WO2010003845A1 - Drehgeber und baureihe von drehgebern - Google Patents
Drehgeber und baureihe von drehgebern Download PDFInfo
- Publication number
- WO2010003845A1 WO2010003845A1 PCT/EP2009/058147 EP2009058147W WO2010003845A1 WO 2010003845 A1 WO2010003845 A1 WO 2010003845A1 EP 2009058147 W EP2009058147 W EP 2009058147W WO 2010003845 A1 WO2010003845 A1 WO 2010003845A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotary encoder
- housing
- shaft
- stator
- rotor
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims abstract description 26
- 238000010168 coupling process Methods 0.000 claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 claims abstract description 26
- 230000003321 amplification Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/02—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation
- G01D3/022—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for altering or correcting the law of variation having an ideal characteristic, map or correction data stored in a digital memory
-
- 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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
-
- 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
- G01D5/2451—Incremental encoders
-
- 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
- G01D5/249—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 pulse code
- G01D5/2497—Absolute encoders
Definitions
- the invention relates to a rotary encoder with a housing according to claim 1 and a series of encoders according to claim 8.
- Rotary encoders are used to measure rotational movements of a rotatably mounted body, in particular a shaft, over one or more revolutions. The rotational movement is detected incrementally or absolutely. In conjunction with gear racks and gear wheels or with threaded spindles, linear movements can also be measured with a rotary encoder.
- Rotary encoders are used in large numbers as so-called motor feedback devices and serve in this application to form position or angle information which is used for the commutation of electric drives.
- synchronous motors require information about the absolute rotor position immediately after switching on the supply voltage.
- the rotary encoders are suitable for this purpose with additional commutation signals - they provide relatively coarse position information - and the absolute encoders in single or multiturn design, which immediately output the exact angular position with accuracy of only a few seconds.
- the rotor of the electric motor, or its shaft is first brought into a preferred position by applying direct current for this purpose.
- Rotary encoders with commutation signals are then roughly aligned, eg with the aid of marking marks on the encoder or a reference mark signal.
- the shaft of the rotary encoder is mounted on the electric motor shaft.
- the fine adjustment takes place with the help of a phase angle measuring device, wherein the stator of the rotary encoder is rotated until the phase angle meter displays approximately zero as the distance to a reference mark.
- a compensating coupling in particular a stator coupling, finally be fixed to the motor housing.
- Absolute encoders are first completely assembled. After that, the preferred position of the electric motor is assigned the value "zero" via a zero offset, using electronics as an aid, including an associated software package, for example in a computer connected to the rotary encoder.
- the invention has for its object to provide a rotary encoder of the type mentioned, which is attachable with simple means and by a comparatively high measurement accuracy can be achieved.
- This object is achieved by the provision of a rotary encoder with the features of claim 1 and a series according to claim 8.
- the rotary encoder comprises a stator and a rotor, wherein the rotor is rotatably mounted by means of a bearing relative to the stator.
- the rotor has a shaft on which a form-locking device and a code disk are fastened in a rotationally fixed manner.
- the stator has a body, a compensating coupling and a housing.
- the body comprises a scanning device for scanning the code disk, so that angle values can be output by the rotary encoder as a function of the relative angular position between the shaft and the housing.
- the body is radially and axially elastic but torsionally rigid connected via the compensating coupling with the housing.
- the housing also has a further positive locking device, wherein the rotary encoder is pre-adjusted so that a predetermined angle value can be output by the rotary encoder during operation of the rotary encoder at a predetermined relative angular position between the form-locking device of the shaft and the other form-locking device of the housing.
- the rotary encoder thus always outputs the same predetermined angle value with a predetermined orientation of the positive locking device of the shaft relative to the further positive locking device of the housing.
- this orientation is referred to here as a predetermined relative angular position.
- the encoder due to the Form gleich Anlagenen only referential faithful, z. B. with respect to the commutation signals, attachable to an electric motor.
- the predetermined angle value can also be referred to as the reference value.
- the code disk carries an absolute coding, so that an absolute and unique angular position within one revolution of the code disk can be detected by the scanning device.
- the stator comprises a non-volatile memory in which, according to the pre-adjustment, data are stored which represent information about the relative angular position of the two form-fitting devices relative to one another.
- the housing has a flange, wherein the form-fitting device can be arranged on the flange.
- the form-fitting device of the housing is designed as a dowel pin.
- the form-locking device of the shaft is designed as a component asymmetrical with respect to the axis.
- a unique combination with a counterpart, for example, an electric motor shaft can be ensured.
- the form-fitting device of the shaft can in particular have recesses which are formed, for example, as recesses in the axial direction.
- the code disk may carry an incremental coding.
