EP3008438A1 - Agencements et procédé permettant de mesurer une force ou un couple sur un élément de machine - Google Patents

Agencements et procédé permettant de mesurer une force ou un couple sur un élément de machine

Info

Publication number
EP3008438A1
EP3008438A1 EP14733980.8A EP14733980A EP3008438A1 EP 3008438 A1 EP3008438 A1 EP 3008438A1 EP 14733980 A EP14733980 A EP 14733980A EP 3008438 A1 EP3008438 A1 EP 3008438A1
Authority
EP
European Patent Office
Prior art keywords
magnetic field
axis
force
permanent magnetization
machine element
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Withdrawn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
EP14733980.8A
Other languages
German (de)
English (en)
Inventor
Stephan Neuschaefer-Rube
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP3008438A1 publication Critical patent/EP3008438A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
    • G01L1/122—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using permanent magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
    • G01L1/125—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using magnetostrictive means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/102—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving magnetostrictive means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
    • G01L3/101—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/104—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving magnetic or electromagnetic means involving permanent magnets

Definitions

  • the present invention relates to arrangements for measuring a force and / or a moment on a machine element extending in an axis using the in-magnetostrictive effect.
  • the invention further relates to a method for measuring a force and / or a moment, wherein the force or force the moment acts on a machine element extending in an axis
  • DE 698 38 904 T2 shows a torque sensor with circular magnetization in a magnetoelastically active region on a shaft exposed to a torque. Using a Hall effect sensor, the magnetic field is measured near the magnetoelastically active area
  • transducer element which is intended for use in a torque or force sensor.
  • the transducer element is integrally formed in a shaft of agnetisierbarem material and has an aligned in an axial direction magnetization.
  • DE 600 07 6 1 T2 shows a transducer element which is provided for a torque or force sensor converter.
  • magnetizations are formed in a radially inner region and in a radially outer region,
  • DE 601 05 794 T2 shows a force-sensitive transducer element with a body of magnetic material, wherein in the body at least two magnetized areas are formed, which at an angle to the force transmitting extending direction and have opposite magnetization apolarities
  • DE 699 36 138 T2 shows a magnetic force sensor, in which a magnetized material is exposed to a bending moment, wherein mithitfe a sensor arrangement, the external magnetic field of the magnetized material can be determined.
  • WO 201 1/085400 A1 shows a magnetoelastic force sensor with which mechanical loads of an element can be measured.
  • the object of the present invention is to expand the possibilities for measuring forces and moments using the inverse magnetostrictive effect.
  • the object is achieved by an arrangement according to the attached claim 1.
  • the object is further achieved by an arrangement according to the attached independent claim 5 and by methods according to the attached independent claims 9 and 10th
  • a first aspect of the invention is an arrangement for measuring a force and or moment on a machine element extending in an axis.
  • the force or the moment acts on the machine element, which leads to mechanical stresses and the machine element usually deforms slightly.
  • the machine element has a permanent magnetization.
  • the permanent magnetization is aligned in the axis, whereby the machine element and the Permanentmagnetisienjng are arranged coaxially with each other. Opposite poles of the permanent magnetization can be connected by a straight line, which is arranged parallel to the axis.
  • the arrangement further comprises at least one magnetic field sensor which is arranged opposite the machine element.
  • the MagnetfeWsensor is used to determine a magnetic field and is for measuring at least one vectorial component of the Machine element emerging magnetic field formed, which is caused on the one hand by the permanent magnetization and on the other hand by the force and / or by the moment.
  • this vectorial component is not the component of the magnetic field caused by the permanent magnetization, and by the force and / or by the moment, which are aligned in the axis or parallel to the axis of the machine element and the permanent magnetization is.
  • this vectorial component is the vectorial component of the magnetic field caused by the permanent magnetization, as well as by the force and / or by the moment, which is aligned in the axis or parallel to the axis of the machine element and the permanent magnetization is.
  • the magnetic field sensor By means of the magnetic field sensor, it is possible to measure the magnetic field which occurs due to the inverse magnetostrictive effect due to the permanent magnetization and due to the force acting on the machine element or the moment acting on the machine element.
  • the vectorial component of the machine element emerging from the machine element caused by the permanent magnetization and by the force and / or by the moment magnetic field and the arrangement of the magnetic field sensor relative to the machine element forces and or torques can be measured in certain directions.
  • the magnetic poles of the Pemnanentmagnetleiter are in the simplest case directly in the axis. Also, in the simplest case, only two magnetic poles, namely a north pole and a south pole of the permanent magnetization are formed. However, the permanent magnetization is preferably formed in circumferential sections. These portions are formed along a circumference around the axis. Preferably, the polarity of the permanent magnetization alternates between the sections such that the north pole and south pole of the permanent magnetization alternate along a circumference around the axis.
