EP2478336A1 - Dispositif pour obtenir des signaux angulaires - Google Patents

Dispositif pour obtenir des signaux angulaires

Info

Publication number
EP2478336A1
EP2478336A1 EP10754498A EP10754498A EP2478336A1 EP 2478336 A1 EP2478336 A1 EP 2478336A1 EP 10754498 A EP10754498 A EP 10754498A EP 10754498 A EP10754498 A EP 10754498A EP 2478336 A1 EP2478336 A1 EP 2478336A1
Authority
EP
European Patent Office
Prior art keywords
brand
mark
strip
component
division
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Withdrawn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
EP10754498A
Other languages
German (de)
English (en)
Inventor
Alexander Friedl
Martin Baumgartner
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.)
Piezocryst Advanced Sensorics GmbH
Original Assignee
Piezocryst Advanced Sensorics 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 Piezocryst Advanced Sensorics GmbH filed Critical Piezocryst Advanced Sensorics GmbH
Publication of EP2478336A1 publication Critical patent/EP2478336A1/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Withdrawn legal-status Critical Current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
    • G01D5/26—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/347—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 characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
    • G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
    • 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
    • G01D5/244—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 characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/245—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 characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
    • G01D5/2454—Encoders incorporating incremental and absolute signals
    • G01D5/2455—Encoders incorporating incremental and absolute signals with incremental and absolute tracks on the same encoder
    • G01D5/2457—Incremental encoders having reference marks

