DK161220B - PROCEDURE FOR SETTING UP AN IMAGING DEVICE - Google Patents

PROCEDURE FOR SETTING UP AN IMAGING DEVICE Download PDF

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Publication number
DK161220B
DK161220B DK146281A DK146281A DK161220B DK 161220 B DK161220 B DK 161220B DK 146281 A DK146281 A DK 146281A DK 146281 A DK146281 A DK 146281A DK 161220 B DK161220 B DK 161220B
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DK
Denmark
Prior art keywords
plane
pulse
pulse width
bellows
pulses
Prior art date
Application number
DK146281A
Other languages
Danish (da)
Other versions
DK161220C (en
DK146281A (en
Inventor
Sven Nygaard
Original Assignee
Eskofot As
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 Eskofot As filed Critical Eskofot As
Priority to DK146281A priority Critical patent/DK161220C/en
Priority to GB8208112A priority patent/GB2096360B/en
Priority to NL8201203A priority patent/NL8201203A/en
Priority to DE19823211050 priority patent/DE3211050A1/en
Priority to JP57052221A priority patent/JPS581137A/en
Publication of DK146281A publication Critical patent/DK146281A/en
Publication of DK161220B publication Critical patent/DK161220B/en
Priority to JP1991086750U priority patent/JPH0489947U/ja
Application granted granted Critical
Publication of DK161220C publication Critical patent/DK161220C/en

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/34—Means for automatic focusing therefor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/39—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using a combination of the means covered by at least two of the preceding groups G05B19/21, G05B19/27 and G05B19/33
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
    • H02P7/291—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation with on-off control between two set points, e.g. controlling by hysteresis

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Control Of Stepping Motors (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Control Of Position Or Direction (AREA)
  • Control Of Multiple Motors (AREA)
  • Detergent Compositions (AREA)

Description

iin

DK 161220 BDK 161220 B

Opfindelsen angår en fremgangsmåde til fin indstilling af et originalplan, et objektivplan og et billedplan i et billedgen-givende apparat ved hjælp af en eller flere drivmotorer i form af jævnstrømsmotorer med stort drejningsmoment, som kan styres 5 ved hjælp af spændingsimpulser, idet der sker en opbremsning efter den enkelte impulstilførsel, og idet der først sker en grovindstilling af planerne, og en regneenhed styrer impuls-tilførslen, og hvert plans forskydning per impuls i den omtrentlige slutposition af planet opnået ved grovindsti11 ingen 10 måles ved hjælp af en kodeskive, ved hvilken fremgangsmåde impulsbredden reguleres under den sidste del af planets forskydning.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a method for fine tuning an original plane, an objective plane and an image plane to an image reproducing apparatus by means of one or more drive motors in the form of high torque direct current motors which can be controlled by means of voltage pulses. braking after the individual pulse supply, and first, a coarse adjustment of the plans occurs, and a calculator controls the pulse supply, and each plane's displacement per pulse in the approximate end position of the plane obtained at coarse path 10 is measured by a code dial, at which The pulse width is controlled during the last part of the plane's displacement.

Fra dansk patentskrift nr. 149.352 kendes en fremgangsmåde til 15 indstilling af de forskellige planer i et bi 11 edgengivende apparat ved hjælp af jævnstrømsmotorer, der drives ved hjælp af impulser, idet der sker en opbremsning efter hver impulstilførsel. Impulsbredden reguleres i afhæhgighed af spændingsfaldet over motoren. Indstillingen bliver imidlertid ikke helt 20 nøjagtig i tilfælde af variationer i forsyningsspændingen.Danish patent specification 149,352 discloses a method for adjusting the various planes in a bi-current reproducing apparatus by means of DC motors driven by pulses, with a deceleration occurring after each pulse supply. The pulse width is controlled in dependence on the voltage drop across the motor. However, the setting will not be exactly 20 in case of variations in supply voltage.

En fremgangsmåde af den indledningsvis nævnte art er ifølge opfindelsen ejendommelig ved, at regneenheden ud fra den målte forskydning per impuls og den resterende positionsændring be-25 regner og indstiller den nødvendige impulsbredde, som skal til for at bringe planet til den ønskede slutposition med et forud fastlagt antal impulser.According to the invention, a method of the kind mentioned initially is characterized in that the calculator calculates and sets the necessary pulse width from the measured displacement per pulse and the remaining position change necessary to bring the plane to the desired final position with a predetermined determined number of pulses.

Denne reguleringsmetode er uafhængig af variationer i forsy-30 ningsspændi ngen, og er derfor nøjagtigere end hidtil kendt.This control method is independent of variations in the supply voltage and is therefore more accurate than previously known.

