WO2015039655A1 - Composant, dispositif et procédé de mesure d'une tension matérielle par magnétostriction - Google Patents

Composant, dispositif et procédé de mesure d'une tension matérielle par magnétostriction Download PDF

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Publication number
WO2015039655A1
WO2015039655A1 PCT/DE2014/200345 DE2014200345W WO2015039655A1 WO 2015039655 A1 WO2015039655 A1 WO 2015039655A1 DE 2014200345 W DE2014200345 W DE 2014200345W WO 2015039655 A1 WO2015039655 A1 WO 2015039655A1
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WO
WIPO (PCT)
Prior art keywords
component
measuring zone
sensor
measuring
magnetization
Prior art date
Application number
PCT/DE2014/200345
Other languages
German (de)
English (en)
Inventor
Jan Matysik
Original Assignee
Schaeffler Technologies AG & 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 & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2015039655A1 publication Critical patent/WO2015039655A1/fr

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Classifications

    • 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
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0009—Force sensors associated with a bearing
    • G01L5/0023—Force sensors associated with a bearing by using magnetic sensors

Definitions

  • the invention relates to the field of material tension measurement, in particular torque measurement by means of the inverse magneto-tretic effect.
  • EP 2 216 702 A1 shows a sensor with a rotatable element for emitting a magnetic field by means of a section made of a ferromagnetic material. magnetostrictive polycrystalline material The magnetic field change caused by a torsional change is detected by a sensor.
  • EP 0609463 A1 shows a torque transducer with a shaft called a number in the range of a sensor. "Knurl grooves having * and is coated with a magnetostrictive layer, whereby the sensitivity of the sensor to be improved.
  • This invention was based on the object of providing a larger frame for a sensor of a sensor based on the principle of magnetostriction.
  • the object is achieved in particular by a component for a device for detecting a material tension introduced into the component, wherein the component has a measuring zone which has a magnetization and is set up, due to an inverse magnetostrictive effect of the magnetization dependent on the material tension and by means of a Sensors to detect detectable magnetic field, wherein the measuring zone is formed by a component region with a comparison to other component areas consistently either higher or lower mechanical stability.
  • the object is achieved in particular by a method for detecting a material tension introduced into a component, comprising the steps:
  • the measuring zone is formed by a machining of a component region, and wherein the mechanical stability of the component in the region of the measuring zone is continuously increased or reduced in comparison to other component regions as a result of the machining.
  • the effect of the material stress is thus concentrated to the measurement zone (at a measurement zone with lower mechanical stability) or kept away from the measurement zone (at a measurement zone with higher mechanical stability).
  • an even higher sensitivity of the sensor can be achieved in this way (lower mechanical stability) or even lower sensitivity (higher mechanical stability).
  • the sensitivity is the ratio of the magnetic field change to the change in measured material tension.
  • the advantage is clear: even smaller material stresses can be measured due to a higher sensitivity and the signal-to-noise ratio is improved. But even for a lower sensitivity is an advantageous application, for example, given in, for example, to use a thin shaft as a component. Thin waves show greater material tensions compared to a shaft with a larger diameter, eg with the same torsion. This results in a high sensitivity for small Malerialhoven, which could be quite undesirable in amount (eg due to overdrive), if the sensor for certain large material stresses (eg torsions in the upper area) should be sensitive
  • the signal strength of the component is, inter alia, proportional to the amount of material stress and this is, inter alia, proportional to the mechanical stability in the measurement zone.
  • the locally different mechanical stability allows a good possibility of Sensorperfonmanceoptimierung
  • the mechanical stability is preferably designed so that the component at a material tension the desired signal strength available
  • the adjustment of the mechanical stability is preferably made locally. It is thus possible to adapt or optimize the signal strength of the component to a sensor and the installation environment.
  • the advantage and advantage of this invention is thus the possibility of integration of such a sensor into an existing product or, for example, the reduction of the signal-to-noise ratio.
