DE102013219761B3 - Arrangement and method for measuring a torque on a machine element and roll stabilizer - Google Patents

Abstract

The present invention relates to an arrangement for measuring a torque (MT) on a machine element (01) extending in an axis (03) using the inverse-magnetostrictive effect. The invention further relates to a roll stabilizer and a method for measuring a torque (MT), wherein the torque (MT) acts on a machine element (01) extending in an axis (03). The machine element (01) is also exposed to a perpendicular to the axis (03) aligned transverse force (FQ) and / or a perpendicular to the axis extending local temperature change (Tgrad). The machine element (01) has a permanent magnetization (04), which extends circumferentially around the axis (03). The arrangement comprises at least one magnetic field sensor (13, 14, 16, 17, 18, 19) which is designed to measure a component extending in the axis (03) of a magnetic field caused by the permanent magnetization (04) and by the torque (MT) is. The at least one magnetic field sensor (13, 14, 16, 17, 18, 19) is arranged in a plane which is spanned by the axis (03) and by the direction of the transverse force (FQ) and / or the temperature change (Tgrad) ,

Description

The present invention relates to an arrangement for measuring a torque on a machine element extending in an axis using the inverse magnetostrictive effect. Furthermore, the invention relates to a method for measuring a torque, wherein the torque acts on a machine element extending in an axis. Another object of the invention is a roll stabilizer in which the torsional stressing the roll stabilizer torque is measurable.

The DE 698 38 904 T2 shows a torque sensor with circular magnetization in a magnetoelastically active region on a shaft exposed to a torque. For example, using a Hall effect sensor, the magnetic field is measured near the magnetoelastically active area.

From the DE 600 08 543 T2 For example, a transducer element is known which is intended for use in a torque or force sensor. The transducer element is integral with a shaft of magnetizable material and has magnetization oriented in an anal direction.

The DE 600 07 641 T2 shows a transducer element which is provided for a torque or force sensor transducer. In this transducer element, magnetizations are formed in a radially inner region and in a radially outer region.

From the DE 603 09 678 T2 For example, a method for detecting a torque in a shaft is known in which magnetic fields of alternating polarity are generated, which are measured with a sensor arrangement.

The 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 extend at an angle to the power transmission direction and have opposite magnetization polarities.

The DE 699 36 138 T2 shows a magnetic force sensor in which a magnetized material is subjected to a bending moment, wherein by means of a sensor arrangement, the external magnetic field of the magnetized material can be determined.

The WO 2011/085400 A1 shows a magnetoelastic force sensor, with which mechanical loads of an element can be measured. The element has a tangentially circulating magnetization and is loaded with a bending moment. On a middle level is a magnetic field sensor.

From the DE 10 2011 053 277 A1 is a stabilizer with an integrated actuator is known which has an electromechanical drive and is used to compensate for vehicle movements application. The stabilizer transmits a drive torque to two output shafts which are each connected to an associated stabilizer part of the stabilizer, wherein for detecting the torsion between one of the output shafts and the associated stabilizer part, a first measuring arrangement in the form of a torque sensor for detecting the torsion between said output shaft and the associated Stabilizer half is arranged or the stabilizer has a working based on the inverse magnetostriction second measuring arrangement. The second measuring arrangement comprises a torsion-stressed area of the stabilizer, the area being provided with a magnetization and a coil arrangement for detecting the change in the magnetization of the torsionally stressed area being integrated in a radially spaced-apart element of the stabilizer.

The DE 10 2009 028 386 A1 teaches a device for varying a roll angle of a vehicle body in the region of a vehicle axle. In this device, a torsionsmomentabhängige rotational movement between two axially spaced apart and non-rotatably interconnected sections of the stabilizer device can be determined. There is a differential rotational angle measurement, from which indirectly the torsional moment is determined.

The US 2009/0021244 A1 shows a sensor which is generally applicable to a magnetizable object. The magnetizable object is to be magnetized with a magnetizing device. Circulating magnetizations are generated, for example, by introducing corresponding electrical signals via programming wires.

The DE 10 2009 025 928 A1 shows a magnetic encoder system of a shaft in which an electrically conductive element in the vicinity of the shaft is arranged with a gap between the element and the shaft. A pair of electrodes disposed near the ends of the electrically conductive member are electrically connected to the shaft. A coding source is electrically connected to the first end of the electrically conductive element and sends unipolar current pulses to the electrodes and to the electrically conductive element to produce coded regions in the wave.