  • the permanent magnetization in individual ones of the peripheral sections may be considered as a single magnetization.
  • the circumferential portions of the permanent magnetization preferably have a same center angle with respect to the axis. Also, the circumferential portions of the permanent magnetization have a same axial length and are arranged flush with each other on the axis. Thus, the circumferential portions of the permanent magnetization preferably have a same size. Wetterhin the peripheral portions of the permanent magnetization are preferably distributed equal along the circumference around the axis
  • two to ten of the circumferential portions of the permanent magnetization are formed. More preferably, four of the circumferential portions of the permanent magnetization are formed
  • the permanent magnetization is aligned only in the axis. Consequently, the permanent magnetization has no directional component which is not in the axis or parallel to the axis. Thus, it is excluded that the permanent magnetization is arranged, for example, obliquely with respect to the axis.
  • the one magnetic field sensor or the plurality of magnetic field sensors for measuring the aligned in the tangential direction to the axis component of the caused by the permanent magnetization and by the force and / or by the moment magnetic field educated. Consequently, the one or more magnetic field sensors measure that component of the permanent magnetization as well as the force and / or magnetic field caused by the moment, which extends circumferentially around the axis.
  • the magnetic field sensors are preferred for measuring only the component oriented in the tangential direction to the axis through the permanent magnetization and / or or formed by the moment caused magnetic field In this case, by the bz the magnetic field sensors no other components of this magnetic field can be measured
  • the machine element is preferably acted upon by a torque aligned in the axis and possibly also deformable, wherein the aligned in the tangential direction to the axis component of the caused by the permanent magnetization as well as the torque MagnetfekJes is a mali of the mechanical stress caused by the torque. Consequently, with the or with the magnetic field sensors for measuring the aligned in the tangential direction to the axis component of the caused by the permanent magnetization and by the torque magnetic field, a measurement of the torque is possible.
  • the axis-aligned torque has an axis of rotation which coincides with or at least parallel to the axis of the machine element. This torque leads in particular to a torsion of the machine element.
  • the machine element is preferably elastically deformable by the torque oriented in the axle.
  • the magnetic field sensors are preferably present, which are arranged distributed equally at an equal distance from the axis around the axis. Consequently, the four magnetic field sensors in pairs have a center angle of 90 ° with respect to the axis to each other.
  • the magnetic field sensors preferably lie together in a plane which is aligned perpendicular to the axis.
  • four of the circumferential portions of the permanent magnetization are equally distributed about the axis.
  • the four circumferential portions of the permanent magnetization and the four magnetic field sensors stand In this case, in each case two opposite of the four agnetfekJsensoren preferably additively sixteengeschattet signal side, whereby the influence of other torques and forces, in particular lateral forces on the machine element and the resulting magnetic field in the measurement by the magnetic field sensors is eliminated. As a result, the measurement is limited to the axis-oriented torque.
  • the machine element is alternatively preferably acted upon by a perpendicular to the axis aligned transverse force and possibly deformable, wherein the aligned in the tangential direction to the axis component of the by the permanent magnetization and by
  • the transverse force caused magnetic field is a measure of the shear force caused by the shear force. Consequently, with the magnetic field sensor or the magnetic field sensors, the determination of the component of the magnetic field oriented in the tangential direction to the axis enables the transverse force acting on the machine tool to be measured.
  • the machine element is elastically deformable by the transverse force aligned perpendicular to the axis. The transverse force can lead, for example, to a bending of the machine element.
  • two of the magnetic field sensors are preferably present, which are equally distributed at the same distance from the axis about the axis. Consequently, the two MagnetfekJsensoren have a center angle of 180 ° with respect to the axis to each other and are arranged opposite to the axis. They are preferably located together in a plane which is arranged perpendicular to the axis.
  • the two magnetic field sensors are preferably interconnected subtracting on the signal side.
  • four of the circumferential sections of the permanent magnetization are preferably formed, which are arranged distributed equally around the axis
  • the one magnetic field sensor bz are the a plurality of MagnetfekJsensoren for measuring the aligned in a radial direction to the axis component of the permanent magnetization as well as by de force and / or caused by the moment magnetic field.
  • the component of the magnetic field which is exposed in the radial direction to the axis is arranged perpendicular to the axis and intersects the axis.
  • the magnetic field sensors or measuring elements are preferred for measuring only the component oriented in the radial direction relative to the axis of the magnet as well as by the force and / or force Moment caused magnetic field formed
