EP3887765A1 - Système de détection d'angle de rotation à capteur 3d et axe de rotation parallèle à cartes de circuits imprimés - Google Patents

Système de détection d'angle de rotation à capteur 3d et axe de rotation parallèle à cartes de circuits imprimés

Info

Publication number
EP3887765A1
EP3887765A1 EP19816227.3A EP19816227A EP3887765A1 EP 3887765 A1 EP3887765 A1 EP 3887765A1 EP 19816227 A EP19816227 A EP 19816227A EP 3887765 A1 EP3887765 A1 EP 3887765A1
Authority
EP
European Patent Office
Prior art keywords
rotation
sensor
arrangement
axis
magnet
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.)
Withdrawn
Application number
EP19816227.3A
Other languages
German (de)
English (en)
Inventor
Jürgen GRIES
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP3887765A1 publication Critical patent/EP3887765A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/08—Range selector apparatus
    • F16H59/10—Range selector apparatus comprising levers
    • F16H59/105—Range selector apparatus comprising levers consisting of electrical switches or 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
    • G01D5/14—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
    • 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
    • G01D5/24428—Error prevention
    • G01D5/24433—Error prevention by mechanical means
    • 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
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure

Definitions

  • the invention relates to a sensor arrangement, a design method for the sensor arrangement, a selector lever arrangement and a manufacturing method for the selector lever arrangement.
  • Conventional magnetic rotation angle sensor systems use a diametrically magnetized magnet 6, which is mounted on a shaft 10, to detect an actual rotation angle WT in the form of a determined rotation angle WE about an axis of rotation 12.
  • the SMD sensor element in the form of a sensor 18 is placed below the magnet 6 on a circuit board 20 and calculated using the arctangent (atan) function and the planar field components Bx and By (the field of the magnet), which is parallel to the circuit board level 20 run, the (determined) angle of rotation WE of the rotating encoder magnet (magnet 6).
  • the axis of rotation 12 of the magnet 6 is perpendicular to the circuit board level or circuit board 20 or de ren surface 22.
  • the object of the present invention is to provide improvements with respect to a rotation angle detection.
  • the sensor arrangement serves to determine an angle of rotation of a magnet about an axis of rotation.
  • the angle of rotation is that of the magnet about the axis of rotation, rela tive to a base support.
  • the sensor arrangement contains the base support and the magnet.
  • the magnet can be rotated about the axis of rotation relative to the base support.
  • the magnet has a diametrical or radial or arc-shaped or sinusoidal magnetization direction, in particular with respect to the axis of rotation.
  • Magnetic geometry is particularly round or cylindrical, but it can also be used in any be shaped.
  • the magnet is used to generate a magnetic measuring field or the magnet generates the measuring field at least when the sensor arrangement is in operation.
  • the magnet is in particular a permanent magnet.
  • the sensor arrangement contains a sensor.
  • the sensor is in particular a Hall sensor.
  • the sensor is arranged stationary relative to the base carrier.
  • the sensor is used to detect a radial component and a tangential component of the measuring field.
  • the corresponding radial direction and tangential direction are to be understood with respect to the axis of rotation.
  • the tangential component is the component in the direction of rotation.
  • the sensor is used to determine the angle of rotation from the radial component detected by the sensor at the sensor location and the tangential component detected by the sensor at the sensor location.
  • the sensor determines the components from an arc tangent function (atan function).
  • the sensor is mounted at a radial distance from the axis of rotation next to the axis of rotation on a printed circuit board and electrically contacted on this or its conductor tracks etc.
  • the circuit board is part of the sensor arrangement.
  • the circuit board is fixed to the base frame.
  • a surface of the circuit board runs at least on the sensor or at the location of the sensor or in the area of the sensor parallel and tangenti al to the axis of rotation.
  • the magnet has a central plane lying transversely or perpendicular to the axis of rotation, in particular a plane of symmetry.
