WO2013056960A1 - Ensemble capteur - Google Patents

Ensemble capteur Download PDF

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Publication number
WO2013056960A1
WO2013056960A1 PCT/EP2012/069000 EP2012069000W WO2013056960A1 WO 2013056960 A1 WO2013056960 A1 WO 2013056960A1 EP 2012069000 W EP2012069000 W EP 2012069000W WO 2013056960 A1 WO2013056960 A1 WO 2013056960A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
sensor
rotation
angle
holder
Prior art date
Application number
PCT/EP2012/069000
Other languages
German (de)
English (en)
Inventor
Ronny Ludwig
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2013056960A1 publication Critical patent/WO2013056960A1/fr

Links

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
    • G01D5/142—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
    • G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
    • G01D2205/20—Detecting rotary movement
    • G01D2205/22—Detecting rotary movement by converting the rotary movement into a linear movement
    • 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
    • G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
    • G01D2205/20—Detecting rotary movement
    • G01D2205/26—Details of encoders or position sensors specially adapted to detect rotation beyond a full turn of 360°, e.g. multi-rotation

Definitions

  • the invention relates to a sensor arrangement and to a method for determining a rotation angle of a shaft.
  • Magnetic measuring methods are frequently used with shaft torque sensors.
  • a magnetic field of a multipole ring which changes with a rotational movement is detected with Hall sensors and a sensor signal is converted into a torque signal.
  • Hall sensors are characterized by their high resolution, which may be less than 0.01 °.
  • torque sensors i. d. R. is still a simple revolution counting function, which is also referred to as an index function. This is a small permanent magnet that rotates past a Hall switch, thus delivering a switching signal every 360 °.
  • the document DE 10 2005 031 086 A1 describes a sensor arrangement for detecting a differential angle. It is proposed that with at least one magnetic field-sensitive sensor element, magnetic field information of a magnetic circuit having a magnetic pole wheel and a ferromagnetic flux ring with teeth be evaluated. The teeth extend to the radial tap of the magnetic field information of Magnetpolrads in the radial direction. Disclosure of the invention
  • the sensor assembly typically includes, as a first component, a disc coaxially disposed and / or affixed to the shaft for which a rotational angle is to be determined.
  • the disc has a spiral groove, which can also be referred to as a track and is formed as a recess in the disc. This groove serves as a measure of the angle of rotation, which is detected by a rotation angle sensor module as the second component of the sensor arrangement by interaction with the groove.
  • a circular disk of a torque sensor designed as a magnetic disk can also be used as a component of the sensor arrangement for determining the rotational angle of the shaft.
  • a so-called magnet unit or magnet unit of a torque sensor can be modified, wherein in a plastic carrier below a shield plate of the magnet unit in a disc, the spiral groove or depression as a track, which may include four complete revolutions around a rotation axis of the shaft, eg . by material removal, is inserted.
  • PBT polybutylene terephthalate
  • the spiral groove has a sufficient depth and a defined width for guiding a journal, which is generally designed as a journal.
  • a rotation angle sensor module as a second component of the sensor arrangement comprises a holder and a member.
  • a member in a first embodiment a lever rotatably mounted on the holder and in a second embodiment, a displaceably mounted sliding shoe is provided.
  • Sliding shoe usually comprises a bearing pin and a magnetic element designed as a dipole magnet, which is arranged in the immediate vicinity of an example.
  • a Hall or AMR element formed magnetic sensor which is optionally arranged on a holder stationary via a printed circuit board.
  • a magnetic field of the magnetic element is detected with the Hall element via the Hall effect or with the AMR element via the anisotropic magnetoresistive effect.
  • On the circuit board arranged holder is used in both embodiments as a carrier of a circuit and the magnetic sensor and as a bearing for the formed as a lever or shoe member. Thus, very small tolerances between the magnetic element and the magnetic sensor are achieved.
  • the rotational angle sensor module to be stationarily arranged relative to the rotatable shaft is to be positioned in the vicinity of the groove of the disc arranged on the shaft, wherein the bearing pin of the lever or sliding shoe engages in the recessed groove of the disc, which may be formed as part of the magnet unit of the rotational angle sensor.
  • the change of an ner field direction and / or field strength of a magnetic field of the magnetic element can be measured with the AMR or Hall element as a magnetic sensor.