  • the ßauteil (also referred to as a primary sensor, since it converts the Materlaistance into a detectable, proportional or at least dependent magnetic field) is preferably a shaft which may be provided for a rotatable mounting or for a fixed clamping.
  • the material tension is preferably a force acting on the component or acting on the component torque. Preferably, this leads to an expansion, compression. Shearing, torsion and / or bending of the component.
  • the measuring zone is preferably an area present on the surface and / or inner surface of the component in which the magnetic field, which is dependent on the material tension and which is to be detected, is generated mainly, preferably exclusively.
  • the measuring zone can preferably be regarded as a locally limited measuring zone with adapted wall thickness / diameter.
  • the wall thickness or the radius of the measuring zone can be designed according to the required signal strength of the primary sensor.
  • the measuring zone preferably extends over at least one circumference (eg circular or spiral) In a simple way, a measurement can take place both when the component is stationary and when it is rotating.
  • the measuring zone preferably has an asymmetrical shape (eg free form, rhombus) or a diagonal guide (eg helical), particularly preferably it has a round shape (circular geometry), eg a rectangular or square geometry with rounded corners.
  • the magnetization is preferably permanent. It is preferably present exclusively in the measuring zone or in existing measuring zones. Particularly preferred is a self-contained magnetization. For example, a magnetization in which at least a part of the field lines, for example exclusively via the material of the component, preferably on the material of the component within the measuring zone z circularly closes with such an energetically favorable magnetization solves the life of the magnetization increase.
  • the magnetization is particularly preferably a material layer adhering to the surface of the measurement zone, preferably mixed with alloying elements.
  • Ni has a positive effect on the stability of the magnetization over the lifetime and temperature of the magnetization.
  • the magnetization in the measuring zone extends into the material of the component to a certain depth, particularly preferably extends through the entire material of the component in the region of the measuring zone.
  • magnetization into the component, e.g. into the body of the wave, preferably by means of the action of an external magnetizing magnetic field.
  • white regions are aligned.
  • the surface which the magnetization should have is previously coated with a material which is easily magnetisable or premagnetized.
  • the generation of a dependent of the material tension and detectable by a sensor magnetic field is preferably due to the inverse magnetostrictive effect.
  • the magnetic field generated by the magnetization undergoes a measurable change due to a (already minimal) material deformation, which results according to the invention from a material stress, or a magnetic field leaving the component is first generated by the material deformation.
  • This measurable change or the strength and / or orientation of the newly generated magnetic field is proportional or at least dependent on the deformation of the material.
  • a sensor also denoted as a secondary sensor, since it only indirectly moves the change in material change in a magnetic field change in an electrical signal, such as Hall sensor
  • a detection of the emerging from the component, preferably due to the material stress exiting magnetic field for detection, a sensor is preferably mounted in the smallest possible distance from the measuring zone
  • Mechanical stability is preferably the resistance of the component against a force or moment effect, in particular the rigidity understood the components.
  • Particularly preferred mechanical stability in the context of this invention is equated with the radius of a solid shaft provided as a component or with the material or wall thickness or the product or the sum of material or wall thickness and radius.
  • mechanical stability is preferably equated alternatively with a certain Matertal of the component
  • a component region with a consistently either higher or lower mechanical stability is preferably a component region
  • a higher or lower mechanical stability is achieved by a material and / or geometry change.
  • regions preferably points, with higher mechanical stability (preferably, for example, larger radius), as well as regions, preferably points, exist with lower mechanical stability (preferably, for example, smaller radius).
  • no areas, preferably no dots, remain which consist of the same material and / or have the same geometry as areas of the component outside a measuring zone.
  • the boundary of the measuring zone is preferably given by points on the surface of the component on which The geometry and / or the material of the component starting from other areas of the component begins to change.
  • more than 50%, preferably more than 75%, more preferably more than 90%, of the measuring zone surface is constant geometry. eg a smaller (otherwise larger) radius over this area than for other component areas.
  • the geometry of the measuring zone surface is constant except in a transition region of the measuring zone.
  • the mechanical stability is preferably selectively increased or reduced in order to carry out an adaptation of the sensitivity of a sensor.
