WO2018029830A1 - Dispositif d'onduleur, procédé de détection de défaut et programme de détection de défaut - Google Patents

Dispositif d'onduleur, procédé de détection de défaut et programme de détection de défaut Download PDF

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Publication number
WO2018029830A1
WO2018029830A1 PCT/JP2016/073650 JP2016073650W WO2018029830A1 WO 2018029830 A1 WO2018029830 A1 WO 2018029830A1 JP 2016073650 W JP2016073650 W JP 2016073650W WO 2018029830 A1 WO2018029830 A1 WO 2018029830A1
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WO
WIPO (PCT)
Prior art keywords
roll
winding diameter
motor
winding
unit
Prior art date
Application number
PCT/JP2016/073650
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English (en)
Japanese (ja)
Inventor
育也 奥村
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2016/073650 priority Critical patent/WO2018029830A1/fr
Priority to JP2017503628A priority patent/JPWO2018029830A1/ja
Publication of WO2018029830A1 publication Critical patent/WO2018029830A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/10—Arrangements for effecting positive rotation of web roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension

Definitions

  • the present invention relates to an inverter device that controls a motor that rotates a winding or unwinding shaft of a roll-to-roll device, an abnormality detection method, and an abnormality detection program.
  • a roll-to-roll apparatus applied to a paper mill or a wire drawing machine winds or unwinds a web by rotating a winding or unwinding shaft by a motor.
  • the inverter device connected to such a motor controls the motor rotation speed of the winding or unwinding shaft of the roll-to-roll device by adjusting the voltage and frequency, and the line speed is controlled.
  • a detection device such as a tension sensor or a line speed detection device has been conventionally required to detect the occurrence of an abnormality typified by web breakage or mechanical failure.
  • a detection device when such a detection device is installed, the size and cost of the device are increased.
  • Patent Document 1 which is an example of the prior art, stores a tension corresponding to a winding diameter in a normal state and compares the measured tension with a measurement result to determine a winding control of a yarn winding machine. An apparatus is disclosed.
  • the present invention has been made in view of the above, and an object thereof is to obtain an inverter device capable of detecting an abnormality regardless of an operation pattern.
  • the present invention is an inverter device that controls a motor connected to an AC power source and connected to a winding or unwinding shaft of a roll-to-roll device.
  • a converter unit that converts alternating current from the power source into direct current
  • an inverter unit that converts direct current from the converter unit into alternating current and outputs alternating current to the motor, and detects an abnormality in the roll-to-roll device and outputs an abnormal signal
  • An abnormality detection unit includes a torque winding diameter ratio estimation unit that estimates a torque winding diameter ratio that is a ratio of motor torque to a winding diameter, and a comparison unit that compares the torque winding diameter ratio reference value and the torque winding diameter ratio. It is characterized by.
  • the inverter device according to the present invention has an effect that abnormality can be detected regardless of the operation pattern.
  • the block diagram which shows the example of 1 structure of the abnormality detection part with which the inverter apparatus which concerns on Embodiment 2 is provided.
  • Flowchart showing an abnormality detection method according to the second embodiment The figure which shows one general structural example of the hardware which implement
  • FIG. 1 is a diagram illustrating a configuration example of an inverter device and peripheral devices according to Embodiment 1 of the present invention.
  • An inverter device 10 shown in FIG. 1 includes a converter unit 11, an inverter unit 12, an inverter control unit 13, and an abnormality detection unit 14.
  • the converter unit 11 is connected to an AC power supply 20, and the inverter unit 12 is a motor 30. It is connected to the.
  • the converter unit 11 converts alternating current from the alternating current power source 20 into direct current.
  • the inverter unit 12 converts the direct current from the converter unit 11 into an alternating current and outputs an alternating current to the motor 30.
  • the inverter control unit 13 controls on / off of a switching element (not shown) included in the inverter unit 12.
