DE19816568A1 - Sensor arrangement for detecting a torque and / or an angle of rotation - Google Patents

Sensor arrangement for detecting a torque and / or an angle of rotation

Info

Publication number
DE19816568A1
DE19816568A1 DE19816568A DE19816568A DE19816568A1 DE 19816568 A1 DE19816568 A1 DE 19816568A1 DE 19816568 A DE19816568 A DE 19816568A DE 19816568 A DE19816568 A DE 19816568A DE 19816568 A1 DE19816568 A1 DE 19816568A1
Authority
DE
Germany
Prior art keywords
shaft
torsion
sensor arrangement
sensor
characterized
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.)
Ceased
Application number
DE19816568A
Other languages
German (de)
Inventor
Anton Dukart
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19816568A priority Critical patent/DE19816568A1/en
Publication of DE19816568A1 publication Critical patent/DE19816568A1/en
Ceased legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00Measuring torque, work, mechanical power, or mechanical efficiency in general
    • G01L3/02Rotary-transmission dynamometers
    • G01L3/04Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
    • G01L3/10Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electrical or magnetic means for indicating
    • G01L3/101Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electrical or magnetic means for indicating involving magnetic or electromagnetic means
    • G01L3/104Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electrical or magnetic means for indicating involving magnetic or electromagnetic means involving permanent magnets

Abstract

The invention relates to a sensor device for detecting a torque and/or an angle of rotation at the level of a shaft (1), especially for measuring torsion. Said device comprises torsion elements with ferromagnetic flux guiding pieces (3, 5) which are positioned in proximity to a magnet (4). The flux guiding pieces (3, 5) in the direction of an air gap (6) have a sawtooth-like or other periodic outline on their circumference. At least one fixed sensor (8, 9) which is sensitive to magnetic fields is able to detect the magnetic flux (10, 11) modulated by a rotation and/or torsion of the shaft (1).

Description

State of the art

The invention relates to a sensor arrangement for detection a torque and / or an angle of rotation between two essentially identical rotating parts in the Torsion measurement on shafts, according to the generic term of Main claim.

It is already a sensor arrangement from US Pat. No. 5,501,110 voltage known, in which the transmitted on an axis Torque should be recorded. The torque is off the torsion or the angular displacement of the axle ends and an elastic constant that depends on the material and the Geometry of the axis depends, determined. It is here two magnets and one each opposite the magnet gender Hall sensor on two each with the axis  rotating disks attached to the axle ends me are firmly coupled.

For example, for the detection of a steering wheel axle of a motor vehicle acting torque during the Rotation of the steering wheel must have very small changes in angle be measured in both directions of rotation of the steering wheel. When evaluating the field changes by the Magne The outgoing field is therefore extremely sensitive and temperature-stable measuring arrangement required Lich.

The torque in the rotating steering wheel spindle is one Key size for many regulation and control tasks ben in the motor vehicle. For example in vehicle systems as with electromotive power steering, the so-called Ad aptive cruise control and driving dynamics control is the Acquisition of the two sizes of the absolute steering wheel rotation kels and the torque on the steering spindle often necessary dig.

The torque can, in principle, be different, by itself seen known, species are recorded. The mechanical Tension in the twisted material is first of all direct Measured variable for the torque, the elongation or the jam chung. This mechanical tension can, for example, with Strain gauges applied in the desired direction are measured. However, it does exist at rotie waves the problem of signal transmission depending on the application with a rotary transformer or with Slip rings can be solved, but very costly is intensive and prone to failure.

Mechanical stresses can also be per se known, touch with magnetoelastic materials capture without any problems. A permanent connection technology between magnetoelastic foils and the torsion wave  is extremely difficult to manufacture. It there are various methods of measuring angle due to the angular displacement between different ends to capture the wave. This measurement angle can, for example wise through optical or eddy current based processes be recorded. The optical processes mostly have the disadvantage that they incrementally capture the angle and from the difference between the trigger times, i.e. only dyna mix, determine the angle and thus the torque.

Advantages of the invention

In a further development of a sensor arrangement for detection solution of a rotation angle and / or rotation angle offset a shaft for torsion measurement, according to the generic one Kind can according to the invention in an advantageous manner Non-contact, static measuring principle for two important Measured variables such as the incremental angle of rotation as well static and dynamic torque on a rotating Wave to be created.