Definitions

  • the invention relates to a device for obtaining angle signals on a component rotating about an axis, for example an output shaft of a motor, with a mark carrier which can be fastened to the component and has markers which can be read by a sensor device.
  • a trigger mark is applied to the circumference of the output shaft, which is very easy to use, but results in an inaccurately working method because of non-uniformities of rotation and speed Fluctuations in the engine an exact angle assignment of the measured parameters is impossible.
  • JP 2007-003505 shows an optical linear encoder in which multiple scales of the measuring system must be pieced together for long distances to be measured. To avoid measuring errors at the joints, the measuring system has two photodetectors, which are directed at two measuring tracks of the measuring strip specially cut at the joint.
  • an angle measuring system which consists of several elements. In the radial direction, starting from the shaft to which the angle measuring system is attached, it has a directly resting on the shaft clamping ring, a relatively thick, elastic intermediate layer and the actual tape measure with a measuring graduation.
  • the clamping ring and the measuring tape have mutually independent clamping or adjusting devices, which are arranged opposite with respect to the shaft, wherein the function of fixing the tape measure on the shaft and the function of the adjustment are decoupled.
  • the two ends of the measuring tape are connected via the adjusting device and adjusted to each other so that the division is not interrupted at the joint. For this purpose, it may be necessary to edit the two ends before mounting accordingly.
  • a reference mark is arranged laterally on the measuring tape.
  • the measuring system is also extremely inflexible and is only suitable for use on shafts whose penetration or whose scope may vary only in the range of adjustment of the clamping ring.
  • an existing starter ring can be used as a donor disk, but in the housing only with appropriate effort access to the pulse generator must be made.
  • the object of the present invention is to improve a device for obtaining angle signals such that it can be used in a simple manner on rotating components of very different diameters and, in particular, is also suitable for enabling angle-based measurements on output shafts of large engines.
  • the mark carrier consists of a non-stretchable, flexible brand strip with any independent of the scope of the rotating component brand division, which is attached directly to the rotating component, preferably glued directly or clamped, so that the two end portions form the brand strip after attachment to the component a shock, gap or overlap area, in which the brand division has a discontinuity, which serves as a trigger mark for the angle signal measurement.
  • the acquisition of angle signals for example on a drive shaft of an engine, is thereby considerably simplified and universally applicable.
  • the inventive method comprises the following steps:
  • the scope of the wave is in almost all applications is not an integer multiple of a given mark division, so that at the impact of an uneven pitch occurs (in the case of an optical evaluation of black / black to white / white all variants occur). This is not a disadvantage, but On the contrary, it is used to make the required trigger mark. It can be a certain area before and after the joint -. B. a total of three brands - be colored black. Now a brand strip with a still unknown number of brands and a measurable black area is applied to the output shaft.
  • the number of marks can now be determined in one revolution.
  • the circumference and thus the exact angle per division can be determined by the number of marks, the geometric length of the black-colored distance and the given pitch between light / dark.
  • the long black distance can be converted to an exact angle value, so that the sum of the pitches plus the black distance gives 360 °.
  • the brand strip may consist of a magnetically conductive material and have regularly arranged holes, punches, punched holes, protrusions or elevations which generate fields along the brand stiffener with alternatingly different magnetic resistance, which can be read by an inductive measuring sensor of the sensor device.
  • the brand strip can be present as a preferably roll-up endless belt, which is equipped for example on one side with an adhesive surface for attachment to the rotating component.
  • the brand strip 16 can be present as a metal strip or metal strip which can be cut to length for the respective application, for example a structured metal strip.
  • the invention will be explained in more detail below with reference to partly schematic drawings. Show it :
  • FIG. 1 shows a device according to the invention for obtaining angle signals
  • FIG. 2 shows a detail of a flexible brand strip according to the invention in plan view
  • Fig. 2a is a longitudinal section of the brand strip of FIG. 2;
  • FIGS. 3 to 6 show different configurations of a shock or overlap region when the marker strips are glued onto a rotating component
  • FIG. 7 shows a variant of the device according to FIG. 1 with an electromagnetic or capacitive sensor device
  • FIG. 8 shows a variant of the device according to FIG. 1 with an inductive sensor device
  • Fig. 9 is an enlarged detail of the device of FIG. 8;
  • FIG. 10 shows a brand strip together with clamping device of a variant of the device according to FIG. 8th;
  • FIG. 11 shows a tensioning element of the tensioning device according to FIG. 10;
  • Fig. 12 shows a variant of the clamping device of FIG. 10; such as
  • FIGS. 13 and 14 show variants of an inductive tag strip.
  • the device 10 shown schematically in Fig. 1 for obtaining angle signals on a rotating about an axis member 11, for example, an output shaft of an engine 12, has a mark carrier 13, which consists of a non-stretchable, flexible brand strip 16 and after cutting on a free, cylindrical jacket portion of the output shaft 11 is glued or clamped.
  • the brand strip 16 has a uniform, but on the circumference of the rotating member 11 independent mark division, which - when using an optical measuring principle - for example, by differently colored (black / white) fields 15, 15 'is realized.
  • the fields 15, 15 ' are scanned in the example shown by an optical sensor device 14, which consists of a photodetector 17 with downstream signal processing 19.
  • the sensor device 14 can additionally have a light source 18 with which the scanning region of the brand strip 16 is uniformly illuminated.
  • the brand strip 16 can be present as a roll-up endless belt, which is provided on one side with an adhesive surface 22 (the thickness of the brand strip 16 is shown in Fig. 2a exaggerated).
  • the brand strip 16 can therefore be realized by an adhesive tape which alternately has black and white colored areas in the running direction.
  • the circumference of the component 11 is an integer multiple of the mark division, so that a white field 15 and a black field 15 'meet.
  • At least one additional marking 23, for example due to blackening of a white field, can now be applied in the abutting or overlapping region of the brand strip 16 after attachment to the rotating component, so that the trigger mark is enlarged in the circumferential direction of the rotating component.
  • the black area is three times the width of the usual fields.
  • a narrower white field 15 remains in the impact or overlap region 21 (FIG. 5) or a narrower black field 15 '(FIG. 6).
  • the trigger mark can be increased accordingly, wherein the counting process is started, for example, with the white field following the trigger mark.
  • the mark division can be realized by differently magnetized fields 15, 15 'of the brand strip 16 (eg a magnetic tape) which can be read by an electromagnetic reading head 24 of the sensor device 14. It is also possible to realize the brand division of the brand strip 16 by fields 15, 15 'with alternately different dielectric properties and / or different height with respect to a capacitive read head 25 of the sensor device 14.
  • the electromagnetic read head 24 or the capacitive read head 25 is aligned here radially to the output shaft 11.
  • FIG. Fig. 8 together with detail according to FIG. Fig. 9 shows an embodiment of the invention in which the brand strip 16 is made of a magnetically conductive material and has regularly arranged punched-28, which generate with the remaining webs 29 along the Klaussteifens 16 fields 15, 15 'with alternately different magnetic resistance, which can be read by an (active or passive) inductive sensor 30 of the sensor device 14.
  • the remaining webs 29 between the punched holes 28 are directed radially outward, so that in this variant, an axially parallel to the output shaft 11 arranged sensor 30 can be used.
  • the brand strip 16 has a fitting to the shaft 1 mounting track 31, to which a clamping ring 32 (for example, a metallic cable tie) may be arranged to secure the brand strip to form a gap region 21 on the output shaft 11.
  • a clamping ring 32 for example, a metallic cable tie
  • the brand strip 16 for example, for an inductive sensor 30, at least on one side, preferably on both sides of the brand division have a mounting track 31 which preferably cooperates frictionally or frictionally with a tensioning device 27.
  • the variable in the longitudinal direction of the flexible brand strip 16 assembly of the clamping device 27 can be done by hanging, riveting, chlinchen, crimping, etc.
  • the clamping device 27 in the gap 21 abutting ends of the brand strip 16 attachable tendons 33 (see detail of FIG. 11), which are screwed by means of actuators 34.
  • the clamping members 33 and the two fastening tracks 31 of the brand strip 16 regularly arranged, corresponding locking elements 35, 36, which produce a non-positive connection after hanging.
  • the present in the middle of the two mounting tracks 31 mark division can be formed by holes or holes or by punching 28 and bow-shaped webs 29.
  • the shape of the cutouts 28 maintains the flexibility of the brand strip 16.
  • Fig. 12 shows a variant of the tensioning device, in which the brand strip 16 or its attachment track 31 has upwardly bent webs 32 which engage in punch-outs 37 of a tensioning element 33 '.
  • Figures 13 and 14 show alternative embodiments of the mark division of the brand strip 16, wherein instead of the sequence of punches 28 and bow-shaped webs 29 (Figure 10), punctures 38 are made without loss of material (Figure 13) in a regular sequence or by deep drawing raised bumps 39 (Figure 14) can be made.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Optical Transform (AREA)