- the compensating coupling may be configured so that the pre-adjustment of the relative angular position between the form-fitting devices by relative movement between the compensating coupling and the body and / or between the compensating coupling and the housing is feasible.
- the compensating coupling may have elongated holes for fastening the compensating coupling on the housing with screws.
- the invention includes a series of encoders.
- each rotary encoder of the series is pre-adjusted so that one and the same predetermined angle value can be output by the rotary encoder during operation of the respective rotary encoder at one and the same relative angular position between the respective form-locking device of the shaft and the respective further form-locking device of the respective housing.
- different data corresponding to the pre-adjustment, can then be stored in the respective nonvolatile memory of encoders within the series, which represent information about the relative angular position of the two form-fitting devices relative to one another.
- the rotary encoders may comprise form-locking devices of the shaft which are angularly oriented in each case the same relative to the code disk.
- the series may comprise rotary encoders which have one or more of the encoder features disclosed herein.
- FIG. 1 shows a perspective sectional view of a rotary encoder
- Figure 3 is a side view of the encoder.
- the rotary encoder shown in Figures 1 to 3 consists of a stator 1, a rotor 2 and a bearing 3.
- the rotor 2 with the aid of the bearing 3 relative to the stator 1 is arranged rotatably about an axis A.
- the rotary encoder is used to generate commutation signals for an electric motor to which the rotary encoder can be flanged.
- the stator comprises a body 1.1 lying inside, on which, inter alia, a scanning device 1.1 1 is fixed.
- the scanning device 1.11 comprises a printed circuit board with detectors, for example photodetectors.
- electrical components for signal shaping - for example, for amplification and digitization - arranged by the detectors scanning signals.
- an electronic component which comprises a non-volatile memory is also mounted on the printed circuit board.
- a cap-shaped housing 1.3 Around the body 1.1 around a cap-shaped housing 1.3 is arranged, which hermetically seals the internal components of the encoder against external influences. Such rotary encoders are often used in comparatively rough industrial environments, which is why it is important that the corresponding housing 1.3 surrounds the interior of the rotary encoder tight.
- a dowel pin 1.31 On the housing 1.3, or on a flange 1.32 of the housing 1.3, a dowel pin 1.31 is arranged, which serves as a form-locking device.
- a compensating coupling 1.2 By means of a compensating coupling 1.2, the body 1.1 is axially and radially elastically connected to the housing 1.3.
- the compensating coupling 1.2 is nevertheless constructed so that it is stiff in the circumferential direction.
- the compensation coupling 1.2 has holes for fastening with screws on the housing 1.3.
- an electrical coupling 1.4 is mounted on the housing 1.3.
- temperature signals are also forwarded to the subsequent electronics.
- the corresponding temperature sensors, z. B. resistance sensor are placed in the electric motor, wherein the generated temperature signals by means of a cable 1.5, which is passed through the stator 1, are transmitted.
- the rotor 2 is associated with a shaft 2.1 for connection to a motor shaft 4. Both the shaft 2.1 and the motor shaft 4 have positive locking devices 2.1 1, 4.1, which in each case rotatably connected to the shaft 2.1 and the motor shaft 4 are connected.
- On the shaft 2.1 is still a code disc 2.2 rotatably fixed.
- the code disk 2.2 is thus rotatable about the axis A and is in the example shown photoelectric by the Scanning 1.1 1.1 scanned.
- the code disk 2.2 carries an absolute coding, so that an absolute and unique angular position within one revolution of the code disk 2.2 is detected by the scanning device 1.1 1.
- the manufacturer of the rotary encoder first presses the dowel pin 1.31 into a corresponding bore of the flange 1.32.
- a rotationally fixed connection between a form-fitting part 2.1 1 as a form-fitting device and the shaft 2.1 is produced by a press fit.
- the form-fitting part 2.1 here a precisely manufactured metal part, has two differently wide recesses 2.11 1, 2.112 so that it is asymmetrical with respect to the axis A, ie not point-symmetrical to a point on the axis A.
- the rotary encoder with flange 1.32 is first mounted on an auxiliary device.
- the auxiliary device comprises a bore, in which the dowel pin 1.31 is pressed free of play.
- an adjusting device engages in the recesses 2.11 1, 2.112 without play, so that the adjusting device can initiate a rotational movement in the shaft 2.1.
- an angle-faithful assembly of the encoder is ensured on the auxiliary device.
- the adjusting device is rotated until a predetermined relative angular position between the form-fitting part 2.11 and the dowel pin 1.31 is present. For example, when a position is reached, in which the radial axis of symmetry of the recesses 2.111, 2.112, the center of the dowel pin 1.31 cuts. In this position, which can be approached very exactly at the manufacturer, z. B. to ⁇ 0.25 °, the absolute angular position is determined and, if appropriate, a corresponding angle value via the electrical coupling 1.4 output from the rotary encoder.