  • the Maschineneleme t is preferably acted upon by an aligned torque in the axis and possibly deformable, wherein the aligned in the radial direction to the axis component of the permanent magnetization and by the torque caused magnetic field is a measure of the torque caused by the mechanical stress. Consequently, with the magnetic field sensor bz with the magnetic field sensors, the torque acting on the machine element can be measured.
  • the machine element is elastically deformable by the torque oriented in the axle.
  • a third group of preferred embodiments of the arrangement according to the first subject of the invention is the one magnetic field sensor or the plurality of magnetic field sensors for measuring the aligned in the axis or parallel to the axis component of the permanent magnetization and by the force and / or by the moment formed magnetic field.
  • the magnetic field sensor (s) are / are preferably designed to measure only the component of the component of the magnetic field caused by the permanent magnetization and by the force and / or by the moment that is aligned in the axial direction relative to the axis.
  • the machine element is preferably characterized by a traction force aligned in the axis or by an axis-aligned one Compressive force acted upon and possibly deformable, wherein the aligned in the axial direction component of the caused by the permanent magnetization and by the torque magnetic field is a measure of the tensile force or compressive force caused by the mechanical stress. Consequently, with the magnetic field sensor or with the magnetic field sensors acting on the machine element tensile force or compressive force can be measured.
  • the machine element is elastically deformable by the traction force or pressure force aligned in the axis
  • a second object of the present invention is a further arrangement for measuring a force and / or moment on a machine element extending in an axis.
  • the poles of magnetization namely one or more pairs of each of a north pole and a south pole, respectively lie on a radius which is perpendicular to the axis and proceeding from the axis.
  • the arrangement furthermore comprises at least one magnetic field sensor, which is designed to measure at least one vector-like component of a magnetic element emerging from the machine element, caused by the permanent magnetization and by the force and / or by the moment, this vectorial component of the magnet as well as the force and / or by the moment hosted magnetic field is preferably not radially aligned with the axis
  • the magnetic field due to the inverse magnetostrictive effect due to the permanent magnetization and due to the force acting on the machine element force or of the machine r > e learning waving moment occurs, to measure
  • the permanent magnetization may comprise a plurality of components which are each aligned radially to the axis.
  • the permanent magnetization is aligned exclusively radially to the axis. Consequently, the permanent magnetization preferably has no other directional component, for example in the direction of the axis or tangentially to the axis. Therefore, the permanent magnetism is preferably not oriented obliquely to a radius Insofar as the permanent magnetization comprises a plurality of components, the components are also preferably aligned exclusively radially with respect to the axis.
  • the permanent magnetism is formed in axial sections between which the polarity of the permanent magnetization changes.
  • the permanent magnetization may be formed completely circumferentially or in circumferential sections.
  • the polarity of the permanent magnetization preferably does not change. There may be unmagnetized axial sections between the axial sections of the permanent magnet.
  • the axial sections of the permanent magnetization preferably have a same axial length.
  • two to ten of the axial sections are formed.
  • three of the axial sections of the permanent magnetization are formed.
  • the arrangement according to the second aspect of the invention preferably comprises two of the magnetic field sensors which are evenly distributed at an equal distance from the axis about the axis.
  • the two magnetic field sensing furnaces have a center angle of 180 * with respect to the axis and are opposite one another arranged relative to the axis.
  • the two magnetic field sensors are arranged together in a plane which is aligned perpendicular to the axis.
  • the one magnetic field sensor or the plurality of magnetic field sensors for measuring at least one aligned in the tangential direction to the axis component of the permanent magnetization and by the force and / or by the moment formed magnetic field. It is a component which surrounds the axis at least partially circumferentially. Particularly preferred are the or the magnetic field sensors for measuring exclusively in the tangential direction to the axis aligned component of the magnetic field caused by the permanent magnetization as well as by the force and / or by the moment. Consequently, with the magnetic field sensors exclusively a component of the magnetic field can be detected, which results in a mechanical stress of the machine element due to the inverse magnetostrictive effect.
  • the machine element is preferably acted upon by a transverse to the axis aligned torque and possibly deformable, wherein the aligned in the tangential direction to the axis component caused by the Permanentmagnetisienjng and by the torque Magnetic field em measure of the torque caused by the mechanical stress is.
  • the torque oriented transversely to the axis is, in particular, a bending moment, which leads to bending of the machine element.
  • the machine element is preferably elastically deformable by the transversely aligned to the axis transverse torque.
  • the torque oriented transversely to the axis has an axis of rotation which preferably intersects the axis.