  • An adaptation of the sensitivity to the requirement of a sensor system is preferably carried out, in that the mechanical stability of the component in the region of the measuring zone is exaggerated or reduced
  • the local adjustment of the mechanical stability of the wall thickness / diameter of the primary sensor carrier by forming a measuring zone according to the invention is effected, for example, by increasing (or reducing) the wall thickness or a diameter of the primary sensor carrier (for example a hollow shaft or a solid cylinder) in the localized region of the magnetization.
  • the adaptation of the wall thickness or a diameter is preferably carried out over the entire circumference or over part of the circumference
  • a geometry is preferably a diameter or radius of a component designed as a shaft or a wall thickness of a component designed as a hollow body.
  • Other component regions are preferably regions that are not formed as a measurement zone. Preferred are e.g. several measuring zones present and the component has in each measuring zone on each equal high / low mechanical stability.
  • the measuring zone has an transitional region to the remaining component regions with a continuous course of the mechanical stability of the component.
  • a continuous transition is created by processing the component region provided as the measuring zone.
  • Continuous means preferably that "there are no sudden changes.
  • a non-erratic wall thickness transition is provided as the transition area.
  • a continuous transition with continuous distribution of the mechanical stability of the component, a continuous transition (eg the contour) from the surface of remaining component regions to the surface of the component region formed as a measuring zone.
  • the material thickness does not change abruptly in a continuous transition, but continuously.
  • This is preferably a GO-continuous transition, wherein any surface transition angles at edges (the smaller of the angles enclosed by the surfaces converging at the edge) greater than 90 s are preferably larger than 120 °.
  • the transition has only rounded transition corners or edges.
  • the measuring zone is bordered by transition regions with a continuous transition all around.
  • the magnetization preferably also extends over the transition region. This makes the primary sensor signal possible both in the constant zone of the measuring zone and in the transition zone / edge region. Particularly preferably, the magnetization does not extend to the transition region of the measuring zone. This can be advantageous if a particularly high-quality signal is required, in particular if sufficient surface is available for forming the measuring zone, so that the magnetization in the transition region can be dispensed with.
  • the component region through which the measuring zone is formed is. formed by a material awakening point.
  • a material weakness is formed by the processing of the component region provided as the measuring zone.
  • a material-weak parts is in particular a component region with a reduced wall thickness or a reduced radius or diameter.
  • a material weakness is introduced by machining (eg drilling, milling) in the component.
  • the component region through which the measuring zone is formed is formed by a material reinforcement point.
  • a material amplification point is formed by processing the component region provided as the measuring zone.
  • a material reinforcement point is in particular a component region with an increased wall thickness or an increased radius or diameter.
  • a material weak point is machined out of the component by means of machining of the remaining component regions, z, B of all component regions not formed as a measuring zone, or constructed, for example, by means of joining (for example welding, soldering)
  • the measuring zone extends around less than a full, preferably less than half, circumference around the component.
  • a corresponding measuring zone is formed by the machining.
  • the otherwise possibly unwanted weakening (or otherwise also amplification) of the component is limited to a region of the circumference, in particular in the case of a measuring zone designed as a material weakness.
  • the measurement zone preferably less than 180 extends along each possible peripheral line of the component at most over an angle range of less than 360 ". *.
  • a circumferential line preferably has a common end and starting-point and passes around a through the center of the component extending axis along the surface of the component
  • a Angular range is preferably the area of the surface which is enclosed by an angle spanned on the axle.
  • a further component according to the invention has a further measuring zone with the magnetization or a further magnetization spaced apart from the measuring zone and, in the region of the further measuring zone, exhibits a consistently higher or lower mechanical stability in comparison with other component regions is formed by processing a corresponding additional measuring zone.
  • the signal-to-noise ratio can be further improved.
  • the further measuring zone preferably has an identical geometry to the first measuring zone. For example, inaccuracies can be detected.
  • the geometries are different, ie as different as possible, for example, in one wave a measuring zone with mainly radial and one with mainly axial course exists. As a result, individual material voltage direction components are better measurable.
