the reference resonant circuit are arranged on a carrier body, wherein the reference resonant circuit and the first resonant circuit are interleaved or arranged on the carrier body. This ensures that the detection of the first resonant circuit and the reference resonant circuit works reliably. There is no need for a separate adaptation of the receiver coil to detect the reference resonant circuit. Furthermore, a particularly space-saving arrangement of the resonant circuits is possible in this way. The angle encoder unit according to the invention is thereby further developed in an advantageous manner in that the angle encoder unit has a plurality of reference resonant circuits. In this way, a distinction of circle segments can be carried out, which may be advantageous to her case of application.

Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass mindestens einer der Referenzschwingkreise eine eindeutige Eigenfrequenz aufweist. Auf diese Weise wird auf einfache Weise sichergestellt, dass die Referenzschwingkreise voneinander unterscheidbar sind. Da sich die Position der Referenzschwingkreise auf der Winkelgeber¬ einheit nicht ändert, ist es ausreichend einen der vielen Referenzschwingkreise eindeutig zu identifizieren, um einen Rückschluss auf die weiteren Referenzschwingkreise schließen zu können. Referenzschwingkreise mit identischen Eigenfrequenzen können beispielsweise anhand der Zählung der Referenzschwingkreise in Bezug auf den eindeutigen Referenzschwingkreis eindeutig identifiziert werden. The angle encoder unit according to the invention is thereby further developed in an advantageous manner such that at least one of the reference resonant circuits has a unique natural frequency. In this way it is easily ensured that the Reference resonant circuits are distinguishable from each other. Since the position of the reference resonant circuits on the angle encoder ¬ unit does not change, it is sufficient to uniquely identify one of the many reference resonant circuits in order to conclude a conclusion on the other reference resonant circuits can. Reference resonant circuits having identical natural frequencies can be uniquely identified, for example, based on the count of the reference resonant circuits with respect to the unique reference resonant circuit.

Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass die Referenzschwingkreise gleichmäßig beabstandet entlang der Bewegungstraj ektorie der Winkelgebereinheit angeordnet sind. The angle sensor unit according to the invention is further developed in some exemplary prior ¬ a manner that the reference resonant circuits uniformly spaced along the Bewegungstraj ektorie the angle transmitter unit are arranged.

Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass mehrere Referenz¬ schwingkreise im Abstand von 45°, 90° oder 180° zueinander beabstandet sind. The angle sensor unit according to the invention is further developed in some exemplary prior ¬ a manner that a plurality of reference ¬ resonant circuits at a distance of 45 °, 90 ° or 180 ° to one another are spaced apart.

Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass der Referenzschwingkreis eine Leiterbahn und einen Kondensator umfasst. Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass die Eigenfrequenz des Referenzschwingkreises mittels der Formgebung der Leiterbahn und / oder mittels der Kapazität des Kondensators definiert ist. Die erfindungsgemäße Winkelgebereinheit wird dadurch in vor¬ teilhafter Weise weitergebildet, dass der Referenzschwingkreis sich im Wesentlichen in radialer Richtung erstreckend ausgebildet ist. Durch die in Umfangsrichtung sehr schmale Ausbildung des Referenzschwingkreises bzw. dessen schlitzartige Form ist es n The angle encoder unit according to the invention is thereby further developed in an advantageous manner that the reference resonant circuit comprises a conductor track and a capacitor. The angle encoder unit according to the invention is thereby further developed in an advantageous manner that the natural frequency of the reference resonant circuit is defined by means of the shaping of the conductor track and / or by means of the capacitance of the capacitor. The angle encoder unit according to the invention is thereby further developed in an advantageous manner in that the reference resonant circuit is designed to extend substantially in the radial direction. Due to the very narrow in the circumferential direction training of the reference resonant circuit or its slot-like shape, it is n