  • the magnetic field sensor or the magnetic field sensors for measuring at least one aligned in the axis component of the permanent magnetization and by the force and / or caused by the moment magnetic field.
  • the or the magnetic field sensors are particularly preferably designed for measuring exclusively the component oriented in the axis of the magnetic field caused by the permanent magnetization and by the force and / or by the moment.
  • the machine element is preferably acted upon by a transverse force aligned perpendicular to the axis and possibly deformable, wherein the axis-aligned component of the magnetic field caused by the permanent magnetization and by the lateral force is a measure of the mechanical stress caused by the lateral force.
  • the transverse force leads in particular to a bending of the machine element.
  • the machine element is preferably elastically deformable by the transverse force aligned perpendicular to the axis.
  • the permanent magnetization is preferably formed in an axial magnetization section of the machine element.
  • This axial magnetization section may comprise the axial sections of the magnetization of alternating polarity.
  • the machine element may extend far beyond the permanent magnetization in the axis. If, for example, a torque arranged in the axis is to be measured, a short axial magnetization section is sufficient to be able to determine the magnetic field that occurs.
  • the component having the permanent magnetization is connected at least fixedly to the machine element or to a main component of the machine element, the permanent magnetization being exposed to the mechanical stresses occurring on the machine element together with the machine element.
  • the permanent magnetization is preferably formed integrally with the machine element or with a main component of the machine element. In any case, these are not additional permanent magnets, which are fastened to the outside of the machine element and are not exposed to the mechanical stresses occurring on the machine element.
  • the permanent magnetization is preferably formed in a magnetoelastic section of the machine element. In the magnetoelastic section of the machine element, the machine element preferably consists of a magnetostrictive material. Not only is preferred Section, but the machine element designed as such magnetoelastic In this case, the machine element consists of a magnetostrictive material.
  • one or more magnetic field sensors are preferably stationary and spaced from the machine element arranged While the force or the torque can lead to movements or deformations of the machine element, the magnetic field sensors do not change their stationary position.
  • the machine element preferably has the form of a prism or a cylinder, wherein the prism or the cylinder is arranged coaxially to the axis.
  • the prism or the cylinder is preferably straight.
  • the machine element has the shape of a straight circular cylinder, wherein the circular cylinder is arranged coaxially to the axis.
  • these circumferential portions are formed by cylinder arc sections.
  • the prism or the cylinder is conical, in particular in the third group of preferred embodiments of the arrangement according to the first subject of the invention.
  • the machine element is preferably formed by a world or by a flange.
  • the shaft or the flange can be designed for loads due to different forces and torques.
  • the Maschineneternent preferably has a cavity through which the axis extends at least in sections. Consequently, the cavity encloses at least a portion of the axis.
  • the cavity preferably extends in the axis.
  • the cavity is preferably cylindrical, wherein the cylindrical shape is arranged coaxially to the axis.
  • the one or more magnetic field sensors are preferably arranged in the cavity.
  • the one or more magnetic field sensors are alternatively preferably arranged outside the cavity.
  • the one or more magnetic field sensors are preferably formed by Hall sensors, coils or fluxgate agnetometers. Basically, other sensor types can also be used insofar as they are suitable for measuring the magnetic fields produced by the inverse-magnetostrictive effect.
  • a third object of the invention is a method for measuring a force and / or a moment.
  • the force or the moment acts on a machine element extending in an axis.
  • the machine element has a permanent magnetization which is aligned in the axis. Consequently, the permanent magnetization has one or more pairs of magnetic poles, namely a north pole and a south pole, whose connecting line m is arranged along the axis or parallel to the axis.
  • the force bz of the moment is determined by at least one vectorial component of an emerging from the machine element, is measured by the permanent magnetization and by the force and / or by the moment caused by the inverse magnetostrictive effect magnetic field.
  • this vectorial component of the magnetic field is not aligned in the axis.
  • the vectorial component of the magnetic field caused by the permanent magnetization as well as by the force and / or by the moment is aligned in the tangential direction to the axis or in the radial direction to the axis.
  • the inventive method according to the third object of the invention corresponds to the arrangement according to the first object of the invention. Consequently, the method according to the third aspect of the invention is preferably applied to arrangements described in accordance with the first subject of the invention and its preferred embodiments.
  • the fourth object is a method for measuring a force and / or moment.
  • the force or moment acts on an axis extending machine element.
  • the machine element has a permanent magnetization.
  • the permanent magnetization has one or more pairs of magnetic poles, namely a north pole and a south pole, whose connecting degrees each forms a radius that intersects the axis.
  • the force or the moment is thereby determined by measuring at least one vectorial component of a magnetic field emerging from the machine element and caused by the permanent magnetization and by the force and / or by the moment due to the inverse magnetostrictive effect.
