US20060185809A1 - Actuator system for use in control of a sheet or web forming process - Google Patents

Actuator system for use in control of a sheet or web forming process Download PDF

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Publication number
US20060185809A1
US20060185809A1 US11/063,512 US6351205A US2006185809A1 US 20060185809 A1 US20060185809 A1 US 20060185809A1 US 6351205 A US6351205 A US 6351205A US 2006185809 A1 US2006185809 A1 US 2006185809A1
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United States
Prior art keywords
actuators
quality control
power
sheet
module
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.)
Abandoned
Application number
US11/063,512
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English (en)
Inventor
Rudolph Elfrink
David Doerschuk
Ralph Lorenz
Christoffer Apneseth
Jan Endresen
Guntram Scheible
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.)
ABB Ltd
ABB.
ABB Patent GmbH
ABB Research Ltd Sweden
Original Assignee
ABB.
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 ABB. filed Critical ABB.
Priority to US11/063,512 priority Critical patent/US20060185809A1/en
Assigned to ABB LTD. reassignment ABB LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ELFRINK, RUDOLPH B., DOERSCHUK, DAVID C., LORENZ, RALPH S.
Assigned to ABB PATENT GMBH reassignment ABB PATENT GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHEIBLE, GUNTRAM
Assigned to ABB RESEARCH LTD. reassignment ABB RESEARCH LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: APNESETH, CHRISTOFFER, ENDRESEN, JAN
Priority to JP2007557083A priority patent/JP2008532469A/ja
Priority to CA2601338A priority patent/CA2601338C/fr
Priority to EP06735547A priority patent/EP1851379A2/fr
Priority to CN2006800055417A priority patent/CN101133209B/zh
Priority to PCT/US2006/005932 priority patent/WO2006091524A2/fr
Publication of US20060185809A1 publication Critical patent/US20060185809A1/en
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems

Definitions

  • This invention relates to systems for controlling the cross-directional profile of sheet and web materials and more particularly to a cross-directional profile system that uses actuators and in which the power and/or communication to the actuators may be wireless or contactless and/or on the same cable.
  • on-line measurements can be made to detect properties of sheet and web materials during manufacture thereof.
  • sheet is used herein including in the claims to refer to either a sheet or a web.
  • on-line measurements are made to enable prompt control of sheet and web making processes and, thus, to enhance sheet quality while reducing the quantity of substandard sheet material which is produced before undesirable process conditions are corrected.
  • on-line sensors can detect variables such as basis weight, moisture content, caliper, coating weight, finish, color, and converting of paper sheets during manufacture.
  • cross direction refers to the direction across the surface of the sheet perpendicular to the machine direction, that is, the direction of travel of the sheet material.
  • Measurement information provided by the scanning sensors is assembled for each scan to provide a “profile” of the detected property of the sheet in the cross direction.
  • Each profile thus comprises a succession of sheet measurements at adjacent locations or slices, the profile extending generally in the cross direction.
  • cross directional variations in sheet properties can be detected.
  • appropriate control adjustments can be made to the sheet making machine.
  • Such adjustments are made by pluralities of cross directional actuators, such as motor driven slice lip profile control actuators located at the discharge of the headbox of a paper machine; inductive heaters for controlling the diameters of calender and/or other paper machine rollers along the length thereof; and coating blade actuators for controlling the CD weight profiles of coatings applied to one or both surfaces of the paper.
  • Pluralities of cross directional actuators are also used in other industrial sheet forming processes such as plastic extrusion, metal rolling, etc.
  • the actuators are used to adjust, flatten and shape the cross direction properties, such as density, moisture content, thickness, and optical properties, of the sheets that are being manufactured.
  • these cross direction actuators will number from 20 to over 200 at one location on the sheet forming machine. There may be several actuator systems at various locations along the sheet formation process.
  • a sheet forming system that comprises:
  • one or more quality control systems for use in forming the sheet
  • At least one actuator driven device having a plurality of actuators each associated with formation of the sheet
  • a drive signal module connected to at least one of the one or more quality control systems for providing bi-directional communications between the at least one quality control system and each of the plurality of actuators.
  • a sheet forming system that comprises:
  • a quality control part that has:
  • one or more quality control systems for use in forming the sheet
  • a modulator/demodulator associated with at least one of the one or more quality control systems
  • an actuator driven part that has:
  • At least one actuator driven device having a plurality of actuators each associated with formation of the sheet, each of the actuators comprising a modulator/demodulator;
  • a cable for providing an electric power signal from the quality control part to the actuator driven part, the cable connected to the modulator/demodulator associated with the at least one of the one or more quality control systems for modulating the electric power signal to carry communication signals from the quality control part for the actuator driven part;
  • each of the plurality of actuators further comprising means for receiving the modulated electric power signals from the quality control part without having the cable physically connected to each of the plurality of actuators, the modulator/demodulator associated with each of the plurality of actuators for demodulating the communications signals.
  • a sheet forming system that comprises:
  • a quality control part that has:
  • one or more quality control systems for use in forming the sheet
  • a power and communications module including a modulator/demodulator associated with at least one of the one or more quality control systems
  • an actuator driven part that has:
  • At least one actuator driven device having a plurality of actuators each associated with formation of the sheet, each of the actuators comprising a modulator/demodulator;
  • a cable for providing an electric power signal from the quality control part to the actuator driven part, the cable connected to the modulator/demodulator associated with the at least one of the one or more quality control systems for modulating the electric power signal to carry communication signals from the quality control part for the actuator driven part and to each of the actuator modulator/demodulators.
  • a sheet forming system that comprises:
  • one or more quality control systems for use in forming the sheet
  • At least one actuator driven device having a plurality of actuators each associated with formation of the sheet
  • a cable physically connecting the power providing module to each of the plurality of actuators; and a drive signal module connected to at least one of the one or more quality control systems for providing bi-directional wireless communications between the at least one quality control system and each of the plurality of actuators.
  • FIG. 1 shows a typical sheet forming machine such as a papermaking machine and various actuator driven profilers that may be used on the machine.
  • FIG. 2 shows in block diagram form one or more quality control systems connected to a machine for making a sheet such as paper, one or more scanners and various special function machines associated with the making of the sheet.
  • FIG. 3 shows an embodiment for the present invention in which there are a wireless connection of power and two way communications between a quality control system and one or more actuator driven devices and FIG. 3 a shows an embodiment in which the connection of power is contactless.
  • FIG. 4 shows an embodiment for the present invention where power is supplied to the actuators and bi-directional communication between the control quality systems and the actuators are both accomplished in a contactless manner over a power cable.
  • FIG. 5 shows an embodiment for the present invention where a single cable is connected to the actuators to provide both electric power and bi-directional communication between the control quality systems and the actuators.
  • FIG. 6 shows an embodiment for the present invention where electric power is provided to all of the actuators over a cable and bi-directional communication between the control quality systems and the actuators is provided by the wireless antenna system of FIG. 3 .
  • FIG. 1 there is shown a typical papermaking machine 10 and various actuator driven profilers 12 , 14 , 16 , 18 , 20 , 22 , 24 and 26 that may be use on machine 10 .
  • machine 10 as is well known to those of ordinary skill in the art will include an actuator driven dilution profiler 12 and an actuator driven slice profiler 14 associated with headbox 10 a .
  • the headbox 10 a feeds a pulp suspension onto the initial part of a lower wire (not shown in FIG. 1 ).
  • the actuator driven profilers 12 and 14 and others of the actuator driven profilers described herein are used to control the transverse profile of the suspension.
  • Papermaking machine 10 also includes a Fourdrinier table 10 b and a press section 10 c that may include one or more actuator driven steam profilers such as profiler 16 of FIG. 1 .
  • the moisture profile in the cross-machine direction (CD) is one of many important qualities of paper products. It is not only important that the overall moisture level be controlled, but also that the moisture distribution throughout the sheet be controlled both in the direction that the sheet is moving known as the machine direction (MD) and in the CD. Variation in moisture content of the sheet will often affect paper quality as much or even more than the absolute moisture content.
  • Steam showers profilers such as profiler 16 are conventional profiling systems that work by selectively delivering steam onto the paper web during production.
  • Profiling steam showers deliver a variable distribution of steam in zones across the paper web. The amount of steam passing through each zone of a steam shower is adjusted through an actuator located in that zone.
  • Steam showers are widely used on the Fourdrinier table 10 b to help drainage and increase production.