5 möglich den Durchgang des Bezugspunktes bzw. des Referenz Schwingkreises über die Empfangsspule besonders deutlich zu erkennen. Insbesondere ist es vorteilhaft den Referenz¬ schwingkreis derart zu gestalten, dass die durch den Refe- renzschwingkreis in der Empfangsspule hervorgerufene Span¬ nungsspitze besonders deutlich ausfällt und die Erkennung des Referenz Schwingkreises dadurch zuverlässig möglich ist. Al¬ ternativ ist es jedoch auch denkbar, den Referenzschwingkreis über eine gewisse Breite entlang des Umfangs auszubilden, um beispielsweise möglichst früh zu erkennen, ob man sich im Bereich des Nulldurchgangs befindet. Es ist daher je nach Anwendungsfall zu unterscheiden, welcher dieser beiden Varianten vorteilhaft ist . Die Aufgabe wird ferner gelöst gemäß einem zweiten Aspekt der Erfindung mittels eines Sensors mit den Merkmalen des nebengeordneten unabhängigen Hauptanspruchs. Ergänzend zu den Merkmalen der Winkelgebereinheit ist ein Sensor besonders vorteilhaft, der sich die Möglichkeiten der Winkelgebereinheit zu Nutze macht. 5 possible to clearly see the passage of the reference point or the reference resonant circuit via the receiver coil. In particular, it is advantageous to make the reference ¬ resonant circuit such that the refer- ence by the resonant circuit in the receive coil induced voltage spike clamping ¬ particularly clearly fails and the detection of the reference oscillation circuit is thereby reliably. However, al ¬ tively, it is also conceivable to form the reference oscillator over a certain width along the circumference, for example, as early as possible to see if you are in the area of the zero crossing. It is therefore to distinguish depending on the application, which of these two variants is advantageous. The object is further achieved according to a second aspect of the invention by means of a sensor having the features of the independent independent main claim. In addition to the features of the angle encoder unit, a sensor is particularly advantageous, which makes use of the possibilities of the angle encoder unit.

Der erfindungsgemäße Sensor wird dadurch in Vorteilhafter weise weitergebildet, dass eine Auswerteeinheit derart ausgebildet ist, dass aus der Position des ersten Schwingkreises und des Referenzschwingkreises der Absolutwinkel der Winkelgebereinheit ermittelbar ist. The sensor according to the invention is advantageously further developed in that an evaluation unit is designed such that from the position of the first resonant circuit and the reference resonant circuit of the absolute angle of the angle encoder unit can be determined.

Der erfindungsgemäße Sensor wird dadurch in Vorteilhafter weise weitergebildet, dass mittels der Auswerteeinheit die Rotati- onsgeschwindigkeit der Winkelgebereinheit ermittelbar ist. Hierzu ist es besonders vorteilhaft mehrere Referenzschwing¬ kreise zu verwenden. Insbesondere ist es bevorzugt, die Re¬ ferenzschwingkreise in einem gleichmäßigen Abstand zueinander anzuordnen. Der Sensor kann auf diese Weise als Winkelsensor und zugleich als Drehwinkelgeschwindigkeitsensor verwendet werden. The sensor according to the invention is advantageously further developed such that the rotational speed of the angle encoder unit can be determined by means of the evaluation unit. For this purpose, it is particularly advantageous to use a plurality of reference oscillating circuits. In particular, it is preferred that Re ference ¬ resonant circuits at a uniform distance from each other to arrange. The sensor can be used in this way as an angle sensor and at the same time as a rotational angular velocity sensor.

Der erfindungsgemäße Sensor wird dadurch in Vorteilhafter weise weitergebildet, dass der Referenzschwingkreis als Nulldurchgang der Winkelgebereinheit definiert ist. The sensor according to the invention is characterized advantageously further developed in that the reference resonant circuit is defined as the zero crossing of the angle encoder unit.

Die Aufgabe wird nachfolgend anhand von Figuren und Ausfüh¬ rungsbeispielen näher beschrieben. Es zeigen: The object is described in detail below with reference to figures and exporting ¬ approximately examples. Show it:

Figur 1 eine schematische Darstellung der erfindungsgemäßen Winkelgebereinheit, und Figure 1 is a schematic representation of the angle encoder unit according to the invention, and

Figur 2 eine schematische Darstellung des erfindungsgemäßen Sensors. Figure 2 is a schematic representation of the sensor according to the invention.

