DE2654238A1 - Angle of rotation measuring circuit - uses HF triangular voltage supplies and scans contactless resistance ring - Google Patents

Angle of rotation measuring circuit - uses HF triangular voltage supplies and scans contactless resistance ring

Info

Publication number
DE2654238A1
DE2654238A1 DE19762654238 DE2654238A DE2654238A1 DE 2654238 A1 DE2654238 A1 DE 2654238A1 DE 19762654238 DE19762654238 DE 19762654238 DE 2654238 A DE2654238 A DE 2654238A DE 2654238 A1 DE2654238 A1 DE 2654238A1
Authority
DE
Germany
Prior art keywords
rotation
angle
triangular
resistance ring
ring
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Withdrawn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
DE19762654238
Other languages
German (de)
Inventor
Albrecht Broemme
Arno Dipl Ing Seitz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19762654238 priority Critical patent/DE2654238A1/en
Publication of DE2654238A1 publication Critical patent/DE2654238A1/en
Withdrawn legal-status Critical Current

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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
    • G01D5/14—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 the magnitude of a current or voltage
    • G01D5/16—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 the magnitude of a current or voltage by varying resistance
    • G01D5/165—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 the magnitude of a current or voltage by varying resistance by relative movement of a point of contact or actuation and a resistive track

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

The analogue linear directly proportional electromechanical transducer measures angles of rotation. It avoids nonlinearities associated with sinusoidal power supplies because of the relation between phase and rotation angles. The angle is measured by scanning a resistance ring using slip contacts. The ring is powdered from four triangular waveform voltage sources of equal amplitude, frequency, and resetime and shifted w.r.t. each other by ninety degrees. The supply voltages have sufficiently high frequency to enable contactless capacitive scanning.

Description

Analoger linearer direktpreportionaler @echanisch-elektrischerAnalogue linear direct proportional @ echanical-electrical

Drehwinkelgeber für un@ndlich@ Drehwinkel Bekanntes Der Stand der Technik weist eine Vielzahl von mechanischelektrisch arbeitenden Drshwinkelgebersystemen aus, welche jedoch im allgemeinen den zu bestimmenden Drehwinkel als einon Phasen-Amplituden-Wert darstellen, der aus sinusförmigen Speisespannungon drehwinkelabhängig gewennen wird. Hierbe@ wird die Verknüpfung zwischen mechanischem Drehwinkel und elektrischei Signal durch eine nichtlineare Winkelfunktion beschrieben.Rotary encoder for infinite rotation angles known The status of the Technology has a large number of mechanical-electrical working throttle angle sensor systems from which, however, generally the angle of rotation to be determined as a phase amplitude value which is obtained from the sinusoidal supply voltage depending on the angle of rotation. This is the link between the mechanical angle of rotation and the electrical signal described by a non-linear angle function.

Erfindungsgedanke Da die Be zehung zwischen Phasen- und Drehwinkel bei Verwendung von sinusförnigen Speisespannungen eine nichtlineare Winkeliunktion ergibt, wird die Sinuaspeisung (gemäß Skizze i) vermieden und an deren Stelle die Speisung des Widerstandsringes iit Dreieckspannungen vergenommen ( ( Skizze 2 ).Invention concept As the relationship between phase and rotation angle a non-linear angle function when using sinusoidal supply voltages results, the sinua feed (according to sketch i) is avoided and instead the Feeding of the resistance ring with triangular voltages recorded ((sketch 2).

Die zur Speisung des analogen linearen direktproportienalen mechanisch-elektrischen Drehwinkelgebers für unendliche Drehwinkel notwendigen Dreieckspannungen werden in einer Generat@rschaltung gesäß Skizze 3 erzeugt. Hierin synchronisi@rt ein Dreiecksgenerator einen zweiten Dreiecksgenerator so, daß dessen Phasenverschiebung in Bezug auf den ersten 90 beträgt. Zur Stabilisierung der Schaltung wird ein Teil der Ausgangsspannungen des zweiten Generators auf den ersten Generator so zurückgekoppelt, daß eine evenuell auftretende Tritt ii zweiten Dreieckgenerator ausgeregelt wird. Diese Dreieckspannungen lassen sich mit üblichen integrierten elektronischen Bauteilen vergleichsweise leichter darstellen als entsprechend genaue Sinusspannungen, insbesondere zur Speisung relativ niederohmiger Widerstandsringe.The one for feeding the analog linear direct proportional mechanical-electrical Angle of rotation encoder for infinite angles of rotation necessary triangular voltages generated in a generator circuit according to sketch 3. A triangular generator is synchronized here a second triangle generator so that its phase shift with respect to the first 90 is. Part of the output voltages is used to stabilize the circuit of the second generator is fed back to the first generator so that a possibly occurring step ii second triangle generator is regulated. These triangular voltages can be comparatively easier with conventional integrated electronic components represent as correspondingly accurate sinusoidal voltages, especially relative to the supply low resistance rings.

Als Drehwinkelkriterium tritt die Phasenverschiebung des pesitiven Nulldurchgangs der Ausgangsspannung am Achleifer, bezogen auf den entsprechenden Nulldurchgang der Dreieckspannung an eines der vier Speisepunkte, vorzugsweise Speisepunkt 1, aui. Mit bekannten Mitteln sind daraus beliebige Darstellungsferien zur Ausgabe des Drehwinkels herstellbar. Skizze 4 veranschaulicht eine beispielsweise erfindungsgemäße Anordnung.The phase shift of the positive occurs as a criterion for the angle of rotation Zero crossing of the output voltage on the axle wiper, based on the corresponding Zero crossing of the triangular voltage at one of the four feed points, preferably feed point 1, aui. With known means, any display holidays are available for output the angle of rotation can be produced. Sketch 4 illustrates an example according to the invention Arrangement.

Es bleibt vorbehalten, die ii Beispiel sowohl elektrischringförmig wie mechanisch-ringförmig derart abzuwandeln, daß die vier Widerstände mechanisch linear oder @@@ aui einer beliebigen Kurve angeordnet sind, während sie Jedech elektrisch nach wie vor im Kreis geschaltet sind und entsprechend gespeist werden. Sinngemäß erfolgt die Abtastung entlang der xeebanisehen Anordnung der Wider -stünde ( Skizze 5 ).It is reserved to the ii example both electrically ring-shaped how to modify it mechanically-ring-shaped in such a way that the four resistances are mechanically linear or @@@ aui any curve, while they Jedech electrically are still connected in a circle and are fed accordingly. Analogous the scanning takes place along the xeebani arrangement of the resistors (sketch 5).

L e e r s e i t eL e r s e i t e

Claims (1)

Patentansprüche Anspruch i Analoger linearer direktproportionaler mechanisch-elektrischer Drehwinkelgeber für unendliche Drehwinkel unter Benutzung eines Widerstandringes, welcher drehwinkelabhängig durch Schiebekontakt abgetastet wird, dadurch gekennzeichnet, daß zur Speisung des Widerstandsringes vier um je 90° phasenverschobene Dreieckspannungen mit gleicher Amplit@de, gleicher Frequenz und gleioben Steigungsmaß benutzt wird.Claims claim i Analog linear direct proportional mechanical-electrical angle encoder for infinite angles of rotation in use a resistance ring, which is scanned by a sliding contact depending on the angle of rotation is, characterized in that for feeding the resistance ring four to each 90 ° phase-shifted triangular voltages with the same amplitude, the same frequency and the same pitch is used. Anspruch 2 Angloger linearer direktproportionaler mechanisch-elektrischer Drehwinkelgeber für unendliche Drehwinkel gemäß Anspruch 1 , weiterhis dadurch gekennzeichnet, daß die Dreieckspannung so hochfrequent ist, daß berührungslose, kapazitive Abtastung ermöglicht wird.Claim 2 Angloger linear direct proportional mechanical-electrical Angle of rotation encoder for infinite angles of rotation according to claim 1, further characterized in that that the triangular voltage is so high that contactless, capacitive scanning is made possible. Anspruch 3 Analoger linearer direktproportionaler mechanisch-elektrischer Drehwinkelgeber für unendliche Drehwinkel nach einem oder mehreren der vorausgehenden Ansprüche, weiterhin dadurch gekennzeichnet, daß die Ringschaltung dex vier Widerstände zwar elektrisch als Ringschaltung geschaltet ist, mechanisch jedoch ein liseares oder beliebig geformtes Gebilde darstellt, auf welchem die Spannung abg@griffem wird.Claim 3 analog linear direct proportional mechanical-electrical Rotary angle encoder for infinite angles of rotation according to one or more of the preceding Claims, further characterized in that the ring circuit has four resistors Although it is electrically connected as a ring circuit, mechanically it is a lisear one or any shaped structure on which the tension was gripped will. Anspruch 4 Analoger linearer direktproportionaler mechanisch-elektrischer Drehwinkelgeber für unendliche Drehwinkel nach einem oder mehreren der vorausgegangenen Ansprüche, weiterhin dadurch gekennzeichnet, daß zwei Dreieckgenerateren zur Speisung des Widerstandsringes benutzt werden, dergestalt, daß die Phasenlage der Nulldurchgänge der beiden Dreieckgeneratoren durch Zwangsverkopplung der beiden Dreieckgeneratoren auf 90° Phasenverschiebung festgelegt ist und daß die mittlere arithmetische Spannung auf Null Volt geregelt ist.Claim 4 analog linear direct proportional mechanical-electrical Rotary encoder for infinite angles of rotation according to one or more of the preceding Claims, further characterized in that two triangular generators for feeding of the resistance ring are used in such a way that the phase position of the zero crossings of the two triangular generators by forced coupling of the two triangular generators is set to 90 ° phase shift and that the mean arithmetic voltage is regulated to zero volts.
DE19762654238 1976-11-30 1976-11-30 Angle of rotation measuring circuit - uses HF triangular voltage supplies and scans contactless resistance ring Withdrawn DE2654238A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19762654238 DE2654238A1 (en) 1976-11-30 1976-11-30 Angle of rotation measuring circuit - uses HF triangular voltage supplies and scans contactless resistance ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762654238 DE2654238A1 (en) 1976-11-30 1976-11-30 Angle of rotation measuring circuit - uses HF triangular voltage supplies and scans contactless resistance ring

Publications (1)

Publication Number Publication Date
DE2654238A1 true DE2654238A1 (en) 1978-06-01

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ID=5994293

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DE19762654238 Withdrawn DE2654238A1 (en) 1976-11-30 1976-11-30 Angle of rotation measuring circuit - uses HF triangular voltage supplies and scans contactless resistance ring

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2644247A1 (en) * 1989-03-13 1990-09-14 Peugeot IMPROVED POTENTIOMETRIC SENSOR
FR2684758A1 (en) * 1991-12-09 1993-06-11 Alcatel Satmam CLOSED CONTINUOUS RESISTIVE TRACK ANGLE POSITION SENSOR AND CORRESPONDING MEASUREMENT METHOD.
WO1993022621A1 (en) * 1992-04-24 1993-11-11 Aerospatiale Societe Nationale Industrielle Voltage modulation rotor/stator device particularly for brushless electric motor
FR2761795A1 (en) * 1997-04-07 1998-10-09 Crouzet Appliance Controls ANALOGUE ANGULAR ENCODER
WO2000063652A1 (en) * 1999-04-16 2000-10-26 Vishay Limited A position encoder

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2644247A1 (en) * 1989-03-13 1990-09-14 Peugeot IMPROVED POTENTIOMETRIC SENSOR
EP0389310A2 (en) * 1989-03-13 1990-09-26 Automobiles Peugeot Potentiometric sensor
EP0389310A3 (en) * 1989-03-13 1990-12-19 Automobiles Peugeot Potentiometric sensor
FR2684758A1 (en) * 1991-12-09 1993-06-11 Alcatel Satmam CLOSED CONTINUOUS RESISTIVE TRACK ANGLE POSITION SENSOR AND CORRESPONDING MEASUREMENT METHOD.
EP0546907A1 (en) * 1991-12-09 1993-06-16 Neopost Industrie Angular position sensor with continuous closed resistive track and measuring method therefore
US5399981A (en) * 1991-12-09 1995-03-21 Neopost Industrie Closed continuous resistive track angular position sensor and measurement method
WO1993022621A1 (en) * 1992-04-24 1993-11-11 Aerospatiale Societe Nationale Industrielle Voltage modulation rotor/stator device particularly for brushless electric motor
FR2692982A1 (en) * 1992-04-24 1993-12-31 Aerospatiale Voltage modulation rotor / stator device, especially for brushless electric motor.
US5479057A (en) * 1992-04-24 1995-12-26 Aerospatiale Societe Nationale Industrielle Rotor/stator voltage modulation device, in particular for a brushless electric motor
FR2761795A1 (en) * 1997-04-07 1998-10-09 Crouzet Appliance Controls ANALOGUE ANGULAR ENCODER
WO1998045666A1 (en) * 1997-04-07 1998-10-15 Crouzet Appliance Controls S.A. Analog angular coder
WO2000063652A1 (en) * 1999-04-16 2000-10-26 Vishay Limited A position encoder

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