According to the invention, this is solved by the fact that a torsion element from an annular ferromagnetic flux leader exists that also on the shaft ring-shaped perma located on the circumference of the shaft Magnet is attached adjacent. The other torso onselement is at the other end of a torsion shaft and has a ferromagnetic flux guide, which is the one flow guide on the shaft annular encloses with an air gap. The torsion shaft can in a simple way in a given area for ver to increase the measuring effect have, whereby a mechanically determinable spring gebil det.  

The two river guides have a towards the air gap on the perimeter sawtooth-like profile, or a son Periodic contour that essentially correspond with each other. The resulting air gap, or the magnetic flux depends on Angle of rotation here also periodically on the circumference fluctuating size.

With at least one stationary, for example at the Chas sis a vehicle mounted magnetic field sensitive Sensor, especially with a Hall element, is on fold detectable this magnetic flux, the from the radially polarized magnet to the flux guide ke and the respective air gap flowing. With egg ner torsion of the shaft, for example, shift Gears against each other and cause another flow modulation.

With the sensor arrangement according to the invention, a pre direction with a small size, the all necessary requirements for the type of the measured variables and fulfilled the quality of the measured variables. In particular, can also performed a correct torque measurement leads. The torque is universal the cross-sectional diameter of the arrangement to different Adjustable measuring ranges.

The magnetic field proportional to torque is fiction, ge tapped in the air gap without contact, which also good zero point stability is guaranteed. The Torque on the shaft creates a strong flow here modulation that is easy to evaluate. The magnetic field sensitive sensor is due to the small size with evaluation electronics can be fully integrated, which means that simple supply line and compact design is possible.

In a particularly preferred embodiment there are two Magnetically sensitive sensors diagonally opposite  arranged. The sawtooth-like, or other periodi cal contour of the respective flow guide is so out forms that on the two magnetic field sensitive Sensors when the shaft rotates the contour of the Air gap changed in phase opposition. By radially counter overlying sensors is therefore a redundant measurement possible.

When the shaft rotates through the angle α, the magnetic flux also slightly through the tooth wheel flow control modulated. Both sensors can do everything dings so attached that the α-modulation, such as previously mentioned, is in phase opposition. With this messme on the one hand, this modulation can be used in total for the torque determination are eliminated, on the other hand even redundant for the incremental rotation angle determination to be used.

Advantageously, the measurement can thereby improve beert that the sawtooth, or other pe riodic contour is designed so that on one or at two opposite points a disturbance of the periodic structure is appropriate, making an index mark for the position determination on the contour, or for the position of the shaft set.

An advantageous structure results in particular if the other torsion element in the area between the two flow guide and the attachment at the other end the torsion shaft made of a non-ferromagnetic material rial exists.

In an advantageous application, the sensor arrangement is as reluctance, torque and speed sensor on one Steering spindle used in a motor vehicle. Through the Acquisition of the two important variables, such as the steering wheel angle and the torque that acts on the steering locker,  can in many vehicle systems or vehicle safety systems like electromotive power steering, the So-called adaptive cruise control and driving dynamics control excellent data acquisition and processing be performed.

These and other features of preferred training gene of the invention go out not only from the claims the description and the drawings, the individual characteristics individually or for more ren in the form of sub-combinations in the execution form of the invention and realized in other fields his and advantageous as well as protectable execution represent representations for which protection is claimed here becomes.

drawing

An embodiment of the invention is based on the Drawing explained. Show it:

Fig. 1 is a schematic sectional view of a portion of a rotating shaft with an inventive sensor arrangement on a torsion shaft;

Fig. 2 shows a section II through the arrangement of Fig. 1;

Fig. 3 is a diagram with the curves of the output voltages of two Hall elements of the sensor arrangement at two torques and

Fig. 4 is a diagram with the resultant measurement result for the torque measurement.

Description of the embodiment

In Fig. 1, a steering shaft of a motor vehicle is shown as a rotating shaft 1 , in which a tapered loading area is designed as a torsion shaft 2 . On the shaft 1 , the components of the sensor arrangement according to the invention are attached, in particular here a first flux guide piece 3 made of ferromagnetic material and an annular, radially polarized permanent magnet 4 are arranged. Another flux guide 5 made of ferromagnetic material is attached in a ring around the first flux guide 3 with an air gap 6 . The other Flussleit piece 5 is mechanically BEFE at the other end of the torsion shaft 2 through a non-ferromagnetic spacer 7 Stigt.

