EP1542919B1 - Procede et dispositif pour regler des tensions d'une bande de systeme a bandes multiples - Google Patents

Procede et dispositif pour regler des tensions d'une bande de systeme a bandes multiples Download PDF

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Publication number
EP1542919B1
EP1542919B1 EP03757666A EP03757666A EP1542919B1 EP 1542919 B1 EP1542919 B1 EP 1542919B1 EP 03757666 A EP03757666 A EP 03757666A EP 03757666 A EP03757666 A EP 03757666A EP 1542919 B1 EP1542919 B1 EP 1542919B1
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EP
European Patent Office
Prior art keywords
web
tension
regulation
webs
regulation process
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EP03757666A
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German (de)
English (en)
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EP1542919A2 (fr
Inventor
Harald Karl Gretsch
Reinhard Georg Gross
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Koenig and Bauer AG
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Koenig and Bauer AG
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Priority to EP07114284A priority Critical patent/EP1860047B1/fr
Publication of EP1542919A2 publication Critical patent/EP1542919A2/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
    • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
    • B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/10—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on running web
    • B65H23/105—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle acting on running web and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/16—Associating two or more webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/22—Fuzzy logic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/42—Means for tensioning webs

Definitions

  • the invention relates to a method and a device for regulating web tension of a multi-track system according to the preamble of claims 1 and 20, respectively.
  • From the DE 100 27 471 A1 is a method for controlling web tension in multi-web operation known, initially absolute and relative voltages of the webs are set to each other at the hopper inlet. This is preferably done with the respective intake.
  • the DE 42 33 855 discloses an apparatus for controlling sheets for the presence of a single or multiple sheet.
  • the evaluation of measured values is based on a fuzzy logic.
  • the invention has for its object to provide a method and apparatus for controlling web tension of a multi-track system.
  • the invention provides a system for self-regulating the web tension for multi-lane processing machines, in particular rotary printing machines. It is by its closed control a significant development over currently customary in rotary printing machines web tension control systems. The system is advantageous for triple or double width presses.
  • the fuzzy-logic-based control concept makes an innovative contribution to greater production reliability and quality consistency in a production that is increasingly cost-less and less manual-oriented.
  • the control system supports the operator when starting the machine, relieves the tension during web tension control during production, and contributes to greater stability in all phases of production.
  • a paper web On the way through the rotary press from reel changer on the intake, the printing units and the superstructure to the folder a paper web has different states of tension (or stress relief or tension profile), the type of paper used (manufacturer, grammage, paper type), the repeated application of ink and possibly fountain solution (in offset), the driven tension elements (infeed with or without dancer roller, tension roller, funnel inlet roller) and speed changes affect the real tension profile of the paper web within the machine. Even more demanding and complex is the regulation of a constant web tension in multi-lane operation.
  • funnel inlet and in the folder also the relative tension of the individual paper webs to each other for optimum web running and printing conditions of importance.
  • both an optimal tension profile of each individual paper web within the machine and optimized tension profiles of the individual paper webs are to be ensured to each other to increase the starting security (avoiding paper tears) to increase the net production output (by less downtime due to disruption ), to achieve a uniform print quality (less register differences) and to improve the running safety in multi-web operation.
  • the software adjusts the optimum stress level within a paper web, depending on the situation at the hopper inlet and the respective paper profiles, and performs the optimum matching of the webs to one another.
  • paper profiles d.
  • Information on the behavior of the particular type of paper eg stress-strain characteristics
  • Expert knowledge is stored in the system to quickly determine the setting logic.
  • the intelligent control system directly controls the actually measured tension values of the paper webs in the processing machine and not indirectly on strain measurement and control based on engine moments. This brings advantages in terms of efficiency as well as the positive effect on waste, production costs and operator ergonomics.
  • fuzzy technology control relies on expert knowledge and the operator no longer has to make any adjustments.
  • the measured values relating to the production are "caught up" and the relevant aggregates are directly addressed for influencing the voltage.
  • an ideal overall solution is almost always found in the existing control system without a specific controlled variable being precisely maintained must be and a total solution as the discrete controller so that may not be achievable.
  • Fig. 1 shows a path of several, at least two tracks B1; B2; B3; B4, z. B. web B1; B2; B3; B4, z. B. paper web B1; B2; B3; B4 by a Processing machine, in particular printing machine, with the web tension substantially influencing, schematically illustrated units:
  • the railway B1; B2; B3; B4, exemplified at the track B1 is from a supply 01, z. B. a roll change 01, fed and passes through at least one traction device (or braking device) 02 for promoting and setting a web tension, z.