  • the central level can also run through its focus.
  • the sensor is offset from the central plane of the magnet in the axial direction of the axis of rotation by an axial distance. The axial distance is different from zero.
  • the invention is based on the knowledge that, in the classic rotation angle detection according to FIG. 4, there is a very large area of high signal linearity directly below the magnet. In the case of the arrangement parallel to the axis, however, the linear signal range is very small and cannot be found directly under the magnet. This linear range depends on the magnetic material, the magnet size, shape, type of magnetization and the sensor distance (radial / axial) to the magnet (center). This area must be determined in order to be able to use the arrangement parallel to the axis with a linear sensor output signal.
  • the magnet or sensor are therefore placed opposite one another with an axial offset or have an axial offset. The two components magnet and sensor are therefore not placed or installed symmetrically.
  • the axial distance and the radial distance are therefore selected such that a curve of the angle of rotation determined by the sensor over the actual angle of rotation of the magnet (in the case of linear-linear application) with regard to its linearity to an error measure between the determined angle of rotation (WE) and the actual angle of rotation (WT) is optimized, or that the determined angle of rotation in each case corresponds as closely as possible to the actual angle of rotation.
  • the error measure corresponds to a maximum error of 10 ° in relation to a full rotation of the magnet by 360 °.
  • the error is preferably less than 5 °, preferably less than 3 °, preferably less than 2 °.
  • an error frame for the determined angle of rotation compared to the actual angle of rotation (360 ° with a full revolution of the magnet about the axis of rotation) is defined.
  • Error courses result from the selection of different sensor positions compared to the magnet. Corresponding curves or courses deviate very quickly from the ideal course, even with a certain regularity. The courses show errors of approx. 40 degrees or more compared to the ideal case. Such large errors in an output of the sensor arrangement compared to the actual angle of rotation or such sensor arrangements are generally no longer usable.
  • Additional sources of error are mechanical tolerances such as a tilted position of the magnet. For example, errors of +/- 4 degrees or of +1.65 degrees and - 1.55 degrees are realistically achievable and acceptable.
  • Hall plates themselves are also installed in a sensor, for example with tolerances of 0.3 millimeters. This means that if it is taken into account that sensor positions are shifted iteratively, for example, by 0.5 millimeters, it is increasingly difficult from a practical point of view to arrive at an exact linearity.
  • the courses of the radial component and the tangential component of the measuring field at the location of the sensor are not ideally sinusoidal or cosine-shaped because of the theoretical arrangement geometry alone, but also because of tolerances, inaccuracies, real field distortions etc.
  • a back evaluation using the atan function in the form of the angle of rotation determined by the sensor therefore does not exactly provide the actual angle of rotation of the magnet.
  • a characteristic curve, in which the course of the determined angle of rotation is plotted against the actual angle of rotation therefore does not exactly match the ideal course of the actual angle of rotation and is therefore, in particular, not exactly linear, but in particular S-shaped.
  • the course of the angle of rotation actually determined changes.
  • the axial distance and / or the radial distance are varied in such a way or until a combination of the axial distance and the radial distance is found within the scope of the corresponding variation (that is, within the scope of the possibilities of placement, in particular a limited selection) which minimizes the deviation between the determined angle of rotation and the actual angle of rotation (especially within all tested placements).
  • the corresponding sizes are checked in a radial-axial plane of the axis of rotation in a grid-like manner with a suitable grid spacing and a suitable number of grid points at all grid points, and the optimal grid point (radial spacing / axial spacing) is selected for the placement of the sensor.
  • the person skilled in the art has a large number of selection options both for a corresponding optimization process and for a corresponding measure of the deviation between the determined and actual rotation angle.
