EP2734812A1 - Dispositif de détermination de paramètres de mouvement - Google Patents

Dispositif de détermination de paramètres de mouvement

Info

Publication number
EP2734812A1
EP2734812A1 EP12729372.8A EP12729372A EP2734812A1 EP 2734812 A1 EP2734812 A1 EP 2734812A1 EP 12729372 A EP12729372 A EP 12729372A EP 2734812 A1 EP2734812 A1 EP 2734812A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
multipole
field
measuring
coil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12729372.8A
Other languages
German (de)
English (en)
Inventor
Wolfgang Welsch
Frank Schatz
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
Publication of EP2734812A1 publication Critical patent/EP2734812A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/204—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils

Definitions

  • the invention relates to a device for determining motion parameters according to the preamble of independent claim 1.
  • a magnetic multipole is often used today, whose magnetic field is then measured with a magnetic sensor.
  • the multipole can be used in the form of a wheel (multipole wheel) or as a linear scale (scale).
  • Such multipoles are available in the form of adhesive tapes or on magnetized components.
  • the magnetic field is usually measured with Hall, AMR or GMR sensors. This gives an approximately sinusoidal output signal. This makes it possible to subdivide the scale given by the multipole and to specify the position even for intermediate values. For an accurate measurement, this is helpful to measure only the speed but unnecessary. More cost-effective concepts would have the advantage here.
  • Another disadvantage of these concepts is that all sensors show a significant temperature influence with respect to the signal (TKE and TKO) and also can no longer be used at temperatures above 150-200 ° C.
  • a simpler and less expensive concept is to use a simple spool for
  • a device for non-contact detection of linear or rotational movements operates with a stationary magnetoresistive chip sensor and a magnetic field transmitter device adjacent to it, leaving an air gap free, whose individual magnet segments are polarized in their polarity alternately substantially in one direction of a three-dimensional coordinate system.
  • the chip sensor is arranged with its large surfaces substantially perpendicular or parallel or in any angular position therebetween to the surface of the multipole arrangement.
  • the applicant's earlier patent application DE 10 2009 001 395.4 discloses a device for measuring a magnetic field which comprises an exciter coil and a magnetizable core material.
  • the core material has a first Weiss district and a second Weiss district, with the first Weiss district and the second Weiss district adjacent to a common Bloch wall.
  • an alternating voltage is applied to the exciting coil to form a periodically alternating magnetic field, whereby the core material is periodically re-magnetized.
  • the magnetic field to be measured and the magnetic field of the exciter coil overlap, whereby the remagnetization of the core material is shifted in time. From the temporal shift of the magnetic reversal of the core material can be concluded that the magnetic field to be measured.
  • the device has a measuring coil for measuring the magnetic field change of the core material, the time of the magnetic reversal being determined by a voltage change induced in the measuring coil, in particular a voltage pulse.
  • the inventive device for determining movement parameters with the features of independent claim 1 has the advantage that the at least one magnetic sensor is designed as a so-called Flipcore sensor with a magnetizable core, a drive coil and a measuring coil and for measuring rotational speed or measuring linear movements can be used.
  • the at least one magnetic sensor of the device according to the invention can advantageously be used to determine motion parameters
  • the essential advantage of the use of magnetic sensors designed as flip-core sensors in the device according to the invention for determining motion parameters is that these sensors have the same sensitivity as AMR / GMR sensors, but are made more robust and have no temperature dependency.
  • the at least one magnetic sensor immediately measures again correctly and delivers correct measured values for evaluation. This makes it possible to measure a field zero crossing of the alternating magnetic field very accurately when measuring rotational speeds with multipole wheels or even during the measurement of linear movements, even if the alternating magnetic field has a maximum which lies outside the measuring range of the at least one magnetic sensor. For known AMR / GMR sensors, this can only be achieved with greater effort (cost).
  • Embodiments of the present invention provide a device for determining motion parameters, which comprises a magnetic multipole, which generates an alternating magnetic field, at least one magnetic sensor for measuring the magnetic field of the magnetic multipole and an evaluation and control unit for evaluating the signals of the at least one magnetic sensor , In this case, a relative movement between the magnetic multipole and the at least one magnetic sensor can be evaluated.
  • the at least one magnetic sensor comprises a magnetizable core, a driver coil and a measuring coil, wherein the evaluation and control unit acts on the driver coil with a periodic driver signal to effect a periodic remagnetization of the core, and determines the Ummagnethneszeitfound of the core via the measuring coil.