  • a retraction 02 before they have a processing stage 03, z. B. at least one printing unit 03 with one or more printing units, passes through.
  • the retraction unit 02 can simultaneously represent an actuator 02 for adjusting the voltage before the printing unit 03.
  • nDE according to printing unit 03
  • actuator 05 influencing the web tension
  • a superstructure not shown can be arranged turning bars and longitudinal cutting devices, through which either uncut paths B1 turned or overturned, or trains B1 can first be cut and then turned or overturned.
  • harp 07 a plurality of deflecting rollers associated with a plurality of webs B1, B2, B3, B4 or sub-webs
  • Measuring point 06 vTE: before funnel inlet
  • the measuring point 04 "after the printing unit” thus means a measuring point 04 in front of the tensioning element 05 following the printing unit 03 or at least in front of a possibly present cutting and / or turning device.
  • the web B1 (or its partial webs) together with other webs B2; B3; B4 (or their partial webs) merged into one or more strands 13, pass another web tension influencing actuator 08, a tension roller 08 or roller / pull group 08, z.
  • the measuring point 06 "before funnel inlet or harp" thus means a measuring point 06 for the individual web or partial web before the merging of webs or partial webs at the Trichtereinlaufwalze 08 (or other upstream, several tracks associated with rollers) and after the tension element 05 or, if available, after a cutting and / or turning device.
  • the aforementioned retraction unit 02 has an actuator 16 which influences the web tension, a tension roller 16 or roller / tension group 16 or dancer roller 16 and possibly a separate measuring point 14 for determining the web tension (vDE: before printing unit 03).
  • the actuator 16 and the measuring point 14 can also be arranged between the roller change 01 and the printing unit 03 without being combined to form a retraction unit 02.
  • the separate measuring point 14 may be omitted if there is already adequate information about the present voltage via the actuator 16, for example as an actuator 16 which can be actuated by means of a pressure medium.
  • the funnel 09 exemplary tracks B1; B2; B3; B4 fed from different sides arranged printing units 03, wherein the funnel structure a plurality of funnels 09 can side by side and / or each other, and a plurality of the tracks B1; B2; B3; B4 strands formed 13 may be performed on more than one folder 11.
  • the tracks B1; B2; B3; B4 not in each case in the manner schematically illustrated by a respective pressure unit 03 through, but can, for. B. after passing through a part of a printing unit 03 are guided out of this and either equal to the superstructure or other printing unit 03 are fed to further processing. It is essential, however, that the measuring points 04; 06; 14 and the actuators 05; 10; 16 for the below explained in more detail scheme the tracks B1; B2; B3; B4 are assigned or become.
  • Fig. 1 are by arrows through the measuring points 04; 06; 14 signals S1.1 obtained; S1.2; S1.3 of the web B1, S2.1; S2.2; S2.3 of the track B2, etc. indicated. Also in the area of the roll changer 01, if necessary, a voltage descriptive signal S1.0; S2.0; S3.0; S4.0 (dashed) of an unmarked measuring point.
  • a voltage descriptive signal S1.0; S2.0; S3.0; S4.0 (dashed) of an unmarked measuring point.
  • the actuators 16; 05 as signals S1.11; S1.12 for the track B1, S2.11; S2.12 for the railway B2 etc. with arrows.
  • the signal Sx.11 represents, for example, a default value (set value) for the web tension in the feed unit 02, the signal Sx.12 a default value (setpoint) for the lead of the draw roller 05.
  • the signals S0.13; S0.14 set the default values (setpoints), z.
  • An optionally existing default value (setpoint) for the web tension in the area of the roll changer 02 is denoted by S1.10 for the web B1, S2.10 for the web B2, etc. ,
  • the printing machine off Fig. 1 has a control system 17, whose concept initially in principle based on the Fig. 2 is explained, and in Fig. 3 with direct reference to the regulation of the web tension of several webs B1; B2; B3; B4 off Fig. 1 at least a plurality of webs B1 running together on at least one funnel inlet roller 08; B2; B3; B4 (or partial webs), is shown.