Abstract

L'invention concerne un dispositif (10) pour l'obtention de signaux angulaires sur un composant (11) tournant autour d'un axe, par exemple un arbre de sortie d'un moteur (12), comprenant un support de repères (13) pouvant être fixé sur le composant (11), lequel présente des repères (15, 15') pouvant être lus par un dispositif capteur (14). Selon l'invention, le support de repères comprend une bande de repères (16) flexible et non extensible avec une division de repères quelconque, indépendante de l'étendue du composant rotatif (11), qui est fixée, de préférence collée directement ou tendue, sur le composant rotatif (11). Les deux zones d'extrémité de la bande de repères (16) forment après leur fixation sur le composant (11) une zone d'aboutement, d'intervalle ou de recouvrement (21), dans laquelle la division de repères présente une instabilité qui sert de repère de déclenchement pour la mesure de signal angulaire.
EP10754498A 2009-09-17 2010-09-15 Dispositif pour obtenir des signaux angulaires Withdrawn EP2478336A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT14722009A AT508874B1 (de) 2009-09-17 2009-09-17 Vorrichtung zur gewinnung von winkelsignalen
PCT/EP2010/063528 WO2011032971A1 (fr) 2009-09-17 2010-09-15 Dispositif pour obtenir des signaux angulaires

Publications (1)

Publication Number Publication Date
EP2478336A1 true EP2478336A1 (fr) 2012-07-25

Family

ID=43063991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10754498A Withdrawn EP2478336A1 (fr) 2009-09-17 2010-09-15 Dispositif pour obtenir des signaux angulaires

Country Status (5)