Between the permanent magnet 4 and in particular at the flux guide 5 there are radially opposite a Hall sensor 8 and a Hall sensor 9 as magnetic field sensitive sensors. Magnetic flux lines 10 and 11 of the permanent magnet 4 flow through here at the first flux guide 3 , the air gap 6 , the other flux guide 5 and the respective Hall sensors 8 and 9 .

From Fig. 2, the arrangement of FIG. 1 is shown in section II, in which the matching parts are provided with the same reference numerals as in Fig. 1. Here, for example, the sawtooth-shaped circumferential contours of the flow guide pieces 3 and 5 can be clearly recognized by their jointly formed air gap 6 . When the shaft 1 rotates by the angle α, the magnetic flux in the Hall sensors 8 and 9 is modulated by the gear flow guidance which changes essentially periodically, the Hall sensors 8 and 9 being arranged such that the α- Modulation is in phase opposition. The incremental determination of the angle α can be done individually and thus redundantly with each Hall sensor 8 or 9 .

Characterized in that the other flux conductor 5 rule piece via a Zvi 7 at the opposite end of the torsion shaft 2 is attached, move under a torsion of the shaft 1, the gear wheels of the flux conductors 3 and 5 against each other by the angle Φ and cause a relatively strong flow modulation in the radially opposite Hall sensors 8 and 9 , each of which receives the same change signal due to the torsion and is therefore also redundant in this regard.

In the diagram of Fig. 3, the output voltage U 1 is in the lower illustration by a dash-dot line 12 of the Hall sensor 8 and by a solid line 13, the output voltage U 2 of the Hall sensor 9 dependence in depen of the rotation angle α at a torque M 1 shown. In the upper representation, the dashed line 14 shows the output voltage U 1 of the Hall sensor 8 and the solid line 15 shows the output voltage U 2 of the Hall sensor 9 as a function of the angle of rotation α at a torque M 2 . Since both output voltages U 1 and U 2 run in phase opposition, in both cases the sum U 1 + U 2 essentially results in a straight line, shown here in dotted lines.

From Fig. 4, the course of the value of the sum of U 1 + U 2 in response to the torque acting on the shaft 1 M is now refer to the values for M 1 and M 2. The sum U 1 + U 2 increases linearly from a value for M min to M max .

Claims (8)

1. Sensor arrangement for detecting a torque and / or a rotation angle on a shaft ( 1 ), in particular for torsion measurement, with
  • - At least one on the shaft ( 1 ) fixedly arranged magnet ( 4 ) and at least one magnetic field sensitive sensor ( 8 , 9 ) and with
  • - In the magnetic field of the magnet ( 4 ) arranged Torsionse elements ( 3 , 5 , 7 ), which are each attached to different ends of a torsion area ( 2 ) on the shaft ( 1 ), with an offset of the angle of rotation (α) between the two torsion elements ( 3 , 5 , 7 ) leads to an electrical output signal (U 1 , U 2 ) of the at least one magnetic field sensitive sensor ( 8 , 9 ), characterized in that
  • - that there is a torsion of an annular ferromagnetic flux conductor (3) le on the Wel (1) the magnet (4) located also annular on the circumference of the shaft (1) is mounted adjacent that
  • - The other torsion element has a ferromagnetic flux guide piece ( 5 ), which surrounds a flux guide piece ( 3 ) on the shaft ( 1 ) in a ring with an air gap ( 6 ) that
  • - The two flow guide pieces ( 3 , 5 ) towards the air gap ( 6 ) have a sawtooth-like or other periodic contour on the circumference, which corresponds essentially to one another and that
  • - With at least one fixed magnetic field sensitive sensor ( 8 , 9 ) the magnetic flux ( 10 , 11 ) can be detected, which flows from the radially polarized magnet ( 4 ) over the flux guide pieces ( 3 , 5 ) and the respective air gap ( 6 ).
2. Sensor arrangement according to claim 1, characterized in that
  • - Two magnetic field sensitive sensors ( 8 , 9 ) are arranged radially opposite one another.
3. Sensor arrangement according to claim 2, characterized in that
  • - The sawtooth-like or other periodic contour of the respective flux guide ( 3 , 5 ) is designed such that the contour of the air gap ( 6 ) changes in phase opposition to the two magnetic field-sensitive sensors ( 8 , 9 ) when the shaft ( 1 ) rotates.
4. Sensor arrangement according to one of the preceding claims, characterized in that
  • - The at least one sensor element is a Hall sensor ( 8 , 9 ).
5. Sensor arrangement according to one of the preceding claims, characterized in that
  • - The sawtooth-like, or other periodic contour is designed so that a fault in the periodic structure is attached to one or two ge opposite locations, whereby an index mark for determining the position of the shaft ( 1 ) is set on the contour.
6. Sensor arrangement according to one of the preceding claims, characterized in that
  • - The torsion shaft ( 2 ) has a diameter taper in a predetermined range.
7. Sensor arrangement according to one of the preceding claims, characterized in that
  • - The other torsion element in the area between the second flux guide ( 5 ) and the attachment to the other end of the torsion shaft ( 2 ) has an intermediate piece ( 7 ) made of a non-ferromagnetic material.
8. Sensor arrangement according to one of the preceding claims, characterized in that
  • - The sensor arrangement is used as a reluctance, torque and speed sensor on a steering spindle in a motor vehicle.
DE19816568A 1998-04-15 1998-04-15 Sensor arrangement for detecting a torque and / or an angle of rotation Ceased DE19816568A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19816568A DE19816568A1 (en) 1998-04-15 1998-04-15 Sensor arrangement for detecting a torque and / or an angle of rotation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816568A DE19816568A1 (en) 1998-04-15 1998-04-15 Sensor arrangement for detecting a torque and / or an angle of rotation
PCT/DE1999/001012 WO1999053284A1 (en) 1998-04-15 1999-04-03 Sensor device for detecting a torque and/or angle of rotation