- This data which contains the information about the relative angular position between the form-fitting part 2.1 1 and the Matching pin 1.31 represent each other, are stored in the non-volatile memory as a reference value and taken into account in the subsequent operation of the encoder. All encoders of a series are referenced using the same method. Due to the fact that manufacturing tolerances exist for each rotary encoder within a series, different individual data can be stored in the respective non-volatile memory after the individual pre-adjustment in each rotary encoder.
- the dowel pin 1.31 When mounting the rotary encoder in the field, the dowel pin 1.31 is pressed into a correspondingly prepared precise hole in the electric motor housing.
- the form-fitting part 2.11 on the shaft 2.1 is introduced into a form-locking device 4.1 on the motor shaft 4 with the aid of the screw 2.3. Due to the asymmetrical configuration, the shaft 2.1 and the motor shaft 4 can be brought into engagement only in a predetermined angular position.
- the form-fitting part 2.1 1 and the form-locking device 4.1 then engage in one another without play. Through the screw connection between the shaft 2.1 and the motor shaft 4 is made a rigid connection.
- the rotary encoder ensures that at a certain angular position, here, for example, in the position in which the radial axis of symmetry of the recesses 2.11 1, 2.112 cuts the center of the dowel 1.31, always the reference value is output to the subsequent electronics, so that a very precise Commutation of the electric motor is achieved.
- rotary encoders of the same series can be exchanged in the field without any adjustment measures, because all encoders have stored a corresponding correction position in their non-volatile memory.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Technology Law (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09780014A EP2326921B1 (de) | 2008-07-10 | 2009-06-30 | Drehgeber und baureihe von drehgebern |
AT09780014T ATE529725T1 (de) | 2008-07-10 | 2009-06-30 | Drehgeber und baureihe von drehgebern |
US13/000,785 US8146259B2 (en) | 2008-07-10 | 2009-06-30 | Rotary encoder and series of rotary encoders |
JP2011517087A JP5328909B2 (ja) | 2008-07-10 | 2009-06-30 | 回転トランスデューサー |
CN200980127829.5A CN102089629B (zh) | 2008-07-10 | 2009-06-30 | 旋转编码器和旋转编码器的产品系列 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008032419.1 | 2008-07-10 | ||
DE102008032419A DE102008032419A1 (de) | 2008-07-10 | 2008-07-10 | Drehgeber und Baureihe von Drehgebern |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010003845A1 true WO2010003845A1 (de) | 2010-01-14 |
Family
ID=41258146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/058147 WO2010003845A1 (de) | 2008-07-10 | 2009-06-30 | Drehgeber und baureihe von drehgebern |
Country Status (7)
Country | Link |
---|---|
US (1) | US8146259B2 (de) |
EP (1) | EP2326921B1 (de) |
JP (1) | JP5328909B2 (de) |
CN (1) | CN102089629B (de) |
AT (1) | ATE529725T1 (de) |
DE (1) | DE102008032419A1 (de) |
WO (1) | WO2010003845A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB201100190D0 (en) * | 2011-01-07 | 2011-02-23 | Rls Merlina Tehnika D O O | Encoder readhead apparatus |
US8726529B2 (en) * | 2012-03-27 | 2014-05-20 | Cnh Industrial America Llc | Rotary sensor assembly |
CN104655161B (zh) | 2013-11-21 | 2017-05-10 | 科沃斯机器人股份有限公司 | 测距装置及其寻找测距起始点的方法 |
CN105203067A (zh) * | 2014-06-25 | 2015-12-30 | 天津海科信达石油技术有限公司 | 桩腿齿条相位传感器 |
JP6499532B2 (ja) * | 2015-06-30 | 2019-04-10 | ファナック株式会社 | 吸湿剤の吸湿量を取得する機能を備えた回転エンコーダ |
EP3945291A1 (de) * | 2020-07-27 | 2022-02-02 | Siemens Aktiengesellschaft | Befestigungselement, insbesondere drehmomentstütze, und maschine |