  • the control system 17 has two mutually different types of controllers 18 and 19 with two mutually different subtasks (control processes). These two "types" of controllers 18 and 19 may be spatially separated as different hardware components, as different software programs communicating with each other, or as two processes or subroutines or subroutines in a software program. Unless explicitly stated otherwise, the terms controller 18; 19 or control processes 18; 19 under the same reference numerals and should be understood for all of the above and other suitable ways of implementing the same. As in Fig. 2 shown, the control system has several (here two) controller 18.1; 18.2, which each actual values obtained from a respective sub-process, and generate one or more manipulated variables for the considered sub-process based on their implemented logic.
  • the controllers 18 are superordinated by the controller 19, which receives actual values from the subprocesses, by means of its implemented logic set values for the subordinate controllers 18.1; 18.2 as well as possibly to the entire process directed manipulated variables outputs. There is no mutual interaction or communication between the controllers 18 and 19. Although they can work simultaneously, they work in principle independently of each other, although they sometimes consider the same process values (actual values) and the control process 19 generates specifications (setpoint specifications) for the control processes 18 ,
  • Fig. 2 memory devices 21 are shown, from which, before the start of the processes, start values are input to the controllers 18; 19 can be read.
  • the start values are advantageously read from a common memory unit 21.
  • the control system 17 From each of the involved railways at least two measured values, namely the measured value S1.2; S2.2; S3.2; S4.2 for the voltages, z. B. of measuring rollers 04 performed as measuring point 04, (directly) after the respective printing unit 03 and the measured value S1.3; S2.3; S3.3; S4.3 fed from the respective measuring point 06 before the funnel inlet or the harp 07.
  • the control system 17 can, if necessary, also receive the signal S1.1; S2.1; S3.1; S4.1 be supplied for the voltage in each case before the printing unit 03 (dashed lines).
  • the measurement of the voltage takes place in each case, for example, by the web B1; B2; B3; B4 wrapped measuring rollers.
  • the control system 17, at least the controller 18, preferably controls and optimizes the web tensions using fuzzy logic.
  • the input variables such. Eg the measured values S1.3; S2.3 etc. for the voltages (possibly correspondingly scaled) of a path B1 are fuzzified, ie as input values for functions defined in sections each describing a term (linguistic size range, eg, large, medium, small).
  • the function value is the degree to which the input value satisfies the linguistic meaning of the term or, in the case of overlapping of the value ranges, the degrees of fulfillment.
  • the subsequent defuzzification of the degrees of fulfillment of the individual terms of the linguistic variables is a sharp initial value, z. B. generates a corresponding signal to an actuator or a new setpoint for an actuator.
  • one actuator, another actuator, or several actuators may be preset. Which rules are applied is determined by the degrees of fulfillment of the terms of the input variables.
  • the controller 19 does not have to be based on fuzzy logic, but can be implemented discretely in other ways, eg as a PID controller 19. Another advantage is the version with fuzzy logic.
  • the control system 17 has, as generally shown above, the two mutually different controllers 18 and 19 with two mutually different subtasks, wherein the controller 18, the web tension of a single track B1; B2; B3; B4 controls in its course and in terms of limits, and the controller 19, the voltage level, in particular the voltage level in front of the hopper roller 08, the tracks there guided together B1; B2, B3; B4 sets relative to each other.
  • the control system 17 has at least a number of regulators 18 which correspond to the number of tracks B1; B2; B3; B4 (or partial webs) corresponds.
  • the controllers 18 all have the same architecture or are in the same type and programmed for the in Fig. 1 and 2 illustrated four lanes B1; B2; B3; B4 with 18.1; 18.2; 18.3; 18.4.
  • control system 17 start values are specified as setpoints, which z. B. provide meaningful starting points for certain web guides.
  • the controllers 18.1; 18.2; 18.3; 18.4; 19 start values S1.11_0; S1.12_0; S2.11_0; S2.12_0; S3.11_0; S3.12_0; S4.11_0; S4.12_0; S0.13_0 and / or S0.14_0 for the signals S1.11; S1.12; S2.11; S2.12; s3.11; S3.12; s4.11; s4.12; S0.13 and / or S0.14 (voltages or overfeeds). These are for example kept in a memory and may be pending from the selected production and / or the web material.
  • the controller 18.1 processes these input variables in the o. G. Art by means of fuzzy logic and generates an output signal S1.11, which acts on the actuator 16 of the feed unit 02.