  • the person skilled in the art is able to make a suitable selection for a specific sensor arrangement .
  • the measuring field is anchored to the magnet so that it rotates around the axis of rotation.
  • the atan determination from two components is sufficiently known to the person skilled in the art and will not be explained in more detail here.
  • the "Angle of rotation” can be an actual absolute angle value, for example in degrees, or each of the dimensions clearly correlated with the angle of rotation.
  • the circuit board therefore runs "parallel" to the axis of rotation at the location of the sensor.
  • SMD mounting surface mounted device
  • a sensor is selected which can determine corresponding components in parallel in its corresponding mounting position (tangential component) and perpendicular to the printed circuit board (radial component).
  • the circuit board surface is used for mounting the sensor.
  • the sensor is - in technical jargon - "below” the axis of rotation and “offset below” the magnet.
  • the “tangential component” is therefore a planar field component or a parallel field component with respect to the circuit board and the sensor (at the location of the sensor) with respect to the axial direction of the axis of rotation.
  • the “radial component”, on the other hand, is a vertical or vertical field component with respect to the printed circuit board and the sensor and a radial field component with respect to the axial direction.
  • the axis of rotation of the magnet thus runs parallel and spaced from the printed circuit board surface.
  • the axis of rotation can also be understood as a magnetic axis, the magnet as a master magnet.
  • An Anord voltage in which the axis of rotation of the magnet is perpendicular to the circuit board, can not always be implemented inexpensively in practice, especially if a (second axis of rotation) on which a rotary movement is recorded should run parallel to the circuit board. Then, for example via a gearbox, the movement of the second axis of rotation on the first axis of rotation of the magnet would have to be implemented by 90 °, so that the above structural arrangement (FIG. 4, axis of rotation of the magnet perpendicular to the circuit board) is achieved.
  • wired components TFT - through hole technology
  • the senor's sense of direction compared to SMD Components can also be rotated by 90 ° and the axis of rotation of the magnet runs parallel to the circuit board. A mechanical conversion of the rotary movement by 90 ° would then no longer be necessary.
  • THT technology is not desirable due to the more complex production.
  • the present invention therefore describes an arrangement between the magnetic axis (axis of rotation) and the printed circuit board, which enables a rotation angle detection of the encoder magnet even with the axis of the magnet (the axis of rotation) parallel to the printed circuit board.
  • a diametrically magnetized magnet e.g. Ring magnet, used and an SMD sensor element, but instead of the planar field components ("Bx, By", based on the circuit board or its surface or its level), a vertical field component ("Bz”) and a planar field component (Bx / By) and can therefore be evaluated using the atan function.
  • the (SMD) sensor should not be placed exactly in the center below the magnet 89 (on the central plane), but rather somewhat offset from the axial plane of symmetry (or central plane) of the magnet.
  • This constructive offset enables a linear characteristic (of the measured angle of rotation) over the (actual) angle of rotation (of the magnet) to be achieved.
  • the best possible control of the sensor is also ensured with regard to the induction range of the sensor.
  • the choice of the structural offset is then also determined by the lower or upper induction working range of the sensor (senso elements).
  • a sensor location mounting location of the sensor
  • a sensor location can be found which forms the best possible linearity of the determined angle of rotation (signal linearity) or the best possible compromise between signal linearity and sensor control.
  • the course is optimized in such a way that a compromise between the linearity of the course and a control of the sensor is optimized.
  • the signal linearity optimized not only is the signal linearity optimized, but also the induction working range of the sensor is taken into account or the corresponding compromise is optimized.
  • the amplitude of the measuring field at the location of the sensor for the respective actual angle of rotation is also taken into account.