  • This vektonelle component is preferably not aligned radially to the axis.
  • this component of the magnetic field caused by the permanent magnetization as well as by the force and / or by the moment is aligned in a tangential direction to the axis or in the axis.
  • the method according to the fourth aspect of the invention corresponds to the arrangement according to the second subject of the invention. Consequently, the method according to the fourth aspect of the invention is preferably applied to arrangements formed according to the second subject of the invention and its preferred embodiments.
  • Fig. 1 an inventive arrangement with axially aligned
  • Magnetization for measuring a torque 4 shows an arrangement according to the invention with radially oriented magnetization for measuring a bending moment;
  • Fig. 5 an inventive arrangement with radially aligned
  • the figures show the arrangements according to the invention in two views.
  • the upper parts of the figures each comprise a plan view, while the lower parts of the figures each comprise a cross-sectional view of the respective arrangement according to the invention
  • the arrangement initially comprises a machine element in the form of a flange 01, which is fastened to a base body 02.
  • the flange 01 has the shape of a hollow circular cylinder.
  • the flange 01 extends in an axis 03, which also forms the central axis of the hollow cylindrical shape of the flange 01.
  • the flange 01 is made of a magnetoelastic material which has the magneto-trictive effect.
  • a permanent magnetization 04 is formed, which extends in the same direction as the axis 03.
  • the permanent magnetization 04 is not formed completely circumferentially around the flange 01, but only in peripheral portions 06, 07, 08, 09 , wherein the polarity of the permanent magnetization 04 between the circumferential sections 06, 07, 08, 09 respectively changes.
  • the changing polarity of the permanent magnetization 04 is symbolized by arrows 1 1, 12, 3, 14.
  • each of the four magnetic field sensors 16, 17, 18, 19 faces one of the four circumferential sections 06, 07, 08, 09 of the permanent magnetization 04.
  • the four magnetic field sensors 16, 17, 18, 19 are each formed by a measuring coil, for example Magnetic field sensors 18, 17, 18, 19 are designed to measure a magnetic field whose direction is arranged tangentially to the axis 03. Consequently, with the four magnetic field sensors 16, 17, 18. 19, a magnetic field formed circumferentially around the axis 03 can be measured.
  • the permanent magnetization 04 causes a magnetic field aligned tangentially to the axis 03 when a mechanical stress on the flange 01 has led to the inverse-magnetostrictive effect.
  • This mechanical load is, in particular, a torque about the axis 03 which torsion the flange 01 claimed. Consequently, with the four magnetic field sensors 16, 17, 18, 19, a torque acting on the flange 01 can be measured about the axis 03.
  • FIG. 2 shows a further preferred embodiment of the arrangement according to the invention with axially aligned permanent magnetization 0. This embodiment is designed to measure a transverse force.
  • This embodiment of the arrangement according to the invention again comprises the flange 01 shown in FIG. 1, which is designed in the same way.
  • the embodiment shown in FIG. 2 comprises only two of the shown magnetic field sensors 16, 18 which, however, are designed and arranged in the same way as the magnetic field sensors 16, 18 shown in FIG.
  • the two magnetic field sensors 16, 18 allow the measurement of a transverse force, which acts on the flange 01 and perpendicular to the axis 03 and according to the arrangement of the two magnetic field sensors 18 18 is aligned. Should further lateral forces be measurable, this embodiment can also be used with four of the Be equipped magnetic field sensors, which are arranged gleichvereitt about the axis 03
  • FIG. 3 shows a further preferred embodiment of the arrangement according to the invention with an axially aligned permanent magnetization 04.
  • the embodiment shown in FIG. 3 is provided for measuring a torque and, in turn, comprises the flange 01, which is similar to the flange 01 shown in FIG.
  • the embodiment shown in FIG. 3 again comprises the four magnetic field sensors 16, 17, 18, 19, which, however, in contrast to the embodiment shown in FIG. 1, are designed to measure a magnetic field which extends radially to the axis 03.
  • the four MagnetfekJsensoren 16, 17, 18, 19 with an offset of 45 * about the axis 03 with respect to the four circumferential portions 06, 07, 08, 09 of the permanent magnetization 04 are arranged.
  • a torque about the axis 03 can be measured, which acts on the flange 01 and stresses it on torsion.
  • Fig. 4 shows a mittenre embodiment of the inventive arrangement.
  • This embodiment in turn has the flange 01. which initially equals the flange 01 shown in FIG. 1, but differs in the design of the permanent magnetization 04 from the flange 01 shown in FIG. 1.
  • the permanent magnetization 04 is radially aligned so that it faces the axis
  • the permanent magnetization 04 comprises three axial sections 21, 22, 23, between which the polarity of the permanent magnetization 04 changes.
  • FIG. 5 shows a further preferred embodiment of the arrangement according to the invention, which, like the embodiment shown in FIG. 4, has a radially oriented permanent magnetization 04.
  • This Aue arrangement turn comprises the flange 01, which is similar to the flange 01 shown in FIG. 4, including the permanent magnetization 04.
  • the magnetic field sensors 16, 18 shown in FIG. 1 are designed to measure a magnetic field which extends in the direction of the axis 03. Such a magnetic field arises due to the inverse-magnetostrictive effect when acting on the flange 01 a transverse force perpendicular to the axis 03

