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DE2935525A1 - Electronic multiple phase DC tachogenerator arrangement - uses AC tachogenerator with phase sensitive amplifier and changeover circuit - Google Patents

Electronic multiple phase DC tachogenerator arrangement - uses AC tachogenerator with phase sensitive amplifier and changeover circuit

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Publication number
DE2935525A1
DE2935525A1 DE19792935525 DE2935525A DE2935525A1 DE 2935525 A1 DE2935525 A1 DE 2935525A1 DE 19792935525 DE19792935525 DE 19792935525 DE 2935525 A DE2935525 A DE 2935525A DE 2935525 A1 DE2935525 A1 DE 2935525A1
Authority
DE
Germany
Prior art keywords
phase
tachogenerator
electronic
change
rotation
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Withdrawn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
DE19792935525
Other languages
German (de)
Inventor
Hans Dieter 7121 Gemmrigheim Layh
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 DE19792935525 priority Critical patent/DE2935525A1/en
Publication of DE2935525A1 publication Critical patent/DE2935525A1/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00Indicating or recording presence, absence, or direction, of movement
    • G01P13/02Indicating direction only, e.g. by weather vane
    • G01P13/04Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • G01P13/045Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42Devices characterised by the use of electric or magnetic means
    • G01P3/44Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G01P3/465Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage by using dynamo-electro tachometers or electric generator

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rectifiers (AREA)

Abstract

An electronic multiple phase d.c. tachogenerator overcomes the problems of high cost, large size, and brush wear associated with such devices. This is achieved by using electronic circuitry in conjunction with an a.c. tachogenerator to produce a voltage proportional to the revolution rate and whose sign is dependent on the direction of rotation. A phase sensitive amplifier connected after the rectifying circuit, which can be electrical or electronic, detects the change in phase resulting from the change in rotation direction. A signal corresp. to the change in phase is fed to a change-over circuit which reverses the rectified tachogenerator voltage. The polarity reversal can either be reversed by an electronic amplifier with phase inversion or a relay, e.g. a rapid reed relay.

Description

elektronischer Mehrphasen - Gleichstromtachoelectronic multiphase direct current tachometer

Für Regelmotoren aller Art werden in großem Umfange Tachogeneratoren eingesetzt. Dabei wird unterschieden zwischen ein- und mehrphasigen Wechsel- bzw Drehstromtachogeneratoren und Gleichstromtachogeneratoren.Tacho generators are used to a large extent for regulating motors of all types used. A distinction is made between single and multi-phase alternating or Three-phase tacho generators and DC tacho generators.

Der Wechsel- bzw. Drehstromtacho hat den Vorteil der ver -schleißlosen Arbeitsweise, d. h. in einem bewickelten Stator dreht sich berührungslos ein Magnet und induziert dort Spannungen.The AC or three-phase speedometer has the advantage of being non-wearing Working method, d. H. A magnet rotates without contact in a wound stator and induces tensions there.

Dieser Tachogenerator wird dort eingesetzt, wo keine übergrossen Regelbereiche erforderlich sind und keine Drehrichtungserkennung, d. h. eine Umkehr der abgegebenen gleichgerichteten Spannung bei Drehrichtungswechsel erforderlich ist.This tachometer generator is used where there are no oversized control ranges are required and no direction of rotation detection, d. H. a reversal of the submitted rectified voltage is required when changing the direction of rotation.

Werden jedoch Antriebe bei großen Regelbereichen und auch im Vier-Quadrantenbetrieb eingesetzt, so ist ein Tachogenerator erforderlich, der eine automatische Richtungserkennung hat, d. h. bei Wechsel der Drehrichtung die Polung ändert.However, they are used as drives with large control ranges and also in four-quadrant operation is used, a tachometer generator is required that automatically detects the direction has, d. H. the polarity changes when the direction of rotation is changed.

Hierbei werden bei allen gängigen Maschinen und Anlagen Gleichstromtachogeneratoren eingesetzt, die von Null auf eine mehr oder weniger saubere Gleichspannung abgeben, deren Polarität drehrichtungsabhängig ist.DC tacho generators are used in all common machines and systems used, which output from zero to a more or less clean direct voltage, whose polarity depends on the direction of rotation.