  • a position-dependent change of the magnetic field usually correlates linearly with the angle of rotation of the shaft. Thus, an absolute measurement of the rotation angle is possible.
  • the invention can be used for steering angle sensors in motor vehicles.
  • an absolute rotation angle of 4 ⁇ + 1-2) steering wheel turns, ie, absolutely 1440 °, can be measured. Therefore, the groove in the disc has four completely circumferential tracks.
  • the lever is in the first embodiment by a Wnkelbetrag X, wherein X, for example. 90 °, deflected or the shoe in the second embodiment by an amount Y, wherein Y, for example, 12 mm, moved.
  • a range of angles to be detected by the sensor arrangement can be adjusted as required by a number of revolutions of the groove provided in the coil in the coil. If the groove the
  • the lever or shoe with a soft spring can be biased by a force of a few Newton, with a suitable bias of the spring tolerance-free measurement of the rotation angle is possible.
  • contact surfaces between the bearing pin and the groove are clearly predefined and thus the clearance between the journal and the
  • a compact, for example, four revolutions of a shaft absolutely measuring angle measuring device which comprises a spiral groove provided.
  • a direct correlation of a determined angle measurement signal is given to a rotation angle of the shaft, so that a rotation angle can be determined without additional calculation by absolute measurement.
  • a microcontroller otherwise required for this purpose can be dispensed with.
  • the sensor arrangement is compact and requires a small footprint and a relatively simple construction and connection technology.
  • the sensor arrangement offers a so-called TPO (True Power On) functionality.
  • a plain bearing material for example a plain bearing plastic
  • the sensor arrangement is wear-resistant as material for the disc and / or for the bearing journal.
  • the invention provides an alternative to conventional rotation angle sensors. Furthermore, the disk of the sensor arrangement can be integrated as a module of a torque sensor in this torque sensor, so that now can be dispensed with an otherwise usual so-called index function for counting rotation in rotation angle sensors.
  • the sensor arrangement according to the invention is designed to carry out all the steps of the presented method.
  • individual steps of this method can also be carried out by individual components of the sensor arrangement.
  • functions of the sensor arrangement or functions of individual components of the sensor arrangement can be implemented as steps of the method.
  • steps of the method it is possible for steps of the method to be realized as functions of at least one component of the sensor arrangement or of the entire sensor arrangement.
  • Figure 1 shows various schematic representations of a first component of a sensor arrangement according to the invention, which can be used in an embodiment of the sensor arrangement according to the invention described in the following figures.
  • FIG. 2 shows various schematic representations of a first component designed as a rotation angle sensor module for a first embodiment of a sensor arrangement according to the invention.
  • FIG. 3 shows the first embodiment of the sensor arrangement according to the invention in schematic representations.
  • FIG. 4 shows a schematic representation of a mode of operation of the first embodiment of the sensor arrangement according to the invention.
  • FIG. 5 shows various schematic representations of a second embodiment of a rotation angle sensor module for a second embodiment of the sensor arrangement according to the invention.
  • Figure 6 shows a schematic representation of the second embodiment of the sensor arrangement according to the invention in different views.
  • Figure 7 shows a schematic representation of an operation of the second embodiment of the sensor arrangement according to the invention.
  • FIG. 8 shows a known from the prior art torque sensor in schematic representations.
  • FIG. 9 shows a schematic illustration of an example of a rotation angle sensor known from the prior art.
  • Figure 1 The illustrated schematically in Figure 1 the first component of a sensor arrangement according to the invention for determining a rotational angle of a shaft 2 is formed as a circular disc 4, which coaxially surrounds the shaft 2 and here on a bottom axially oriented side of the disc 4 has a spiral groove 6 which a rotation axis 8 of the shaft 2 completely rotates four times.
  • Figure 1a shows the bottom of the disc 4, Figure 1 b, the disc 4 in a sectional view and Figure 1 c, the disc 4 from above. It is envisaged that the disc 4 has a sleeve 10, via which the disc 4 is rotatably arranged on the shaft 2 and thus secured.
