EP3754079B1 - Dispositif de fourniture de fil et procédé de fourniture de fil dans une machine textile - Google Patents

Dispositif de fourniture de fil et procédé de fourniture de fil dans une machine textile Download PDF

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Publication number
EP3754079B1
EP3754079B1 EP19180938.3A EP19180938A EP3754079B1 EP 3754079 B1 EP3754079 B1 EP 3754079B1 EP 19180938 A EP19180938 A EP 19180938A EP 3754079 B1 EP3754079 B1 EP 3754079B1
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EP
European Patent Office
Prior art keywords
motor
control unit
textile machine
yarn
individual
Prior art date
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EP19180938.3A
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German (de)
English (en)
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EP3754079A1 (fr
Inventor
Filippo Oneda
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Memminger IRO GmbH
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Memminger IRO GmbH
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Publication date
Application filed by Memminger IRO GmbH filed Critical Memminger IRO GmbH
Priority to EP19180938.3A priority Critical patent/EP3754079B1/fr
Priority to TW109109345A priority patent/TWI751514B/zh
Priority to CN202010559149.9A priority patent/CN112095218B/zh
Publication of EP3754079A1 publication Critical patent/EP3754079A1/fr
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Publication of EP3754079B1 publication Critical patent/EP3754079B1/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
    • B65H51/00—Forwarding filamentary material
    • B65H51/30—Devices controlling the forwarding speed to synchronise with supply, treatment, or take-up apparatus
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
    • D04B15/48—Thread-feeding devices
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention concerns a yarn delivery device and a method for delivering yarn to a textile machine with at least two positive feeders and a common control unit according to the preamble of the independent claims.
  • a subject of the invention is to synchronize the yarn delivering of the positive feeders with the speed of the textile machine using positive feeders with electric motors.
  • the US 2005/0146294 A1 describes an electronic device for delivering yarn to textile machines, able to regulate the delivery of yarn by varying the rotating speed of at least one motor, so as to maintain the speed as synchronized as possible, according to an adjustable scale factor, with respect to the rotation speed of the textile machine.
  • the device is associated with each yarn-winding wheel for delivering each single thread to the textile machine. It includes the motor and an electronic control board of the motor equipped with at least one microcontroller, which is able to control the rotating speed of the motor and the currents in the phases of the motor and which is able to maintain the rotating speed synchronous with the rotating speed of the cylinder of the textile machine.
  • the motor is an d.c. brushless motor, which includes sensor devices for detecting the position of the rotor outside said motor.
  • the electronic control board of the motor controls a driver, which switches the phases of the motor and the current to be delivered to the phases.
  • the electronic board is able detect the input frequency coming from a first encoding device, which is engaged with the cylinder of the textile machine, in order to compare the input frequency with the output frequency deriving from a second encoding device fitted onto the shaft of the motor.
  • the second encoding device fitted onto the shaft of the motor does not allow to determine a very precise position of the motor.
  • the WO 03/031708 discloses an electronic device for regulating and controlling the delivery of yarn.
  • the device comprises a d.c. brushless motor and an electronic circuit based upon operation of a microcontroller.
  • the microcontroller calculates the difference between the number of pulses received from a first encoding element connected to the rotating axis of the motor and a second reference encoding element.
  • a yarn delivery device for knitting machines is known from the US 2007/0272784 A1 which has a yarn delivery wheel, an electric motor for the yarn delivery wheel and an angle encoder for detecting the rotated position of the yarn delivery wheel.
  • the angle encoder comprises a rotable permanent magnet M and four Hall sensors arranged in the field of the permanent magnet M. It is denoted, that angle encoders of this type are installed in some brushless electric motors in order to control electronic switches used for triggering the motor coil. It is stated that this angle encoder can be used as the position sensor for the connected control loop but this is not specified.
  • the control loop comprises a regulating circuit, an actual value input to which the angle encoder is connected and a desired value input to which a preselection unit is connected.
  • the central control device sends control pulses to the preselection unit of each device, e. g. the central control device issues individual pulses wherein each single pulse of the rotation of the electric motor by one step corresponds to the annular resolution of angle encoder.