  • the "modulation" is understood with regard to the induction range of the sensor. The modulation is thus limited by the lower and upper induction working range, e.g. 20-100 mT. In particular, 50-60mT are chosen for the modulation in the compromise. According to the invention, the best possible compromise between sensor control and signal linearity (as explained above, within the scope of the possibilities considered) can be found.
  • the course of the determined rotation angle and - if available i.e. for the above Embodiment with a compromise between linearity and modulation - the modulation, optimized on the basis of an FEM analysis of the measuring field.
  • the FEM analysis takes place at least at the location of the sensor. The corresponding optimization can then be carried out theoretically or on a computer, tests or measurements are not necessary for this.
  • the optimization is or is carried out in such a way that, based on a rasterized FEM analysis of predeterminable axial distances and radial distances, such a pair is or is selected that has a comparatively optimal linearity of the course (or optimal results also in the With regard to other embodiments, for example the above-mentioned compromise).
  • a corresponding procedure has already been explained above, for example, using a corresponding "grid”.
  • the grid spacings are in particular at least 0.1 mm or at least 0.2 mm or at least 0.3 mm or at least 0.4 mm or at least 0.5 mm or at least 1 mm.
  • the grid spacing is in particular at most 1, 5 mm or at most 1 mm or at most 0.75 mm or at most 0.5 mm or at most 0.3 mm or at most 0.1 mm.
  • the signal error compared to neighboring positions can be minimized to such an extent that the raw (unlinearized) sensor signal has an error of almost zero.
  • the error for the optimized position is less than 4 ° compared to the ideal sensor line. With an even finer step size, an almost ideal signal (error almost zero) can be achieved.
  • “Specifiable” here means in particular a technically practical, as small as possible, but sufficient number of grid points to be examined, which, however, are placed sufficiently densely or in technically sensible gradations in a correspondingly sensible radial-axial area .
  • the magnet is connected in a rotationally fixed, in particular fixed, manner to a shaft running along the axis of rotation.
  • the magnet can therefore be rotated together with the shaft about the axis of rotation.
  • the shaft can then be used to record a rotation signal to be detected, which is then implemented directly on the magnet and thus on the determined rotation angle.
  • the senor is an SMD sensor which is mounted and electrically contacted on a surface of the printed circuit board.
  • the senor is a 3D sensor.
  • This can be a "real" 3D sensor that can actually evaluate three field components that are perpendicular to each other.
  • the sensor can also be one that can actually only output two detected field components, but the respective detection direction can be programmed in the sensor.
  • the radial component, in particular the field Component of the measuring field perpendicular to the circuit board level can also be detected when an SMD sensor is used.
  • the magnetic material and / or the magnet volume is also varied or selected such that the course of the determined angle of rotation (etc. .) is optimized.
  • additional, variable parameters are available in order to achieve further improved results.
  • the sensor arrangement contains an adjustable compensation arrangement. This serves to compensate for a residual error of the mean angle of rotation compared to the actual angle of rotation. There is usually a residual error even after the optimization, because even with the best possible optimization, an exact match between the determined and the actual angle of rotation is generally not possible. The corresponding residual error can then be at least further or completely compensated for by the compensation arrangement.
  • the compensation arrangement can contain, for example, scaling of measured variables or addition of correction values. A wide range of options is available to the expert.
  • the object of the invention is also achieved by a design method according to claim 11 for the sensor arrangement according to the invention, in which the axial distance and the radial distance have been selected such that a course of the determined angle of rotation over the actual angle of rotation with regard to its linearity is based on an error between the determined angle of rotation and the actual angle of rotation is optimized.
  • an initial axial distance and radial distance (and optionally starting values for further parameters according to the above-mentioned embodiments) are selected.
