DE931006C - Process for electronic length measurement and device for carrying out the process - Google Patents

Process for electronic length measurement and device for carrying out the process

Info

Publication number
DE931006C
DE931006C DESCH13728A DESC013728A DE931006C DE 931006 C DE931006 C DE 931006C DE SCH13728 A DESCH13728 A DE SCH13728A DE SC013728 A DESC013728 A DE SC013728A DE 931006 C DE931006 C DE 931006C
Authority
DE
Germany
Prior art keywords
frequency
carrying
length measurement
amplifier
voltages
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
Application number
DESCH13728A
Other languages
German (de)
Inventor
Hans F Dipl-Ing Schimmelbusch
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 DESCH13728A priority Critical patent/DE931006C/en
Application granted granted Critical
Publication of DE931006C publication Critical patent/DE931006C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness

Landscapes

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

Description

Das Patent 910 228 betrifft ein Verfahren zur elektronischen Längenmessung, bei dem zwei von einem Geber gesteuerte Induktivitäten abwechselnd von je einer um I800 phasenverschobenen Halbwelle einer niederfrequenten, mit der höherfrequenten Meß spannung überlagerten Wechselspannung beeinflußt werden und die den Differenzwerten der beiden Induktivitäten proportionalen Spannungen über einen Ausgangsverstärker Abgleichmittel steuern, die einen Selbstabgleich der Schaltung und eine Anzeige der Abmessungen des Prüflings bewirken. Patent 910 228 relates to a method for electronic length measurement, in which two inductances controlled by one encoder alternate with one each Half-wave phase shifted by 1800 of a low-frequency one with the higher-frequency one Measurement voltage superimposed AC voltage can be influenced and the difference values voltages proportional to the two inductances via an output amplifier Control adjustment means which self-adjust the circuit and a display the dimensions of the test object.

Nach dem Verfahren des Hauptpatents werden die beiden Spannungen höherer Frequenz der Meßinduktivitäten abwechselnd zu den Halbwellen der Netzfrequenz an den Verstärker gelegt. Diese Steuerung wird unter Zuhilfenahme von Gleichrichtern oder Röhren vorgenommen. Gleichrichter und Röhren zeigen jedoch bekanntlich eine zeitliche Inkonstanz. Diese Erscheinung bringt bei der nachfolgenden hohen Verstärkung Ungenauigkeiten in der Messung, so daß es nötig ist, diese Inkonstanz zu überwachen und auszuregeln. Following the procedure of the main patent, the two tensions higher frequency of the measuring inductances alternating with the half-waves of the mains frequency connected to the amplifier. This control is done with the help of rectifiers or tubes made. However, rectifiers and tubes are known to exhibit one temporal inconsistency. This phenomenon brings with the subsequent high gain Inaccuracies in the measurement, so that it is necessary to monitor this inconsistency and regulate.

Erfindungsgemäß wird die Steuerung der beiden Meßfrequenzen dadurch vorgenommen, daß die beiden Anpassungsübertrager durch die um I800 phasenverschobenen Halbwellen der Netzfrequenz bzw. der Steuerfrequenz abwechselnd in die Sättigung gesteuert werden. Hierdurch wird erreicht, daß die beiden Meßfrequenzen abwechselnd zu den Netzspannungshalbwellen am Verstärker liegen, ohne daß eine Beeinflussung durch inkonstante Glieder eintritt. According to the invention, the control of the two measurement frequencies is thereby achieved made that the two matching transformers are phase-shifted by 1800 Half-waves of the network frequency or the control frequency alternately into saturation being controlled. This ensures that the two measuring frequencies alternate to the mains voltage half-waves at the amplifier without any influence occurs through inconstant links.