The DE 103 53 731 A1 teaches a magnetoelastic torque sensor assembly for measuring the torsional force of a shaft such. B. a motor vehicle steering column. To measure the torsional force, the shaft is provided with a first electric tape with a magnetic field in the direction and with a second electrical tape with a magnetic field in the opposite direction.

The DE 10 2011 078 821 A1 and the DE 10 2011 078 819 A1 show a shared roll stabilizer to avoid rolling movements of a vehicle body relative to the roadway. The roll stabilizer has a magnetically coded connection part with which a torsional moment acting in the roll stabilizer is converted into a magnetic signal. A torsion of the connection part generates a magnetic signal, which depends on the applied torsional moment. The connecting part takes over both the transmission of the acting torsional moment between the connectable actuator and the connected stabilizer part as well as the generation of a magnetic signal, which is dependent on the applied torsional moment. The measurement is performed with a sensor that includes a primary sensor and a secondary sensor. The primary sensor is a region of the shaft that is magnetically coded. The secondary sensor is an array of magnetic field sensors placed in close proximity to the magnetically encoded region of the shaft.

The object of the present invention is based on the DE 10 2011 078 821 A1 It is to reduce the undesirable influence of vertically acting shear forces and locally in the vertical direction extending temperature changes on the accuracy in the measurement of torques, for example, a torsional load on a torsional stressing torque, using the inverse magnetostrictive effect.

The object is achieved by an arrangement according to the appended claim 1 and by a roll stabilizer according to the attached independent claim 8. The object is further achieved by a method according to the attached independent claim 9.

The arrangement according to the invention is used to measure a torque which acts on a machine element extending in an axis. The torque acts on the machine element, which leads to mechanical stresses and the machine element usually deforms slightly. The torque to be measured is aligned in the axis of the machine element, i. H. the 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, so that the torque is formed by a torsional moment. The machine element is preferably elastically deformable by the torque oriented in the axle.

The machine element is furthermore exposed to a transverse force aligned perpendicular to the axis and / or to a local temperature change extending perpendicular to the axis. The transverse force may be an undesirable force due to a bending moment acting on the machine element in addition to the torque. In any case, the transverse force should not influence the measurement of the torque. The locally extending temperature change causes the machine element to have different temperatures at different points of its extent. There is thus a temperature gradient which is oriented perpendicular to the axis. The vertical alignment of the lateral force or the temperature change to the axis is given when at least one component of the transverse force or the temperature change is aligned perpendicular to the axis, which is preferably an essential component of the lateral force or the change in temperature. Particularly preferably, the transverse force or the temperature change is aligned exclusively perpendicular to the axis. The direction of the lateral force and / or the temperature change is preferably arranged vertically.

The machine element has a permanent magnetization. The permanent magnetization extends tangentially around the axis. It is thus an extensive permanent magnetization. The permanent magnetization is preferably closed around the axis. The field lines of the magnetic field of the permanent magnetization run within the permanent magnetization along circles which are arranged concentrically and perpendicular to the axis.

The machine element preferably forms an integral part of the arrangement.

The arrangement further comprises at least one magnetic field sensor, which is arranged opposite the machine element. The at least one magnetic field sensor is arranged in particular near the machine element, for example next to the machine element or in a cavity of the machine element. The at least one magnetic field sensor is used to determine a magnetic field and is designed to measure a component extending in the axis of a magnetic field emerging from the machine element, which is caused on the one hand by the permanent magnetization and on the other hand by the torque. With the help of at least one Magnetic field sensor, it is possible to measure the magnetic field, which occurs because of the inverse magnetostrictive effect due to the permanent magnetization and due to the torque acting on the machine element. Although the component of the magnetic field emerging from the machine element extends axially, but exits radially out of the machine element at the exit point and enters the machine element radially at the point of entry, this component can also indirectly at the entry or exit point in the radial direction be determined. The magnetic field sensor or the magnetic field sensors are preferably designed to measure only the component extending in the axis of the magnetic field caused by the permanent magnetization and by the torque. In this case, no other components of this magnetic field can be measured by the or the magnetic field sensors.