  • the abnormality detection unit 14 stores an abnormality detection program, performs a winding diameter calculation, and detects an abnormality in the roll-to-roll device 50. Then, the abnormality detection unit 14 outputs an abnormality signal to the outside including the host controller.
  • the motor 30 is connected to a speed reducer 40, and the speed reducer 40 is connected to a winding or unwinding shaft 54.
  • the reduction gear 40 should just be provided as needed, and is not an essential structure.
  • the roll-to-roll device 50 includes a dancer roll 51, guide rolls 52 and 53 arranged on both sides of the dancer roll 51, a winding or unwinding shaft 54, and a web 55.
  • the take-up or unwinding shaft 54 is connected to the speed reducer 40 and is rotated by the motor 30 to wind or unwind the web 55.
  • FIG. 2 is a block diagram showing a configuration example of the abnormality detection unit 14 shown in FIG.
  • the abnormality detection unit 14 illustrated in FIG. 2 includes a winding diameter calculation unit 140, a parameter storage unit 141, a motor torque calculation unit 142, a torque winding diameter ratio estimation unit 143, a normal torque winding diameter ratio storage unit 144, And a comparison unit 145.
  • the winding diameter calculation unit 140 calculates the winding diameter r by an actual line speed calculation method based on the line speed.
  • a line speed command output from the inverter control unit 13 or a detection speed of a line speed detector (not shown) is used.
  • the line speed detector is not necessary.
  • a line speed detector (not shown) is provided in the inverter device 10.
  • the motor rotation speed wfb uses a motor rotation speed detected by an encoder (not shown) or a speed estimation value from the inverter control unit 13.
  • An encoder (not shown) is provided in the motor 30.
  • the gear ratio z is a fixed value determined by the device configuration, in particular, the speed reducer 40, and thus is preset and stored in the parameter storage unit 141.
  • FIG. 3 is a block diagram showing a configuration example of the abnormality detection unit 14a having a different form from the abnormality detection unit 14 shown in FIG.
  • the abnormality detection unit 14a illustrated in FIG. 3 is different in that a winding diameter calculation unit 140a is provided instead of the winding diameter calculation unit 140, and a parameter storage unit 141a is provided instead of the parameter storage unit 141.
  • the winding diameter calculation unit 140a shown in FIG. 3 calculates the winding diameter r by a thickness calculation method based on the integration of the material thickness.
  • the winding thickness r [mm] which is the radius of the winding or unwinding shaft 54, is calculated by the following equation (2) using the material thickness d [mm] of the web 55 that has been wound or unwound.
  • r1 [mm] is the initial radius of the winding or unwinding shaft 54, that is, the initial winding diameter that is the radius of the winding or unwinding shaft 54 before winding or unwinding.
  • N is the roll rotation speed
  • z is the gear ratio.
  • the material thickness d is a known fixed value determined by the material of the web 55, and is stored in the parameter storage unit 141a in advance.
  • the initial winding diameter r1 is a known fixed value determined by the apparatus configuration, particularly the winding or unwinding shaft 54, and is stored in advance in the parameter storage unit 141a.
  • the roll rotation speed N is output from an encoder (not shown) attached to the winding or unwinding shaft 54.
  • the gear ratio z is set in advance and stored in the parameter storage unit 141a as in FIG.
  • the web tension F is represented by the following formula (3).
  • the motor torque calculation unit 142 outputs a motor torque T estimated using the excitation current and the torque component current calculated by performing coordinate conversion between the output current of the motor 30 and the motor constant stored in the parameter storage unit 141a. .
  • the output current of the motor 30 is output from a current detector (not shown) provided on the output side of the inverter unit 12.
  • the torque winding diameter ratio estimation unit 143 uses the motor torque T and the winding diameter r estimated by the above formula (1) or (2) to estimate the torque winding that is the ratio of the motor torque T to the winding diameter r. Estimate the diameter ratio.
  • the normal torque winding diameter ratio storage unit 144 stores, as a reference, a normal torque winding diameter ratio that is a relationship between the motor torque T and the winding diameter r measured in advance during normal operation. Since the normal torque winding diameter ratio is a reference value for determining abnormality, it is also described as a torque winding diameter ratio reference value.
  • the comparison unit 145 compares the estimated torque winding diameter ratio with the normal torque winding diameter ratio.
