DE9422281U1 - Angle measuring device with several scanning points - Google Patents

Angle measuring device with several scanning points

Info

Publication number
DE9422281U1
DE9422281U1 DE9422281U DE9422281U DE9422281U1 DE 9422281 U1 DE9422281 U1 DE 9422281U1 DE 9422281 U DE9422281 U DE 9422281U DE 9422281 U DE9422281 U DE 9422281U DE 9422281 U1 DE9422281 U1 DE 9422281U1
Authority
DE
Germany
Prior art keywords
measuring device
angle measuring
scanning
units
eccentricity
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.)
Expired - Lifetime
Application number
DE9422281U
Other languages
German (de)
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.)
Dr Johannes Heidenhain GmbH
Original Assignee
Dr Johannes Heidenhain 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 Dr Johannes Heidenhain GmbH filed Critical Dr Johannes Heidenhain GmbH
Priority to DE9422281U priority Critical patent/DE9422281U1/en
Priority claimed from DE19944402401 external-priority patent/DE4402401C2/en
Publication of DE9422281U1 publication Critical patent/DE9422281U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01D5/244—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
    • G01D5/24471—Error correction
    • G01D5/24476—Signal processing
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (4)

1. Winkelmeßeinrichtung (1) mit einer um einen Drehpunkt (9) drehbaren Teilscheibe (2), die eine inkrementale Winkelteilung (3) mit dem Mit­ telpunkt (0) trägt und die von mehreren, am Um­ fang der Teilscheibe (2) angeordneten Abtastein­ heiten (5, 7; 6, 8) abgetastet wird, welche zu­ einander phasenverschobene Abtastsignale (5 s, 5 c, 7 s, 7 c; 6 s; 6 c; 8 s; 8 c) erzeugen, wobei der Mittelpunkt (0) der Winkelteilung (3) und der Drehpunkt (9) der Teilscheibe (2) zueinander um eine Exzentrizität (e) verlagert sind, welche bewirkt, daß die Winkelteilung (3) in jeder Winkelposition eine durch die Exzentrizität (e) bestimmte, eindeutig bestimmbare Absolutposition gegenüber den Abtasteinheiten (5, 7; 6, 8) auf­ weist.1. angle measuring device ( 1 ) with a pivot point ( 9 ) rotatable disc ( 2 ), which carries an incremental angular pitch ( 3 ) with the center point (0) and arranged by several, at the beginning of the disc ( 2 ) arranged scanning stone units ( 5 , 7 ; 6 , 8 ) are scanned, which generate mutually phase-shifted scanning signals ( 5 s , 5 c , 7 s , 7 c ; 6 s ; 6 c ; 8 s ; 8 c ), the center point (0 ) the angular pitch ( 3 ) and the pivot point ( 9 ) of the indexing plate ( 2 ) are displaced from one another by an eccentricity (e), which causes the angular pitch ( 3 ) in each angular position to be uniquely determined by the eccentricity (e) Absolute position relative to the scanning units ( 5 , 7 ; 6 , 8 ). 2. Winkelmeßeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Bestimmung der Absolut­ position der Winkelteilung (3) gegenüber den Abtasteinheiten (5, 7; 6, 8) in einer Auswerte­ einheit (10) mittels der relativen Phasenver­ schiebung der Abtastsignale (5 s, 6 s, 7 s, 8 s oder 5 c, 6 c; 7 c; 8 c) zueinander erfolgt, aus der wenigstens ein resultierendes Signal gewonnen wird, welches die Lage der Exzentrizität (e) repräsentiert. 2. Angle measuring device according to claim 1, characterized in that the determination of the absolute position of the angular division ( 3 ) relative to the scanning units ( 5 , 7 ; 6 , 8 ) in an evaluation unit ( 10 ) by means of the relative phase shift of the scanning signals ( 5 s , 6 s , 7 s , 8 s or 5 c , 6 c ; 7 c ; 8 c ) to each other, from which at least one resulting signal is obtained, which represents the position of the eccentricity (e). 3. Winkelmeßeinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das resultierende Signal derart interpoliert wird, daß dessen Interpola­ tionsschritte der Periode der inkrementalen Ab­ tastsignale (5 s, 6 s, 7 s, 8 s oder 5 c, 6 c; 7 c; 8 c) entsprechen und synchron an diese angeschlossen werden können.3. Angle measuring device according to claim 2, characterized in that the resulting signal is interpolated such that its interpola tion steps of the period of the incremental scanning signals ( 5 s , 6 s , 7 s , 8 s or 5 c , 6 c ; 7 c ; 8 c ) correspond and can be connected to them synchronously. 4. Winkelmeßeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Abtasteinheiten (5, 7; 6, 8) zwei Gruppen (5, 7) und (6, 8) bilden, von denen sich die Abtasteinheiten einer jeden Grup­ pe (5, 7 bzw. 6, 8) jeweils diametral gegenüber­ liegen und die Gruppen (5, 7; 6, 8) zueinander einen rechten Winkel einschließen.4. Angle measuring device according to claim 1, characterized in that the scanning units ( 5 , 7 ; 6 , 8 ) form two groups ( 5 , 7 ) and ( 6 , 8 ), of which the scanning units of each group pe ( 5 , 7 6 , 8 ) are diametrically opposite and the groups ( 5 , 7 ; 6 , 8 ) form a right angle to each other.
DE9422281U 1994-01-27 1994-01-27 Angle measuring device with several scanning points Expired - Lifetime DE9422281U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9422281U DE9422281U1 (en) 1994-01-27 1994-01-27 Angle measuring device with several scanning points

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944402401 DE4402401C2 (en) 1994-01-27 1994-01-27 Angle measuring device with several scanning points
DE9422281U DE9422281U1 (en) 1994-01-27 1994-01-27 Angle measuring device with several scanning points

Publications (1)

Publication Number Publication Date
DE9422281U1 true DE9422281U1 (en) 1999-09-23

Family

ID=25933314

Family Applications (1)

Application Number Title Priority Date Filing Date
DE9422281U Expired - Lifetime DE9422281U1 (en) 1994-01-27 1994-01-27 Angle measuring device with several scanning points

Country Status (1)

Country Link
DE (1) DE9422281U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2278277B1 (en) * 2009-07-10 2020-01-01 Mitutoyo Corporation Error calculation method for angle detection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2278277B1 (en) * 2009-07-10 2020-01-01 Mitutoyo Corporation Error calculation method for angle detection device

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