  • the angle encoder has an angular resolution which is at least so large that the ratio s/d between the angular resolution s and the diameter d of the yarn delivery wheel is greater than 3 mm -1 .
  • the WO 2007/077389 A2 describes a system for detecting an angular pos ition of a rotating element.
  • the system uses in one example three Hall sensors which are arranged with a displacement of 120° to each other. In order to generate the angle of the position, the system uses all of the three sensor signals as sinusoidal waves. The angular resolution is mentioned as possible 1,2°.
  • the US 2010/0102765 A1 discloses methods and apparatus for deriving precision position and rate information for motors using relatively low precision analog sensors, and for implementing compensation techniques.
  • the subject of the invention is to improve the synchronization of the yarn delivering with the speed of the textile machine, especially to improve the resolution of the position determination of the motor position of the positive yarn delivering feeder for the synchronization.
  • a yarn delivery device for delivering yarn to a textile machine comprises at least two positive feeders and a common control unit.
  • Each feeder comprises a yarn delivery wheel, a brushless d.c. motor for driving the wheel and an individual control unit with at least one microcontroller.
  • the motor comprises a sensor device with Hall sensors to monitor the position of the motor in order to control coils of the motor.
  • the common control unit is designed to provide the individual control units with information about the movement of the textile machine.
  • Each individual control unit is designed to control the position of its motor in correspondence to the movement of the textile machine. It is designed to compare the monitored position of the motor with a given position of the motor corresponding to the movement of the textile machine and to adjust the currents for the coils of the motor according to a difference between both.
  • the given position of the motor is determined with respect to the movement of the textile machine, e. g. the rotating speed of a needle cylinder, and an adjustable scale or ratio factor.
  • the sensor device of each feeder is provided with three analog Hall sensors for monitoring the position of the motor are used.
  • the sensors are arranged with a displacement of 120° to each other in view of a motor axis.
  • the three analog Hall sensors are designed to generate signals as sinusoidal waves.
  • the individual control unit is designed to determine the monitored position of the motor by analyzing the three signals of sinusoidal waves with the help of their inverse trigonometric functions. It is designed to determine the monitored position of the motor by selecting the two of three signals without discontinuity for this determination, when a discontinuity of the inverse trigonometric function of one of the sinusoidal waves occur.
  • the discontinuities of the inverse trigonometric function of the sinusoidal waves are also displaced. Thereby, at each rotation angle, if so, at most one of the three inverse trigonometric functions shows a discontinuity.
  • the individual control unit is designed to determine a position of the textile machine from the movement information and to determine the given position of the motor related to the determined position of the textile machine.
  • Movement information of the textile machine are e.g. a speed signal with a pulse sequence from an encoder arranged at a motor of the knitting cylinder or at the knitting cylinder itself.
  • the individual control unit is designed to analyze the speed signal, i. e. the pulse sequence, in order to determine the speed or frequency of the knitting cylinder and to determine the position of the knitting cylinder.
  • the individual control unit is designed to assign to the position of the knitting cylinder a given position of the motor, e. g. subject to a desired knitting pattern.
  • the individual control unit is designed to control the motor using a field oriented control (which is abbreviated to "FOC") method.
  • FOC field oriented control
  • the field oriented control (FOC) used for the motor rotation needs a precise indication of the motor position.
  • Such a precise indication of the motor position is provided with the sensor device with the three analog Hall sensors, as described above.
  • the individual control is designed to regulate the position of the motor by adjusting the currents for the coils of the motor with a pulse width modulation (which is abbreviated to "PWM”.
  • PWM pulse width modulation
  • the individual unit is designed to determine the monitored position by analyzing the sinusoidal waves and to use a field oriented control (FOC) method for controlling the motor rotation by adjusting the currents for the coils of the motor.
  • FOC field oriented control
  • a method for delivering yarn to a textile machine according to the invention is suitable to use the yarn delivery device with the features and advantages described above.
  • a method for delivering yarn to a textile machine by a yarn delivery device which comprises at least two positive feeders and a common control unit, wherein each positive feeder has a yarn delivery wheel, a brushless d.c. motor for driving the wheel and an individual control unit with at least one microcontroller, comprises monitoring the position of the motor by a sensor device with Hall sensors in order to control coils of the motor, providing the individual control units with information about a movement of the textile machine by the common control unit, and controlling, in correspondence to the movement of the textile machine, the position of the motor by the individual control unit.