The magnetic field sensor or the magnetic field sensors are arranged in a plane which is spanned by the axis and by the direction of the transverse force and / or the temperature change. At least the magnetic field sensor is at least so close to this plane in technical terms that a magnetic field caused by the permanent magnetization and by the transverse force and / or the locally extending temperature change does not influence the measurement value of the at least one magnetic field sensor for measuring the torque. The plane spanned by the axis and by the direction of the lateral force and / or the locally extending temperature change in which the at least one magnetic field sensor is located is preferably arranged vertically.

A particular advantage of the arrangement according to the invention is that the unwanted effects of the transverse force and the temperature change are avoided solely by the arrangement of the magnetic field sensors.

The permanent magnetization may comprise a plurality of components which are each aligned circumferentially around the axis. Preferably, the permanent magnetization is exclusively circumferentially aligned around the axis. Consequently, the permanent magnetization preferably has no other directional component, for example lying radially to the axis or lying in the axis. Insofar as the permanent magnetization comprises a plurality of components, the components are preferably also aligned exclusively circumferentially around the axis.

In preferred embodiments of the arrangement according to the invention, the permanent magnetization is formed in axial sections, between which the polarity of the permanent magnetization changes. Within the axial sections, the polarity of the permanent magnetization preferably does not change. Between the axial portions of the permanent magnetization are preferably unmagnetized axial sections.

The axial sections of the permanent magnetization preferably have a same axial length. Preferably, two to ten of the axial sections are formed. Particularly preferably, three of the axial sections of the permanent magnetization are formed.

The one or more magnetic field sensors are preferably arranged at a distance from the axis.

The arrangement preferably comprises at least two of the magnetic field sensors. The magnetic field sensors are preferably paired, with the magnetic field sensors of each of the pairs being located opposite each other with respect to the axis. In this case, the two magnetic field sensors of the respective pair are at the same distance from the axis. The arrangement may also comprise exactly one of these pairs.

The one or more magnetic field sensors are preferably arranged in a plane aligned perpendicular to the axis, in which the permanent magnetization is arranged. Insofar as the permanent magnetization is formed in axial sections, it is preferable for each of the axial sections to be one of the magnetic field sensors; particularly preferably associated with one of the pairs of magnetic field sensors. The pairs of the magnetic field sensors lie in each case in a plane oriented perpendicular to the axis, in which also one of the axial sections of the permanent magnetization is arranged.

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 permanent magnetization of alternating polarity with possibly existing unmagnetized intermediate sections. In any case, the machine element may extend far beyond the permanent magnetization in the axis.

The component having the permanent magnetization is at least fixed connected to the machine element or with a main component of the machine element, wherein the permanent magnetization is exposed to the mechanical stresses occurring at 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, for example, are fastened on 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. Preferably, not only a portion, but the machine element is designed as such magnetoelastic. In this case, the machine element consists of a magnetostrictive material.

The one or more magnetic field sensors are preferably stationary and spaced from the machine element. While 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 shape 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. Particularly preferably, the machine element has the shape of a straight circular cylinder, wherein the circular cylinder is arranged coaxially to the axis. In particular embodiments, the prism or the cylinder is conical.

The machine element is preferably formed by a shaft or by a flange. The shaft or the flange can be designed for loads due to different forces and torques. Particularly preferably, the machine element is a measuring flange of a roll stabilization. In this case, the temperature change is caused, for example, by splash water, which strikes the measuring flange from below and cools it.

The machine element 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 magnetometers. In principle, other sensor types can also be used insofar as they are suitable for measuring the magnetic fields produced by the inverse-magnetostrictive effect.

The one or more magnetic field sensors are preferably arranged together on a circuit board, to which the magnetic field sensors are soldered, for example. The planar board is preferably located in or near the plane which is spanned by the axis and by the direction of the lateral force and / or the locally extending temperature change. The board is preferably arranged vertically.

The roll stabilizer according to the invention is a split roll stabilizer of a motor vehicle. The division is given by the fact that the roll stabilizer comprises two stabilizer parts, which are preferably formed by torsion bar springs. Between the stabilizer parts, an actuator for applying the stabilizer parts can be received with a torque. The stabilizer parts are consequently designed such that an actuator can be fixed in a rotationally fixed manner between them in order to be able to transmit torque from the actuator to the respective stabilizer part, wherein the torque stresses the respective stabilizer part in torsion. Preferably, the actuator is already taken between the stabilizer parts and rotatably connected to the stabilizer parts. The roll stabilizer further comprises the inventive arrangement for measuring a torque in the embodiment described above, in which the machine element is formed by a measuring flange of the roll stabilization. The roll stabilizer may also include two of these arrangements. The one or the two measuring flanges are adapted to be arranged rotationally fixed between the respective stabilizer part and the actuator, so that the respective measuring flange transmits the torque generated by the actuator and as well as the respective stabilizer part is subjected to torsion. The one stabilizer part or the two stabilizer parts are each formed with the torque transmitting measuring flange for rotationally fixed connection to the actuator. Preferably, this is a stabilizer part or the two stabilizer parts are each already connected in rotation with the torque transmitting measuring flange to the actuator.