  • the comparison unit 145 determines that there is an abnormality based on the comparison result between the normal torque winding diameter ratio and the estimated torque winding diameter ratio and the abnormality determination setting value
  • the comparison unit 145 outputs an abnormality signal.
  • an abnormality signal is output. This abnormality signal is output to the outside, typically to the host controller, and the user grasps the occurrence of the abnormality.
  • the abnormality determination set value is set in advance and stored in the comparison unit 145.
  • FIG. 4 is a diagram showing a torque winding diameter straight line representing a torque winding diameter ratio during normal operation with the winding diameter r as the horizontal axis and the motor torque T as the vertical axis.
  • the normal measurement value straight line stored in advance is represented by a solid line
  • the current estimated value straight line is represented by a broken line, which are not separated from each other. Therefore, in FIG. 4, it is determined that the operation is normal, and no abnormal signal is output.
  • FIG. 5 is a diagram showing a torque winding diameter straight line representing a torque winding diameter ratio when an abnormality occurs, with the winding diameter r as the horizontal axis and the motor torque T as the vertical axis.
  • the normal measurement value straight line stored in advance is represented by a solid line
  • the current estimated value straight line is represented by a broken line, and they are separated from each other. Therefore, in FIG. 5, it is determined that an abnormality has occurred, and an abnormal signal is output.
  • FIG. 6 is a flowchart showing the abnormality detection method according to the first embodiment.
  • the abnormality detection method according to the first embodiment is an abnormality detection method for a roll-to-roll device 50 including a winding or unwinding shaft 54 connected to a motor 30 or a speed reducer 40 controlled by an inverter device 10.
  • the winding diameter r of the winding or unwinding shaft 54 is calculated (S11)
  • the motor torque T of the motor 30 is calculated (S12)
  • the torque winding diameter ratio that is the ratio of the motor torque T to the winding diameter r is estimated.
  • S13 The torque winding diameter ratio during normal operation measured in advance is compared with the estimated torque winding diameter ratio (S14).
  • an abnormality signal is output (S15).
  • the calculation of the winding diameter r of the winding or unwinding shaft 54 is performed by the above-described actual line speed calculation method or thickness calculation method.
  • An abnormality detection program for causing a computer to execute this abnormality detection method is also included in the present invention.
  • the inverter device including the abnormality detection unit can detect an abnormality only with the motor torque and the winding diameter, and thus can detect an abnormality independent of the operation pattern. Therefore, the adjustment work for the initial value, which is necessary in the prior art depending on the operation pattern, is unnecessary.
  • the roll-to-roll device controls the air cylinder using the tension of the dancer roll as a command from the inverter device, it is possible to detect an abnormality regardless of the material of the web.
  • the winding diameter calculation unit 140 and the motor torque calculation unit 142 are provided in the inverter device, there is an effect that abnormality detection is possible with the inverter device alone.
  • the present invention is not limited to this, and values calculated by an external host controller may be used for the winding diameter and the motor torque. Even when the calculated value is used, an effect that abnormality detection is possible regardless of the operation pattern can be obtained.
  • Embodiment 2 the torque winding diameter ratio is compared, but the abnormality can be detected by comparing the tension command value and the estimated tension value.
  • an inverter device that detects an abnormality by comparing a tension command value and a tension estimated value will be described.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the inverter device according to the second embodiment is simply omitted from the configuration shown in FIG. 1 because the abnormality detection unit 14 is replaced with the abnormality detection unit 14b.
  • FIG. 7 is a block diagram illustrating a configuration example of the abnormality detection unit included in the inverter device according to the second embodiment.
  • the abnormality detection unit 14b illustrated in FIG. 7 includes a winding diameter calculation unit 140, a parameter storage unit 141, a motor torque calculation unit 142, a tension calculation unit 146, and a tension comparison unit 147 that is a comparison unit.