Publications (1)

Publication Number Publication Date
DE19816568A1 true DE19816568A1 (en) 1999-11-04

Family

ID=7864522

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19816568A Ceased DE19816568A1 (en) 1998-04-15 1998-04-15 Sensor arrangement for detecting a torque and / or an angle of rotation

Country Status (2)

Country Link
DE (1) DE19816568A1 (en)
WO (1) WO1999053284A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001046662A1 (en) * 1999-12-20 2001-06-28 Thomas Strothmann Arrangement for detecting angles of rotation, torques and other, preferably rotational, variables between rotating components in a contactless manner
WO2002084849A1 (en) * 2001-04-11 2002-10-24 Robert Bosch Gmbh Method and device for determining the rotational position of an electric induction machine
DE10254751A1 (en) * 2002-02-21 2003-09-04 Continental Teves Ag & Co Ohg Device for measuring the angle, angular velocity and moment of a motor vehicle steering rod comprises steering angle sensor and moment sensor mounted in a common housing on the steering rod to simplify assembly
FR2837282A1 (en) * 2002-03-07 2003-09-19 Denso Corp Torque sensor
DE102006026543A1 (en) * 2006-06-07 2007-12-13 Vogt Electronic Components Gmbh Position encoder and associated method for detecting a position of a rotor of a machine
WO2011141179A1 (en) * 2010-05-14 2011-11-17 Trw Automotive Gmbh Sensor assembly for motor vehicle steering systems
DE102015206664B3 (en) * 2015-04-14 2016-07-28 Schaeffler Technologies AG & Co. KG Hollow machine element and arrangement for measuring a force or a moment
WO2016162028A1 (en) * 2015-04-07 2016-10-13 Schaeffler Technologies AG & Co. KG Arrangement and method for contactless measurement of a torque on a machine element
DE102009021081B4 (en) * 2008-07-18 2017-07-06 Asm Automation Sensorik Messtechnik Gmbh Magnetic angle sensor
DE102018123608A1 (en) * 2018-09-25 2020-03-26 Marquardt Gmbh Crank gearbox with a crankshaft for connection to at least one foot or hand crank
DE102018123575A1 (en) * 2018-09-25 2020-03-26 Marquardt Gmbh Crank gearbox with a crankshaft for connection to at least one foot or hand crank

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104122020B (en) * 2014-08-06 2018-05-08 嘉兴学院 Sensing phase shift torch measuring system based on FPGA
JP6691500B2 (en) * 2017-03-31 2020-04-28 株式会社Soken Torque detector