  • the controller 18.1 can additionally be supplied with the signal S1.1 for the measurement of the voltage before the printing unit 03, and be processed in the logic.
  • the controller 18.1 with a signal S1.12 also acts on the actuator 05 behind the printing unit 03, z. B. by determination and specification of suitable Voreilungs codon.
  • the actuator 05 behind the printing unit 03, z. B. by determination and specification of suitable Voreilungs codon.
  • an improved adjustment of the voltage curve over the path of the web B1 is possible.
  • the rule concept takes place here z. B. in such a way that first by means of the actuator 16 is trying to meet the conditions of the minimum / maximum voltages and at the same time the desired voltage waveform. If this is not possible solely by acting on the actuator 16, the actuator 05 is included.
  • Fig. 5 is essentially self-explanatory, the sequence for the control processes 18.x using the example of the control process 18.1. Without repeating again above, it is clear that a default value, in particular for the measuring point 06 before the funnel inlet, is read from the control process 19. This current default value is compared with the last valid one and changed in deviation one or more for the subsequent calculations underlying assignment diagrams, in particular postponed. The following calculations, for example, a setpoint shift for the intake 02 and / or the calculation of a Ceizenver ein the drawbar 05 are then based on the unchanged or changed mapping diagrams or the unchanged or changed mapping diagram using fuzzy logic after the measured values S1.2, S1.3 and possibly S1.1 were read.
  • FIG. 6 Schematically is in Fig. 6 the principle of the above-mentioned change or shift an assignment diagram shown.
  • a measured value Sm has first values for the weighting of "small” and “medium” in a first state of the diagram.
  • the measured values Sm are offset by weights "small” and “medium” that deviate therefrom.
  • This change in the weighting is now reflected in the overall consideration of all fuzzy rules and eventually leads eventually to a Sollertverschiebung for the considered manipulated variable, here eg the manipulated variable S1.11 for the retraction 02.
  • a second sub-task is checked by the controller 19 and the control process 19, if the voltage in front of the harp 07 of the tracks to be led together B1; B2; B3; B4 to each other in the desired ratio and this regulated accordingly. So should z. B. the lowest on the tension roller 08 coming to train B1; B2; B3; B4, here track B3, have a higher voltage than the overlying, etc.
  • the second task is therefore the voltages of the superimposed to be led tracks B1; B2; B3; B4 to each other in the field of funnel inlet graduate or align.
  • the minimal requirement applies that S n ⁇ S n + 1 for all S1.3; S2.3; S3.3; S4.3 etc., if n a web B1; B2; B3; B4 and n + 1 the outwardly adjacent track B1; B2; B3; B4 denotes.
  • a boundary condition applies to all lanes B1; B2; B3; B4: MAX ⁇ S 1 ⁇ S 2 ⁇ S 3 ⁇ S 4 ⁇ MIN, when the index is the order of lanes B1; B2; B3; B4 in the region of the funnel inlet roller 08 from the inside out.
  • the controller 19 parallel to the controller 18.1; 18.2; 18.3; 18.4 the signals S1.3; S2.3; S3.3; S4.3 supplied the measured values for the web tension.
  • the controller 19 or control process 19 is also based on a fuzzy logic in a development, by means of which from the input variables (signals S1.3, S2.3, S3.3, S4.3) default values for the controller 18.1; 18.2; 18.3; 18.4 and signals S0.13 and S0.14 are generated for the interacting with the strand 13 actuators 08 and 10 as output variables.
  • Fig. 7 represents, again essentially self-explanatory, the sequence for the control process 19.
  • the actual sub-process for the adjustment of the voltages Sx.3 with each other preceded by a sub-process, which as shown, on the basis of the individual measured values Sx.3 checks the total web tension level and possibly on the adjustment (eg, the lead) of the funnel inlet roller 08 which raises or lowers the overall level for all over this roller 08 running tracks / partial webs.
  • the sub-process includes the steps Read in measured values - Check overall web tension level - and, depending on the result, calculate and output the adjustment of the hopper inlet roller (f) or leave it (w).
  • the controller 19 or control process 19 takes in an advantageous embodiment, no direct influence on the individual web B1; B2; B3; B4 associated with actuators 16; 05, but is based on his map from the signals S1.3 to S4.3 the controllers 18 specifications.
  • This requirement refers only to the front of the hopper roller 08 per track B1; B2; B3; B4 voltage to be respected, ie a setpoint for the z. B. at the measuring points 06 voltages to be respected.