Hvis f.eks. spændingen er faldet, og forskydni ngen per impuls er faldet tilsvarende, så øges impulsbredden således, at forskydningen per impuls er den samme. Tilsvarende hvis spændingen er steget. Reguleringen bliver således uafhængig af spæn-35 dingen. Dette svarer til, at der reguleres direkte i afhængighed af forskydningen. Reguleringen bliver derved uafhængig af variationer i forsyningsspændingen og bælgens sammentrykning.For example, the voltage has decreased and the displacement per pulse has decreased correspondingly, so the pulse width is increased so that the displacement per pulse is the same. Similarly if the voltage has increased. Thus, the regulation becomes independent of the voltage. This is equivalent to being directly regulated depending on the displacement. The control thereby becomes independent of variations in supply voltage and bellows compression.

22

DK 161220 BDK 161220 B

Opfindelsen skal nærmere forklares i det følgende under henvisning til tegningen, hvor fig. 1 viser et bi 11 edgengivende apparat i form af et kamera, 5 fig. 2 en del af kameraet set bagfra, idet man ser en kodeski-ve i forbindelse med et fotocellearrangement, fig. 3 kameraet med motorkædedrev og kodeskiver set bagfra og 10 fig. 4 selve instillingsapparaturet.The invention will be explained in more detail below with reference to the drawing, in which 1 shows a bi-11 reproducing apparatus in the form of a camera; FIG. 2 is a rear view of a portion of the camera showing a code disc in connection with a photocell arrangement; FIG. 3 is the rear view camera with motor chain drive and code washers and 10 fig. 4 The setting device itself.

Det i fig. 1 viste reproduktionskamera omfatter et originalplan 8, et objektivplan 6 og et billedplan 4. Planerne ind-15 stilles i forhold til hinanden ved hjælp af et antal jævn strømsmotorer 1 med stort drejningsmoment - se fig. 3 - som via kædedrev styrer planernes op- og nedadgående bevægelse. Indstillingen sker automatisk. Den sker desuden forholdsvis hurtigt og uden, at siutsti11 i ngen af den grund bliver unøjag-20 tig. Indstillingen sker i praksis ved, at man indstiller til den ønskede forstørrelsesprocent, idet forstørrelsesprocenten er bestemmende for planernes slutstilling. Med en forholdsvis stor hastighed bringer en jævnstrømsmotor 1 derefter det pågældende plan, f.eks. objektivplanet 6 i nærheden af den øn-25 skede slutstilling, hvilket sker på konventionel måde. Forskydningen fra den foreløbige stilling til den ønskede slut-stilling sker ved tilførsel af et passende antal impulser. Efter hver impulstilførsel sker der en hurtig opbremsning for forhindring af efterløb. Derved opnås en kontrolleret posi-30 ti onsindstilling, der inden for store områder er meget nøjagtig. Efterhånden som en bælg 7 under objektivplanets 6 indstilling presses mere og mere sammen, bliver det nødvendige drejningsmoment af jævnstrømsmotoren 1 imidlertid større og større, hvorved impulsbredden må øges tilsvarende.The FIG. 1 reproduces an original plane 8, an objective plane 6, and an image plane 4. The planes are set relative to each other by means of a plurality of even torque motors 1 with high torque - see FIG. 3 - which, via chain drive, controls the up and down movement of the planes. The setting is done automatically. In addition, it occurs relatively quickly and without any reason being inaccurate for any reason. In practice, this setting is done by setting the desired magnification percentage, since the magnification percentage determines the final position of the plans. At a relatively high speed, a DC motor 1 then brings the plane in question, e.g. the objective plane 6 near the desired end position, which is done in a conventional manner. The displacement from the preliminary position to the desired final position occurs by supplying an appropriate number of pulses. After each impulse supply, a rapid braking occurs to prevent the aftermath. This results in a controlled position setting which is very accurate in large areas. However, as a bellows 7 under the setting of the objective plane 6 is pressed more and more together, the required torque of the DC motor 1 becomes larger and larger, thus increasing the pulse width accordingly.