  • one measuring zone is formed by a component region having a higher mechanical stability and the further measuring zone is formed by a component region having a lower mechanical stability.
  • the two measuring zones are preferably spaced from one another by a region which is not formed as a measuring zone.
  • different measuring zones are present, which are formed by component regions with mutually different mechanical stabilities and / or shapes or progressions, the different mechanical stabilities being higher and higher lower than other components.
  • At least one measuring zone is preferably formed by a component region which has the same mechanical stability as outer component regions.
  • a first measuring zone is formed by a component region with a low mechanical stability compared to other component regions, another measuring zone by a component region with likewise low mechanical stability, which however is higher than the mechanical stability of the component in the region of the first measuring zone.
  • a sensitivity for two different material voltage ranges is customizable.
  • z B measuring zones can be provided with different gradients and / or also measuring zones, which are formed by component areas with a higher or the same mechanical stability compared to other component areas.
  • the magnetization preferably extends over both or all measurement zones, particularly preferably each measurement zone has its own magnetization. Particularly preferably, the two or at least two magnetizations have different magnetization orientations.
  • the component preferably has more than two measuring zones.
  • z, B is three, four, five or preferably 6, e.g. for improved detection of material tension components in six degrees of freedom.
  • existing measuring zones are arranged radially and / or axially distributed over the circumference
  • the object is achieved in particular by a device for detecting a material tension introduced into a component, the device having the component according to the invention and at least one sensor exclusively assigned to the measuring zone.
  • the magnetic field is detected by means of a sensor which is assigned exclusively to the measuring zone.
  • the magnetic field change produced by the component according to the invention is advantageously detected by means of the sensor. No or only minimal stray fields of a region are detected, which is not designed as a measuring zone or which has a different mechanical stability. The magnetic field detected by the associated sensor therefore originates in a possibly homogeneous measuring zone.
  • the senor is assigned exclusively to a single measuring zone at least for the time of the measurement.
  • Z B is set up to carry out a measurement or an evaluation of the measurement only for the time in which the measuring zone passes by the sensor, or its evaluation and / or control device.
  • the sensor preferably has a sensor element which is set up to detect a magnetic field strength (change), e.g. A Hall sensor
  • a sensor element which is set up to detect a magnetic field strength (change), e.g.
  • a Hall sensor Existing sensors are preferably arranged in direct surroundings relative to the component, in particular the measuring zone. Particularly preferably, they are arranged opposite a material weak point and protrude into the component, eg they protrude into a shaft within the outer diameter.
  • a sensor is preferably assigned by being directed to only one measuring zone.
  • the (preferred center of the) sensor (s) has a smaller distance to the associated measuring zone than to any other existing measuring zone.
  • the center of the sensor or of the component containing it agrees with the center or a center line of the measuring zone.
  • more than 50% overlap. preferably more than 75%, particularly preferably more than 90% of the projection of the (preferably the measuring zone facing) surface of the sensor or the component containing it with the surface of the measuring zone, at least in one dimension
  • a further device according to the invention has the component according to the invention with a further measuring zone spaced apart from the measuring zone with the magnetization or a further magnetization.
  • the component in the region of the further measuring zone has a consistently higher or lower mechanical stability compared to other component regions
  • the device has at least one sensor assigned exclusively to the measuring zone and at least one sensor assigned exclusively to the further measuring zone.
  • the component has more than two measuring zones, wherein in each case at least one sensor is assigned exclusively to a measuring zone.
  • a sensor is associated by means of an algorithm with a rotating shaft and a plurality of spaced-apart, radially distributed measuring zones offset in time each a measuring zone, preferably always that measuring zone, which passes through the sensor, for example. a temporal evaluation of the sensor signal takes place at time intervals, wherein an interval contains the measurement signal which was recorded in the period in which the corresponding measurement zone is located or was located substantially opposite the sensor or passed or passed through.
  • a controller is arranged to execute such an algorithm.
  • FIG. 1 shows a component according to the invention with an exemplary profile of the mechanical stability.