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention concerne des agencements permettant de mesurer une force et/ou un couple sur un élément de machine (01) s'étendant sur un axe (03), en utilisant l'effet magnétostrictif inverse. L'invention concerne par ailleurs un procédé permettant de mesurer une force et/ou un couple, la force ou le couple agissant sur un élément de machine (01) s'étendant sur un axe (03). Selon un premier agencement de l'invention, l'élément de machine (01) présente une magnétisation permanente (04) qui est orientée sur l'axe (03). L'agencement comprend par ailleurs au moins un capteur de champ magnétique (16, 17, 18, 19) qui est conçu pour mesurer au moins une composante vectorielle d'un champ magnétique engendré par la magnétisation permanente (04) ainsi que par la force et/ou le couple.
EP14733980.8A 2013-06-13 2014-05-13 Agencements et procédé permettant de mesurer une force ou un couple sur un élément de machine Withdrawn EP3008438A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013211000.6A DE102013211000A1 (de) 2013-06-13 2013-06-13 Anordnungen und Verfahren zum Messen einer Kraft oder eines Momentes an einem Maschinenelement
PCT/DE2014/200210 WO2014198268A1 (fr) 2013-06-13 2014-05-13 Agencements et procédé permettant de mesurer une force ou un couple sur un élément de machine

Publications (1)

Publication Number Publication Date
EP3008438A1 true EP3008438A1 (fr) 2016-04-20

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Application Number Title Priority Date Filing Date
EP14733980.8A Withdrawn EP3008438A1 (fr) 2013-06-13 2014-05-13 Agencements et procédé permettant de mesurer une force ou un couple sur un élément de machine

Country Status (5)

Country Link
US (1) US20160146679A1 (fr)
EP (1) EP3008438A1 (fr)
CN (1) CN105308424B (fr)
DE (1) DE102013211000A1 (fr)
WO (1) WO2014198268A1 (fr)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
DE102014219336B3 (de) * 2014-09-24 2016-01-21 Schaeffler Technologies AG & Co. KG Verfahren und Anordnung zur Messung einer Kraft oder eines Momentes mit mehreren Magnetfeldsensoren
DE102015200268B3 (de) * 2015-01-12 2016-06-09 Schaeffler Technologies AG & Co. KG Anordnung zur Messung einer Kraft oder eines Momentes mit einem Magnetfeldsensor und mit einem Magnetfeldleitelement
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CN105308424B (zh) 2018-12-14
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WO2014198268A1 (fr) 2014-12-18
US20160146679A1 (en) 2016-05-26

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