  • the press section 10 c steam is added before the press nips to increase the temperature of the web.
  • the added temperature makes the water removal by pressing much more effective as the added moisture removal is much greater than the added moisture due to steam condensation.
  • Further downstream machine 10 may also include an actuator driven air water profiler 18 , a calender profiler 20 , a coat weight profiler 22 , a finishing profiler 24 and an induction profiler 26 .
  • Profiling steam showers such as calender profiler 20
  • Moisture spray systems such as air water profiler 18
  • the water spray systems are designed to apply a profile of moisture spray in the cross-machine direction to counter an undesirable moisture profile in the paper web.
  • These systems consist of a series of flow-controlling actuators capable of independently adjusting the amount of spray in discrete adjacent zones in the CD.
  • the induction profiler 26 is used for heating the paper roll to provide caliper and gloss control.
  • FIG. 1 shows a papermaking machine 10 with various actuator driven profilers 12 to 26 it is well known to those of ordinary skill in the art that some of those actuator driven profilers may be used on special functions machines other than machine 10 , such as a blade coater or a supercalender or a slitter winder, that are also associated with papermaking. This use is shown in block diagram form in FIG. 2 .
  • one or more quality control systems (QCS) 30 a and 30 b are connected by suitable means 32 which may be a physical cable or a wireless connection as described below to a paper machine 34 , a blade coater 36 , a supercalender 38 , one or more scanners 40 a and 40 b and a converter 42 .
  • Paper machine 34 may have edge control actuators and various actuator driven profilers such as the slice profiler, dilution profiler, steam profiler, air water profiler, coat weight profiler and induction profiler shown in FIG. 1 .
  • Blade coater 36 has an actuator driven coat weight profiler
  • supercalender 38 has actuator driven steam and induction profilers
  • converter 42 has an actuator driven slitter winder.
  • the actuators of each of the one or more actuator driven profilers in papermaking machine 10 or the various actuators described in connection with the machines shown in block diagram form in FIG. 2 receive power and engage in bi-directional communications with the QCS system such as systems 30 a and 30 b of FIG. 2 as follows:
  • FIG. 3 there is shown in simplified block diagram form the embodiment where no cables are physically connected to the actuators are used to transmit power to the actuators and no cables are physically connected to the actuators are used for bi-directional communication between the actuators and one or more QCSs.
  • the embodiment shown in FIG. 3 uses a technique referred to as “wireless” for both the transmission of power and the bi-directional communications and thus the embodiment as a whole is said to be wireless.
  • Bi-directional communication with one or more QCSs such as QCS 30 a and/or QCS 30 b of FIG. 2 takes place through a primary signal antenna 44 which is in close proximity to the array 46 of actuators 46 a , 46 b , 46 c . . . 46 n and by an antenna (not shown in FIG. 3 ) which is located in each of the actuators.
  • the primary signal antenna 44 interfaces with the one or more QCSs through a signal drive antenna module 48 .
  • Power is transmitted to each of the actuators 46 a to 46 n from power drive module 49 by a transformer arrangement where the secondary side of the transformer is embedded in each actuator 46 a to 46 n and the primary side 47 of the transformer is located outside of the actuator.
  • a closed magnetic path may be used to transmit power to each of the actuators by using small ring types cores 45 that consist of two half circle parts 45 a and 45 b .
  • One of the half circle parts carries the secondary winding 45 c and the half circle parts can be clipped together around the primary coil wire 45 d .
  • the arrangement shown in FIG. 3 a uses a technique referred to as “contactless” for the transmission of power.
  • the embodiment shown in FIG. 3 is wireless as to both transmission of power and bi-directional communications and the embodiment of FIG. 3 a is wireless as to bi-directional communications and contactless as to the transmission of power as in both embodiments power supplied to and bi-directional communication with each of the actuators 46 a to 46 n does not require the physical connection of a communication cable and a power cable to each of the actuators as in the systems of the prior art.
  • FIG. 3 A subset of the embodiment shown in FIG. 3 is where the power is supplied to each of the actuators in the wireless or contactless manner shown in FIGS. 3 and 3 a and the bi-directional communications between the one or more QCSs and the actuators is accomplished through a cable that is connected to each actuator as is shown in the aforementioned U.S. Pat. Nos. 5,771,174 and 5,381,341 the disclosures of which are hereby incorporated herein by reference.
  • FIG. 4 there is shown in simplified form an embodiment for the present invention wherein power is supplied to all of the actuators and bi-directional communication between the one or more QCSs and all of the actuators are both accomplished in a contactless manner over a power cable.
  • the simplified diagram of FIG. 4 shows a single actuator such as for example actuator 46 a of FIG. 3 which has included therein a part of a magnetic core 50 that may be made from ferrite or a similar material with a wire 52 wound on the core.
  • the actuator also includes a modulator/demodulator 54 .
  • a power and communication cable 56 External to and not connected to the actuators is a power and communication cable 56 .
  • a modulator/demodulator (not shown in FIG. 4 ) that modulates the AC signal on the power and communication cable 56 to provide communication to all of the actuators and demodulates the communication signals modulated on the AC power signal at the actuators to receive communications from the actuators.
  • the communication and power cable 56 includes adjacent to each actuator a magnetic core 58 that may be made from ferrite or a similar material which core in combination with the magnetic core 50 embedded in each actuator forms a transformer that allows the modulated AC power signal on cable 56 to be received and demodulated by each actuator.
  • a magnetic core 58 that may be made from ferrite or a similar material which core in combination with the magnetic core 50 embedded in each actuator forms a transformer that allows the modulated AC power signal on cable 56 to be received and demodulated by each actuator.
  • the embodiment shown in FIG. 4 is also contactless as power supplied to and bi-directional communication with each of the actuators such as actuators 46 a to 46 n of FIG. 3 does not require the physical connection of a communication cable and a power cable to each of the actuators as in the systems of the prior art.
  • FIG. 5 there is shown in simplified form an embodiment 60 for the present invention wherein a cable 62 is physically connected from the source of power to each of the actuators 64 a , 64 b , 64 c in a manner well known in the art to provide power to all of the actuators and the bi-directional communications between the actuators and the one or more QCSs also occurs using cable 62 .
  • Each actuator 64 a , 64 b , 64 c includes an associated embedded modulator/demodulator 66 a , 66 b , 66 c for bi-directional communications over cable 62 with the one or more QCSs.
  • a power and communications module 68 Upstream from the actuators 64 a , 64 b and 64 c is a power and communications module 68 that includes a modulator/demodulator (not shown in FIG. 5 ) that allows power to be transmitted over cable 62 to each of the actuators and the cable to also carry the bi-directional communications between the actuators and the one or more QCSs.
  • FIG. 6 there is shown in simplified form an embodiment 70 for the present invention wherein power is provided to each of actuators 72 a , 72 b . . . 72 n over a cable 74 that is physically connected by associated connector 76 a , 76 b . . . 76 n to each of an associated one of the actuators in a manner well known in the art.
  • a power drive module 78 provides the power to cable 72 .
  • Bi-directional communication between each of the actuators 72 a , 72 b . . . 72 n and the one or more QCSs is provided wirelessly by the antenna system described above for the embodiment shown in FIG. 3 .
  • a signal drive antenna module 80 is connected between the one or more QCSs and the communication antenna 82 .
  • Antenna 82 is in close proximity to each of the actuators 72 a , 72 b . . . 72 n and each of the actuators include an antenna.

