AU2000240414A1 - Rotary encoder - Google Patents

Rotary encoder

Info

Publication number
AU2000240414A1
AU2000240414A1 AU2000240414A AU4041400A AU2000240414A1 AU 2000240414 A1 AU2000240414 A1 AU 2000240414A1 AU 2000240414 A AU2000240414 A AU 2000240414A AU 4041400 A AU4041400 A AU 4041400A AU 2000240414 A1 AU2000240414 A1 AU 2000240414A1
Authority
AU
Australia
Prior art keywords
read head
measurement pattern
strip
disk
position measurement
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.)
Abandoned
Application number
AU2000240414A
Other languages
English (en)
Inventor
Patrick H. Dwyer
Gordon R. Southam
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.)
Aim Controls Inc
Original Assignee
Aim Controls Inc
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 Aim Controls Inc filed Critical Aim Controls Inc
Publication of AU2000240414A1 publication Critical patent/AU2000240414A1/en
Abandoned 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
    • G01D5/34776—Absolute encoders with analogue or digital scales
    • G01D5/34792—Absolute encoders with analogue or digital scales with only digital scales or both digital and incremental scales
    • 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
    • G01D5/36—Forming the light into pulses
    • G01D5/38—Forming the light into pulses by diffraction gratings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Analogue/Digital Conversion (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Stepping Motors (AREA)
AU2000240414A 2000-03-28 2000-03-28 Rotary encoder Abandoned AU2000240414A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2000/008294 WO2001073379A1 (en) 2000-03-28 2000-03-28 Rotary encoder

Publications (1)

Publication Number Publication Date
AU2000240414A1 true AU2000240414A1 (en) 2001-10-08

Family

ID=21741210

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2000240414A Abandoned AU2000240414A1 (en) 2000-03-28 2000-03-28 Rotary encoder

Country Status (6)

Country Link
EP (1) EP1272817B1 (de)
AT (1) ATE458985T1 (de)
AU (1) AU2000240414A1 (de)
CA (1) CA2443768C (de)
DE (1) DE60043898D1 (de)
WO (1) WO2001073379A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2391302A (en) * 2002-06-13 2004-02-04 Graham Cyril Rumsey A system for the measurement of torque,vibration, balance and/or speed
US7385178B2 (en) 2005-10-26 2008-06-10 Avago Technologies Ecbu Ip Pte Ltd Reflective encoders with various emitter-detector configurations

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59224515A (ja) * 1983-06-03 1984-12-17 Mitsubishi Electric Corp 光学式エンコ−ダ
JPS6255511A (ja) * 1985-09-05 1987-03-11 Sharp Corp ロ−タリ−エンコ−ダ
NL8502679A (nl) * 1985-10-01 1987-05-04 Philips Nv Optisch omzetelement en verplaatsingsmeter voorzien van dit element.
DE68906290T2 (de) * 1988-02-22 1993-09-23 Victor Company Of Japan Detektorsystem mit einem optischen rotierenden kodierer zur feststellung der verschiebung einer beweglichen vorrichtung.
JP3098358B2 (ja) * 1992-11-27 2000-10-16 三菱電機株式会社 位置検出素子、その位置検出素子を用いた位置検出方法、および光学式ロータリーエンコーダ
US5699058A (en) * 1994-03-17 1997-12-16 Copal Company Limited Absolute encoder generating phase-shifted triangular waveforms to produce multi-bit signals
JP3530573B2 (ja) * 1994-04-27 2004-05-24 キヤノン株式会社 光学式変位センサ
US5844676A (en) * 1997-05-29 1998-12-01 Quadrant Engineering, Inc. Method and apparatus for measuring radial error of rotating encoded disks

Also Published As

Publication number Publication date
WO2001073379A1 (en) 2001-10-04
CA2443768C (en) 2007-11-20
ATE458985T1 (de) 2010-03-15
CA2443768A1 (en) 2001-10-04
EP1272817B1 (de) 2010-02-24
DE60043898D1 (de) 2010-04-08
EP1272817A1 (de) 2003-01-08

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