Figur 1 zeigt wesentliche Teile einer erfindungsgemäßen Winkelgebereinheit 1 für einen induktiven Sensor zum Erfassen der Position eines rotierenden Elements. Die Winkelgebereinheit weist einen ersten Schwingkreis 10 auf. Zusätzlich zu dem ersten Schwingkreis 10 weist die Winkelgebereinheit mindestens einen weiteren eindeutig identifizierbaren Referenzschwingkreis 11 auf, um eine Bezugsposition auf der Winkelgebereinheit zu bilden. Der erste Schwingkreis 10 sowie der Referenzschwingkreis 11 umfassen eine Leiterbahn und einen Kondensator und bilden einen elektrischen Schwingkreis mit einer induktiven und einem kapazitiven Element. Der Aufbau des ersten Schwingkreises 10 und des Referenzschwingkreises 11 sind somit prinzipiell identisch. Nicht in den Figuren gezeigt ist der Trägerkörper, auf dem die Schwingkreise 10, 11 angeordnet sind. Der Trägerkörper kann beispielsweise eine Leiterplatine sein auf dem die Schwingkreise 10, 11 aufgedruckt oder anderweitig aufgebracht sind. Der Trägerkörper wiederum kann auf unterschiedliche Weise mit einem rotierenden Element, zum Beispiel eine Welle, verbunden sein . Der Aufbau des Trägerkörpers und des rotierenden Elements sind jedoch nicht erfindungswesentlich und sind an die Anforderungen der jeweiligen Anwendungsfälle anzupassen. FIG. 1 shows essential parts of an angle sensor unit 1 according to the invention for an inductive sensor for detecting the position of a rotating element. The angle encoder unit has a first oscillatory circuit 10. In addition to the first oscillatory circuit 10, the angle encoder unit has at least one further uniquely identifiable reference resonant circuit 11 in order to form a reference position on the angle encoder unit. The first resonant circuit 10 and the reference resonant circuit 11 comprise a conductor track and a capacitor and form an electrical resonant circuit with an inductive and a capacitive element. The structure of the first resonant circuit 10 and the reference resonant circuit 11 are therefore identical in principle. Not shown in the figures is the carrier body on which the oscillating circuits 10, 11 are arranged. The carrier body can be, for example, a printed circuit board on which the oscillating circuits 10, 11 are printed or otherwise applied. The carrier body in turn can in a different way with a be connected rotating element, for example, a shaft. However, the structure of the carrier body and the rotating element are not essential to the invention and are adapted to the requirements of the respective applications.

Figur 2 zeigt eine Erregerspule 30 und zwei Empfangsspulen 20, 21. Die Erregerspule 30 ist kreisförmig um die Empfangsspulen 20, 21 angeordnet und wird mit einer Wechselspannung U~ versorgt. Die Empfangsspulen 20, 21 sind aus einer Leiterbahn ausgebildet, die mehrere im Wesentlichen mehrere quadratisch geformte in einer Kreuzform zueinander angeordnete Abschnitte bilden. Die Empfangsspulen 20, 21 sind dabei jeweils um vorzugsweise 45° um den Mittelpunkt 2 zueinander verdreht, um eine Phasenverschiebung zwischen den Ausgangsspannungen der Empfangsspulen zu erreichen. Aufgrund der Wechselspannung U~ entsteht ein Erregerfeld um die Erregerspule 30, das wiederum in den Empfangsspulen 20, 21 jeweils eine Ausgangsspannung induziert. Die Wirkungsweise des Sensors umfassend die Schwingkreise 10, 11 und die Spulen 20, 21, 30 sind hinreichend aus dem Stand der Technik bekannt und werden hier nicht weiter erläutert. Ferner ist die Winkelgebereinheit 1 auch mit anderen Konfigurationen der Erreger- und Empfangsspulen 20, 21,30 verwendbar. Figure 2 shows an excitation coil 30 and two receiving coils 20, 21. The excitation coil 30 is arranged in a circle around the receiving coils 20, 21 and is supplied with an AC voltage U ~. The receiving coils 20, 21 are formed from a conductor track, which form a plurality of substantially a plurality of square-shaped in a cross-shape arranged portions. The receiving coils 20, 21 are in each case preferably rotated by 45 ° about the center 2 to each other in order to achieve a phase shift between the output voltages of the receiving coils. Due to the AC voltage U ~ creates an exciter field to the excitation coil 30, which in turn induces an output voltage in the receiving coils 20, 21 respectively. The mode of operation of the sensor comprising the oscillating circuits 10, 11 and the coils 20, 21, 30 are sufficiently known from the prior art and will not be further explained here. Furthermore, the angle encoder unit 1 can also be used with other configurations of the exciter and receiver coils 20, 21, 30.