  • These default values are incorporated in the controller 18.x, for example by changing the position and / or form of the terms with regard to the input variables during fuzzyfication (see above).
  • the control of such aggregates by the control system 17 is carried out in an advantageous embodiment, taking into account a priority: So z. B. as described above by the control system 17 in a first priority, the setpoint specification made only for the retraction 02. Are alone with this measure, the two o. G. Do not perform tasks, so there is an action on the tension roller 05 after the printing unit 03. Ggf. it is allowed in a third stage to influence the funnel inlet roller 08. In this case, however, the level of all participating lanes B1; B2; B3; B4 moved.
  • the actuators Switzerlandwalze 05 and Trichtereinlaufwalze 08 are only used if the global web tension over all tracks B1; B2; B3; B4 is not correct, or if the adjustment range of the intake 02, or its actuator 16, for the desired web tension is not sufficient.
  • control system 17 may be configured to output a warning message in the case of a strong deviation from the permissible tension profile (a path) or the gradation (of all paths) and to bring about a shutdown of the processing machine in the event of an unauthorized high deviation.
  • control system 17 operates with two measurement locations for the voltage per rail B1 involved; B2; B3; B4, in each case after the printing unit 03 and before the funnel inlet, wherein the action is carried out in each case initially at the retraction unit 02 and possibly in the second step in the region of the draw roller 05.
  • each partial web the voltage before the funnel inlet, z. B. determined in each case a separate measuring point 06.
  • a common reel changer 01 associated measurements eg. B. S1.3a and S1.3b, are either before they are fed to the control system 17 or in the control system 17, d. H. in the controller 18 and the controller 19, linked to a value, for. B. averaged with or without weighting, and the resulting value used as an actual value for regulation.
  • This link can be shown as a logical block 22 or sub-process 22 shown by dashed lines in an exemplary manner for the controller 18.1 and 19 in the respective controller 18; 19 be integrated.
  • the reel changer 01 and the retraction unit 02 preferably have, in addition to the control system 17, a closed control, to which a desired value is preset by the control system 17.
  • the draw rollers 05; 08; 10; 16 are from the control system 17 z. B. only with respect. Their override (speed, angular position) controlled.
  • the intake system 02 has a closed loop ("closed loop" control), the setpoint specification by the control system 17, in particular by the controller 18 is maintained safely. It acts on the entire track B1; B2; B3; B4 and represents the most important actuator.
  • the retraction means 02 as an actuator 16 against the traction of the web B1; B2; B3; B4 movable roller, which counteracts by means of pressure medium of a predetermined pressure of the web tension. In this case, no separate measuring point 14 is required if the correlation between the applied pressure and the resulting web tension is known.
  • the tension roller 05 can by changing the lead over the paper web speed to the web tension of the current web B1; B2; B3; B4 act here and represents the last possibility before the hopper inlet roller 8, a single web B1; B2; B3; B4 in their tension or gradation to influence.
  • the hopper inlet roller 08 can by changing the lead over the paper web speed to the web tension of all webs B1; B2; B3; B4 work.
  • the Falzzugwalze 10 can also by changing the lead over the paper web speed on the web tension of all webs B1; B2; B3; B4 work. It has a direct impact on the cut register.
  • a fuzzy PLC with program to be added The program of the controller 19, z.
  • the regulation by the regulators 18 and 19 may be parallel in purely sequential or temporal terms, but with regard to the voltage to be set in front of the hopper inlet roller 08, e.g. at the measuring points 06, the control is built hirarchisch and the controller 19 is superordinate to the controllers 18.
  • control system 17 is designed so that a found by the control system 17 setting for a particular configuration of the print job, a web path and / or a specific product can be converted as default values in the storage device, so that they in future at the same or similar Production situation can be read as start values.
  • start values For example, the takeover of the product or production data from the machine control and / or product planning takes place for this purpose.
  • the adoption as new starting values can be triggered, for example, by the decision of the operating personnel, or else by the system itself, if the control system and / or the control system are designed as a self-learning system with regard to this function.