3535

Dette sker ifølge opfindelsen ved hjælp af en regneenhed 2 og en kodeskive i form af en koder 21 med fotoceller 20 til må- 3This is done according to the invention by means of a calculating unit 2 and a code disc in the form of an encoder 21 with photocells 20 for measuring 3

DK 161220 BDK 161220 B

ling af planernes forskydning per impuls, idet regneenheden 2 og kodeskivearrangementet 20, 21 beregner det pågældende plans forskydning ved begynde 1 ses impu1sbredden og regulerer impulsbredden i overensstemmelse hermed til opnåelse af den ønskede 5 forskydning per impuls, idet man udnytter, at forskydningsæn- dringen er proportional med impulsbreddeændringen. Derved bliver man næsten helt uafhængig af belastningen, såsom belastningen hidrørende fra sammentrykningen af bælgen 7.The displacement of the planes per pulse, the calculating unit 2 and the code disc arrangement 20, 21 calculating the displacement of the respective plan at the beginning 1, the impulse width is seen and adjusting the pulse width accordingly to obtain the desired 5 displacement per pulse, taking advantage of the displacement change being proportional to the pulse width change. Thereby, one becomes almost completely independent of the load, such as the load resulting from the compression of the bellows 7.

10 Ifølge opfindelsen er det således anvist, hvorledes der med en regneenhed og en kodeskive kan opnås både et stigende drejningsmoment og en mere præcis indstilling af planerne på kortest mulig tid ved anvendelse af impulsbreddemodulation.Thus, according to the invention, it is disclosed how, with a calculator and a code disc, both an increasing torque and a more accurate adjustment of the plans can be obtained in the shortest possible time using pulse width modulation.

15 Ud fra den ønskede forstørrelsesprocent beregner regneenheden de pågældende planers ønskede positioner i forhold til hinanden. Disse positioner omsættes til tællinger, der lagres i tællere. Det enkelte plans øjeblikkelige position svarer også til en tælling, der måles ved hjælp af kodeskivefotocellear-20 rangementet, idet antallet af impulser afgivet af fotocellear-rangementet er proportionalt med det pågælgende plans forskydning. Når de to tællinger er lige store, standses den indtil da som almindelig jævnstrømsmotor drevne motor og det dertil hørende plan. Som følge af motorens efterløb standser planet 25 imidlertid ikke øjeblikkeligt, og den anden tæller tæller videre, indtil planet standser. Der må derfor foretages en efter justering til opnåelse af den ønskede slutstilling af planet, hvilket sker ved en sammenligning af de to tællinger. Der tilføres derefter et passende antal impulser til jævnstrømsmo-30 toren, der nu i hovedsagen drives som en skridtmotor, idet regneenheden ud fra målinger foretaget ved hjælp af fotocelle-arrangementet beregner det pågældende plans forskydning per impulstilførsel ved begyndelsesimpulsbredden og regulerer impulsbredden i overensstemmelse hermed til opnåelse af den øn-35 skede forskydning per impulstilførsel, idet man udnytter, at forskydningsændringen med tilnærmelse er proportional med im- j pulsbreddeændringen inden for et snævert afgrænset område. Op-15 Based on the desired magnification percentage, the calculator calculates the desired positions of the plans in relation to each other. These positions translate into counts stored in counters. The instantaneous position of the individual plane also corresponds to a count measured by the encoder photocell array, the number of pulses emitted by the photocell array being proportional to the displacement of the plane in question. When the two counts are equal, it is halted until then as ordinary DC motor driven motor and the associated plane. However, due to the aftermath of the engine, the plane 25 does not stop immediately and the second counter counts until the plane stops. Therefore, an adjustment must be made to obtain the desired final position of the plane, which is done by comparing the two counts. An appropriate number of pulses is then applied to the DC motor, which is now essentially operated as a stepper motor, the calculator calculating the offset by the photocell arrangement at the initial pulse width based on measurements taken by the photocell arrangement and adjusting the pulse width accordingly. obtaining the desired displacement per pulse supply, utilizing that the displacement change with approximation is proportional to the pulse width change within a narrowly defined range. Up-

Claims (1)