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  • Near-Field Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Controlling Sheets Or Webs (AREA)
US11/063,512 2005-02-23 2005-02-23 Actuator system for use in control of a sheet or web forming process Abandoned US20060185809A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US11/063,512 US20060185809A1 (en) 2005-02-23 2005-02-23 Actuator system for use in control of a sheet or web forming process
JP2007557083A JP2008532469A (ja) 2005-02-23 2006-02-21 シートまたはウエブ形成プロセスの制御の中で使用するためのアクチュエータ・システム
CA2601338A CA2601338C (fr) 2005-02-23 2006-02-21 Systeme d'actionneur destine a etre utilise pour commander un procede de formation de feuille ou de rouleau
EP06735547A EP1851379A2 (fr) 2005-02-23 2006-02-21 Systeme d'actionneur destine a etre utilise pour commander un procede de formation de feuille ou de rouleau
CN2006800055417A CN101133209B (zh) 2005-02-23 2006-02-21 用于控制片或幅形成工艺的执行器系统
PCT/US2006/005932 WO2006091524A2 (fr) 2005-02-23 2006-02-21 Systeme d'actionneur destine a etre utilise pour commander un procede de formation de feuille ou de rouleau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/063,512 US20060185809A1 (en) 2005-02-23 2005-02-23 Actuator system for use in control of a sheet or web forming process

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US20060185809A1 true US20060185809A1 (en) 2006-08-24

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US11/063,512 Abandoned US20060185809A1 (en) 2005-02-23 2005-02-23 Actuator system for use in control of a sheet or web forming process

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US (1) US20060185809A1 (fr)
EP (1) EP1851379A2 (fr)
JP (1) JP2008532469A (fr)
CN (1) CN101133209B (fr)
CA (1) CA2601338C (fr)
WO (1) WO2006091524A2 (fr)

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WO2006091524A3 (fr) 2007-01-18
CN101133209A (zh) 2008-02-27
CN101133209B (zh) 2010-10-06
WO2006091524A2 (fr) 2006-08-31
EP1851379A2 (fr) 2007-11-07
CA2601338A1 (fr) 2006-08-31
CA2601338C (fr) 2011-05-31
JP2008532469A (ja) 2008-08-14

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