Nach dem Verfahren der Erfindung gibt der Generator G seine Spannungen über die variablen Meßinduktivitäten It und I2 auf die Primärwicklungen der übertrager Ct und 82. Über zwei Widerstände w1 und w2 liegen die Spannungen der Sekundärwicklungen am Verstärker V. Der Mittelsteg der Übertrager Ü1 und 82 enthält je eine Steuerwicklung, die, durch um I800 phasenverschobene Netzspannungshalbwellen gespeist, die Übertrager abwechselnd zu den Netzspannungshalbwellen in die Sättigung steuern. Während der ersten Halbwelle wird demnach die Spannung der ersten Induktivität It und während der zweiten Halbwelle die der zweiten Induktivität I2 an den Verstärker gelegt. According to the method of the invention, the generator G gives its voltages Via the variable measuring inductances It and I2 on the primary windings of the transformer Ct and 82. The voltages of the secondary windings are applied via two resistors w1 and w2 on amplifier V. The center bar of the transformer Ü1 and 82 each contains a control winding, which, fed by mains voltage half-waves out of phase by 1800, are the transformers alternately control the mains voltage half-waves into saturation. During the first half-wave is therefore the voltage of the first inductance It and during of the second half-wave that of the second inductance I2 is applied to the amplifier.

Claims (2)

PATENTANSPRÜCHE: I. Verfahren zur elektronischen Längenmessung nach Patent 910 228, dadurch gekennzeichnet, daß die Spannungen der beiden invers wirkenden Meßinduktivitäten (I, und I2) über zwei Übertrager (17 und 2) auf den Verstärker (V) gegeben werden derart, daß abwechselnd zu den Halbwellen der Netzfrequenz oder einer besonderen Steuerfrequenz je einer der Übertrager (tAl bzw. Ü2) in die Sättigung gesteuert wird, so daß durch den gleichen Verstärker (V) synchron zur Sättigungsfrequenz die Spannungen der beiden Meßinduktivitäten (1i undl,) abwechselnd verstärkt werden. PATENT CLAIMS: I. Method for electronic length measurement according to Patent 910 228, characterized in that the voltages of the two acting inversely Measuring inductances (I, and I2) via two transformers (17 and 2) to the amplifier (V) are given in such a way that alternating with the half-waves of the mains frequency or a special control frequency each one of the transformers (tAl or Ü2) into saturation is controlled so that by the same amplifier (V) in synchronism with the saturation frequency the voltages of the two measuring inductances (1i and 1,) are alternately amplified. 2. Anordnung zur Durchführung des Ver-- fahrens nach Anspruch I, dadurch gekennzeichnet, daß die Steuerwicklung der Übertrager (Ü1 und 22) gegenüber den Arbeitswicklungen magnetisch oder galvanisch entkoppelt ist. 2. Arrangement for carrying out the method according to claim I, characterized in that the control winding of the transformer (Ü1 and 22) opposite the working windings is magnetically or galvanically decoupled.
DESCH13728A 1953-10-18 1953-10-18 Process for electronic length measurement and device for carrying out the process Expired DE931006C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH13728A DE931006C (en) 1953-10-18 1953-10-18 Process for electronic length measurement and device for carrying out the process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH13728A DE931006C (en) 1953-10-18 1953-10-18 Process for electronic length measurement and device for carrying out the process

Publications (1)

Publication Number Publication Date
DE931006C true DE931006C (en) 1955-07-28

Family

ID=7427055

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH13728A Expired DE931006C (en) 1953-10-18 1953-10-18 Process for electronic length measurement and device for carrying out the process

Country Status (1)

Country Link
DE (1) DE931006C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1227673B (en) * 1956-06-27 1966-10-27 Licentia Gmbh Non-linear electrical transducer
DE1423150B1 (en) * 1956-03-23 1969-09-25 Licentia Gmbh Inductive transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1423150B1 (en) * 1956-03-23 1969-09-25 Licentia Gmbh Inductive transducer
DE1227673B (en) * 1956-06-27 1966-10-27 Licentia Gmbh Non-linear electrical transducer

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