  • a course of the determined angle of rotation is then determined.
  • the axial distance is then determined according to an iteration process and / or the radial distance (and / or the further parameters) varies in order to optimize the course as explained above.
  • the design method using an FEM analysis finite element method for electromagnetic fields of the measuring field for the respective current axial distance and radial distance (or in other embodiments for changed parameters, such as material selection, magnetic volume, etc. .) carried out.
  • FEM analysis finite element method for electromagnetic fields
  • This variant of the method has also been explained above in a meaningful manner.
  • the object of the invention is also achieved by a selector lever arrangement according to claim 13 for a vehicle, with a selector lever movable between at least two positions for the selection of a vehicle function and with a sensor arrangement according to the invention, the selector lever being motion-coupled to the magnet, and the positions based on of the determined angle of rotation are separable. Based on the determined angle of rotation, the position or its change can be concluded.
  • the advantages of the sensor arrangement and the design method, which have already been explained above, are therefore also incorporated into corresponding selector lever arrangements.
  • a sensor arrangement is therefore already available within the selector lever arrangement, which has a characteristic curve optimized with regard to its linearity with respect to the determined and actual rotation angle.
  • the selector lever arrangement is in particular one for selecting a driving and / or gear stage in a vehicle.
  • the vehicle is in particular a special automobile, in particular with a semi / automatic transmission with various drive and / or gear stages selectable by the selector lever.
  • the compensation arrangement in a preferred embodiment in connection with a sensor arrangement with a compensation arrangement, is or is set within the scope of an end-of-line setting with regard to the selector lever arrangement during its manufacture. Based on the already optimized sensor arrangement, the compensation arrangement only has to take over the above-mentioned residual compensation within the selector lever arrangement and can thus be set in a particularly simple and uncomplicated manner.
  • the object of the invention is also achieved by a manufacturing method according to claim 15 for an inventive selector lever arrangement with compensation arrangement.
  • the sensor arrangement is optimized in the method.
  • the sensor arrangement is then installed with or in the selector lever arrangement.
  • the compensation arrangement is set as part of the end-of-line setting.
  • FIG. 1 shows a selector lever arrangement according to the invention with a sensor arrangement in
  • FIG. 2 shows the sensor arrangement from FIG. 1 in a frontal view
  • FIG. 3 shows a diagram with a determined angle of rotation, plotted against an actual angle of rotation
  • FIG. 4 shows a rotation angle sensor system according to the prior art
  • FIG. 5 shows a diagram of the determined angle of rotation, plotted against an actual angle of rotation for different sensor positions
  • FIG. 6 shows the sensor positions for the determinations according to FIG. 5.
  • Figure 1 shows a selector lever arrangement 2 for a vehicle, not shown, here an automobile, with a selector lever 4.
  • the selector lever 4 is movable between two positions P1, 2, as indicated by arrows.
  • a gear stage forward, reverse, parking, gear selection
  • the current position of the selector lever 4 is to be detected in order to be able to control the transmission accordingly.
  • the selector lever 4 is coupled in motion with a magnet 6.
  • the movement coupling takes place in that the magnet 6 is rotatably mounted on a shaft 10, the selector lever 4 in turn being coupled to the shaft 10 in a manner not explained in more detail.
  • Magnet 6 and shaft 10 are depending on the position P1, 2 rotatable about an axis of rotation 12 or rotated in a certain angle of rotation WT. In order to detect the positions P 1, 2, the actual angle of rotation WT of the shaft 10 and thus of the magnet 6 should be determined.
  • the mag net 6 is part of a sensor arrangement 8.
  • FIG. 2 again shows the sensor arrangement 8 from FIG. 1 in the direction of the arrow II from FIG. 1; 1 shows the viewing direction I from FIG. 2.
  • the sensor arrangement 8 is used to determine a (determined) rotation angle WE, which would correspond to the actual rotation angle WT in an ideal sensor arrangement.