The method according to the invention is used to measure a torque. The torque acts on an axis extending in one Machine element. The torque to be measured is aligned in the axis of the machine element, ie, the torque has an axis of rotation which coincides with the axis of the machine element or at least parallel thereto. This torque leads in particular to a torsion of the machine element, so that the torque is formed by a torsional moment. The machine element is furthermore exposed to a transverse force aligned perpendicular to the axis and / or to a temperature change extending perpendicular to the axis. The transverse force may be an undesirable force due to a bending moment acting on the machine element in addition to the torque. In any case, the transverse force should not influence the measurement of the torque. The locally extending temperature change causes the machine element to have different temperatures at different points of its extent. There is thus a temperature gradient which is oriented perpendicular to the axis. The vertical orientation of the transverse force or the locally extending temperature change to the axis is given when at least one component of the transverse force or the temperature change is aligned perpendicular to the axis, which is preferably an essential component of the transverse force or the change in temperature. The machine element has a permanent magnetization. The permanent magnetization extends tangentially around the axis. The field lines of the magnetic field of the permanent magnetization run within the permanent magnetization along circles which are arranged concentrically and perpendicular to the axis.

The torque is determined according to the invention by measuring at least one vectorial component extending in the axis of a magnetic field emerging from the machine element and caused by the permanent magnetization and by the torque due to the inverse magnetostrictive effect. This measurement takes place within a plane which is spanned by the axis and by the direction of the lateral force and / or the locally extending temperature change.

The method according to the invention is preferably applied to the arrangement according to the invention and its preferred embodiments.

Further advantages, details and developments of the invention will become apparent from the following description of preferred embodiments, with reference to the drawing. Show it:

1 a preferred embodiment of an inventive arrangement in two views;

2 a preferred embodiment of a roll stabilizer according to the invention; and

3 : a detail of in 2 shown roll stabilizer.

1 shows a preferred embodiment of the inventive arrangement for measuring a torque in two views. The left part of the 1 shows a cross-sectional view, while the right part of 1 a side view of the arrangement according to the invention shows.

The arrangement initially comprises a machine element in the form of a flange 01 which is attached to a basic body 02 is attached. The flange 01 has the shape of a hollow circular cylinder. The flange 01 extends in one axis 03 , which is also the middle axis of the hollow cylindrical shape of the flange 01 forms. The flange 01 consists of a magnetoelastic material, which has the magnetostrictive effect.

In an axial section of the flange 01 is a permanent magnetization 04 formed, which tangentially about the axis 03 extends around. The permanent magnetization 04 is in the direction of the axis 03 not completely along the flange 01 but only in axial sections 06 . 07 . 08 formed, wherein the polarity of the permanent magnetization 04 between the axial sections 06 . 07 . 08 each changes. The changing palarity of permanent magnetization 04 is by arrows 09 . 11 . 12 symbolizes.

In the cavity of the hollow cylindrical flange 01 There are six magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 which as couples 13 . 14 ; 16 . 17 ; 18 . 19 are arranged. Each one of the pairs of magnetic field sensors 13 . 14 ; 16 . 17 ; 18 . 19 is one of the axial sections 06 . 07 . 08 the permanent magnetization 04 across from.

The six magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 are designed to measure a magnetic field whose direction in the direction of the axis 03 is arranged. The permanent magnetization 04 causes an axis 03 extending magnetic field when a mechanical stress on the flange 01 has led to the inverse magnetostrictive effect. This mechanical load is, in particular, a torque M _T about the axis 03 which the flange 01 claimed to torsion. Consequently, with the six magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 that on the flange 01 acting torque M _T measurable.

The machine element 01 is further exposed to a transverse force F _Q , which does not affect the measurement of the torque M with the six magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 should affect. The lateral force F _Q is perpendicular to the axis 03 aligned and acts in the embodiment shown from above.