  • the monitored position of the motor is compared with a given position of the motor corresponding to the movement of the textile machine by the individual control unit and, according to a difference between both, the currents of the coils of the motor are adjusted by the individual control unit.
  • the method further comprises, for each positive feeder, providing signals of three analog Hall sensors of the sensor device which are arranged with a displacement of 120° to each other in view of the motor axis, as sinusoidal waves, and determining the monitored position of the motor by the individual control unit by analyzing the three signals of sinusoidal waves with the help of their inverse trigonometric functions and, if one of their inverse trigonometric functions has a discontinuity, by selecting the two of three signals without discontinuity for this determination.
  • the method comprises determining a position of the textile machine from the movement information and the given position of the motor related to the determined position of the textile machine by the individual control unit.
  • the method comprises controlling the coils of the motor by the individual electronic control unit using a field oriented control (FOC) method.
  • FOC field oriented control
  • the method comprises regulating the position of the motor by the individual electronic control unit by adjusting the currents of the coils of the motor using a pulse width modulation (PWVM).
  • PWVM pulse width modulation
  • the method comprises, for calibration, recording the shapes of the three sinusoidal waves at a given rotation speed by the individual control unit and, for synchronization, determining the position of the motor during partial rotation of the motor.
  • the size of the partial rotation depends on the number of magnetic pole pairs of the motor, wherein the size is one rotation divided by the number of magnetic pole pairs.
  • the method comprises, providing a stop signal for the textile machine by the individual control unit when a difference between the monitored and the given position of the motor is greater than 1 mm.
  • the method comprises, automatically decreasing the rotation of the motor of the feeder by its individual control unit by a given degree, when a yarn tension dropping is recognized.
  • the yarn tension is increased as quick as possible.
  • the rotation speed of the motor is decreased by a given modification of the adjustable scale or ratio factor with respect to the speed of the needle cylinder.
  • the yarn tension dropping is recognized e. g. by an output sensor of the feeder.
  • Yarn tension dropping is e. g. recognized when the speed of textile machine is reduced or when the textile machine comes to a stop.
  • Figure 1 schematically shows a yarn delivery device for delivering a yarn Y to a textile machine with several positive feeders 1 and a common control unit 2.
  • the yarn Y which is delivered by one positive feeder 1 is only shown in figure 2 .
  • the yarn delivery device is arranged at the textile machine, namely at a circular knitting machine.
  • the circular knitting machine comprises a knitting cylinder 3, a housing 4, and within the housing 4, an electrical motor 5 of the knitting cylinder 3 and a take-off device for taking-off the knitted fabric 6.
  • the take-off device has a frame 7 with an electric motor 8 and two sets of rollers 9, 10 with their electric motors 11, 12.
  • the circular knitting machine comprises a machine control unit 13 which is arranged in a second housing 14.
  • the housing is provided with a display 15.
  • the positive feeders 1 of the yarn delivering device are fixed to a machine ring 16 which is supported by a hanging device 17. Only two of the positive feeders 1 are schematically shown, the other positive feeders are indicated in figure 1 by short lines.
  • the common control unit 2 of the yarn delivering device is placed into the second housing 14.
  • the common control unit 2 is connected to each positive feeder 1 by a communication line L1.
  • the machine control unit 13 is connected to the motor 5 by a second communication line L2, to the common control unit 2 by a third communication line L3, to the two motors 11 of the rollers 9 by communication lines L4, L5 and to the two motors 12 of the rollers 10 by communication lines L6, L7.
  • Each positive feeder 1 comprises a feeder housing 20, yarn delivery wheel 21, a brushless d.c. motor 22 for driving the wheel 21 and an individual control unit 23.
  • the motor 22 and the individual control unit 23 are arranged inside the feeder housing 20 shown by dashed lines.
  • a shaft A of the motor 22 on which the driving wheel 21 is fixed is also shown by dashed lines.