  • the sensor arrangement 8 has a base support 14. Magnet 6 and shaft 10 are rotatable about the axis of rotation 12 relative to the base support 14. The magnet 6 is magnetized diametrically to the axis of rotation 12 (indicated by north pole N and south pole S). The magnet 6 is here a permanent magnet and generates a magnetic measuring field 16 which is coupled to the magnet 6 in a rotationally fixed manner and is illustrated in the figures only by a few field lines.
  • the sensor arrangement 8 also contains a sensor 18, here a 3D Hall sensor, which is mounted in a stationary manner with respect to the base support 14. The sensor 18 is set up to detect a radial component KR and a tangential component KT of the measuring field 16.
  • the corresponding radial direction and tangential direction relate to the axis of rotation 12.
  • the sensor 18 is set up to determine the angle of rotation WE from the detected radial component KR and the detected tangential component KT using an arc tangent (atan) function.
  • the sensor 18 is placed at a radial distance AR from the axis of rotation 12. For this purpose, it is mounted on a printed circuit board 20 in addition to, that is to say at a distance from, the axis of rotation 12 and is electrically contacted. A surface 22 of the circuit board 20 is aligned parallel and tan potential to the axis of rotation 12.
  • the sensor 18 is an SMD component.
  • the sensor 18 is also opposite a transverse to the axis of rotation 12 central plane 24, here plane of symmetry, of the magnet 6 is arranged by an axial distance AA ver.
  • FIG. 3 shows a profile 26 of the determined angle of rotation WE (in degrees), plotted against the actual angle of rotation WT (in degrees).
  • the axial distance AA and the radial distance AR are selected so that the course 26 of the mean rotation angle WE over the actual rotation angle WT is optimized with regard to its linearity.
  • a quadratic error measure of a respective error F i.e. a deviation (indicated by a line) of the angle of rotation WE perpendicular to the course of the angle of rotation WT for realistic possible axial distances AA and radial distances AR minimized.
  • the optimization in question also takes into account the respective modulation of the sensor 18 by the measuring field 16 with possible axial distances AA and radial distances AR and magnetic parameters.
  • AA axial distance
  • AR radial distance
  • magnetic parameters corresponding parameters
  • the sensor arrangement 8 also includes an adjustable compensation arrangement 28 in order to completely compensate for the residual error FR between the angle of rotation WE and the actual angle of rotation WT.
  • an adjustable compensation arrangement 28 in order to completely compensate for the residual error FR between the angle of rotation WE and the actual angle of rotation WT.
  • the course of the rotation angle WE is therefore further optimized and mapped to respective values of a corrected rotation angle WK.
  • the course of the angle of rotation WK over the angle of rotation WT is also shown in FIG. 3 and is identical to it and is therefore ideal.
  • initial values for the distances AA, AR and the magnetic parameters are selected first and these are varied with the above-mentioned iteration process with the aid of a respective FEM analysis of a respective selection, which corresponds to the dashed curves in FIG. 3 with un leads to different error measures.
  • the solid curve 26 results with residual error FR.
  • the compensation arrangement 28 is set only after optimization of the sensor arrangement 8 and its installation in the selector lever arrangement 2 as part of an EOL setting in the manufacture or manufacture of the selector lever arrangement 2.
  • FIG. 5 shows, in dashed lines, alternative courses 26 of the determined rotation angle WE (in degrees, sensor signal), plotted against the actual (mechanical) rotation angle WT (extended, in degrees).
  • the axial arrangement in the sensor arrangement 8 levels AA and radial distances AR (variation indicated by arrows) varies.
  • the curves shown in FIG. 5 correspond to some of the sensor positions indicated by dots. If the position of the sensor 18 below the magnet 6 is selected correctly (course 26 with minimal deviation), the signal error compared to adjacent positions (other courses 26) can be minimized so much that the raw (unlinearized) sensor signal has an error F to almost zero.
  • the sensor positions are 0.5 mm apart and the error F for the optimized position 30 is ⁇ 4 ° compared to the ideal sensor line (WT).
  • WT ideal sensor line