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461685A (en) * 1945-04-30 1949-02-15 Westinghouse Electric Corp Torque and power measuring device for shafts
GB2050623A (en) * 1979-05-16 1981-01-07 Sangamo Weston Torque sensing apparatus
JPS58167934A (en) * 1982-03-29 1983-10-04 Omron Tateisi Electronics Co Torque detecting device
US4724710A (en) * 1986-12-22 1988-02-16 General Motors Corporation Electromagnetic torque sensor for a rotary shaft
US4784002A (en) * 1986-12-17 1988-11-15 Atsugi Motor Parts Company, Limited Torque sensor
DE3816234A1 (en) * 1987-05-12 1988-12-15 Nippon Denso Co Torque detecting device
US4984474A (en) * 1988-09-30 1991-01-15 Copal Company Limited Torque sensor
DE4038413A1 (en) * 1990-12-01 1992-06-04 Bosch Gmbh Robert Arrangement for measuring torque exerted on shaft by motor - using transducer wheels on actual shaft requiring no additional shaft
US5501110A (en) * 1992-06-26 1996-03-26 The Torrington Company Torsion measuring device for a rotating shaft
US5705750A (en) * 1995-03-15 1998-01-06 Sanyo Electric Co., Ltd. Ultrasonic sensor and pipetting apparatus using same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4680976A (en) * 1985-11-15 1987-07-21 Vibro-Meter Sa Torque or angle of torsion measuring device
DE4026749A1 (en) * 1990-08-24 1992-02-27 Edgar Beier Contactless measurer for torque and/or rotary angle - uses two concentric pieces fixed to shaft concerned to form air gap strengthening or weakening magnetic field

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461685A (en) * 1945-04-30 1949-02-15 Westinghouse Electric Corp Torque and power measuring device for shafts
GB2050623A (en) * 1979-05-16 1981-01-07 Sangamo Weston Torque sensing apparatus
JPS58167934A (en) * 1982-03-29 1983-10-04 Omron Tateisi Electronics Co Torque detecting device
US4784002A (en) * 1986-12-17 1988-11-15 Atsugi Motor Parts Company, Limited Torque sensor
US4724710A (en) * 1986-12-22 1988-02-16 General Motors Corporation Electromagnetic torque sensor for a rotary shaft
DE3816234A1 (en) * 1987-05-12 1988-12-15 Nippon Denso Co Torque detecting device
US4984474A (en) * 1988-09-30 1991-01-15 Copal Company Limited Torque sensor
DE4038413A1 (en) * 1990-12-01 1992-06-04 Bosch Gmbh Robert Arrangement for measuring torque exerted on shaft by motor - using transducer wheels on actual shaft requiring no additional shaft
US5501110A (en) * 1992-06-26 1996-03-26 The Torrington Company Torsion measuring device for a rotating shaft
US5705750A (en) * 1995-03-15 1998-01-06 Sanyo Electric Co., Ltd. Ultrasonic sensor and pipetting apparatus using same