  • the evaluation and control unit determined from the evaluation and control unit
  • Ummagnetleiterszeitticianen a current value of the effective magnetic field of the magnetic multipole within a predetermined measuring range, which represents an area around a zero crossing of the magnetic field of the magnetic see multipole.
  • Ummagnetleiterszeitticianen a current value of the effective magnetic field of the magnetic multipole within a predetermined measuring range, which represents an area around a zero crossing of the magnetic field of the magnetic see multipole.
  • Magnetic reversal of the core preferably generated by a triangular current generated in the drive coil as a drive signal. Since the effective magnetic field of the magnetic multipole influences the core core remover timing given by the periodic drive signal, the evaluation and control unit compares the core predetermined magnetization timing and the core core actual magnetization time determined to the actual effective magnetic field value of the magnetic multipole determine.
  • the at least one magnetic sensor For measuring a rotational speed or a linear movement, it is sufficient to measure the field zero crossing of the alternating magnetic field of the magnetic multipole. If, for example, the course of the field is represented as a sinusoidal curve, the at least one magnetic sensor would always measure the magnetic field around the zero crossing. The field strength of the magnetic field in this area can be measured very accurately. If the magnetic field exceeds the measurable value range, the at least one magnetic sensor no longer measures. However, it can measure without destruction and history immediately, as soon as the magnetic field is again in the measurable range of the at least one magnetic sensor. Since a period of the periodic driver signal is always required for the measurement, the measurement consists of a number of measuring points, which are measured in the measuring range of the at least one magnetic sensor.
  • the number of actual values of the effective magnetic field of the magnetic multipole determined in the given measuring range depends on a rotational frequency and / or moving speed of the relative movement between the magnetic multipole and the at least one magnetic sensor and / or on the frequency of the periodic driver signal.
  • the frequency of the periodic driver signal is advantageously chosen so that the number of measuring points in the region of the zero crossing is large enough to be able to determine the zero crossing of the alternating magnetic field of the magnetic multipole accurately.
  • the frequency of the periodic drive signal should be at least ten times, preferably at least one hundred times greater than the maximum frequency of the alternating magnetic field of the magnetic multipole at a maximum detectable speed of the relative movement between the magnetic multipole and the at least one magnetic sensor.
  • the core of the at least one magnetic sensor is formed as a soft magnetic thin-film core, which has one or more magnetic layers, wherein in each case between two magnetic layers, a separation layer is arranged to prevent a cross-layer crystallization between two adjacent magnetic layers.
  • the driver coil and the measuring coil can be arranged on a substrate layer, wherein the soft magnetic thin-film core is arranged inside the driver coil and the measuring coil and separated from the driver coil and the measuring coil by at least one insulating layer. This allows a very compact design of the at least one magnetic sensor.
  • a plurality of magnetic sensors with or without evaluation unit can be combined to form a sensor unit with which, in addition to a rotational speed and / or speed and / or traveled distance, a direction of motion can also be determined and / or an interference field can be detected and compensated.
  • two magnetic sensors are arranged at a predetermined distance in the magnetic field of the magnetic multipole. This allows depending on the predetermined distance of the two magnetic sensors, a determination of the direction of movement and / or detection and compensation of an interference field.
  • the evaluation unit determines a number of field zero crossings of the magnetic field of the magnetic multipole and calculates a speed and / or speed and / or a distance covered from the determined number of field zero crossings.
  • two magnetic sensors are required, which are mounted slightly offset from one another.
  • the evaluation unit can calculate the direction of movement of the relative movement between the magnetic multipole and the at least one magnetic sensor by the sequence with which the two magnetic cores remagnetize one after the other. Even interference fields or offset fields can in principle be detected with a suitable arrangement of two magnetic sensors.
  • a predetermined second distance between the two magnetic sensors corresponds to a distance between two adjacent zero crossings of the magnetic field of the magnetic multipole.
  • the evaluation unit advantageously recognizes a magnetic interference field or offset field if the magnetization reversal of the two measuring sensors arranged at a predetermined second distance from one another takes place at different times.
  • the evaluation unit determines a real zero-crossing torque as the mean value between the two different times of the magnetic reversal of the two measuring sensors and thereby advantageously compensates for the detected magnetic interference field or offset field.