CN112412998A (zh) * | 2020-10-04 | 2021-02-26 | 黄伟岳 | 双层编码器 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3537235A1 (de) * | 1985-10-19 | 1987-04-23 | Stegmann Uhren Elektro | Justiervorrichtung fuer winkelschrittgeber |
DE3427709C1 (de) * | 1984-07-27 | 1989-11-02 | Max Stegmann GmbH, Uhren- und Elektroapparatefabrik, 7710 Donaueschingen | Justiervorrichtung fuer Winkelschrittgeber |
EP0533973A1 (de) * | 1991-09-25 | 1993-03-31 | Dr. Johannes Heidenhain GmbH | Winkelmessvorrichtung |
GB2314139A (en) * | 1996-06-13 | 1997-12-17 | Michael Smith | Shaft encoder with adjustable backlash compensation |
DE29623537U1 (de) * | 1995-09-06 | 1998-12-10 | Dr. Johannes Heidenhain Gmbh, 83301 Traunreut | Winkelmeßeinrichtung |
DE19806661A1 (de) * | 1998-02-18 | 1999-08-19 | Hengstler Gmbh | Statorkupplung |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0453515U (de) * | 1990-09-10 | 1992-05-07 | ||
JPH07170696A (ja) * | 1993-12-13 | 1995-07-04 | Nikon Corp | エンコーダ付きサーボモータ |
DE19629585C2 (de) | 1995-09-06 | 1998-12-10 | Heidenhain Gmbh Dr Johannes | Winkelmeßeinrichtung |
DE59510876D1 (de) * | 1995-09-06 | 2004-04-22 | Heidenhain Gmbh Dr Johannes | Winkelmesseinrichtung |
JP3168451B2 (ja) * | 1995-09-24 | 2001-05-21 | 株式会社トプコン | ロータリーエンコーダ |
DE29612584U1 (de) * | 1996-07-20 | 1996-10-31 | Dr. Johannes Heidenhain Gmbh, 83301 Traunreut | Adapterbauteil |
JP2003092859A (ja) * | 2001-09-20 | 2003-03-28 | Yaskawa Electric Corp | Acサーボモータ用エンコーダのポール合わせ方法 |
DE10316870A1 (de) * | 2003-04-11 | 2004-10-21 | Dr. Johannes Heidenhain Gmbh | Positionsmesseinrichtung |
US7385389B2 (en) * | 2005-04-19 | 2008-06-10 | Mitutoyo Corporation | Absolute rotary encoder and micrometer |
DE102006043897A1 (de) * | 2006-09-19 | 2008-03-27 | Siemens Ag | Wellenkupplung |
DE102006044359A1 (de) * | 2006-09-20 | 2008-04-03 | Dr. Johannes Heidenhain Gmbh | Winkelmesssystem und Verfahren zu dessen Herstellung |
DE102006056462A1 (de) * | 2006-11-28 | 2008-05-29 | Dr. Johannes Heidenhain Gmbh | Drehgeber |
DE102008036377A1 (de) * | 2008-08-05 | 2010-02-11 | Continental Teves Ag & Co. Ohg | Winkelsensoranordnung |
EP2306156B1 (de) * | 2009-10-01 | 2012-12-12 | SICK STEGMANN GmbH | Codierer |
-
2008
- 2008-07-10 DE DE102008032419A patent/DE102008032419A1/de not_active Withdrawn
-
2009
- 2009-06-30 AT AT09780014T patent/ATE529725T1/de active
- 2009-06-30 EP EP09780014A patent/EP2326921B1/de active Active
- 2009-06-30 US US13/000,785 patent/US8146259B2/en not_active Expired - Fee Related
- 2009-06-30 WO PCT/EP2009/058147 patent/WO2010003845A1/de active Application Filing
- 2009-06-30 JP JP2011517087A patent/JP5328909B2/ja active Active
- 2009-06-30 CN CN200980127829.5A patent/CN102089629B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3427709C1 (de) * | 1984-07-27 | 1989-11-02 | Max Stegmann GmbH, Uhren- und Elektroapparatefabrik, 7710 Donaueschingen | Justiervorrichtung fuer Winkelschrittgeber |
DE3537235A1 (de) * | 1985-10-19 | 1987-04-23 | Stegmann Uhren Elektro | Justiervorrichtung fuer winkelschrittgeber |
EP0533973A1 (de) * | 1991-09-25 | 1993-03-31 | Dr. Johannes Heidenhain GmbH | Winkelmessvorrichtung |
DE29623537U1 (de) * | 1995-09-06 | 1998-12-10 | Dr. Johannes Heidenhain Gmbh, 83301 Traunreut | Winkelmeßeinrichtung |
GB2314139A (en) * | 1996-06-13 | 1997-12-17 | Michael Smith | Shaft encoder with adjustable backlash compensation |
DE19806661A1 (de) * | 1998-02-18 | 1999-08-19 | Hengstler Gmbh | Statorkupplung |
Also Published As
Publication number | Publication date |
---|---|
ATE529725T1 (de) | 2011-11-15 |
EP2326921B1 (de) | 2011-10-19 |
US8146259B2 (en) | 2012-04-03 |
CN102089629A (zh) | 2011-06-08 |
EP2326921A1 (de) | 2011-06-01 |
DE102008032419A1 (de) | 2010-01-14 |
JP5328909B2 (ja) | 2013-10-30 |
US20110094115A1 (en) | 2011-04-28 |
JP2011527423A (ja) | 2011-10-27 |
CN102089629B (zh) | 2013-02-06 |
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