  • FIG. 2 shows a component according to the invention with a measuring zone formed as a material weak point, with a transition region with a continuous course of the mechanical stability of the component, FIG.
  • Flg. 3 a component as in FIG. 2, however, with a measuring zone formed as a material reinforcement point.
  • FIG. 4 shows a perspective view of a component designed as a shaft according to the invention with a circumferential measuring zone formed as a material weakness
  • FIG. 5 shows a perspective view of a component according to the invention as in FIG. 4 together with a detailed view of the measuring zone, but the measuring zone extends by less than a quarter of the circumference *.
  • FIG. 6 shows a sectional view of the measuring zone from FIG. 5 in two variants
  • FIG. 7 shows a device according to the invention with a sensor assigned exclusively to one measuring zone
  • Fig. 1 shows an inventive component 1 with an exemplary, purely illustrative Vertauf the mechanical Stabiiitat, which is illustrated for two dimensions by means of diagrams, with a lower mechanical stability in only one dimension according to the invention is already sufficient and therefore the diagram of the Y-coordinate dashed is shown.
  • the component 1 has a component region designed as a measuring zone 10 with a lower mechanical stability S in comparison to the remaining component regions. In the measuring zone 10, the magnetization 11 is present.
  • the mechanical stability S in the measuring zone 10 is consistently lower than that of the remaining component regions.
  • a component 1 For detecting a material tension, first a component 1 is produced, wherein a measuring zone 11 is formed by eg continuous machining of material and by introducing a magnetization 11 into the measuring zone 11th In this Werse is given a higher sensitivity of the component 1 in the measuring zone and a homogeneous response of the magnetization to a material tension
  • FIG. 2 shows an inventive component 1 with a measuring zone 10 formed as a material weakness, which has a transition region 12 with a continuous course of the mechanical stability of the component 1.
  • the material thickness of the measuring zone 10 is consistently lower than outside the measuring zone 10.
  • the transition regions 12 have rounded edges and edge radii.
  • the surface transition angle 13 is less than 60 °. Within the transition areas 12, the material disturbance is constant.
  • FIG. 3 shows a component 1 as in FIG. 2, however, with a measuring zone 10 formed as a material reinforcing point.
  • the center line of the measuring zone 10 is, as previously shown in FIG. 2, indicated by dot-dash lines. This results in the same advantages as in Figure 2. However, the sensitivity is reduced instead of increased.
  • FIG. 4 shows a perspective view of a component 1 according to the invention designed as a shaft with a circumferential measuring zone 10 formed as a material weak point.
  • the measuring zone 10 is formed circumferentially around the shaft 1 and has continuous transition regions 12.
  • the magnetization 11 is also circular and circular magnetized (closed magnetization).
  • an acting on the shaft moment M is advantageously convertible into a magnetic field.
  • the torque generates a material tension, which leads to a torsion of the shaft 1.
  • the torsion is compared to the rest of the component 1 in the region of the measuring zone 10 greatest, since in this area mechanical stability is lowest. It is precisely here that the magnetic field is generated, with a higher sensitivity than if the measuring zone 10 has the same mechanical stability as the remaining areas of the shaft 1.
  • the annular magnetization is more robust against demagnetization.
  • the continuous transitions increase the signal-to-noise ratio
  • Fig. 5 shows a perspective view of a component 1 according to the invention as in Fig. 4 together with a detailed view of the measuring zone 10, however, the measuring zone 10 extends to less than a quarter of the circumference of the shaft 1
  • the measuring zone 10 has a rectangular geometry, but with rounded corners on The rectangle is preferably a square.
  • a continuous transition region 12 forms a circumferential outer boundary of the measuring zone 10.
  • Flg. 6 shows a sectional illustration of the measuring zone 10 from FIG. 5 in two variants, on the left with a material reinforcement element, in which the radius in the measuring zone is consistently higher than the remaining areas of the shaft 1, on the right with a material weakness, where the radius in the Measuring zone is consistently lower than in the other areas of the shaft 1.