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

L'invention concerne un système de détection (8) permettant de déterminer un angle de rotation (WE) d'un aimant (6) autour d'un axe de rotation (12), ledit sytème de détection comprenant un capteur (18) permettant de détecter une composante radiale (KR) et une composante tangentielle (KT) du champ magnétique (16) de l'aimant (6) et de déterminer l'angle de rotation (WE) sur la base d'une fonction atan. Le capteur (18) est monté à une distance radiale (AR) de l'axe de rotation (12) sur une carte de circuits imprimés (20) parallèle à l'axe de rotation (12) et est décalé d'un écart axial (AA) par rapport à l'aimant (6). Selon un procédé de conception concernant le système de détection (8), un écart axial (AA) initial et un écart radial (RA) initial sont sélectionnés, la courbe (26) est déterminée, et l'écart axial (AA) et/ou l'écart axial (RA) sont optimisés de manière itérative. Dans un ensemble levier de changement de vitesses (2) pour un véhicule, un levier de changement de vitesses (4) est accouplé solidaire en déplacement à l'aimant (6) du système de détection (8). Selon un procédé de fabrication concernant l'ensemble levier de changement de vitesses (2), le système de détection (8) est optimisé, monté avec l'ensemble levier de changement de vitesses (2), et un système de compensation (28) est réglé dans le cadre d'un réglage de bout de ligne.
EP19816227.3A 2018-11-30 2019-11-27 Système de détection d'angle de rotation à capteur 3d et axe de rotation parallèle à cartes de circuits imprimés Withdrawn EP3887765A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018220665.1A DE102018220665A1 (de) 2018-11-30 2018-11-30 Drehwinkel-Erfassung mit 3-D-Sensor und Leiterplatten-paralleler Drehachse
PCT/EP2019/082743 WO2020109384A1 (fr) 2018-11-30 2019-11-27 Système de détection d'angle de rotation à capteur 3d et axe de rotation parallèle à cartes de circuits imprimés

Publications (1)

Publication Number Publication Date
EP3887765A1 true EP3887765A1 (fr) 2021-10-06

Family

ID=68806719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19816227.3A Withdrawn EP3887765A1 (fr) 2018-11-30 2019-11-27 Système de détection d'angle de rotation à capteur 3d et axe de rotation parallèle à cartes de circuits imprimés

Country Status (5)

Country Link
US (1) US20220099428A1 (fr)
EP (1) EP3887765A1 (fr)
CN (1) CN113167599A (fr)
DE (1) DE102018220665A1 (fr)
WO (1) WO2020109384A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022124958A1 (de) 2022-09-28 2024-03-28 Max Baermann Gesellschaft mit beschränkter Haftung Verfahren zur Erfassung einer relativen Drehwinkellage sowie magnetische Drehwinkelgebereinrichtung

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1016852B1 (fr) * 1998-12-31 2008-02-27 Pacific Scientific Company Capteur de position
JP4470577B2 (ja) * 2004-05-14 2010-06-02 株式会社デンソー 回転角度検出装置
WO2009127237A1 (fr) * 2008-04-18 2009-10-22 Festo Ag & Co. Kg Ensemble capteur permettant de détecter l'angle de rotation d'un système pivotant autour d'un axe de rotation
FR2953805B1 (fr) * 2009-12-15 2011-12-30 Ratier Figeac Soc Dispositif de pilotage d'un aeronef a elements magneto-sensibles de detection de position angulaire montes hors axe
DE102012202404B4 (de) * 2012-02-16 2018-04-05 Infineon Technologies Ag Drehwinkelsensor zur absoluten Drehwinkelbestimmung auch bei mehrfachen Umdrehungen
TWI485972B (zh) * 2013-01-31 2015-05-21 Rhymebus Corp 馬達轉子角度偵測模組及其方法
US9671214B2 (en) * 2013-07-17 2017-06-06 Infineon Technologies Ag Discrete magnetic angle sensor device, a magnetic angle sensor arrangement, a method for generating an angle signal and a method for providing a sensor signal
US9354084B2 (en) * 2013-11-19 2016-05-31 Infineon Technologies Ag Off-axis magnetic field angle sensors
DE102014005247B4 (de) * 2014-04-10 2020-12-10 Tdk-Micronas Gmbh Sensorvorrichtung
DE102014116115A1 (de) * 2014-11-05 2016-05-12 Pierburg Gmbh Magnet-basiertes Messsystem zur Erfassung einer Bewegung und/oder Winkelposition eines Bauelements
JP2018151159A (ja) * 2015-08-04 2018-09-27 ヤマハ発動機株式会社 相対位置検出装置、アクセルポジションセンサ及び車両
US10168184B2 (en) * 2015-08-12 2019-01-01 Infineon Technologies Ag Angle sensing in an off-axis configuration
DE102017202833A1 (de) * 2017-02-22 2018-08-23 Zf Friedrichshafen Ag Vorrichtung und Verfahren zum Bestimmen einer Position eines Betätigungselements für ein Getriebe eines Fahrzeugs und System zum Bewirken von Schaltvorgängen eines Getriebes eines Fahrzeugs