Die Erreger- und Empfangsspulen 30, 20, 21 sind auf einem anderen zweiten Trägerkörper angeordnet, der gegenüber dem Trägerkörper der Winkelgebereinheit angeordnet ist, so dass sich die Schwingkreise 10, 11 und die Spulen 30, 20, 21 kongruent bzw. überlappend zueinander positioniert sind, vergleichbar mit sich zwei überlappenden Scheiben. Idealerweise sollten die Mit- telpunkte 2 der beiden Trägerkörper auf einer Drehachse liegen. The excitation and receiving coils 30, 20, 21 are arranged on another second carrier body, which is arranged opposite the carrier body of the angle encoder unit, so that the oscillating circuits 10, 11 and the coils 30, 20, 21 are positioned congruent or overlapping each other , comparable to two overlapping discs. Ideally, the center points 2 of the two carrier bodies should lie on a rotation axis.

Um den ersten Schwingkreis 10 von dem Referenzschwingkreis 11 signaltechnisch unterscheiden zu können, weist der Referenzschwingkreis 11 eine eigene Frequenz auf, die sich von dem des 0 In order to be able to differentiate the first oscillatory circuit 10 from the reference oscillatory circuit 11 in terms of signal technology, the reference oscillator circuit 11 has its own frequency, which differs from that of the 0

o ersten Schwingkreises 10 unterscheidet. Der Referenzschwing¬ kreis 11 weist eine deutlich geringere Breite auf als der erste Schwingkreis 10. Auch die Höhe des Referenzschwingkreises 11 ist weitaus geringer als die des ersten Schwingkreises 10. Des Weiteren ist der Referenzschwingkreis 11 an einer der Kopfseiten des ersten Schwingkreises 10 angeordnet. Aufgrund der eigenen eigene Frequenz des Referenzschwingkreises 11, der geringeren Abmessungen mit der beschränkten Ausdehnung bzw. Abmessungen sowie der Anordnung an einer Position ist der Wirkungsbereich des Referenzschwingkreises 11 auf die Empfangsspulen beschränkt und kann einfach identifiziert werden. Der Referenzschwingkreis erzeugt eine erkennbare Spannungsänderung in der Ausgangs¬ spannung der Empfangsspulen 20, 21, wenn dieser Bereich die Empfangsspulen 20, 21 überstreift bzw. überfährt als wenn die gegenüberliegende Kopfseite des ersten Schwingkreises, wo kein Referenzschwingkreis vorhanden ist, über die Empfangsspulen erfährt. Es ist nicht zwingend notwendig, dass der Referenz¬ schwingkreis 11 an einer Kopfseite des ersten Schwingkreises angeordnet ist. Je nach der Form des Trägerkörpers der Win- kelgebereinheit 1 aber auch der Form der Empfangsspulen 20, 21 kann der Referenzschwingkreis 11 an einer anderen Position angeordnet sein, wo es mit den Empfangsspulen 20, 21 zusammenwirken kann. Es reicht beispielsweise aus, dass der Refe¬ renzschwingkreis 11 derart positioniert ist, so dass es ungefähr mit dem Randbereich der Empfangsspulen 20,21 überschneidet, wie beispielhaft in Figur 2 dargestellt. o first resonant circuit 10 is different. The reference oscillation ¬ circle 11 has a significantly smaller width than said first resonant circuit 10. Also, the height of the reference oscillation circuit 11 is far less than that of the first resonant circuit 10. Further, the reference oscillation circuit is arranged on one of the head sides of the first resonant circuit 10. 11 Due to its own frequency of the reference resonant circuit 11, the smaller dimensions with the limited extent or dimensions and the arrangement at a position of the range of action of the reference resonant circuit 11 is limited to the receiving coil and can be easily identified. The reference oscillator generates a detectable voltage change in the output ¬ voltage of the receiver coils 20, 21, when this area on clips the receiving coils 20, 21 and passes over as if the opposite side of the head of the first oscillating circuit, where no reference resonant circuit is present, receives, via the receiving coil. It is not imperative that the reference ¬ resonant circuit 11 is arranged on a head side of the first resonant circuit. Depending on the shape of the carrier body of the angle encoder unit 1 but also the shape of the receiving coils 20, 21, the reference resonant circuit 11 may be arranged at a different position where it can cooperate with the receiving coils 20, 21. For example, it is sufficient that the Refe rence ¬ resonant circuit 11 is positioned in such a way so that it overlaps approximately with the edge region of the receiving coils 20,21, as exemplified in FIG. 2