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Feedback Control In General (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Paper (AREA)

Claims (30)

  1. Procédé pour régler des tensions mécaniques d'une bande d'un système à bandes multiples, où d'abord au moins deux bandes (B1 ; B2 ; B3 ; B4) passent chacune, séparément l'une de l'autre, au moins par un étage de traitement (03) et par un élément de traction (05) disposé en aval, pour, suite à cela, être regroupées en une rame (13), et où, tant une tension mécanique et/ou une allure de la tension mécanique de la bande (B1 ; B2 ; B3 ; B4) individuelle en soi, qu'également les tensions mécaniques des bandes (B1 ; B2 ; B3 ; B4) avant le regroupement, sont réglées en relation les unes envers les autres, caractérisé en ce que la régulation des tensions des au moins deux bandes (B1 ; B2 ; B3 ; B4) les unes par rapport aux autres s'effectuent dans un premier processus de régulation (19), et la régulation de la tension des bandes (B1 ; B2 ; B3 ; B4) individuelles s'effectue chaque fois en soi dans deux deuxièmes processus de régulation (18.x), séparés du premier processus de régulation (19) et travaillant dans son principe indépendamment de celui-ci, le premier processus de régulation (19) vérifiant les tensions des bandes (B1 ; B2 ; B3 ; B4) les unes par rapport aux autres et, en cas d'écart, délivrant, à au moins l'un des deuxièmes processus de régulation (18.x), au moins une valeur d'affectation pour une tension de bande, au moyen de laquelle la tension de la bande (B1 ; B2 ; B3 ; B4) individuelle, en soi, est réglée par l'intermédiaire d'au moins un organe de réglage (02 ; 05 ; 16).
  2. Procédé selon la revendication 1, caractérisé en ce qu'une action sur un organe de réglage (02 ; 05 ; 16), associé à la bande (B1 ; B2 ; B3 ; B4) individuelle, est accomplie au moyen du deuxième (18.x) des deux processus de régulation (18.x ; 19).
  3. Procédé selon la revendication 1, caractérisé en ce que le premier processus de régulation (19) n'exerce aucune influence directe sur les organes de réglage (02 ; 05 ; 16) associés à la bande (B1 ; B2 ; B3 ; B4) individuelle, mais au contraire, à l'aide de son champ de caractéristiques, à partir de valeurs de mesure (S1.3 à S4.3) pour les tensions avant le regroupement, fournit au régulateur (18.x) des affectations de valeurs de consigne pour la tension à respecter pour chaque bande (B1 ; B2 ; B3 ; B4) avant le regroupement.
  4. Procédé selon la revendication 3, caractérisé en ce que, dans un deuxième processus de régulation (18.x), ces affectations de valeurs de consigne sont comparées aux ultimes affectations de valeurs de consigne valides et, dans le cas d'un écart, celui-ci est pris en considération dans le cadre de la détermination de nouvelles grandeurs de réglage (Sx.11 ; Sx.12) pour au moins organe de réglage (02 ; 05 ; 16), associé à la bande (B1 ; B2 ; B3 ; B4) individuelle.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que, par suite de la constatation, dans le processus de régulation (18.x), d'un écart entre affectation de valeur de consigne nouvelle et précédente, une position et/ou une forme d'au moins un terme dans le diagramme d'association d'une fuzzification est/sont modifiée(s).
  6. Procédé selon la revendication 1, caractérisé en ce que, chaque fois, conjointement à une bande (B1 ; B2 ; B3 ; B4) menante, sa tension de bande sur son chemin de bande est réglée au moyen d'un deuxième processus de régulation (18) propre, différent du premier processus de régulation (19).
  7. Procédé selon la revendication 1, caractérisé en ce que les tensions de bande (S1.3 ; S2.3 ; S3.3 ; S4.3) actuelles des bandes (B1 ; B2 ; B3 ; B4) individuelles avant le regroupement sont amenées, en tant que grandeurs de régulation, au premier processus de régulation (19) et celui-ci, à partir de cela et à partir d'une logique mise en oeuvre dans le processus de régulation (19), génère des valeurs d'affectation pour les tensions de bande (S1.3 ; S2.3 ; S3.3 ; S4.3) actuelles des bandes (B1 ; B2 ; B3 ; B4) individuelles avant le regroupement.
  8. Procédé selon la revendication 7, caractérisé en ce que les valeurs d'affectation sont déterminées selon une prescription, selon laquelle, de deux bandes (B1 ; B2 ; B3 ; B4) arrivant sur un rouleau d'entrée en entonnoir (08), celle située le plus à l'intérieur doit présenter une tension de bande plus élevée ou, au minimum, égale.