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001046662A1 (en) * 1999-12-20 2001-06-28 Thomas Strothmann Arrangement for detecting angles of rotation, torques and other, preferably rotational, variables between rotating components in a contactless manner
DE19961884A1 (en) * 1999-12-20 2001-07-05 Thomas Strothmann Arrangement for contactless detection of angles of rotation, torques and other, preferably rotary, sizes between rotating parts
US6598490B2 (en) 1999-12-20 2003-07-29 Thomas Strothmann Apparatus for contact-less measuring the value of a difference angle between two parts rotating about a common axis
DE19961884C2 (en) * 1999-12-20 2003-08-21 Thomas Strothmann Arrangement for contactless detection of angles of rotation, torques and other, preferably rotational quantities between rotating parts
WO2002084849A1 (en) * 2001-04-11 2002-10-24 Robert Bosch Gmbh Method and device for determining the rotational position of an electric induction machine
DE10254751A1 (en) * 2002-02-21 2003-09-04 Continental Teves Ag & Co Ohg Device for measuring the angle, angular velocity and moment of a motor vehicle steering rod comprises steering angle sensor and moment sensor mounted in a common housing on the steering rod to simplify assembly
FR2837282A1 (en) * 2002-03-07 2003-09-19 Denso Corp Torque sensor
US6988422B2 (en) 2002-03-07 2006-01-24 Denso Corporation Magnetic torque sensor including integral sub-units
DE102006026543A1 (en) * 2006-06-07 2007-12-13 Vogt Electronic Components Gmbh Position encoder and associated method for detecting a position of a rotor of a machine
DE102006026543B4 (en) * 2006-06-07 2010-02-04 Vogt Electronic Components Gmbh Position encoder and associated method for detecting a position of a rotor of a machine
US8421446B2 (en) 2006-06-07 2013-04-16 Vogt Electronic Components Gmbh Position encoder and a method for detecting the position of a movable part of a machine
DE102009021081B4 (en) * 2008-07-18 2017-07-06 Asm Automation Sensorik Messtechnik Gmbh Magnetic angle sensor
WO2011141179A1 (en) * 2010-05-14 2011-11-17 Trw Automotive Gmbh Sensor assembly for motor vehicle steering systems
US9114833B2 (en) 2010-05-14 2015-08-25 Trw Automotive Gmbh Sensor assembly for motor vehicle steering systems
CN102947167B (en) * 2010-05-14 2015-10-21 Trw汽车股份有限公司 For the sensor module of automobile steering system
CN102947167A (en) * 2010-05-14 2013-02-27 Trw汽车股份有限公司 Sensor assembly for motor vehicle steering systems
WO2016162028A1 (en) * 2015-04-07 2016-10-13 Schaeffler Technologies AG & Co. KG Arrangement and method for contactless measurement of a torque on a machine element
CN107407608A (en) * 2015-04-07 2017-11-28 舍弗勒技术股份两合公司 Apparatus and method for measuring the torque on mechanical part in a non-contact manner
DE102015206664B3 (en) * 2015-04-14 2016-07-28 Schaeffler Technologies AG & Co. KG Hollow machine element and arrangement for measuring a force or a moment
US10151651B2 (en) 2015-04-14 2018-12-11 Schaeffler Technologies AG & Co. KG Hollow machine element and assembly for measuring a force or a torque
DE102018123608A1 (en) * 2018-09-25 2020-03-26 Marquardt Gmbh Crank gearbox with a crankshaft for connection to at least one foot or hand crank
DE102018123575A1 (en) * 2018-09-25 2020-03-26 Marquardt Gmbh Crank gearbox with a crankshaft for connection to at least one foot or hand crank
WO2020064827A1 (en) 2018-09-25 2020-04-02 Marquardt Gmbh Crank transmission with a crankshaft for connection to at least one foot-operated or hand-operated crank

Also Published As

Publication number Publication date
WO1999053284A1 (en) 1999-10-21

Similar Documents

Publication Publication Date Title
CA2213657C (en) Circularly magnetized non-contact torque and power sensor and method for measuring torque and power using same
DE69906917T2 (en) Non-contact position measuring device with tapered bipolar magnets
US7276899B2 (en) Positional transducer and motor driven gear changer for a bicycle
DE60214410T2 (en) multirotation type encoder
US6868743B2 (en) Highly reliable torque sensor
US4881414A (en) Torque detection apparatus
US6810754B2 (en) Magnetic-based transducer for measuring displacement
US9389099B2 (en) Multi-turn absolute magnetic encoder
US6576890B2 (en) Linear output non-contacting angular position sensor
DE10041095B4 (en) Device for measuring an angle and / or a torque of a rotatable body
EP1203210B1 (en) Magnetised transducer element for torque or force sensor
KR930011087B1 (en) Torque measuring apparatus
US6935193B2 (en) Device for measuring the angle and/or the angular velocity of a rotatable body and/or the torque acting upon said body
EP0046517B1 (en) Method for the contactless measurement of static and dynamic torques
EP0325787B1 (en) Multiturn shaft position sensor
US4785242A (en) Position detecting apparatus using multiple magnetic sensors for determining relative and absolute angular position
US4626781A (en) Device for detecting the speed of rotation and/or an angle of rotation of a shaft
US5026178A (en) Sensor bearings for determining rotational speed and/or angle of torsion
EP0914590B1 (en) Device for determining the position of rotating shafts
US5164668A (en) Angular position sensor with decreased sensitivity to shaft position variability
EP0271633B1 (en) Torque sensor
DE102008008835B4 (en) Device for determining a torque
US8890514B2 (en) Magnetic multi-periodic absolute position sensor
US6703829B2 (en) Magnetic position sensor
US8490499B2 (en) Sensor system for ascertaining a torque and for index detection

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection