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WO1989004461A1 - Procede de determination de l'angle de rotation d'un enroulement electrique - Google Patents

Procede de determination de l'angle de rotation d'un enroulement electrique Download PDF

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Publication number
WO1989004461A1
WO1989004461A1 PCT/EP1988/000996 EP8800996W WO8904461A1 WO 1989004461 A1 WO1989004461 A1 WO 1989004461A1 EP 8800996 W EP8800996 W EP 8800996W WO 8904461 A1 WO8904461 A1 WO 8904461A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor winding
field strength
vector
winding
strength vector
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.)
Ceased
Application number
PCT/EP1988/000996
Other languages
German (de)
English (en)
Inventor
Gunter Schulze
Norbert Normann
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.)
Doduco Solutions GmbH
Original Assignee
Doduco GmbH and Co KG Dr Eugen Duerrwaechter
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 Doduco GmbH and Co KG Dr Eugen Duerrwaechter filed Critical Doduco GmbH and Co KG Dr Eugen Duerrwaechter
Publication of WO1989004461A1 publication Critical patent/WO1989004461A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • G01D5/14—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
    • G01D5/20—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 inductance, e.g. by a movable armature
    • G01D5/204—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 inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
    • G01D5/2073—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 inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by movement of a single coil with respect to two or more coils
    • G01D5/208—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 inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by movement of a single coil with respect to two or more coils using polyphase currents
    • 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

Definitions

  • This time period is directly proportional to the current angle of rotation position of the rotor winding in relation to the predetermined angle of rotation position of the field strength vector of the rotating field.
  • the positive zero crossing of the AC voltage is understood here to mean that zero crossing at which the sign of the AC voltage changes from negative to positive; Accordingly, the negative zero crossing is understood to mean that at which the sign, the alternating voltage, changes from positive to negative.
  • the period of time to be measured is ended either only by the positive or only by the negative zero crossing of the induced alternating voltage in order to rule out a 180 ° ambiguity in the determination of the angle of rotation position.
  • the time period is measured digitally by feeding a sequence of electrical pulses into an electronic counter which is started by a signal derived from the first zero crossing and stopped by a signal derived from the second zero crossing becomes.
  • the frequency of the pulse train, with the aid of which the respective period of time is measured must of course be large compared to the frequency of the alternating currents fed into the stator windings.
  • the rotating magnetic field vector suddenly stops for the duration of a field period and is modulated cosine in this fixed angular position.
  • the magnetic field amplitude seen by the rotor winding is evaluated at this stage with the cosine of the angle difference between the field strength vector and the surface-normal vector (direction of the main axis of the rotor winding located inside the rotor winding) of the rotor winding.
  • the alternating current to the stator winding whose magnetic field vector is at an angle of less than 45 ° with the surface normal is expediently interrupted
  • the magnetic field amplitude which acts on the rotor winding, then has a maximum variation of 1: 0.707, which is practically irrelevant for the measurement accuracy when determining the purely electrical phase shift.
  • a preloadable up counter 16 is also provided. It could be a counter that has the same capacity as the position counter 9 and the output counter 15; but it can also have a lower capacity For example, position counter 9 and output counter 15 can have a capacity of 14 bits, while up counter 16 can only have a capacity of 10 bits.
  • the up counter does not overflow before the position counter 9 transmits the next measured angle of rotation position to the output counter 15, and no extrapolated intermediate values are output.
  • the microprocessor can calculate the angular acceleration from successive rotational speed measurements and correct the extrapolated angle values as a function of the angular acceleration as long as the angular acceleration does not exceed a maximum value. Since the count of the output counter 15 is either increased or decreased depending on the direction of rotation of the rotor by the overflow impulses coming from the up counter, the direction of rotation can also be displayed by a further display device 18.
  • the alternating current fed into the stator winding 1 fails once per second for the duration of a period and takes over the then measured value of the time period as a correction value in a memory of the microprocessor 11.
  • the stored correction value is subtracted from the then measured time periods. This can be done simply by entering the correction value with the correct sign as a preload value in the position counter 9.
  • the microprocessor compares the rotation speeds determined before and after the measurement of the correction value and rejects the measurement value if they do not match.
  • the microprocessor calculates according to the formula if the rotation speed remains the same

Landscapes

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

Abstract

On détermine l'angle de rotation d'un enroulement électrique rotatif (enroulement rotorique 3) en générant un champ magnétique rotatif à l'endroit de l'enroulement rotorique (3) dont le vecteur d'intensité de champ tourne à une vitesse élevée par rapport à la vitesse de rotation de l'enroulement rotorique (3), puis en mesurant le temps écoulé entre le passage du vecteur d'intensité de champ par une position angulaire prédéterminée et le prochain passage positif ou négatif par zéro du courant alternatif qui s'écoule dans l'enroulement rotorique (3) suite à l'induction magnétique. A des intervalles, on interrompt la rotation du vecteur d'intensité de champ pendant une courte durée à cette position angulaire prédéterminée; pendant cette courte durée, on laisse l'amplitude de l'intensité du champ osciller sinusoïdalement ou cosinusoïdalement avec la fréquence angulaire du vecteur en rotation d'intensité de champ, on mesure le temps écoulé jusqu'au prochain passage par zéro du courant alternatif qui s'écoule dans l'enroulement rotorique (3), on enregistre la valeur de mesure ainsi obtenue en tant que valeur de correction DELTAT et on la soustrait des valeurs de mesure obtenues par la suite pendant la rotation du vecteur d'intensité de champ, aussi longtemps qu'elle n'est pas remplacée par une valeur de correction déterminée de la même manière lors du prochain arrêt du vecteur d'intensité de champ.
PCT/EP1988/000996 1987-11-04 1988-11-03 Procede de determination de l'angle de rotation d'un enroulement electrique Ceased WO1989004461A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3737435.4 1987-11-04
DE19873737435 DE3737435A1 (de) 1987-11-04 1987-11-04 Verfahren zum bestimmen der drehwinkelstellung einer drehbahr gelagerten elektrischen wicklung

Publications (1)

Publication Number Publication Date
WO1989004461A1 true WO1989004461A1 (fr) 1989-05-18

Family

ID=6339761

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1988/000996 Ceased WO1989004461A1 (fr) 1987-11-04 1988-11-03 Procede de determination de l'angle de rotation d'un enroulement electrique

Country Status (2)

Country Link
DE (1) DE3737435A1 (fr)
WO (1) WO1989004461A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991008437A1 (fr) * 1989-11-28 1991-06-13 Doduco Gmbh + Co. Dr. Eugen Dürrwächter Procede de determination de la position de l'angle de rotation d'un enroulement electrique tournant et circuit pour l'application du procede
EP0400649A3 (fr) * 1989-05-31 1992-06-03 Dainippon Screen Mfg. Co., Ltd. Dispositif de conversion des unités pour une machine de mesure interferométrique à laser
EP2110644A4 (fr) * 2007-02-09 2013-12-25 Toshiba Machine Co Ltd Detecteur de difference de phase et detecteur de position rotationnelle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2835616A1 (fr) * 2013-08-09 2015-02-11 Ams Ag Dispositif de capteur de position pour déterminer une position d'un dispositif mobile

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381284A1 (fr) * 1977-02-16 1978-09-15 Aga Ab Indicateur de position electromecanique
WO1986000401A1 (fr) * 1984-06-26 1986-01-16 Fanuc Ltd Dispositif de detection de la position absolue

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3202339C2 (de) * 1982-01-26 1983-12-15 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Digitale elektrische Längen- oder Winkelmeßeinrichtung
JPS5954917A (ja) * 1982-09-24 1984-03-29 Toshiba Corp デイジタル移動検出装置
DE3409891C2 (de) * 1984-03-17 1986-04-17 Kuhnke, Falko, Dr., 3300 Braunschweig Verfahren zum Interpolieren von ortsperiodischen elektrischen Signalen
CH666348A5 (de) * 1984-04-12 1988-07-15 Heinz Rieder Verfahren zum auswerten von messsignalen, die durch abtastung eines inkrementalmassstabes mit einer abtasteinheit erhalten werden und messeinrichtung zur durchfuehrung dieses verfahrens.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2381284A1 (fr) * 1977-02-16 1978-09-15 Aga Ab Indicateur de position electromecanique
WO1986000401A1 (fr) * 1984-06-26 1986-01-16 Fanuc Ltd Dispositif de detection de la position absolue

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Industrie-Elektrik + Elektronik, Band 9, 30. Jahrgang 1985 O. Terne: "Der Dreh mit der Winkelmessung", Seiten 62-69 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0400649A3 (fr) * 1989-05-31 1992-06-03 Dainippon Screen Mfg. Co., Ltd. Dispositif de conversion des unités pour une machine de mesure interferométrique à laser
US5184313A (en) * 1989-05-31 1993-02-02 Dainippon Screen Mfg. Co., Ltd. Conversion device for laser interferometic measuring apparatus
WO1991008437A1 (fr) * 1989-11-28 1991-06-13 Doduco Gmbh + Co. Dr. Eugen Dürrwächter Procede de determination de la position de l'angle de rotation d'un enroulement electrique tournant et circuit pour l'application du procede
EP2110644A4 (fr) * 2007-02-09 2013-12-25 Toshiba Machine Co Ltd Detecteur de difference de phase et detecteur de position rotationnelle

Also Published As

Publication number Publication date
DE3737435A1 (de) 1989-05-24

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