The machine element 01 is further exposed to a locally extending temperature change T _degrees which causes a temperature gradient which is upwardly oriented in the embodiment shown. This temperature change can be effected, for example, by a cooling liquid which strikes the machine element from below. The localized temperature change T _grad should not be based on the measurement of the torque M _T with the six magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 impact.

All magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 are in a plane passing through the axis 03 and is spanned by the direction of the lateral force F _Q and the temperature change T _grad . In the embodiment shown, since the lateral force F _Q and the temperature change T _{grad are} vertically aligned, the magnetic field sensors are also located 13 . 14 . 16 . 17 . 18 . 19 together in a vertical plane. For this reason, the lateral force F _Q and the temperature change T _grad do not affect the measurement of the torque M _T with the six magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 out.

The magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 are formed by coils and are together on a flat board 21 attached. The board 21 lies together with the magnetic field sensors 13 . 14 . 16 . 17 . 18 . 19 almost in the plane, passing through the axis 03 and is spanned by the direction of the lateral force F _Q and the temperature change T _grad . The board 21 is vertically aligned in the embodiment shown.

2 shows a preferred embodiment of a split roll stabilizer according to the invention with a connected actuator 31 , The actuator 31 is effective between two each as a torsion bar 32 trained stabilizer parts 33 arranged. Both stabilizer parts 33 are each about a stabilizer bearing 34 rotatably mounted on a vehicle body, not shown here. The actuator 31 may comprise a motor with a connected gear, wherein an actuator housing to the one stabilizer part 33 and an output shaft to the other stabilizer part 33 can be connected. Under actuation of the actuator 31 become the connected stabilizer parts 33 claimed to torsion.

3 shows a detail of in 2 shown roll stabilizer. An arrangement 36 for non-contact measurement of the actuator torque comprises a magnetoelastic material 37 and a magnetic field sensor 38 , The magnetoelastic material 37 has the magnetostrictive effect and a circumferential permanent magnetization. The actuator torque is that in the stabilizer parts 33 acting torsional moment. The stabilizer part 33 is at his the actuator 31 (shown in 2 ) facing end with a connection part 39 provided to the actuator 31 (shown in 2 ) is connected to transmit the torsional moment. The connection part 39 is in the embodiment as a flange 41 educated. The flange 41 on the one hand rotatably against the stabilizer part 33 and on the other hand rotationally fixed to the actuator 31 (shown in 2 ) connected. The flange 41 can be connected to the actuator 31 screwed with screws; the flange 41 can also be material, friction or non-positive with the actuator 31 get connected. In the embodiment, the flange 41 formed hollow, wherein the annular member formed at its end stabilizer part 33 in an annular heel 42 of the flange 41 intervenes. The flange 41 and the stabilizer part 33 are cohesively connected. The flange 41 has a sleeve-shaped section 43 on, at whose from the annular shoulder 42 facing away from the axial end in one piece a radial board 44 is formed. The radial board 44 is at his the actuator 31 (shown in 2 ) facing end face with a toothing 46 provided in an on the actuator 31 (shown in 2 ) provided counter-toothing engages positively. The flange 41 is about unshown screws with the actuator 31 (shown in 2 ) screwed, with the screws through in the radial board 44 provided through holes are performed. The flange 41 consists of the magnetoelastic material 37 which has the magnetostrictive effect. The magnetoelastic material 37 transfers the full torsional moment of the roll stabilizer. The magnetic field sensor 38 is in 3 alternatively inside and outside the hollow flange 41 arranged. The magnetic field sensor 38 measures the by torsion of the magnetoelastic material 37 caused change in the magnetic properties of the flange 41 , By the arrangement of the magnetic field sensor 38 inside the hollow flange 41 are a space-saving arrangement and effective protection of the magnetic field sensor 38 reached.