  • the positive feeder 1 is provided with a fastening device 24 to fasten the feeder 1 to the machine ring 16. It is also provided with an eyelet 25 for the yarn Y, a braking device 26, an input sensor 27 and an output sensor 28.
  • the motor 22 has a sensor device S with three analog Hall sensors to monitor the position of the motor 22 in order to control coils of the motor.
  • the sensors are arranged with a displacement of 120° to each other in view of a axis of the motor shaft A, i.e. the motor axis.
  • the three analog Hall sensors of the sensor device 4S are designed to generate signals as sinusoidal waves W1, W2 and W3.
  • Figure 3 shows the sinusoidal waves W1, W2 and W3 as a function of the rotation angle ⁇ .
  • One sinus curve of e. g. the sinusoidal waves W1 corresponds to a period p of one pole pair of the motor 22.
  • the motor 22 has at least five magnetic pole pairs. In this embodiment, the motor 22 has seven pole pairs of rotor permanent magnets and stator coils.
  • the individual control unit 23 is designed as an electronic control unit with at least one microcontroller.
  • the individual control unit 23 is designed to precisely determine the monitored position of the motor 22 by analyzing the three signals of sinusoidal waves W1, W2, W3 with the help of their inverse trigonometric functions. It is designed to select the two of three signals without discontinuity for this determination.
  • the individual control unit 23 is designed to determine values of the motor position at each angle ⁇ , i. e. at each point of the sinusoidal waves W1, W2 and W3.
  • the resolution of the monitored motor position is only limited by the provided number of bits for the values of the motor position.
  • the values of the motor position for each pole pair is monitored by a 16-bit variable.
  • the resolution of the motor position is 5,5° 10 -3 per pole pair p. In this case of seven pole pairs, the resolution is 7,85° 10 -4 .
  • the individual control unit 23 is designed to control the motor 22 using a field oriented control (FOC) method and to regulate the position of the motor by adjusting the currents for the three coils of the motor 22 with a pulse width modulation PWM
  • the individual control unit 23 is designed to determine a position of the textile machine from the movement information and to determine the given position of the motor 22 related to the determined position of the textile machine.
  • Movement information of the textile machine namely of a circular knitting machine, is e.g. a speed signal with a pulse sequence from encoder (not shown in figure 1 ) arranged at the motor 5 of the knitting cylinder 3.
  • the encoder is connected to the individual control unit via the communication line L2, the machine control unit 13 and the communication line L3. In another alternative, the encoder is connected to the individual control unit 23 via a separate communication line (not shown in figure 1 ).
  • the individual control unit 23 is designed to analyze the speed signal, i. e. the pulse sequence, in order to determine the speed or frequency of the knitting cylinder and with that the position of the knitting cylinder.
  • the individual control unit 23 is designed to assign to the position of the knitting cylinder a given position of the motor, subject to a desired knitting pattern.
  • the individual control unit 23 is designed to compare the monitored position of the motor with the given position of the motor 22 corresponding to the movement of the textile machine and to adjust currents for the coils of the motor according to a difference between both.
  • the individual unit 23 is designed to precisely determine the monitored position by analyzing the sinusoidal waves W1, W2, W3 and to control the motor rotation by using a field oriented control (FOC) method and by adjusting the currents for the coils of the motor 22 with the pulse width method PWM
  • each positive feeder 1 comprises a yarn delivery wheel 21, a brushless d.c. motor 22 for driving the wheel 21 and an individual control unit 23 with at least one microcontroller, by
  • each of the three signals of sinusoidal waves W1, W2, W3 results in three monitored rotation angles ⁇ i phase-shifted of 120°.
  • the inverse trigonometric functions of the monitored sinusoidal waves W1, W2, W3 are calculated and stored in a data reducing form, from which the rotation angles ⁇ i are reconstructed. Discontinuities could arise using the reduced data. If a discontinuity arises, the data of the two of three signals without discontinuity are selected for this determination.
  • a position of the textile machine from the movement information and the given position of the motor 22 related to the determined position of the textile machine are determined by the individual control unit 23.
  • the coils of the motor 22 are controlled by the individual electronic control unit 23 using a field oriented control (FOC) method.