Es ist denkbar, dass der erste Schwingkreis 10 und der Refe¬ renzschwingkreis 11 ineinander verschachtelt angeordnet sind. Eine solche Anordnung kann dabei von der Gestaltung der Empfangsspulen abhängig gemacht werden. Darüber hinaus ist es vorteilhaft den Referenzschwingkreis schlitzartig auszubilden, so dass es sich im Wesentlichen in radialer Richtung erstreckt. Eine weitere hier nicht gezeigte Konfiguration der Winkelge- _ It is conceivable that the first oscillation circuit 10 and the Refe rence ¬ resonant circuit 11 are arranged interleaved. Such an arrangement can be made dependent on the design of the receiving coils. Moreover, it is advantageous to form the reference resonant circuit in the manner of a slit, so that it extends substantially in the radial direction. Another configuration, not shown here, of the angle _

y bereinheit sieht mehrere Referenzschwingkreise vor. Vorzugs¬ weise sollte mindestens einer der Referenzschwingkreise eine eindeutige Eigenfrequenz aufweisen, die sich von denen der anderen Referenzschwingkreise unterscheidet. Dies kann bspw. durch eine unterschiedliche Formgebung der Leiterbahn oder durch eine unterschiedliche Wahl des Kondensators erfolgen. Die Referenzschwingkreise können hierbei gleichmäßig beabstandet entlang der Bewegungstraj ektorie, entlang einer Umfangslinie, der Winkelgebereinheit angeordnet sein. Vorteilhaft ist ein Abstand von 45°, 90° oder 180° zwischen den Referenzschwingkreisen . y bereinheit provides several reference resonant circuits. Preference ¬ wise, at least one of the reference resonant circuits should have a unique natural frequency, which is different from those of the other reference resonant circuits. This can be done, for example, by a different shape of the conductor or by a different choice of the capacitor. The reference resonant circuits may hereby be arranged equidistantly along the trajectory of the movement along a circumferential line of the angle encoder unit. Advantageously, a distance of 45 °, 90 ° or 180 ° between the reference resonant circuits.

Die durch die Referenzschwingkreise erzeugten Spannungsände¬ rungen bzw. -differenzen der Ausgangsspannungen können durch eine Auswerteeinheit dazu verwendet werden, um den relativen Winkel des ersten Schwingkreises auf mindestens einen Refe¬ renzpunkt fest zu referenzieren . Aus der Information des relativen Winkels in Bezug auf den Referenzpunkt kann der Absolutwinkel der Winkelgebereinheit ermittelt werden. Dies ist besonders einfach zu erreichen, wenn in die Auswerteeinheit derart konfiguriert ist, dass ein Referenzschwingkreis als Nulldurchgang bzw . Nullpunkt definiert ist . Ferner ist es möglich mittels der Auswerteeinheit die Rotationsgeschwindigkeit der Winkelgebereinheit ermittelbar ist indem man die Zeitabstände zwischen zwei Messungen von Referenzpunkten misst. Die zu messende Geschwindigkeit ist umso genauer je mehr Referenz¬ schwingkreise vorhanden sind und die Zeitabstände zwischen den Messungen der Referenzpunkte geringer werden. The Spannungsände ¬ stanchions or -differenzen of the output voltages generated by the reference oscillator circuits may be used by an evaluation unit to refer to the relative angle of the first oscillating circuit determined at least one Refe rence ¬ point. From the information of the relative angle with respect to the reference point, the absolute angle of the angle encoder unit can be determined. This is particularly easy to achieve if the evaluation unit is configured in such a way that a reference resonant circuit is used as the zero crossing resp. Zero point is defined. It is also possible by means of the evaluation unit, the rotational speed of the angle encoder unit can be determined by measuring the time intervals between two measurements of reference points. The velocity to be measured is the more accurate are the more available reference ¬ resonant circuits and the time intervals between the measurements of the reference points are lower.