Also Published As

Publication number Publication date
WO2020109384A1 (fr) 2020-06-04
CN113167599A (zh) 2021-07-23
DE102018220665A1 (de) 2020-06-18
US20220099428A1 (en) 2022-03-31

Similar Documents

Publication Publication Date Title
EP2225142B1 (fr) Arrangement de detection de l'angle de direction a mesure absolue
DE102010001308B4 (de) Hubsensor
DE69520511T2 (de) Capteur de deplacement et capteur de couple
DE112010005022B4 (de) Relativwinkel-Detektionsvorrichtung, Drehwinkel-Detektionsvorrichtung, Relativwinkel-Detektionsverfahren und Drehwinkel-Detektionsverfahren
DE102007022196B4 (de) Drehwinkel-Detektorgerät, welches eine Messung von Graden einer Drehung einer Welle ermöglicht, die 360° überschreitet
DE102008020153A1 (de) Winkelerfassungsvorrichtung
DE102004015893A1 (de) Magnetfeldsensorabgleichungsverfahren, Magnetfeldsensorabgleichungsvorrichtung und Magnetfeldsensor
DE19817356A1 (de) Winkelgeber und Verfahren zur Winkelbestimmung
DE4300028A1 (fr)
DE102018113378A1 (de) Belastungsmessverfahren, Belastungsmessvorrichtung und Belastungsmessanordnung sowie Antriebssteuerung und E-Bike
EP2887072A1 (fr) Boîte de vitesses détectant la vitesse pour un véhicule automobile
DE212013000100U1 (de) Vorrichtung zur Erfassung einer Winkellage
EP2773923B1 (fr) Capteur d'angle à base de courants de foucault
DE102008048506B4 (de) Verfahren und Vorrichtung zum Kalibrieren eines Sensors, Verfahren und System zum Bestimmen einer Einstellposition einer Schaltwelle eines Getriebes und Sensor zum Erfassen einer Einstellposition einer Schaltwelle eines Getriebes
EP3887765A1 (fr) Système de détection d'angle de rotation à capteur 3d et axe de rotation parallèle à cartes de circuits imprimés
DE69734635T2 (de) Drehpositionserkennungsvorrichtung für eine Brennkraftmaschine
DE102016208644A1 (de) Kipptoleranter Linearwegsensor
EP2169356A1 (fr) Dispositif de détermination de la position axiale du rotor d'un moteur linéaire
DE102007054801B4 (de) Messverfahren, Sensoranordnung und Verfahren zum Aufbau eines Messsystems
EP2392899A2 (fr) Encodeur de roue dentée
DE102016204016A1 (de) Kipptoleranter Wegsensor
DE102020003055A1 (de) Verfahren zur Ermittlung der Belastung einer Antriebswelle
EP3907473A1 (fr) Dispositif de mesure d'angle pour une mesure simple tour et multitour
DE102006021289B4 (de) Verfahren und Vorrichtung zur Bestimmung einer Winkelteilung
DE102018221211A1 (de) Drehzahl- und/oder Drehwinkelerfassungseinheit und Arbeitsvorrichtung

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210602

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20220118