DE202004007346U1 - Machine shaft movement sensor has magnetic ring attached to rotor on shaft with coding to allow determination of position - Google Patents

Machine shaft movement sensor has magnetic ring attached to rotor on shaft with coding to allow determination of position Download PDF

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Publication number
DE202004007346U1
DE202004007346U1 DE202004007346U DE202004007346U DE202004007346U1 DE 202004007346 U1 DE202004007346 U1 DE 202004007346U1 DE 202004007346 U DE202004007346 U DE 202004007346U DE 202004007346 U DE202004007346 U DE 202004007346U DE 202004007346 U1 DE202004007346 U1 DE 202004007346U1
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Prior art keywords
sensor
axis
rotor
shaft
scale
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DE202004007346U
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German (de)
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Siko Dr-Ing G Wandres GmbH
WANDRES SIKO
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Siko Dr-Ing G Wandres GmbH
WANDRES SIKO
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    • 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
    • G01D5/142—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 using Hall-effect devices
    • G01D5/145—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 using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • 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
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • 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
    • G01D5/244—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 characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—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 characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2451—Incremental encoders
    • 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
    • G01D5/244—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 characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/249—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 characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
    • G01D5/2492—Pulse stream
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

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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 machine shaft (2) rotor (1) movement limiter has a sensor and a marking. The shaft and rotor define an annular gap in which the sensor and marking are positioned. The shaft can be fixed with the rotor mounted on it. The rotor can be a pulley with a tooth crown (3) mounted on its peripheral surface. The sensor can be mounted between the rotor bearings. The marking can be a magnetic ring with coded magnetization.

Description

Die Erfindung betrifft eine Vorrichtung zum Bestimmen der Umdrehung, Drehzahl, Winkelposition od.dgl eines relativ um eine Achse rotierenden Elementes mittels einem Drehgeber aus zumindest einem Sensor und einem diesem zugeordneten Massstab.The invention relates to a device to determine the rotation, speed, angular position or the like element rotating about an axis by means of a rotary encoder from at least one sensor and a scale assigned to it.

STAND DER TECHNIKSTATE OF THE ART

Wege- bzw. Winkelmesssysteme werden heute in vielen industriellen Anwendungen benötigt. Nur beispielhaft wird auf Drehgeber verwiesen, wie sie in der DE 199 58 440 A1 dargestellt sind. Mit ihnen werden die Drehzahl, Position od.dgl. von Wellen von Arbeitsmaschinen ermittelt. Wegmesssysteme beziehen sich vor allem auf lineare Massstäbe, Winkelmesssysteme vor allem auf rotative Massstäbe.Path and angle measuring systems are required in many industrial applications today. Reference is only made to rotary encoders as shown in the DE 199 58 440 A1 are shown. With them the speed, position or the like. determined by waves from working machines. Position measuring systems primarily relate to linear scales, angle measuring systems primarily to rotary scales.

Die heutigen Drehgeber stellen ein eigenes Bauelement dar. Sie werden beispielsweise auf die Welle einer Arbeitsmaschine aufgesetzt, so dass sich eine Impulsscheibe/Kodierscheibe zusammen mit der Welle dreht. Hierdurch ist sie äußeren Einflüssen, insbesondere mechanischer und thermischer Art ausgesetzt. Diese Ausführung eines Drehgebers als eigenes Bauelement erfordert i.d.R. eine aufwändige Lagerung der Sensorik.Today's encoders are setting own component. They are, for example, on the shaft of a Work machine placed so that there is a pulse disc / coding disc rotates together with the shaft. As a result, it is external, in particular mechanical and exposed to thermal nature. This version of an encoder as own component usually requires elaborate storage of the sensors.

AUFGAGEAUFGAGE

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der o.g. Art zu schaffen, welche geringen äußeren Einflüssen ausgesetzt und neben der Messwerterfassung (Position, Drehzahl, Winkellage) auch als Funktionselement ausgebildet ist.The present invention lies the task underlying a device of the above Kind of creating which are exposed to minor external influences and in addition to the measured value acquisition (position, speed, angular position) is also designed as a functional element.

LÖSUNG DER AUFGABESOLUTION TO TASK

Zur Lösung der Aufgabe führt zum einen, dass von der Achse und dem rotierenden Element ein Ringraum ausgebildet ist, in welchem der Sensor dem Massstab zugeordnet ist.To solve the task leads to one that from the axis and the rotating element is an annulus is formed, in which the sensor is assigned to the scale.

Das bedeutet, dass der eigentliche Drehgeber aus Sensor und Massstab in dem Element selbst integriert ist, dessen Drehung bestimmt werden soll. Hierdurch kann zum einen eine erhebliche Kostenreduktion erfolgen, da getrennte Drehgeber nicht mehr notwendig sind. Ferner kommt es zu keiner Axialverschiebung, da der Drehgeber selbst in dem zu messenden Element integriert ist. Torsionen, Verspannungen usw. sind auf ein Minimum reduziert. Eine Drehmomentstütze ist nicht notwendig.That means the real one Encoder consisting of sensor and scale integrated in the element itself whose rotation is to be determined. This can, on the one hand there is a significant cost reduction as separate encoders are no longer necessary. Furthermore, there is no axial displacement, since the encoder itself is integrated in the element to be measured. Torsions, tension, etc. are reduced to a minimum. A torque arm is not necessary.

Vor allem wird aber die vorliegende Erfindung bei Elementen verwendet, die um die Achse rotieren, wobei die Achse feststeht. Leiterplatte und Sensorik sind mit der Achse fest verbunden, so dass die Kabelführung für die Sensorik durch die feststehende Achse selbst erfolgen kann. Speziell wird hier an die Anwendung bei Aufzügen gedacht. Bei Aufzügen ist es notwendig, die Lage der Aufzugstür exakt zu bestimmen. Erfindungsgemäss wird diese Lage durch einen Drehgeber bestimmt, der in der Rolle integriert ist, welche den Zahnriemen zum Öffnen und Schliessen der Aufzugstür bewegt. Diese Rolle dreht um eine Achse und bildet zusammen mit dieser Achse einen Ringraum, in dem sich die Leiterplatte befindet, auf der die elektronischen Bauelemente für den Drehgeber angeordnet sind. Hierzu zählt vor allem ein magnetoresistiver Sensor bzw. alternativ ein Hall-Sensor. Diesem ist ringförmig ein Magnetband oder Magnetring als Massstab zugeordnet.But above all, the present Invention used in elements that rotate about the axis, wherein the axis is fixed. PCB and sensors are with the axis firmly connected so that the cable routing for the sensors through the fixed Axis itself can be done. Special attention is paid to the application here lifts thought. For elevators it is necessary to determine the exact position of the elevator door. According to the invention this position is determined by an encoder that is integrated in the role which is the timing belt for opening and closing the elevator door emotional. This roller rotates around an axis and forms together with this axis an annular space in which the circuit board is located, on which the electronic components for the encoder are arranged are. This counts especially a magnetoresistive sensor or alternatively a Hall sensor. This is ring-shaped a magnetic tape or magnetic ring is assigned as a scale.

Die gesamte Vorrichtung kann nun als Funktionselement ausgebildet sein, bspw. Als Zahnriemenrad, Kettenrad, Riemenscheibe, Gelenkarm, Seiltrommel usw. Hierdurch entfallen Kupplungen, Kupplungsglocken od. dgl. Die erforderliche Achse/Wellenlagerung für das Funktionselement wird vom Drehgeber übernommen. Damit wird eine zusätzliche Lagerung und Kosten eingespart.The entire device can now be designed as a functional element, for example as a toothed belt wheel, chain wheel, Pulley, articulated arm, rope drum etc. This eliminates the need for couplings, Clutch bells or the like. The required axle / shaft bearing for the Functional element is taken over by the encoder. So that becomes a additional Storage and costs saved.

Eine Anordnung der Sensorik etwa mittig zwischen zwei Lagern ermöglicht eine hohe Zuverlässigkeit und Messgenauigkeit ohne Einflüsse von Torsion oder Messfehler durch Achsversatz usw.An arrangement of the sensors, for example made possible in the middle between two bearings high reliability and Measuring accuracy without influences torsion or measurement errors due to axis misalignment etc.

FIGURENBESCHREIBUNGDESCRIPTION OF THE FIGURES

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt inOther advantages, features and details The invention is more preferred from the following description embodiments as well as from the drawing; this shows in

1 eine perspektivische Ansicht einer erfindungsgemässen Vorrichtung zum Bestimmen der Umdrehung eines relativ um eine Achse rotierenden Elementes; 1 a perspective view of an inventive device for determining the rotation of a relatively rotating element about an axis;

2 einen Längsschnitt durch die Vorrichtung gemäss 1. 2 a longitudinal section through the device according to 1 ,

Gemäss 1 weist eine erfindungsgemässe Vorrichtung zum Bestimmen der Umdrehung eines relativ um eine Achse 2 rotierenden Elementes eine Rolle 1 auf, deren Mantelfläche durch einen Zahnkranz 3 gebildet wird. Diesen Zahnkranz 3 umschlingt in Gebrauchslage ein nicht näher gezeigter Zahnriemen, beispielsweise zum Bewegen einer Aufzugstür.According to 1 has an inventive device for determining the rotation of a relative to an axis 2 rotating element a role 1 on, the lateral surface by a ring gear 3 is formed. This ring gear 3 wraps around a toothed belt (not shown in detail), for example for moving an elevator door.

Die Rolle 1 dreht um die Achse 2, bzw. um einen Wellenstummel 4 (siehe 2). Ansonsten ist die Achse 2 an einer beliebigen Stelle festgelegt.The role 1 turns around the axis 2 , or a wave stub 4 (please refer 2 ). Otherwise the axis 2 set at any point.

Auf den Wellenstummel 4 ist drehfest eine Leiterplatte 5 aufgesetzt, wobei von Wellenstummel 4 und Rolle 1 ein Ringraum 6 ausgebildet wird. In dem Ringraum 6 befindet sich ein Magnetband 7, dem ein magnetoresistiver Sensor 8 zugeordnet ist. Der Sensor 8 ist mit der Leiterplatte 5 verbunden. Optional wirkt das Magnetband 7 noch mit einem Hall-Sensor 12 zur Referenzierung/Indexierung der Umdrehung der Rolle 1 zusammen.On the stub of the waves 4 is a printed circuit board 5 put on, being from wave stub 4 and role 1 an annulus 6 is trained. In the annulus 6 there is a magnetic tape 7 , which is a magnetoresistive sensor 8th assigned. The sensor 8th is with the circuit board 5 connected. The magnetic tape is optional 7 still with a Hall sensor 12 for referencing / indexing the rotation of the roll 1 together.

Links und rechts von der Leiterplatte 5 sind jeweils Lager 9 und 10 vorgesehen, in denen der Wellenstummel 4 dreht. Entsprechende elektrische Verbindungen 11 zu einer Auswerte- bzw. Steuereinheit sind in 1 durch die Bezugszahl 11 zusammenfassend dargestellt.Left and right of the circuit board 5 are camps 9 and 10 provided in which the wave stub 4 rotates. Corresponding electrical connections 11 to an evaluation or control unit are in 1 by the reference number 11 summarized.

Die Funktionsweise der vorliegenden Erfindung ist folgende:The functioning of the present Invention is the following:

Bei der Ermittlung der Drehung der Rolle 1 rotiert das Magnetband um den Sensor 8. Dies geschieht in dem Ringraum 6, d.h., innerhalb der Rolle 1. Hierdurch sind äussere mechanische oder thermische Einwirkungen auf die Messstelle auf ein Minimum reduziert. Im Service-Fall wird die gesamte Vorrichtung ausgebaut und schnell und kostengünstig durch eine neue Vorrichtung ersetzt.When determining the rotation of the roller 1 the magnetic tape rotates around the sensor 8th , This happens in the annulus 6 , that is, within the role 1 , As a result, external mechanical or thermal effects on the measuring point are reduced to a minimum. In the event of service, the entire device is removed and replaced quickly and inexpensively by a new device.

Figure 00060001
Figure 00060001

Claims (9)

Vorrichtung zum Bestimmen der Umdrehung, Drehzahl, Winkelposition od.dgl eines relativ um eine Achse (2) rotierenden Elementes (1) mittels einem Drehgeber aus zumindest einem Sensor (8) und einem diesem zugeordneten Massstab (7), dadurch gekennzeichnet, dass von der Achse (2) und dem rotierenden Element (1) ein Ringraum (6) ausgebildet ist, in welchem der Sensor (8) dem Massstab (7) zugeordnet ist.Device for determining the rotation, speed, angular position or the like of one relative to an axis ( 2 ) rotating element ( 1 ) by means of an encoder from at least one sensor ( 8th ) and a scale assigned to it ( 7 ), characterized in that from the axis ( 2 ) and the rotating element ( 1 ) an annulus ( 6 ) in which the sensor ( 8th ) the scale ( 7 ) assigned. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Element (1) um die Achse (2), welche feststeht, rotiert.Device according to claim 1, characterized in that the element ( 1 ) around the axis ( 2 ), which is fixed, rotates. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Element eine Rolle (1) mit einem Zahnkranz (3) auf ihrer Mantelfläche ist.Device according to claim 1 or 2, characterized in that the element has a role ( 1 ) with a ring gear ( 3 ) is on its lateral surface. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Drehgeber (5, 7, 8) sich zwischen zwei Lager (9, 10) befindet.Device according to one of claims 1 to 3, characterized in that the rotary encoder ( 5 . 7 . 8th ) between two camps ( 9 . 10 ) is located. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Massstab (7) im Ringraum (6) festliegt und der Sensor (8) drehfest mit der Achse (2) verbunden ist.Device according to at least one of claims 1 to 4, characterized in that the scale ( 7 ) in the annulus ( 6 ) is fixed and the sensor ( 8th ) rotatably with the axis ( 2 ) connected is. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sich der Sensor (8) auf einer Leiterplatte (5) befindet, der drehfest mit der Achse (2) verbunden ist.Device according to at least one of claims 1 to 5, characterized in that the sensor ( 8th ) on a circuit board ( 5 ), which is non-rotatable with the axis ( 2 ) connected is. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Sensor (8) nach einem magnetisch arbeitenden Abtastprinzip arbeitet bzw. insbesondere ein magnetoresistiver Sensor ist.Device according to at least one of claims 1 to 6, characterized in that the sensor ( 8th ) works according to a magnetically operating scanning principle or in particular is a magnetoresistive sensor. Vorrichtung nach wenigstens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Massstab ein Magnetband oder Magnetring (7) mit abwechselnder Polung (Inkrementalgeber) ist.Device according to at least one of claims 1 to 7, characterized in that the scale is a magnetic tape or magnetic ring ( 7 ) with alternating polarity (incremental encoder). Vorrichtung nach wenigstens einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Massstab ein Magnetband oder Magnetring mit kodierter Magnetisierung (Absolutwertgeber) ist.Device according to at least one of claims 1 to 8, characterized in that the scale is a magnetic tape or Magnetic ring with coded magnetization (absolute encoder).
DE202004007346U 2004-04-19 2004-05-05 Machine shaft movement sensor has magnetic ring attached to rotor on shaft with coding to allow determination of position Expired - Lifetime DE202004007346U1 (en)

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DE202004006334.4 2004-04-19
DE200420006334 DE202004006334U1 (en) 2004-04-19 2004-04-19 Apparatus for determining rotation or angular position of an element rotating relative to an axis having a measure or gage with an associated sensor
DE202004007346U DE202004007346U1 (en) 2004-04-19 2004-05-05 Machine shaft movement sensor has magnetic ring attached to rotor on shaft with coding to allow determination of position

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2105745A1 (en) * 2008-03-27 2009-09-30 Caldaro AB Measurement device
WO2017036476A1 (en) * 2015-08-28 2017-03-09 Schaeffler Technologies AG & Co. KG Angle-measuring device for a rotationally driven linear actuator
DE102018000674A1 (en) * 2018-01-29 2019-08-01 Baumer Ivo Gmbh & Co. Kg Position measuring system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012209715A1 (en) * 2012-06-11 2013-12-12 Horst Siedle Gmbh & Co. Kg Cable length transmitter for working cylinder e.g. hydraulic cylinder, has detection device provided with electromagnetic revolution sensor for detecting number of revolutions of magnet attached to cable drum

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2105745A1 (en) * 2008-03-27 2009-09-30 Caldaro AB Measurement device
WO2017036476A1 (en) * 2015-08-28 2017-03-09 Schaeffler Technologies AG & Co. KG Angle-measuring device for a rotationally driven linear actuator
CN107850463A (en) * 2015-08-28 2018-03-27 舍弗勒技术股份两合公司 Angle measurement unit for the linear actuator of rotation driving
US20180245675A1 (en) * 2015-08-28 2018-08-30 Schaeffler Technologies AG & Co. KG Angle-measuring device for a rotationally driven linear actuator
US10731737B2 (en) 2015-08-28 2020-08-04 Schaeffler Technologies AG & Co. KG Angle-measuring device for a rotationally driven linear actuator
CN107850463B (en) * 2015-08-28 2020-11-24 舍弗勒技术股份两合公司 Angle measuring device for a rotationally driven linear actuator
DE102018000674A1 (en) * 2018-01-29 2019-08-01 Baumer Ivo Gmbh & Co. Kg Position measuring system

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Effective date: 20120808

R071 Expiry of right
R071 Expiry of right