  • symbol is attached
  • the tension calculator 146 receives the winding diameter r and the motor torque T and outputs the estimated tension value calculated by the above equation (3).
  • the tension comparison unit 147 constantly compares the estimated tension value output from the tension calculation unit 146 with the tension command value output from the inverter control unit 13, and the estimated tension value and the tension command value are stored in the abnormality determination. When the set value is exceeded, an abnormal signal is output.
  • FIG. 8 is a block diagram illustrating a configuration example of the abnormality detection unit 14c having a different form from the abnormality detection unit 14b illustrated in FIG.
  • the abnormality detection unit 14c illustrated in FIG. 8 includes a winding diameter calculation unit 140a, a parameter storage unit 141a, a motor torque calculation unit 142, a tension calculation unit 146, and a tension comparison unit 147. Since all the configurations shown in FIG. 8 have already been described, the above description is incorporated.
  • FIG. 9 is a diagram showing a tension line representing the time change of the web tension during normal operation with the time t as the horizontal axis and the web tension F as the vertical axis.
  • the tension command value is represented by a solid line and the estimated tension value is represented by a broken line, and the two are not separated. Therefore, in FIG. 9, it is determined that the operation is normal, and no abnormal signal is output.
  • FIG. 10 is a diagram showing a tension line representing the time change of the web tension at the time of occurrence of an abnormality with the time t as the horizontal axis and the web tension F as the vertical axis.
  • the tension command value is represented by a solid line
  • the estimated tension value is represented by a broken line
  • the two are separated from each other. Therefore, in FIG. 10, it is determined that an abnormality has occurred, and an abnormal signal is output.
  • the second embodiment includes an abnormality detection method.
  • FIG. 11 is a flowchart showing the abnormality detection method according to the second embodiment.
  • the abnormality detection method according to the second embodiment is an abnormality detection method for a roll-to-roll device 50 including a winding or unwinding shaft 54 connected to the motor 30 or the speed reducer 40 controlled by the inverter device 10.
  • the winding diameter r of the winding or unwinding shaft 54 is calculated (S21)
  • the motor torque T of the motor 30 is calculated (S22)
  • the web tension F is estimated from the winding diameter r and the motor torque T (S23).
  • the tension command value is compared with the estimated estimated tension value (S24).
  • an abnormality signal is output (S25).
  • the calculation of the winding diameter r of the winding or unwinding shaft 54 is performed by the above-described actual line speed calculation method or thickness calculation method.
  • An abnormality detection program for causing a computer to execute this abnormality detection method is also included in the present invention.
  • the abnormality can be detected without depending on the operation pattern and the web material even by comparing the tension command value and the estimated tension value.
  • the abnormality determination units 14, 14a, 14b, and 14c include at least a processor, a memory, a receiver, and a transmitter, and the operation of each device is realized by software. be able to.
  • FIG. 12 is a diagram illustrating a general configuration example of hardware that realizes the abnormality determination unit included in the inverter device according to the first and second embodiments.
  • the apparatus illustrated in FIG. 12 includes a processor 201, a storage circuit 202, a receiver 203, and a transmitter 204.
  • the processor 201 performs calculation and control by software using received signals and parameters, and the storage circuit 202 receives Data or software necessary for the calculation or control of the data or the processor 201 is stored.
  • the receiver 203 is an interface that receives a signal or information input to the abnormality determination unit.
  • the transmitter 204 is an interface that transmits a signal or information output from the abnormality determination unit. Note that a plurality of processors 201, storage circuits 202, receivers 203, and transmitters 204 may be provided.
  • the inverter devices described in the first and second embodiments can detect a tension abnormality alone. Therefore, the roll-to-roll device can be downsized. It is also possible to reduce the manufacturing cost of the roll-to-roll apparatus.
  • the configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Inverter Devices (AREA)