  • FIG. 1 shows a schematic block diagram of an exemplary embodiment of a device according to the invention for determining motion parameters.
  • FIG. 2 shows a schematic illustration of an exemplary embodiment of a magnetic sensor according to the invention for measuring a magnetic field of a magnetic multipole for the device for determining motion parameters from FIG. 1.
  • FIG. 3 shows a schematic perspective representation of an embodiment of a magnetic core for the magnetic sensor according to the invention for measuring a magnetic field of a magnetic multipole from FIG. 2.
  • FIG. 4 shows a schematic representation of a first exemplary embodiment of a device for determining motion parameters.
  • FIG. 5 shows a schematic representation of a second exemplary embodiment of a device for determining motion parameters.
  • FIG. 6 shows a schematic representation of a third exemplary embodiment of a device for determining motion parameters.
  • the exemplary embodiment of a device 1 for determining motion parameters comprises a magnetic multipole 20 which generates an alternating magnetic field, at least one magnetic sensor 10 a, 10 b, 10 b 'for measuring the magnetic field of the magnetic multipole 20 and an evaluation unit 30 for evaluating the signals S A , S B , S B 'of the at least one magnetic sensor 10 a, 10 b , 10 b ', wherein a relative movement between the magnetic multipole 20 and the at least one magnetic sensor 10 a, 10 b , 10 b 'can be evaluated.
  • the device 1 for determining motion parameters may comprise only one magnetic field sensor 10a arranged in the alternating magnetic field of the multipole 20, if only one current rotational speed and / or speed speed and / or a currently traveled distance to be determined. If, in addition, the direction of motion is to be determined or an interference field is detected and compensated, then at least one further dashed-line magnetic field sensor 10b, 10b 'is required, which is arranged in the alternating magnetic field of the multipole 20.
  • the multipole 20 may, for example in the form of a
  • Rades multipole or as a linear scale (scale) are used and includes individual magnet segments, which alternate in their magnetic polarity.
  • a plurality of magnetic sensors 10a, 10b, 10b ' can be combined with or without evaluation and control unit 30 to form a sensor unit 5, with which besides a rotational speed and / or speed and / or traveled distance also determines a direction of movement and / or detects an interference field and can be compensated.
  • the at least one magnetic sensor 10a, 10b, 10b comprises a magnetizable core 16, a driver coil 18.1 and a measuring coil 18.2, whereby the evaluation and control unit 30 applies a periodic driver signal S T to the driver coil 18.1 in order to periodically remagnetise the sensor Kerns 16 to cause, and on the measuring coil 18.2 the
  • Ummagnetleiterszeitticianen determines the evaluation and control unit 30, a current value of the effective magnetic field of the magnetic multipole 20 within a predetermined measuring range, which represents an area around a zero crossing of the magnetic field of the magnetic multipole 20. Since the effective magnetic field of the magnetic multipole 20 influences the re-magnetization times of the core 16 given by the periodic driver signal S T , the evaluation and control unit 30 compares the predetermined re-magnetization time of the core 16 with the actual re-magnetization time of the core 16 and uses this comparison to determine current value of the effective magnetic field of the magnetic multipole 20.
  • the core 16 is formed as a soft-magnetic thin-film core, which is re-magnetized by the periodic driver signal S T via the driver coil 18.1 at predetermined times.
  • the driver coil 18. 1 and the measuring coil 18. 2 are preferably arranged on a substrate layer 12 made of silicon, and the soft-magnetic thin-layer core 16 is located within the driver coil 18. 1 and arranged the measuring coil 18.2 and separated by at least one insulating layer 14 of the driver coil 18.1 and the measuring coil 18.2.
  • the soft-magnetic thin-film core 16 has a plurality of magnetic layers 16.1 in the exemplary embodiment shown, wherein a separating layer 16.2 is arranged in each case between two magnetic layers 16.1 in order to prevent cross-layer crystallization between two adjacent magnetic layers 16.1.
  • the thin-film core 16 comprises only one magnetic layer 16.1, so that the separating layer 16.2 can be dispensed with.
  • the at least one magnetic sensor 10a, 10b, 10b 'always measures the current values of the magnetic field of the magnetic multipole 20 in the regions the zero crossing, which are shown in Fig. 4 to 6 as a black bar. The field strength in these areas can be measured very accurately. If the magnetic field of the magnetic multipole 20 exceeds the measurable value range, the at least one magnetic sensor 10a, 10b, 10b 'no longer measures. Once the values of the
  • Magnetic field of the magnetic multipole 20 again enter the measuring range of the at least one magnetic sensor 10a, 10b, 10b 'provides this again corresponding measured values S A , S B , S B ' for evaluation available.
  • the evaluation and control unit 30 determines a number of measuring points in the measuring range of at least one Magnetic sensor 10a, 10b, 10b 'are measured.
  • the number of actual values of the effective magnetic field of the magnetic multipole 20 determined in the given measuring range is determined by a rotational frequency and / or moving speed of the relative movement between the magnetic multipole 20 and the at least one magnetic sensor 10a, 10b, 10b 'and / or the frequency the periodic driver signal S T dependent.