  9. Procédé selon la revendication 7, caractérisé en ce que le premier processus de régulation (19) affecte une valeur de consigne à un organe de réglage (08 ; 10) coopérant avec la rame (13).
  10. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le premier processus de régulation (19) travaille en utilisant une logique floue.
  11. Procédé selon la revendication 1, caractérisé en ce que la tension de bande (S1.3 ; S2.3 ; S3.3 ; S4.3) actuelle de la bande (B1 ; B2 ; B3 ; B4) individuelle avant le regroupement, ainsi que la tension de bande (S1.2 ; S2.2 ; S3.2 ; S4.2) actuelle, en aval de l'étage de traitement (03) réalisé sous forme d'unité d'impression (03), sont amenées, en tant que grandeurs de régulation, au deuxième processus de régulation (18), et celui-ci, à partir de cela et à partir d'une logique mise en oeuvre dans le processus de régulation (18), génère une valeur d'affectation pour la tension de bande (S1.1 ; S2.1 ; S3.1 ; S4.1) de la bande (B1 ; B2 ; B3 ; B4) individuelle avant l'unité d'impression (03).
  12. Procédé selon la revendication 11, caractérisé en ce que, en plus, une valeur d'affectation pour la tension de bande (S1.2 ; S2.2 ; S3.2 ; S4.2) de la bande (B1 ; B2 ; B3 ; B4) individuelle après l'unité d'impression (03) est générée.
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que les valeurs d'affectation sont déterminées selon une prescription, selon laquelle la tension de bande, directement en aval de l'unité d'impression (03) et en amont du regroupement, ne descend pas au-dessous d'une tension minimale et n'excède pas une tension maximale.
  14. Procédé selon la revendication 11 ou 12, caractérisé en ce que les valeurs d'affectation sont déterminées selon une prescription, selon laquelle la tension de bande, dans la zone d'un emplacement de mesure (04) situé directement en aval de l'unité d'impression (03) et d'un emplacement de mesure (06) situé avant le regroupement, doit chaque fois être située dans une plage de tolérance prédéterminée pour cet emplacement de mesure (04 ; 06).
  15. Procédé selon la revendication 11, caractérisé en ce qu'une valeur d'affectation pour la tension de bande (S1.3 ; S2.3 ; S3.3 ; S4.3) de la bande (B1 ; B2 ; B3 ; B4) individuelle avant le regroupement est amenée au deuxième processus de régulation (18) par le premier processus de régulation (19).
  16. Procédé selon la revendication 1, caractérisé en ce que le deuxième processus de régulation (18) travaille en utilisant une logique floue.
  17. Procédé selon les revendications 11 et 12, caractérisé en ce que la valeur d'affectation du premier processus de régulation (19) provoque une modification de la position et/ou de la forme d'au moins un terme pour la description linguistique de la fuzzification dans le deuxième processus de régulation (18).
  18. Procédé selon la revendication 1, caractérisé en ce que, avant ou, au plus tard, au moment du démarrage de la machine de traitement, des valeurs d'affectation pour des tensions mécaniques dans les bandes sont transmises à au moins l'un des régulateurs (18 ; 19).
  19. Procédé selon la revendication 1, caractérisé en ce que les deux processus de régulation (18.x ; 19) sont conduits parallèlement et chacun en soi, en boucles.
  20. Dispositif pour régler des tensions mécaniques d'une bande d'un système à bandes multiples, avec un système de régulation (17) pour le réglage de la tension de bande d'au moins deux bandes (B1 ; B2 ; B3 ; B4) à guider ensemble après le passage d'un étage de traitement (03), caractérisé en ce que le système de régulation (17) présente un premier régulateur (19) et deux deuxième régulateurs (18), différents du premier régulateur (19) et travaillant dans leur principe indépendamment du premier cité, en ce que les deuxièmes régulateurs (18) sont réalisés de manière à, à l'aide de valeurs de mesure pour la tension de bande d'une bande (B1 ; B2 ; B3 ; B4) individuelle, remplir une tâche de régulation orientée sur la bande (B1 ; B2 ; B3 ; B4) individuelle, et le premier régulateur (19) est réalisé de manière à remplir une tâche de régulation orientée sur toutes les bandes (B1 ; B2 ; B3 ; B4) à guider ensemble et, à l'aide de valeurs de mesure pour la tension de bande de toutes les bandes (B1 ; B2 ; B3 ; B4) à guider ensemble, générer une valeur d'affectation pour le premier régulateur (18) cité.