Abstract

La présente invention concerne un dispositif d'onduleur qui est pourvu de : une unité de conversion (11) qui convertit un courant alternatif provenant d'une alimentation électrique CA (20) en courant continu ; une unité d'onduleur (12) qui convertit le courant continu provenant du convertisseur (11) en courant alternatif et transmet le courant alternatif à un moteur (30) ; une unité de commande d'onduleur (13) qui commande les positions marche-arrêt de l'élément de commutation de l'unité d'onduleur (12) ; et une unité de détection de défaut (14) qui détecte un défaut dans un dispositif rouleau à rouleau (50) et émet un signal de défaut. L'unité de détection de défaut (14) est pourvue d'une unité d'estimation de couple-diamètre d'enroulement (143) qui estime le rapport couple-diamètre d'enroulement, qui est le rapport du couple moteur (T) au diamètre d'enroulement (r), et une unité de comparaison (145) qui compare le rapport couple-diamètre d'enroulement estimé à une valeur de référence de rapport couple-diamètre d'enroulement mesurée à l'avance.
PCT/JP2016/073650 2016-08-10 2016-08-10 Dispositif d'onduleur, procédé de détection de défaut et programme de détection de défaut WO2018029830A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2016/073650 WO2018029830A1 (fr) 2016-08-10 2016-08-10 Dispositif d'onduleur, procédé de détection de défaut et programme de détection de défaut
JP2017503628A JPWO2018029830A1 (ja) 2016-08-10 2016-08-10 インバータ装置、異常検出方法及び異常検出プログラム

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PCT/JP2016/073650 WO2018029830A1 (fr) 2016-08-10 2016-08-10 Dispositif d'onduleur, procédé de détection de défaut et programme de détection de défaut

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WO2018029830A1 true WO2018029830A1 (fr) 2018-02-15

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61295975A (ja) * 1985-06-24 1986-12-26 Teijin Seiki Co Ltd 糸条の切替巻取機
JPH03264358A (ja) * 1990-03-14 1991-11-25 Nireco Corp ウエブの位相制御方法および装置
JPH061509A (ja) * 1992-06-19 1994-01-11 Mutoh Ind Ltd 自動製図機等におけるロール紙残量検出方法
JPH06115760A (ja) * 1992-08-19 1994-04-26 Yaskawa Electric Corp 径演算方法
JPH1035973A (ja) * 1996-07-17 1998-02-10 Fuji Photo Film Co Ltd ウェブロールの残長計測装置
JPH10182001A (ja) * 1996-12-20 1998-07-07 Toray Eng Co Ltd 糸条製造設備
JPH1111758A (ja) * 1997-06-27 1999-01-19 Komori Corp 張力制御方法及びその装置
JP2003285972A (ja) * 2002-03-28 2003-10-07 Murata Mach Ltd 糸条巻取機の巻取制御監視装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61295975A (ja) * 1985-06-24 1986-12-26 Teijin Seiki Co Ltd 糸条の切替巻取機
JPH03264358A (ja) * 1990-03-14 1991-11-25 Nireco Corp ウエブの位相制御方法および装置
JPH061509A (ja) * 1992-06-19 1994-01-11 Mutoh Ind Ltd 自動製図機等におけるロール紙残量検出方法
JPH06115760A (ja) * 1992-08-19 1994-04-26 Yaskawa Electric Corp 径演算方法
JPH1035973A (ja) * 1996-07-17 1998-02-10 Fuji Photo Film Co Ltd ウェブロールの残長計測装置
JPH10182001A (ja) * 1996-12-20 1998-07-07 Toray Eng Co Ltd 糸条製造設備
JPH1111758A (ja) * 1997-06-27 1999-01-19 Komori Corp 張力制御方法及びその装置
JP2003285972A (ja) * 2002-03-28 2003-10-07 Murata Mach Ltd 糸条巻取機の巻取制御監視装置

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