Gleichstromtachogeneratoren haben aber gegenüber Wechsel- bzw Drehstromrachogeneratoren den Nachteil der wesentlich höheren Gestehungskosten, größeren Baumaße, sowie derverschleißbehafteten Kohlebürsten.DC tacho generators have, however, compared to AC or three-phase racho generators the disadvantage of the significantly higher production costs, larger dimensions and those subject to wear Carbon brushes.

Um nun auch von einem Wechselstromsystem wieder einen mehrphasigen Wechsel- bzw. Drehstromtachogenerator, und eine in der Polarität drehrichtungsabhängige, drehzahlproportionale Spannung zu erhalten, wurde nachstehend beschriebene Schaltung entwickelt. Die hervorgehobenen und weiteren Merkmale der Erfindung sind in der nachfolgenden Beschreibung unter Bezugnahme auf die Zeichnung nach Figur 1 erläutert.In order to switch from an alternating current system to a multi-phase one AC or three-phase tachometer generator, and a polarity dependent on the direction of rotation, To obtain speed-proportional voltage, the circuit described below was used developed. The highlighted and further features of the invention are in the The following description is explained with reference to the drawing according to FIG.

Figur 1 zeigt einen schematischen Aufbau der elektronischen Schaltung in Verbindung mit den Wicklungen eines mehrphasigen (beispielsweise dreiphasigen) Tachogenerators.Figure 1 shows a schematic structure of the electronic circuit in conjunction with the windings of a multi-phase (for example, three-phase) Tachometer generator.

Der Tachogenerator mit den Wicklungen 1, 2 und 3 wird auf die Eingänge eines Gleichrichters 4 geschaltet. Der Gleichrichter kann wahlweise passiv als normaler dreiphasiger Brückengleichrichter ausgeführt sein, oder aber als elektronischer Gleichrichter, beispielsweise mit integriertem Schaltkreis (Operationsverstärker etc.) ausgerüstet sein, um die Schwellspannungen von einem normalen Gleichrichter zu umgehen.The tachometer generator with windings 1, 2 and 3 is connected to the inputs a rectifier 4 switched. The rectifier can optionally be passive as a normal be designed as a three-phase bridge rectifier, or as an electronic one Rectifiers, for example with an integrated circuit (operational amplifier etc.) be equipped to handle the threshold voltages from a normal rectifier to bypass.

Bei elektronischem Gleichrichter wird am Trimmer 5 die Schwellspannung, bzw. die Offsetkompensation im Nullpunkt durchgeführt.In the case of an electronic rectifier, the threshold voltage is set at trimmer 5, or the offset compensation is carried out at the zero point.

Am Ausgang des Gleichrichters, bzw. Gleichrichterverstärkers 4 steht also eine drehzahlproportionale gleichgerichtete Tacho -spannung zur Verfügung.At the output of the rectifier or rectifier amplifier 4 stands a rectified tachometer voltage proportional to the speed is available.

Die Wechselspannungen aus den Wicklungen 1, 2 und 3 des Tachogenerators werden auf einem weiterer. Verstärker 6 zugeführt.The alternating voltages from windings 1, 2 and 3 of the tachometer generator be on another. Amplifier 6 supplied.

Dieser Verstärker verstärkt zum einen die Wechselspannung und hat eine eingebaute Phasenfolge-Erkennung, sodaß am Ausgang des Verstärkers 6 eine in der Polarität drehrichtungsabhängige Spannung auftritt.On the one hand, this amplifier amplifies the AC voltage and has a built-in phase sequence detection, so that at the output of the amplifier 6 an in the polarity direction-dependent voltage occurs.