  • the sensor concept corresponds to an inductive principle, wherein the induction in the measuring coil 18.2 is not due to the external field (multipole field), but due to the sudden remagnetization of the core 16 by the driver signal S T , which is provided for example as a triangular drive current S T available.
  • This sudden remagnetization can be achieved by the special geometry and the high permeability of the core 16, which is described for example in the earlier patent application DE 10 2009 001 395.4 of the applicant.
  • the frequency of the periodic drive signal S T is advantageously chosen so that the number of measurement points in the regions of the zero crossings of the magnetic field of the magnetic multipole 20 is large enough to be able to determine the zero crossings of the alternating magnetic field of the magnetic multipole 20 exactly ,
  • the frequency of the periodic drive signal S T should be at least ten times, preferably at least one hundred times greater than the maximum frequency of the alternating magnetic field of the magnetic multipole 20 at a maximum detectable speed of the relative movement between the magnetic multipole 20 and the at least one magnetic sensor 10 a , 10b, 10b '.
  • FIG. 4 shows a first exemplary embodiment of the device 1 for determining motion parameters, in which only one magnetic sensor 10a is arranged in the alternating magnetic field of the multipole 20, which has a sinusoidal profile.
  • the multipole 20 includes, for example, individual magnetic segments, not shown, which alternate in their magnetic polarity.
  • the evaluation and control unit 30 determines the actual values of the magnetic field of the magnetic multipole 20 from the output signal S A of the magnetic sensor 10 a in the corresponding measuring range shown in bold. By counting the field zero crossings within a predetermined time window, the evaluation and control unit 30 can determine the rotational speed or determine the speed or the distance traveled.
  • Fig. 5 shows a second embodiment of the device 1 for determining
  • Motion parameters in which two magnetic sensors 10a, 10b are arranged in the alternating magnetic field of the multipole 20.
  • the magnetic field of the magnetic multipole 20 has a sinusoidal shape, and the multipole 20 includes individual magnetic segments, not shown, which alternate in their magnetic polarity.
  • the two magnetic sensors 10a, 10b are at a predetermined first distance A1 to each other in the magnetic field of the magnetic multipole 20. This means that the two magnetic sensors 10a, 10b in the illustrated second embodiment are arranged slightly offset from one another.
  • the two magnetic sensors 10a, 10b detect a field zero crossing at different times, wherein the evaluation and control unit 30 from a sequence with which the two with a predetermined first distance A1 mutually arranged measuring coils 10a, 10b, ie detect the associated field zero crossing, a direction of movement the relative movement between the magnetic multipole 20 and the at least one Magnetsen- sensor 10a, 10b calculated.
  • the evaluation and control unit 30 can determine the rotational speed or the speed or the distance traveled.
  • FIG. 6 shows a third exemplary embodiment of the device 1 for determining motion parameters, in which two magnetic sensors 10a, 10b 'are arranged in the alternating magnetic field of the multipole 20.
  • the magnetic field of the magnetic multipole 20 has a sinusoidal shape, and the multipole 20 includes individual magnetic segments, not shown, which alternate in their magnetic polarity.
  • the two magnetic sensors 10a, 10b 'are at a predetermined second distance
  • the two magnetic sensors 10a, 10b 'in the illustrated third embodiment have a distance from each other which corresponds to a distance between two adjacent zero crossings of the magnetic field of the magnetic multipole 20.
  • interference fields or offset fields can also be detected and compensated. If there is no interference field or offset field, the magnetic reversal of the two magnetic sensors 10a, 10b 'takes place simultaneously. When an interference field or offset field occurs, the remagnetization times of the two magnetic sensors 10a, 10b 'are shifted by the field of the multipole required for compensation of the interference field or offset field
  • the evaluation and control unit 30 can determine the speed or the speed or the distance traveled. In addition, the evaluation and control unit 30 can detect from a shift in the determined zero crossings whether an interference field or offset field is active or not. Is this done?
  • the evaluation and control unit 30 detects an interference field or offset field.
  • the evaluation and control unit 30 determines a real zero-crossing torque as the average value between the two different times of the remagnetization of the two measuring coils 10a, 10b 'and thereby compensates the detected magnetic interference field.
  • Embodiments of the present invention have provided a device for determining motion parameters, in particular for measuring rotational speed or for measuring linear movements, which advantageously can be produced inexpensively and has high sensitivity, zero offset and temperature independence.
  • embodiments of the present invention can not be destroyed by exceeding the measurement range or changed with respect to any parameters.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

