KR20130138470A - 위치 측정 장치 및 위치 측정 방법 - Google Patents
위치 측정 장치 및 위치 측정 방법 Download PDFInfo
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- KR20130138470A KR20130138470A KR1020120062074A KR20120062074A KR20130138470A KR 20130138470 A KR20130138470 A KR 20130138470A KR 1020120062074 A KR1020120062074 A KR 1020120062074A KR 20120062074 A KR20120062074 A KR 20120062074A KR 20130138470 A KR20130138470 A KR 20130138470A
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- scale
- measurement signal
- phase
- signal
- measurement
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 53
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000000691 measurement method Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- 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
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- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Optical Transform (AREA)
Abstract
Description
도 2는 본 발명의 일 실시예에 따른 위치 측정 장치를 설명하는 도면이다.
도 3은 도 2를 자세히 설명한 도면이다.
도 4는 본 발명의 일 실시예에 따라 측정한 오차를 설명하는 도면이다.
220: 센서 어레이 230: 처리부 202: 거울
201: 레이저 간섭계
Claims (4)
- 증분형 스케일(incremental scale)에서 반사 또는 투과된 광을 상기 증분형 스케일의 한 주기 내에 60도의 위상 차이를 가지고 감지하여 측정신호를 생성하는 단계;
감지된 측정 신호를 기본 공간 주파수(fundamental spatial frequency)의 1차 정현파 및 3차 정현파의 합으로 표시하는 단계; 및
상기 측정 신호를 이용하여 1차 정현파의 위상을 추출하는 단계를 포함하는 것을 특징으로 하는 위치 측정 방법. - 증분형 스케일(incremental scale);
상기 스케일에서 반사 또는 투과된 광을 상기 증분형 스케일의 한 주기 내에 60도의 위상 차이를 가지고 감지하는 측정 신호를 제공하는 센서 어레이; 및
상기 센서 어레이의 감지된 측정 신호를 기본 공간 주파수(fundamental spatial frequency)의 1차 정현파 및 3차 정현파의 합으로 표시하고, 상기 측정 신호를 연산하여 1차 정현파의 위상을 추출하는 처리부를 포함하는 것을 특징으로 하는 위치 측정 장치.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120062074A KR101361625B1 (ko) | 2012-06-11 | 2012-06-11 | 위치 측정 장치 및 위치 측정 방법 |
Applications Claiming Priority (1)
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KR1020120062074A KR101361625B1 (ko) | 2012-06-11 | 2012-06-11 | 위치 측정 장치 및 위치 측정 방법 |
Publications (2)
Publication Number | Publication Date |
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KR20130138470A true KR20130138470A (ko) | 2013-12-19 |
KR101361625B1 KR101361625B1 (ko) | 2014-02-12 |
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KR1020120062074A KR101361625B1 (ko) | 2012-06-11 | 2012-06-11 | 위치 측정 장치 및 위치 측정 방법 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102082476B1 (ko) * | 2018-10-17 | 2020-02-27 | 한국표준과학연구원 | 2차원 절대 위치 측정 방법 및 절대 위치 측정 장치 |
KR20220120075A (ko) * | 2021-02-23 | 2022-08-30 | 한국표준과학연구원 | 이동형 3차원 정렬 좌표 제공 방법 및 좌표 측정 장치 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4713123B2 (ja) * | 2004-10-13 | 2011-06-29 | 株式会社ミツトヨ | エンコーダ出力信号補正装置 |
JP5562077B2 (ja) * | 2010-03-10 | 2014-07-30 | キヤノン株式会社 | 光学式エンコーダ、エンコーダ、干渉計測装置、計測方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102082476B1 (ko) * | 2018-10-17 | 2020-02-27 | 한국표준과학연구원 | 2차원 절대 위치 측정 방법 및 절대 위치 측정 장치 |
KR20220120075A (ko) * | 2021-02-23 | 2022-08-30 | 한국표준과학연구원 | 이동형 3차원 정렬 좌표 제공 방법 및 좌표 측정 장치 |
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