Country Link
EP (1) EP2478336A1 (fr)
JP (1) JP2013505434A (fr)
CN (1) CN102597710A (fr)
AT (1) AT508874B1 (fr)
WO (1) WO2011032971A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102010061738A1 (de) * 2010-11-22 2012-04-26 Baumer Innotec Ag Verfahren und Inkrementalwertgeber zur Bestimmung einer Istlage eines Körpers entlang eines Messweges mit einer wenigstens eine Lücke aufweisenden Maßverkörperung
EP3026438B8 (fr) * 2013-07-23 2020-11-18 Kyoto Electronics Manufacturing Co., Ltd. Dispositif de détection de vitesse de rotation, dispositif de mesure de la viscosité comportant le dispositif et procédé de détection de vitesse de rotation
CN104296788A (zh) * 2014-10-29 2015-01-21 长城汽车股份有限公司 相位检测系统
JP6735045B2 (ja) * 2016-08-02 2020-08-05 いすゞ自動車株式会社 回転体の回転速度情報補正装置、及び回転速度情報補正プログラム
CN106290960A (zh) * 2016-08-30 2017-01-04 苏州品诺维新医疗科技有限公司 一种手术器械的刀头转速确定装置及方法
WO2018107342A1 (fr) * 2016-12-12 2018-06-21 华为技术有限公司 Encodeur optique à déplacement angulaire réfléchissant
DE102017000869A1 (de) 2017-01-31 2018-08-02 Linde Aktiengesellschaft Positionieranordnung und Verfahren
CN108357985A (zh) * 2018-01-26 2018-08-03 贵州钢绳股份有限公司 一种定位纸及其在胎圈钢丝卷绕中的应用
CN109945819B (zh) * 2019-04-08 2020-09-08 中国科学院电工研究所 一种永磁同步电机转子位置测量方法
DE102019128507A1 (de) * 2019-10-22 2021-04-22 Audi Ag Drehzahl- und Axialwegerfassung an einer sich drehenden Welle

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DE3623449A1 (de) * 1986-07-11 1988-01-14 Siemens Ag Anordnung zur gewinnung von winkelsignalen
JPH067056B2 (ja) * 1988-04-06 1994-01-26 日本ビクター株式会社 位置及び速度検出装置
DE19628765B4 (de) * 1996-07-17 2007-04-05 Braun, Paul-Wilhelm, Dipl.-Ing. Verfahren und Vorrichtung zur Positionsbestimmung von nicht-geradlinig bewegten, insbesondere rotierenden Maschinenteilen
AUPP482598A0 (en) * 1998-07-24 1998-08-13 Bishop Innovation Pty Limited Angle encoder
DE19956833B4 (de) * 1999-11-12 2009-04-23 Dr. Johannes Heidenhain Gmbh Winkelmeßsystem
WO2001038885A1 (fr) * 1999-11-24 2001-05-31 Crane Nuclear, Inc. Moniteur de vitesse angulaire
AT410372B (de) * 2000-11-30 2003-04-25 Rsf Elektronik Gmbh Winkelmesssystem
AT4976U1 (de) * 2001-05-17 2002-01-25 Avl List Gmbh Markenscheibe für einen drehwinkelaufnehmer, winkelaufnehmer für rotierende bauteile sowie verfahren zur ermittlung eines referenzwertes
JP2003270258A (ja) * 2002-03-13 2003-09-25 Koyo Seiko Co Ltd センサー付き軸受ユニット
EP1612563A3 (fr) * 2001-09-11 2009-12-09 JTEKT Corporation Anneau d'impulsion aimanté
DE102004060336A1 (de) * 2004-12-15 2006-07-06 Siemens Ag Geberrad mit Rückdrehcodierung für einen Kurbelwellen- oder Nockenwellensensor
JP2007003505A (ja) * 2005-05-23 2007-01-11 Fuji Electric Holdings Co Ltd 光学式リニアエンコーダ

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Title
See references of WO2011032971A1 *

Also Published As

Publication number Publication date
CN102597710A (zh) 2012-07-18
AT508874B1 (de) 2012-03-15
AT508874A1 (de) 2011-04-15
WO2011032971A1 (fr) 2011-03-24
JP2013505434A (ja) 2013-02-14

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