L'invention concerne un dispositif (1) pour la détermination de paramètres de mouvement comportant un multipôle magnétique (20) produisant un champ magnétique alternatif, au moins un capteur magnétique (10a, 10b, 10b') pour la mesure du champ magnétique du multipôle magnétique (20) et une unité d'évaluation et de commande (30) pour l'évaluation des signaux (SA, SB, SB') du ou des capteurs magnétiques (10a, 10b, 10b'), un mouvement relatif entre le multipôle magnétique (20) et le ou les capteurs magnétiques (10a, 10b, 10b') pouvant être évalué. Selon l'invention, le ou les capteurs magnétiques (10a, 10b, 10b') comprennent un noyau magnétisable, une bobine excitatrice et une bobine de mesure, l'unité d'évaluation et de commande (30) sollicitant la bobine d'excitation par un signal d'excitation périodique (ST) pour provoquer un changement périodique de la magnétisation du noyau et déterminant par l'intermédiaire de la bobine de mesure les instants de changement de magnétisation du noyau (16), l'unité d'évaluation et de commande (30) déterminant à partir des instants de changement de magnétisation une valeur momentanée du champ magnétique efficace du multipôle magnétique (20) à l'intérieur d'une plage de mesure spécifiée, laquelle représente un intervalle autour d'un passage à zéro du champ magnétique du multipôle magnétique (20).
EP12729372.8A 2011-07-22 2012-05-22 Dispositif de détermination de paramètres de mouvement Withdrawn EP2734812A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011079631A DE102011079631A1 (de) 2011-07-22 2011-07-22 Vorrichtung zur Ermittlung von Bewegungsparametern
PCT/EP2012/059459 WO2013013855A1 (fr) 2011-07-22 2012-05-22 Dispositif de détermination de paramètres de mouvement