LIST OF REFERENCE NUMBERS

01

flange

02

body

03

axis

04

permanent magnetization

05

06

axial portion of the permanent magnetization

07

axial portion of the permanent magnetization

08

axial portion of the permanent magnetization

09

arrow

10

11

arrow

12

arrow

13

magnetic field sensor

14

magnetic field sensor

15

16

magnetic field sensor

17

magnetic field sensor

18

magnetic field sensor

19

magnetic field sensor

20

21

circuit board

30

31

actuator

32

Torsion bar

33

stabilizer part

34

stabilizer suspension

35

36

Arrangement for measuring the actuator torque

37

magnetoelastic material

38

magnetic field sensor

39

connector

40

41

flange

42

annular heel

43

sleeve-shaped section

44

radial board

45

46

gearing

Claims (9)

Arrangement ( 36 ) for measuring a torque (M _T ) at one in an axis ( 03 ) extending machine element ( 01 ; 41 ), - wherein the torque to be measured (M _T ) in the axis ( 03 ) of the machine element ( 01 ; 41 ) is aligned; - where the machine element ( 01 ; 41 ) further one perpendicular to the axis ( 03 ) oriented transverse force (F _Q ) and / or perpendicular to the axis ( 03 ) is subjected to extending temperature change (T _grad ), wherein the direction of the lateral force (F _Q ) and / or the temperature change (T _grad ) is arranged vertically; - where the machine element ( 01 ; 41 ) a permanent magnetization ( 04 ), which revolve around the axis ( 03 ) extends around; - wherein the arrangement further comprises at least one magnetic field sensor ( 13 . 14 . 16 . 17 . 18 . 19 ; 38 ), which is used to measure an axis ( 03 ) extending component of a permanent magnetization ( 04 ) and by the torque (M _T ) caused magnetic field is formed; and - wherein the at least one magnetic field sensor ( 13 . 14 . 16 . 17 . 18 . 19 ; 38 ) is arranged in a plane passing through the axis ( 03 ) and by the direction of the transverse force (F _Q ) and / or the temperature change (T _grad ) is clamped. Arrangement ( 36 ) according to claim 1, characterized in that the permanent magnetization ( 04 ) in axial sections ( 06 . 07 . 08 ) between which the polarity of the permanent magnetization ( 04 ) changes. Arrangement ( 36 ) according to claim 1 or 2, characterized in that the at least one magnetic field sensor ( 13 . 14 . 16 . 17 . 18 . 19 ; 38 ) for measuring exclusively in the axis ( 03 ) extending component of the by the permanent magnetization ( 04 ) and by the torque (M _T ) caused magnetic field is formed. Arrangement ( 36 ) according to one of claims 1 to 3, characterized in that the at least one magnetic field sensor ( 13 . 14 . 16 . 17 . 18 . 19 ; 38 ) from the axis ( 03 ) is spaced. Arrangement ( 36 ) according to claim 4, characterized in that the magnetic field sensors ( 13 . 14 . 16 . 17 . 18 . 19 ) are paired with the magnetic field sensors ( 13 . 14 . 16 . 17 . 18 . 19 ) of each of the pairs ( 13 . 14 ; 16 . 17 ; 18 . 19 ) opposite and at an equal distance from the axis ( 03 ) are arranged. Arrangement ( 36 ) according to one of claims 1 to 5, characterized in that the magnetic field sensors ( 13 . 14 . 16 . 17 . 18 . 19 ) together on a board ( 21 ) are arranged, wherein the board ( 21 ) is arranged vertically. Arrangement ( 36 ) according to one of claims 1 to 6, characterized in that the machine element by a measuring flange ( 41 ) is formed a roll stabilization. Split roll stabilizer of a motor vehicle, comprising two stabilizer parts ( 33 ), between which an actuator ( 31 ) for applying the stabilizer parts ( 33 ) is receivable with a torque, wherein the roll stabilizer further comprises an arrangement ( 36 ) according to claim 7, and wherein one of the two stabilizer parts ( 33 ) with the torque transmitting measuring flange ( 41 ) for connection to the actuator ( 31 ) is trained. Method for measuring a torque (M _T ), wherein the torque (M _T ) is applied to an axis (M _T ) 03 ) extending machine element ( 01 ; 41 ) and in the axis ( 03 ), wherein the machine element ( 01 ; 41 ) further one perpendicular to the axis ( 03 ) oriented transverse force (F _Q ) and / or perpendicular to the axis ( 03 ) is subjected to extending temperature change (T _grad ), wherein the direction of the lateral force (F _Q ) and / or the temperature change (T _grad ) is arranged vertically, and wherein the machine element ( 01 ; 41 ) a permanent magnetization ( 04 ), which revolve around the axis ( 03 ), wherein the torque (M _T ) is measured by measuring an axis ( 03 ) extending component of a permanent magnetization ( 04 ) and magnetic field caused by the torque (M _T ) is determined in a plane passing through the axis ( 03 ) and by the direction of the transverse force (F _Q ) and / or the temperature change (T _grad ) is clamped.

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