  • a magnetic circuit 12 is additionally arranged, which is formed as a component of a torque sensor not shown here. Accordingly, it is provided that the disk 4 shown here can be used as a carrier of the magnetic circuit 12 of a so-called magnet unit of the torque sensor and at the same time as a component of one of the sensor arrangements described below.
  • a shield plate 14 is also arranged in the disc 4, over which the magnetic circuit 12 is electromagnetically shielded from the particular in Figure 1 b clearly visible groove of the spiral groove 6.
  • the disc 4 is formed here as a plastic carrier.
  • the spiral groove 6 can be inserted into the pane 4, for example, or inserted into a finished blank of the pane 4 by a material-removing method. Since the spiral groove 6 completely rotates and / or circumscribes the axis of rotation 8 of the shaft 2 four times, a rotational angle of the shaft 2 can be determined by up to four revolutions with a sensor arrangement comprising a disk 4 with a helical groove 6 formed in this way. It is provided in an embodiment of the invention that a distance A of a center of the groove 6 in the radial direction of the disc 4 and / or the groove 6 from the axis of rotation 8 of the shaft with increasing angle ⁇ also increases.
  • a functional The relationship between the distance A (a) and the angle a, where dA / da> 0, may, for example, be given by the formula:
  • a (a) A 0 + ma (1), where A 0 is a minimum distance to be determined of a point of the groove 6 from the rotation axis 8, ⁇ is a rotation angle of the shaft 2 and m is a proportionality factor describing a spread of the groove 6 , is. If a shape of the groove 6 can be described by the formula (1), the groove 6 is corresponding to an Archimedean spiral or a part of an Archimedean
  • the first component of a sensor arrangement according to the invention designed as a disk 4 with a helical groove 6 can be described for the first embodiment of the sensor arrangement 44 described below (FIGS. 3 and 4) and for the second embodiment of the sensor arrangement 72 described below (FIG and 7).
  • a rotation angle sensor module 20 comprises a holder 22 and a lever 24 formed as a member of plain bearing plastic, wherein at a first end of this lever 24, a bearing pin 26 is arranged from plain bearing plastic. Furthermore, the rotation angle sensor module 20 comprises a printed circuit board 28, on which the holder 22 is mounted. 2 b shows the rotation angle sensor module 20 in a sectional view, FIG. 2 c shows the rotation angle sensor module 20 in a lateral view, FIG. 2 d shows the printed circuit board 28 and FIG. 2 e shows the element formed as a lever 24 in plan view and in sectional view. It is envisaged that a second end of the lever 24 in a bearing guide
  • a Wnkel of 90 ° (curved double arrow) is rotatably mounted.
  • a magnetic element 32 designed here as a dipole magnet is arranged in or on the lever 24.
  • a magnetic sensor 34 is provided in the region of the magnetic element 32 as a further component of the rotational angle sensor module 20. seen, which is here connected via the circuit board 28 with the holder 22 and thus arranged on the holder 22.
  • the rotational angle sensor module 20 presented with reference to FIG. 2 is to be arranged in a stationary manner next to a rotatable shaft 2 in the region of a disk 4 with a spiral groove 6 (FIG. 1). It could be a fixed attachment of the rotation angle sensor module 20 z. B. via pins 36, which connect the circuit board 28 to the holder 22 by hot caulking, done simultaneously.
  • FIG. 2 also shows that the bearing journal 26 has a bearing head 38, which is arranged in the spiral groove 6 of the disk 4 during operation of the first embodiment of the sensor arrangement 44 according to the invention described with reference to FIGS. 3 and 4.
  • an optional spring 40 and in FIG. 2d a bearing bore 42 are shown in FIGS. 2a and 2c.
  • the lever 24 is rotatably supported in the bearing guide 30 of the holder 22 and on the bearing bore 42 in the circuit board 28 in the radial direction and in the axial direction between the holder 22 and the circuit board 28. To reduce the tolerances or to reduce the bearing clearance between the lever 24 and the
  • the lever 24 can be slightly biased by the spring 40 optionally with a force of a few Newtons.
  • this first embodiment of the sensor arrangement 44 for determining a rotational angle of a shaft 2 comprises the disc 4 presented in FIG. 1, which has the helical groove 6, and the first rotational angle sensor module 20 presented on the basis of FIG.
  • the first embodiment of the rotation angle sensor module 20, which is positioned in the axial direction below the disc 4 and fixed relative to the shaft 2 to a not shown here component, engages with the bearing head 38 of the journal 26 in the spiral groove 6, which also serves as a track can be designated.
  • the bearing pin 26 is guided in stock in the groove 6. If the disk 4 rotates relative to the fixed rotation angle sensor module 20, then it changes The position of the lever 24, for example. On the bearing bore 42, and thus the magnetic member 32 which is positioned in a pivot point of the lever 24, relative to the magnetic sensor 34.