Publications (1)

Publication Number Publication Date
EP2734812A1 true EP2734812A1 (fr) 2014-05-28

Family

ID=46354160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12729372.8A Withdrawn EP2734812A1 (fr) 2011-07-22 2012-05-22 Dispositif de détermination de paramètres de mouvement

Country Status (7)

Country Link
US (1) US9612135B2 (fr)
EP (1) EP2734812A1 (fr)
JP (1) JP2014521109A (fr)
CN (1) CN103718003B (fr)
BR (1) BR112014001186A2 (fr)
DE (1) DE102011079631A1 (fr)
WO (1) WO2013013855A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102016120638B4 (de) * 2016-10-28 2018-10-18 Preh Gmbh Eingabegerät mit Betätigungsteil und magnetischem Messfeld zur Ermittlung eines Positionsparameters des Betätigungsteils
DE102018215783A1 (de) * 2018-09-18 2020-03-19 Robert Bosch Gmbh Positionserfassungssystem und Verfahren zur Erfassung einer Bewegung einer Maschine

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DE3411773A1 (de) * 1984-03-30 1985-05-23 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zur erfassung der drehzahl und/oder eines drehwinkels einer welle
EP0191223A3 (fr) 1984-11-09 1988-02-24 The Superior Electric Company Capteur à couplage magnétique
DE4220801A1 (de) * 1992-06-25 1994-01-05 Bosch Gmbh Robert Wegmeßsystem für eine Fahrwerkregelung
US6118271A (en) * 1995-10-17 2000-09-12 Scientific Generics Limited Position encoder using saturable reactor interacting with magnetic fields varying with time and with position
DE19621886C2 (de) * 1996-05-31 2000-11-30 Heidenhain Gmbh Dr Johannes Magnetische Positionsmeßeinrichtung
BR9905263A (pt) * 1999-09-30 2001-06-12 Elevadores Atlas S A Sensor de posição pela permanência magnética
JP2001281308A (ja) * 2000-03-29 2001-10-10 Sony Precision Technology Inc 磁気センサ及び位置検出装置
GB2383417B (en) * 2001-12-20 2005-10-05 Weston Aerospace Sensing method and apparatus
US7535221B2 (en) * 2006-03-17 2009-05-19 Citizen Holdings Co., Ltd. Magnetic sensor element and electronic directional measuring device
EP2137499B1 (fr) * 2006-12-21 2017-03-15 Micro-Epsilon Messtechnik GmbH & Co. KG Procédé et système de détecteur pour la détermination de la position et/ou de la modification de la position d'un objet mesuré par rapport à un détecteur
DE102007023385A1 (de) 2007-05-18 2008-11-20 Robert Bosch Gmbh Vorrichtung zur berührungslosen Erfassung von Linear- oder Rotationsbewegungen
TW201033632A (en) 2009-03-09 2010-09-16 Bosch Gmbh Robert Apparatus and method for measuring magnetic field
DE102009044988A1 (de) * 2009-09-24 2011-03-31 Robert Bosch Gmbh Leistungsoptimierte Ansteuerung eines Fluxgatesensors

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Also Published As

Publication number Publication date
US20140184206A1 (en) 2014-07-03
JP2014521109A (ja) 2014-08-25
WO2013013855A1 (fr) 2013-01-31
DE102011079631A1 (de) 2013-01-24
BR112014001186A2 (pt) 2017-02-21
CN103718003A (zh) 2014-04-09
US9612135B2 (en) 2017-04-04
CN103718003B (zh) 2017-08-11

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