  21. Dispositif selon la revendication 20, caractérisé en ce que seul le deuxième régulateur (18) est en liaison fonctionnelle directe avec un organe de réglage (02 ; 05 ; 16) associé à la bande (B1 ; B2 ; B3 ; B4) individuelle.
  22. Dispositif selon la revendication 20, caractérisé en ce qu'au moins un nombre, correspondant au nombre de la totalité de bandes (B1 ; B2 ; B3 ; B4) à guider ensemble, de deuxièmes régulateurs (18.1 ; 18.2 ; 18.3 ; 18.4) est prévu.
  23. Dispositif selon la revendication 22, caractérisé en ce qu'un premier régulateur (19) commun est associé au nombre de deuxièmes régulateurs (18.1 ; 18.2 ; 18.3 ; 18.4).
  24. Dispositif selon la revendication 20, caractérisé en ce que l'étage de traitement (03) est réalisé sous forme d'unité d'impression (03), et un rouleau d'entrée en entonnoir (08) est prévu en amont d'un entonnoir (09).
  25. Dispositif selon la revendication 24, caractérisé en ce que chaque fois une tension de bande actuelle, d'un emplacement de mesure (04) situé en aval de l'unité d'impression (03) et d'un emplacement de mesure (06) situé en amont du rouleau d'entrée en entonnoir (08) de la même bande (B1 ; B2 ; B3 ; B4), sont amenées au deuxième régulateur (18 ; 18.1 ; 18.2 ; 18.3 ; 18.4), en tant que grandeurs d'entrée, et en ce qu'un signal (S1.11), destiné à la régulation de la tension de bande en amont de l'unité d'impression (03) concerné, est présenté en tant que grandeur de sortie.
  26. Dispositif selon la revendication 25, caractérisé en ce que, en plus, un signal (S1.12) est présenté pour la régulation de la tension de bande en aval de l'unité d'impression (03) concernée.
  27. Dispositif selon la revendication 25, caractérisé en ce qu'une valeur d'affectation pour la tension de bande en amont du rouleau d'entrée en entonnoir (08) est amenée au deuxième régulateur (18).
  28. Dispositif selon la revendication 20, caractérisé en ce que les régulateurs (18 ; 19) sont réalisés sous forme de programmes logiciels différents, communicant ensemble, ou sous forme de deux processus dans un programme logiciel.
  29. Dispositif selon la revendication 20, caractérisé en ce que les régulateurs (18 ; 19) sont réalisés sous forme de composants physiques différents, spatialement séparés les uns des autres.
  30. Dispositif selon la revendication 20, caractérisé en ce qu'est prévu un dispositif à mémoire (21), relié au système de régulation (17), contenant des valeurs de départ pour la régulation des tensions mécaniques de bande.
EP03757666A 2002-09-27 2003-09-10 Procede et dispositif pour regler des tensions d'une bande de systeme a bandes multiples Expired - Lifetime EP1542919B1 (fr)

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DE10245587 2002-09-27
DE10245587 2002-09-27
DE10303122A DE10303122B4 (de) 2002-09-27 2003-01-27 Verfahren zur Regelung der Bahnspannung eines Mehrbahnsystems
DE10303122 2003-01-27
PCT/DE2003/002998 WO2004031059A2 (fr) 2002-09-27 2003-09-10 Procede et dispositif de regulation de la tension d'une bande de systeme a bandes multiples

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DE10303122B4 (de) 2005-10-06
DE50312712D1 (de) 2010-06-24
US20050263557A1 (en) 2005-12-01
EP1860047A1 (fr) 2007-11-28
DE10303122A1 (de) 2004-04-08
WO2004031059A2 (fr) 2004-04-15
DE50312716D1 (de) 2010-06-24
WO2004031059A3 (fr) 2004-07-15
WO2004031059B1 (fr) 2004-09-10
ATE467596T1 (de) 2010-05-15
US7787980B2 (en) 2010-08-31
EP1860047B1 (fr) 2010-05-12
ATE467597T1 (de) 2010-05-15
US20080091292A1 (en) 2008-04-17
EP1542919A2 (fr) 2005-06-22
AU2003273733A1 (en) 2004-04-23
US7322291B2 (en) 2008-01-29

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