20 Ifølge opfindelsen er problemerne i forbindelse med de forholdsvis store kraftpåvirkni nger hidrørende fra bælgens sammentrykning således løst ved, at kun den sidste del af indstillingen, foretages ved hjælp af impulser. Derved kan impulsbredden indstilles ganske nøjagtigt svarende til, at bæl-25 gens kraftpåvirkning - uanset størrelsen - med tilnærmelse er konstant inden for det pågældende fi nindsti 11 ingsområde. Patentkrav. 30 Fremgangsmåde til finindsti11 ing af et originalplan (8), et objektivplan (6) og et billedplan (4) i et bi 1 ledgengivende apparat ved hjælp af en eller flere drivmotorer i form af jævnstrømsmotorer (1) med stort drejningsmoment, som kan sty-35 res ved hjælp af spændingsimpulser, idet der sker en opbremsning efter den enkelte impulstilførsel, og idet der først sker en grovindstilling af planerne, og en regneenhed (2) styrer DK 161220 B impulst i Iførsien, og hvert plans forskydning per impuls i den omtrentlige slutposition af planet opnået ved grovindst i 11 ingen måles ved hjælp af en en kodeskive (21), ved hvilken fremgangsmåde impulsbredden reguleres under den sidste del af pla-5 nets forskydning, kendetegnet ved, at regneenheden (2) ud fra den målte forskydning per impuls og den resterende positionsændring beregner og indstiller den nødvendige impulsbredde, som skal til for at bringe planet til den ønskede slutposition med et forud fastlagt antal impulser. 10 15 20 25 30 35According to the invention, the problems associated with the relatively large force effects resulting from the compression of the bellows are thus solved by only the latter part of the adjustment being made by means of impulses. In this way, the pulse width can be adjusted to exactly the same that the force effect of the bellows - regardless of size - is approximately constant within the range of application. Claims. A method of fine-tuning an original plane (8), a lens plane (6) and an image plane (4) in a bi-directional reproducing apparatus by means of one or more drive motors in the form of high torque direct current motors (1) capable of controlling -35 is resolved by means of voltage pulses, as a braking occurs after the individual pulse supply, and first a rough adjustment of the plans is made, and a calculating unit (2) controls the pulse in Iførsien, and each plane's displacement per pulse in it approximate end position of the plane obtained by gross gain in 11 is not measured by means of a code disc (21), by which method the pulse width is controlled during the last part of the plane offset, characterized in that the calculating unit (2) from the measured offset per pulse and the remaining position change calculates and sets the required pulse width needed to bring the plane to the desired end position with a predetermined number of pulses. 10 15 20 25 30 35
DK146281A 1981-03-31 1981-03-31 PROCEDURE FOR SETTING UP AN IMAGING DEVICE DK161220C (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DK146281A DK161220C (en) 1981-03-31 1981-03-31 PROCEDURE FOR SETTING UP AN IMAGING DEVICE
GB8208112A GB2096360B (en) 1981-03-31 1982-03-19 A method and a device for adjusting an image-reproducing apparatus
NL8201203A NL8201203A (en) 1981-03-31 1982-03-23 METHOD AND APPARATUS FOR ADJUSTING AN IMAGE REPRODUCTION APPARATUS
DE19823211050 DE3211050A1 (en) 1981-03-31 1982-03-25 METHOD AND DEVICE FOR ADJUSTING AN IMAGE DISPLAY DEVICE
JP57052221A JPS581137A (en) 1981-03-31 1982-03-30 Method of and apparatus for adjusting image reproducer
JP1991086750U JPH0489947U (en) 1981-03-31 1991-09-30

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK146281A DK161220C (en) 1981-03-31 1981-03-31 PROCEDURE FOR SETTING UP AN IMAGING DEVICE
DK146281 1981-03-31

Publications (3)

Publication Number Publication Date
DK146281A DK146281A (en) 1982-10-01
DK161220B true DK161220B (en) 1991-06-10
DK161220C DK161220C (en) 1991-11-25

Family

ID=8105094

Family Applications (1)

Application Number Title Priority Date Filing Date
DK146281A DK161220C (en) 1981-03-31 1981-03-31 PROCEDURE FOR SETTING UP AN IMAGING DEVICE

Country Status (5)

Country Link
JP (2) JPS581137A (en)
DE (1) DE3211050A1 (en)
DK (1) DK161220C (en)
GB (1) GB2096360B (en)
NL (1) NL8201203A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4537499A (en) * 1983-03-21 1985-08-27 Xerox Corporation Imaging system for producing reduced or enlarged images of an original document
US4530592A (en) * 1983-03-21 1985-07-23 Xerox Corporation Registration mechanism for a multimagnification reproduction apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2225416A1 (en) * 1972-05-25 1973-12-06 Boeger Duplomat Apparate Kg Dr PROCEDURE FOR SETTING UP A REPRO CAMERA
JPS5394981A (en) * 1977-01-28 1978-08-19 Seiko Epson Corp Electronic wristwatch
DK149352C (en) * 1979-01-11 1986-11-03 Eskofot As PROCEDURE FOR SETTING A MAGAZINE
JPS55140909A (en) * 1979-04-20 1980-11-04 Hitachi Koki Co Ltd Servomotor control unit

Also Published As

Publication number Publication date
JPS581137A (en) 1983-01-06
DK161220C (en) 1991-11-25
DE3211050A1 (en) 1982-10-07
DK146281A (en) 1982-10-01
GB2096360A (en) 1982-10-13
JPH0489947U (en) 1992-08-05
NL8201203A (en) 1982-10-18
GB2096360B (en) 1985-05-30

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