  • the angular position of the lever 24 is the rotational angle of the shaft 2 within 1440 °, which corresponds to four revolutions, always absolutely unique within the manufacturing tolerances of all components.
  • a relationship of a rotation angle ß of the lever 24 to the example is possible.
  • a typical AMR element as a magnetic sensor 34 has a Wnkelaufates of 0.05 °.
  • FIG. 5 shows a second embodiment of a rotation angle sensor module 50, which is designed as a component of the second embodiment of the sensor arrangement 72 according to the invention, which is presented with reference to the following FIGS. 6 and 7.
  • This second rotation angle sensor module 50 comprises a holder 52 made of plain bearing plastic as a member, a sliding shoe 54 likewise formed of plain bearing plastic, on which a bearing pin 56 which is elliptical in cross section is arranged.
  • Figure 5a shows the rotation angle sensor module 50 in plan view
  • Figure 5b in a sectional view
  • Figure 5c in a side view.
  • FIG. 5d shows a printed circuit board 58 as a further component of the rotation angle sensor module 50.
  • FIG. 5e shows the member formed here as a sliding shoe 54 from various perspectives.
  • the here formed in cross-section U-shaped holder 52 encloses a sliding portion 60 along which the shoe 54 is mounted axially displaceable.
  • the sliding block 54 is arranged between mutually parallel legs 65 of the holder 52.
  • the sliding shoe 54 contacts an inner wall of the holder 52 designed as a plain bearing guide 63.
  • FIGS. 5a and 5c also show an optional spring 62, via which the sliding shoe 54 is connected to the holder 52 and used to reduce the tolerances or to reduce a Bearing clearance between the bearing pin 56 and the shoe 54 is biased with a force of a few Newton.
  • the sliding region 60 indicated in dashed lines in FIG. 5d on the printed circuit board 58 is made of a lubricious material, for example a metallic coating, so that the sliding shoe 54 can move with little friction relative to the holder 52.
  • the U-shaped holder 52 is fastened on the printed circuit board 58 via pins 64, for example by means of hot caulking.
  • a fixed connection to a component, not shown, which is arranged next to a rotatable shaft 2, on which in turn a disc 4 with a spiral-shaped groove 6 (FIG. 1) is to be arranged, can be made via the same pins 64.
  • a bearing head 66 of the bearing block 56 disposed on the bearing block 54 in the spiral groove 6 of the disk 4.
  • a large half-axis of the elliptical cross-section bearing pin 56 is arranged in the tangential direction of the groove 6, whereas a small half-axis of the bearing pin 56 is to be arranged in the radial direction of the spiral groove 6.
  • the second embodiment of the torsion sensor module 50 is to be arranged relative to the disk 4 and the spiral groove 6 so that a displacement of the shoe 54 relative to the holder 52 is displaced in the radial direction upon rotation of the shaft 2 about its axis of rotation 8, when the trunnion 56 is disposed in the spiral groove 6 and moves along the groove 6 upon rotation of the shaft 2.
  • the sliding shoe 54 as a member of the second embodiment of the rotation angle sensor module 50 is formed as a dipole magnetic element 68 which can move relative to the holder 52 relative to a displacement of the shoe 54 relative to a magnetic sensor 70 on a lower side of the printed circuit board 58 is fixed and thus secured via the circuit board 58 to the holder 52.
  • FIG. 6 shows the second embodiment of the sensor arrangement 72 according to the invention from various perspectives.
  • This second embodiment of the sensor arrangement 72 for determining a rotational angle of the shaft 2 comprises
  • the horizontal and / or radial position of the sliding shoe 54 changes according to the guided in the spiral groove 6 as a track bearing pin 56 whose distance from the axis of rotation 8 of the shaft 2 according to a ner position along the groove 6 changes.
  • the field direction and / or field strength of the magnetic field of the magnetic element 68 to the magnetic sensor 70 changes.
  • the change in the field direction and / or field strength is thus a measure of the rotation angle of the disc 4.
  • a position of the shoe 54 is the angle of rotation of the magnet unit in the range from 0 ° to 1440 °, ie of four revolutions of the shaft 2, within the manufacturing tolerances of all components always absolutely unique.
  • Figure 7 shows the situation at a rotation angle of -720 ° against the
  • Rotational angle ⁇ of the shaft 2 to assign a direction and / or strength of the magnetic field detected by the magnetic sensor 70.
  • the spiral groove 6 runs as a track in the disk 4 at least once around the axis of rotation 8 of FIG