Im Verstärker 7, dessen erste Eingänge vom Tachogleichrichter 4 gespeist werden und dessen zweite Eingänge vom Phasenerkennungsverstärker 6 gespeist werden, wird die gleichgerichtete Tachogeneratorspannung aus Gleichrichter bzw. Verstärker 4 in Abhängigkeit des Richtungserkennungssignales durch den Phasenerken -nungsverstärker 6 in ihrer Polarität gedreht. Die Drehung der Polarität-in Abhängigkeit der Drehrichtung kann entweder durch einen elektronischen Verstärker mit Phasenumkehr, oder aber bei -spielsweise einem Relais (z.B. schnelles Reedrelais) erfolgen,so daß am Ausgang 8 der gesamten Einheit ein in der Polarität drehrichtungsabhängiges, und zudem drehzahlproportionales Gleich -spannungssignal als Istwert zur Verfügung steht.In the amplifier 7, the first inputs of which are fed by the tachometer rectifier 4 and whose second inputs are fed by the phase detection amplifier 6, becomes the rectified tacho generator voltage from the rectifier or amplifier 4 depending on the direction recognition signal by the phase recognition amplifier 6 rotated in polarity. The rotation of the polarity - depending on the direction of rotation can either be through an electronic amplifier with phase reversal, or else for example a relay (e.g. fast reed relay), so that at the output 8 of the entire unit a polarity dependent on the direction of rotation and also proportional to the speed DC voltage signal is available as an actual value.

Claims (1)

PATEN TAN 5 P RU C H -Elektronischer Mehrphasen-Gleichstromtachogenerator, dadurch gekennzeichnet, daß der elektrischen oder elektronischen Gleichrichtung eines beliebigen Mehrphasen-Tachogenerators ein Phasenerkennungsverstärker nachgeschaltet ist, der die aufgrund des Drehrichtungswechsels veränderte Phasenlage erkennt und ein entsprechendes Signal auf einen Umschaltkreis abgibt, der die gleichgerichtete Tachogeneratorspannung umpolt.PATEN TAN 5 P RU C H -Electronic multiphase direct current tachometer generator, characterized in that the electrical or electronic rectification a phase detection amplifier connected downstream of any multi-phase tachometer generator that detects the changed phase position due to the change in the direction of rotation and emits a corresponding signal to a switching circuit, which the rectified Tachogenerator voltage reversed.
DE19792935525 1979-09-03 1979-09-03 Electronic multiple phase DC tachogenerator arrangement - uses AC tachogenerator with phase sensitive amplifier and changeover circuit Withdrawn DE2935525A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792935525 DE2935525A1 (en) 1979-09-03 1979-09-03 Electronic multiple phase DC tachogenerator arrangement - uses AC tachogenerator with phase sensitive amplifier and changeover circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792935525 DE2935525A1 (en) 1979-09-03 1979-09-03 Electronic multiple phase DC tachogenerator arrangement - uses AC tachogenerator with phase sensitive amplifier and changeover circuit

Publications (1)

Publication Number Publication Date
DE2935525A1 true DE2935525A1 (en) 1981-03-19

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DE19792935525 Withdrawn DE2935525A1 (en) 1979-09-03 1979-09-03 Electronic multiple phase DC tachogenerator arrangement - uses AC tachogenerator with phase sensitive amplifier and changeover circuit

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071866A1 (en) * 1981-08-07 1983-02-16 Siemens Aktiengesellschaft Apparatus for generating a voltage proportional to the direction and speed of rotation of a D.C. drive
DE3131438A1 (en) * 1981-08-07 1983-02-24 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR GENERATING ONE OF THE SPEED AND DIRECTION OF DIRECT CURRENT DRIVE PROPORTIONAL VOLTAGE
EP0128520A2 (en) * 1983-06-14 1984-12-19 Kollmorgen Corporation DC tachometer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071866A1 (en) * 1981-08-07 1983-02-16 Siemens Aktiengesellschaft Apparatus for generating a voltage proportional to the direction and speed of rotation of a D.C. drive
DE3131438A1 (en) * 1981-08-07 1983-02-24 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR GENERATING ONE OF THE SPEED AND DIRECTION OF DIRECT CURRENT DRIVE PROPORTIONAL VOLTAGE
EP0128520A2 (en) * 1983-06-14 1984-12-19 Kollmorgen Corporation DC tachometer
EP0128520A3 (en) * 1983-06-14 1987-01-21 Kollmorgen Technologies Corporation Flux contoured rotary electromagnetic machine

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8141 Disposal/no request for examination