Claims

Patentansprüche claims 1. Winkelgebereinheit (1) für einen induktiven Sensor zum Erfassen der Position eines rotierenden Elements, wobei die Winkelgebereinheit mit einem rotierenden Element verbindbar ist und mindestens einen ersten Schwingkreis (10) aufweist, die mit mindestens einer Empfängerspule (20, 21) des Sensors zusammenwirkt, um den Winkel des rotierenden Elements vorzugeben, 1. An angle sensor unit (1) for an inductive sensor for detecting the position of a rotating element, wherein the angle encoder unit is connectable to a rotating element and at least one first resonant circuit (10) which cooperates with at least one receiver coil (20, 21) of the sensor to specify the angle of the rotating element, dadurch gekennzeichnet, dass die Winkelgebereinheit (1) zu¬ sätzlich zu dem ersten Schwingkreis (10) mindestens einen weiteren eindeutig identifizierbaren Referenzschwingkreis (11) aufweist, um eine Bezugsposition auf der Winkelgebereinheit (1) zu bilden. characterized in that the angle encoder unit (1) to ¬ addition to the first resonant circuit (10) at least one further uniquely identifiable reference resonant circuit (11) to form a reference position on the angle encoder unit (1). 2. Winkelgebereinheit (1) nach Anspruch 1, dadurch gekennzeichnet, dass der erste Schwingkreis (10) und der Re¬ ferenzschwingkreis (11) jeweils eine Eigenfrequenz auf¬ weisen, wobei sich die Eigenfrequenz des Referenz- Schwingkreises (11) sich von dem des ersten Schwingkreises2. Angle transmitter unit (1) according to claim 1, characterized in that the first oscillation circuit (10) and the Re ¬ ferenz resonant circuit (11) each have a natural frequency on ¬, wherein the natural frequency of the reference oscillation circuit (11) of the of the first resonant circuit (10) unterscheidet. (10) differs. 3. Winkelgebereinheit (1) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der erste Schwingkreis (10) und der Referenzschwingkreis (11) auf einem Trägerkörper ange¬ ordnet sind, wobei der Referenzschwingkreis (11) und der erste Schwingkreis (10) ineinander verschachtelt auf dem Trägerkörper angeordnet sind. 3. Angle transducer unit (1) according to claim 1 or 2, characterized in that the first resonant circuit (10) and the reference resonant circuit (11) are arranged on a carrier body ¬ , wherein the reference resonant circuit (11) and the first resonant circuit (10) into one another nested on the carrier body are arranged. 4. Winkelgebereinheit (1) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Winkelgeber¬ einheit (1) mehrere Referenzschwingkreise (10) aufweist. 4. Angle transducer unit (1) according to one of the preceding claims, characterized in that the angle encoder ¬ unit (1) has a plurality of reference resonant circuits (10). 5. Winkelgebereinheit (1) nach Anspruch 4, dadurch gekennzeichnet, dass mindestens einer der Referenzschwingkreise (10) eine eindeutige Eigenfrequenz aufweist. 5. Angle transducer unit (1) according to claim 4, characterized in that at least one of the reference resonant circuits (10) has a unique natural frequency. 6. Winkelgebereinheit (1) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass die Referenz¬ schwingkreise (11) gleichmäßig beabstandet entlang der Bewegungstraj ektorie der Winkelgebereinheit angeordnet sind . 6. Angle transducer unit (1) according to any one of the preceding claims, characterized in that the reference ¬ resonant circuits (11) are evenly spaced along the Bewegungsstraj ektorie the angle encoder unit are arranged. 7. Winkelgebereinheit (1) nach Anspruch 6, dadurch gekennzeichnet, dass mehrere Referenzschwingkreise (11) im Abstand von 45°, 90° oder 180° zueinander beabstandet sind. 7. Angle transducer unit (1) according to claim 6, characterized in that a plurality of reference resonant circuits (11) spaced at a distance of 45 °, 90 ° or 180 ° to each other. 8. Winkelgebereinheit (1) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass der Referenz¬ schwingkreis (11) eine Leiterbahn (L) und einen Kondensator (C) umfasst. 8. An angle encoder unit (1) according to one of the preceding claims, characterized in that the reference ¬ resonant circuit (11) comprises a conductor track (L) and a capacitor (C). 