  • the bearing pin 26, 56 is guided in the groove 6, and takes depending on the angle of rotation of the shaft 2 a position and thus a distance A to the axis of rotation 8, from which of the rotation angle sensor module 20, 50 of the rotation angle ⁇ is determined. A distance of a point of the spiral groove 4 from the rotation axis 8 of the shaft 2 increases with a value of the rotation angle ⁇ .
  • Each presented rotation angle sensor module 20, 50 has a holder 22, 52 and a member on which the bearing pin 26, 56 is arranged. The member is movably supported relative to the holder 22, 52, wherein a position of the member relative to the holder 22, 52 is dependent on a position of the trunnion 26, 56 in the groove 6.
  • the member has a magnetic element 32, 68 which generates a magnetic field.
  • the holder 22, 52 has a magnetic sensor 36, 70, for example, a Hall or AMR sensor, on.
  • the magnetic element 32, 68 may be arranged in and / or on the member and the magnetic sensor 36, 70 in and / or on the holder 22, 52.
  • the magnetic sensor 36, 70 detects a field strength and / or a field direction of the magnetic field. From these parameters of the magnetic field, the position of the bearing pin 26, 56 along the groove 6 and therefrom the angle of rotation of the shaft 2 is determined. A relationship of the angle of rotation of the shaft 2 and the position of the bearing pin 26, 56, usually the radial distance A of the journal 26,
  • Disk 4 stationary magnet sensor 36, 70 is detected, can also be described by a formula.
  • the member is designed as a lever 24, wherein at a first end of the lever 24 of the bearing pin 26 is arranged. A second end of the lever 24 is rotatably supported radially on the holder 22.
  • the member is designed as a sliding shoe 54, which has the bearing pin 56 and which is displaceably mounted along the holder 52, for example in the radial direction to the axis of rotation 8.
  • the member ie either the lever 24 or the shoe 54, via a spring 40, 62 connected to the holder 22, 52.
  • the disc 4 and the bearing pin 26, 56 with the bearing head 38, 66 may be formed of plain bearing plastic.
  • One of the described sensor arrangements 44, 72 for determining the angle of rotation of the shaft 2 can also be combined with a torque sensor, wherein the disc 4 with the groove 6 is formed as a module of the torque sensor.
  • a torque sensor also comprises a disc-shaped component, which is arranged coaxially with a shaft 2 and is referred to, for example, as a magnet unit.
  • an imaginary sensor arrangement 44, 72 for determining the angle of rotation can be combined with a torque sensor.
  • FIG. 8 schematically illustrates a prior art torque sensor 100 configured to determine a torque between a first shaft 102 and a second shaft 104 interconnected by a torsion bar 106.
  • a magnetic flux unit 108 is arranged on the first shaft 102 and a magnet unit 110 is arranged on the second shaft 104.
  • this torque sensor 100 comprises a sensor unit 112, which is arranged stationary relative to the two shafts 102, 104, an axial fastening ring 114 arranged between the magnetic flux unit 108 and the sensor unit 112 and also a lid 1 16 with an anti-rotation pin to be fixed in place arranged with a magnetic sensor printed circuit board 1 18 is arranged.
  • the magnetic sensor between two rings of ferromagnetic material, which are formed as components of the magnetic flux unit 108, is arranged. With relative rotation of the two shafts 102, 104 to each other, a magnetic field generated by the magnet unit 110 and rotating with the second shaft 104 is amplified in a region between the two magnetic flux conducting rings of the magnetic flux unit 108 and detected by the magnetic sensor.
  • FIGS. 8c and 8d show that a disc 120, which is fastened to the second shaft 104 via a sleeve 122, is arranged on the second shaft 104. It is also conceivable to equip this disk 120 with a spiral groove 6, as already described with reference to one of the preceding FIGS. 1 to 7. Furthermore, it is possible to arrange, in addition to the second shaft 104, below the disk 120 one of the two presented rotation angle sensor modules 20, 50, wherein a bearing journal 26, 56 of such a rotation angle sensor module 20, 50 is to be arranged in the spiral groove 6.
  • Steering angle sensor 130 known, with which a rotation angle and thus steering angle of a steering column 132 formed as a shaft can be determined.
  • This steering angle sensor 130 comprises a master gear 134, two measuring gears 136, magnets 138, a microcontroller designed as a circuit 140 and sensor elements 142, which are designed here as GMR elements with analog-to-digital converters for providing a serial data transmission.
  • This steering angle sensor 130 works on the vernier principle. It is provided that the measuring gears 136 have a different number of teeth and thus a different ratios, so that the
  • Measuring gears 136 change their rotational position relative to the master gear 134 different speed.
  • the total angles can be calculated by means of a mathematical function. Therefore, a measuring range of several shaft revolutions can be covered with this measuring principle without revolution counter.