  • FIG. 7 shows a device 100 according to the invention with a sensor 20 associated exclusively with a measuring zone 10.
  • the center line of the sensor housing coincides with the medium line of the measuring zone 10 (dash-dotted line).
  • the sensor 20 is arranged at a short distance directly above the measuring zone 10. In approximately 100% of the projection of the surface of the sensor housing facing the measuring surface, it overlaps with the measuring zone 10. As a result, a particularly effective detection of the magnetic field generated by the magnetization 11 is achieved. The interference of magnetic fields of other measuring zones 11 or other interference fields is thus almost eliminated.
  • the advantage of the adapted sensor sensitivity is fully savored by the sensor.
  • the wall thickness / diameter of the primary sensor carrier eg shaft hollow tube
  • the signal strength is proportional to the amount of the Matehais voltage and is proportional to the wall thickness / diameter of the primary sensor carrier
  • Strong wall / diameter and use of this locally different area as a measuring zone is a good way of sensor performance optimization.
  • the wall thickness / diameter is designed so that the primary sensor provides the desired signal strength in the event of material tension.
  • the wall thickness / diameter must be adapted locally. This makes it possible to adapt or optimize the signal strength of the primary sensor system to the secondary sensor system and its environment.
  • the benefit and advantage of this optimization is the possibility of integrating such a sensor into an existing product or, for example, reducing the signal-to-noise ratio.
  • the invention (component, device with component) is preferably used in roll stabilization in the vehicle sector.
  • the housing of the roll stabilizer preferably serves as the primary sensor or primary sensor conveyor.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un composant (1) pour un dispositif destiné à détecter une tension matérielle introduite dans le composant (1), le composant (1) présentant une zone de mesure (10) possédant une aimantation (11) et conçue pour produire, sur la base de l'effet magnétostrictif inverse de l'aimantation (11), un champ magnétique dépendant de la tension matérielle et pouvant être détecté au moyen d'un capteur, la zone de mesure (10) étant constituée par une partie du composant dont la stabilité mécanique (S) est généralement supérieure ou inférieure aux autres parties du composant. L'invention concerne également un dispositif (100) destiné à détecter une tension matérielle introduite dans un composant (1) ainsi qu'un procédé pour détecter une tension matérielle introduite dans un composant (1).
PCT/DE2014/200345 2013-09-23 2014-07-23 Composant, dispositif et procédé de mesure d'une tension matérielle par magnétostriction WO2015039655A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013219079.4A DE102013219079A1 (de) 2013-09-23 2013-09-23 Bauteil, Vorrichtung und Verfahren zur Messung einer Materialspannung mittels Magnetostriktion
DE102013219079.4 2013-09-23

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WO2015039655A1 true WO2015039655A1 (fr) 2015-03-26

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PCT/DE2014/200093 WO2015039651A1 (fr) 2013-09-23 2014-02-27 Dispositif pour mesurer une force normale ou un moment de flexion sur un élément de machine
PCT/DE2014/200345 WO2015039655A1 (fr) 2013-09-23 2014-07-23 Composant, dispositif et procédé de mesure d'une tension matérielle par magnétostriction

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EP0609463A1 (fr) 1992-08-24 1994-08-10 Kubota Corporation Procede de fabrication d'un arbre a capteur de couple du type magnetostrictif, et arbre produit selon ce procede
EP2216702A1 (fr) 1997-10-21 2010-08-11 Magna-Lastic Devices, Inc. Transducteur à couple magnétisé circulairement sans collerette et procédé pour mesurer le couple l'utilisant
DE19821381A1 (de) * 1998-05-13 1999-07-22 Bosch Gmbh Robert Vorrichtung zur Erfassung von Drehmomenten
WO2006083736A1 (fr) * 2005-02-01 2006-08-10 The Timken Company Roulement avec capteurs montes dans la cage
DE102007017705A1 (de) * 2007-04-14 2008-10-16 Schaeffler Kg Wellenanordnung mit einem Wälzlager
EP2447198A1 (fr) * 2010-10-27 2012-05-02 Abb Ab Agencement de rouleau

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