9. Winkelgebereinheit (1) nach Anspruch 8, dadurch gekenn¬ zeichnet, dass die Eigenfrequenz des Referenzschwingkreises (11) mittels der Formgebung der Leiterbahn und / oder mittels der Kapazität des Kondensators definiert ist. 9. angular encoder unit (1) according to claim 8, characterized marked ¬ characterized in that the natural frequency of the reference resonant circuit (11) is defined by means of the shaping of the conductor track and / or by means of the capacitance of the capacitor. 10. Winkelgebereinheit (1) nach einem der vorstehenden10. Angle transducer unit (1) according to one of the preceding Ansprüche, dadurch gekennzeichnet, dass der Referenz¬ schwingkreis (11) sich im Wesentlichen in radialer Richtung erstreckend ausgebildet ist. Claims, characterized in that the reference ¬ resonant circuit (11) is formed extending substantially in the radial direction. 11. Sensor zum Erfassen der Position eines rotierenden11. Sensor for detecting the position of a rotating Elements aufweisend: Comprising elements: - eine Erregerspule (30), welche mit einer Wechsel¬ spannung (U~) versorgt wird, um ein zur Wechsel- Spannung (U~) korrespondierendes Erregerfeld zu erzeugen, - An excitation coil (30), which is supplied with a change voltage ¬ (U ~), in order to change the Generate voltage (U ~) corresponding excitation field, - mindestens eine Empfangsspule (20, 21), die mit der Erregerspule derart gekoppelt ist, so dass das Er- regerfeld in der Empfangsspule (20, 21) jeweils eine - At least one receiving coil (20, 21) which is so coupled to the excitation coil, so that the excitation field in the receiving coil (20, 21) each have a Spannung induziert, und Voltage induced, and eine Winkelgebereinheit (1) nach einem der vor¬ stehenden Ansprüche. an angle transmitter unit (1) according to one of the standing before ¬ claims. 12. Sensor nach Anspruch 10, gekennzeichnet durch eine12. Sensor according to claim 10, characterized by a Auswerteeinheit, wobei die Auswerteeinheit derart aus¬ gebildet ist, dass aus der Position des ersten Schwingkreises (10) und des Referenzschwingkreises (11) der Absolutwinkel der Winkelgebereinheit (1) ermittelbar ist. Evaluation unit, wherein the evaluation unit is formed from ¬ such that from the position of the first resonant circuit (10) and the reference resonant circuit (11) of the absolute angle of the angle encoder unit (1) can be determined. 13. Sensor nach Anspruch 10 oder 11, dadurch gekennzeichnet, dass mittels der Auswerteeinheit die Rotati¬ onsgeschwindigkeit der Winkelgebereinheit (1) ermittelbar ist . 13. Sensor according to claim 10 or 11, characterized in that the Rotati ¬ onsgeschwindigkeit the angle transmitter unit by means of the evaluation unit (1) can be determined. 14. Sensor nach einem vorstehenden Ansprüche 9 bis 11, dadurch gekennzeichnet, dass der Referenzschwingkreis (11) als Nulldurchgang der Winkelgebereinheit definiert ist. 14. Sensor according to one of the preceding claims 9 to 11, characterized in that the reference resonant circuit (11) is defined as a zero crossing of the angle encoder unit.
PCT/EP2015/064783 2014-07-03 2015-06-30 Angle transducer unit for an inductive angle sensor, having a reference resonant circuit Ceased WO2016001193A1 (en)

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EP15732265.2A EP3164676A1 (en) 2014-07-03 2015-06-30 Angle transducer unit for an inductive angle sensor, having a reference resonant circuit
KR1020177000069A KR20170012545A (en) 2014-07-03 2015-06-30 Angle transducer unit for an inductive angle sensor, having a reference resonant circuit
US15/315,548 US20170219384A1 (en) 2015-06-30 2015-06-30 Angle transmitter unit for an inductive angle sensor having a reference resonant circuit (as amended)
CN201580035503.5A CN106687769A (en) 2014-07-03 2015-06-30 Angle transducer unit for an inductive angle sensor, having a reference resonant circuit

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KR20170012545A (en) 2017-02-02
EP3164676A1 (en) 2017-05-10
CN106687769A (en) 2017-05-17

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