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

Abstract

Ensemble capteur conçu pour déterminer un angle de rotation d'un arbre (2), présentant un disque (4) qui est placé sur l'arbre (2) et comporte une rainure (6) hélicoïdale qui tourne au moins une fois autour de l'axe de rotation de l'arbre (2), et présentant un module capteur d'angle de rotation pourvu d'un tourillon qui est guidé dans la rainure (6), ce tourillon prenant une certaine position en fonction de l'angle de rotation de l'arbre (2) et le module capteur d'angle de rotation déterminant l'angle de rotation d'après la position du tourillon.
PCT/EP2012/069000 2011-10-21 2012-09-26 Ensemble capteur WO2013056960A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011084933A DE102011084933A1 (de) 2011-10-21 2011-10-21 Sensoranordnung
DE102011084933.5 2011-10-21

Publications (1)

Publication Number Publication Date
WO2013056960A1 true WO2013056960A1 (fr) 2013-04-25

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PCT/EP2012/069000 WO2013056960A1 (fr) 2011-10-21 2012-09-26 Ensemble capteur

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DE (1) DE102011084933A1 (fr)
WO (1) WO2013056960A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105890513A (zh) * 2015-02-16 2016-08-24 罗伯特·博世有限公司 用于获取车辆中的旋转构件的旋转角度的传感器组件
GB2540599A (en) * 2015-07-22 2017-01-25 Cambridge Medical Robotics Ltd Rotary encoder

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386439A2 (fr) * 1989-03-08 1990-09-12 Robert Bosch Gmbh Palpeur d'angle pour déterminer la rotation d'un arbre
DE102005043301A1 (de) * 2004-09-23 2006-03-30 Trw Automotive Safety Systems Gmbh & Co. Kg Vorrichtung zur Bestimmung eines absoluten Drehwinkels
DE102005031086A1 (de) 2005-07-04 2007-01-18 Robert Bosch Gmbh Sensoranordnung zur Erfassung eines Differenzwinkels
DE102006061929A1 (de) * 2006-12-20 2008-06-26 Takata-Petri Ag Optischer Lenkwinkelsensor zur Bestimmung des Absolutwertes des Lenkwinkels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0386439A2 (fr) * 1989-03-08 1990-09-12 Robert Bosch Gmbh Palpeur d'angle pour déterminer la rotation d'un arbre
DE102005043301A1 (de) * 2004-09-23 2006-03-30 Trw Automotive Safety Systems Gmbh & Co. Kg Vorrichtung zur Bestimmung eines absoluten Drehwinkels
DE102005031086A1 (de) 2005-07-04 2007-01-18 Robert Bosch Gmbh Sensoranordnung zur Erfassung eines Differenzwinkels
DE102006061929A1 (de) * 2006-12-20 2008-06-26 Takata-Petri Ag Optischer Lenkwinkelsensor zur Bestimmung des Absolutwertes des Lenkwinkels

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105890513A (zh) * 2015-02-16 2016-08-24 罗伯特·博世有限公司 用于获取车辆中的旋转构件的旋转角度的传感器组件
CN105890513B (zh) * 2015-02-16 2019-10-08 罗伯特·博世有限公司 用于获取车辆中的旋转构件的旋转角度的传感器组件
GB2540599A (en) * 2015-07-22 2017-01-25 Cambridge Medical Robotics Ltd Rotary encoder
US10627260B2 (en) 2015-07-22 2020-04-21 Cmr Surgical Limited Rotary encoder
GB2540599B (en) * 2015-07-22 2021-04-14 Cmr Surgical Ltd Rotary encoder.
US11333531B2 (en) 2015-07-22 2022-05-17 Cmr Surgical Limited Rotary encoder
US11674823B2 (en) 2015-07-22 2023-06-13 Cmr Surgical Limited Rotary encoder

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