  • FOC field oriented control
  • the position of the motor 22 is regulated by the individual electronic control unit 23 by adjusting the currents of the coils of the motor 22 using a pulse width modulation PWM.
  • Figure 4 shows a block diagram of a calibration procedure which is executed by the each individual control unit 23 for its motor 22.
  • the calibration procedure is executed once after a first start which is initialized as Start1 command.
  • a synchronization procedure is initialized by a Start2 command.
  • the rotation of the motor 22 is controlled in order to rotate with a rotation speed of e. g. 200 rotations per minute, i. e. 200 rpm.
  • the sinusoidal waves W1, W2, W3 are analyzed. It is checked, if a certain start value, e. g. an minimum value W2 min of the sinusoidal wave W2, is reached. If no, the analysis is proceeded.
  • a certain start value e. g. an minimum value W2 min of the sinusoidal wave W2
  • the calibration data CD of one full rotation of the motor 22, i. e. the values of the sinusoidal waves W1, W2 and W3 of all periods p of the pole pairs, are recorded once.
  • the calibration data CD are stored in a non-volatile memory of the individual control unit 23.
  • the shapes of the three sinusoidal waves W1, W2, W3 of one full rotation of the motor 22 are recorded at a given rotation speed as values of the sinusoidal waves W1, W2, and W3 depending on the rotation angle ⁇ , named calibration data CD, by the individual control unit 23.
  • the calibration data CD are used to overcome deviation of the measured sinusoidal waves W1, W2, W3 from normal conditions, e. g. due to mechanical tolerances during motor assembling process, inequalities in rotor magnets and deviation of the arrangement of the three Hall sensors from their 120° displacement.
  • Figure 5 shows a block diagram of the synchronization procedure which is executed by the each individual control unit 23 for its motor 22.
  • the synchronization procedure is initialized as Start2 command at each activation of the yarn delivering with the Start1 command, if calibration data CD of the motor 22 are recorded.
  • the values of the sinusoidal waves W1, W2 and W3 are reset.
  • values Wi(p) of the sinusoidal waves W1, W2 and W3 are recorded and checked if one full period p corresponding to one pole pair is recorded. If no, the recording is continued.
  • the recorded values Wi(p) are analyzed and compared with the calibration data CD in order to determine the period P of the calibration data CD(P) to which the recorded values Wi(p) match best.
  • the position of the motor 22 is determined with the help of the calibration data CD(P).
  • the recorded values Wi(P) are assigned to the position of the motor 22, i. e. its angle ⁇ for the following operation.
  • the position of the motor 22 is determined with the help of the calibration data CD during a partial rotation of the motor 22, i. e. one full period p corresponding to one pole pair.
  • the recorded values Wi(p) are analyzed e. g. by determining characteristic terms, such as peak-to-peak terms ⁇ Ap.
  • the characteristic term are compared with corresponding terms, such as peak-to-peak terms ⁇ A0, ⁇ A1, ..., of the calibration data CD of the periods P0, P1, .. of the pole pairs in order to determine the period P with the calibration data CD(P) to which the recorded values Wi(p), especially their peak-to-peak terms ⁇ Ap, match best.
  • the period P with the calibration data CD(P) with the lowest differences of the peak-to-peak terms ⁇ A min of the recorded values Wi(p) and of the calibration data CD is determined.
  • a stop signal for the textile machine is provided by the individual control unit 23 when a difference between monitored and given position of the motor 22 at any position is greater than a threshold value of the difference, e. g. than 1 mm.

Claims (10)

  1. Dispositif de fourniture de fil pour délivrer du fil à une machine textile
    avec au moins deux dispositifs d'alimentation positifs (1) et une unité de commande commune (2),
    dans lequel chaque dispositif d'alimentation positif (1) comprend une roue de fourniture de fil (21), un moteur à courant continu sans balai (22) pour entraîner la roue (21) et une unité de commande électronique individuelle (23) avec au moins un microcontrôleur,
    dans lequel le moteur (22) comprend un dispositif de détection (24) avec des capteurs à effet Hall pour surveiller la position du moteur (22) afin de commander les bobines du moteur (22),
    dans lequel l'unité de commande commune (2) est conçue pour fournir aux unités de commande individuelles (23) des informations sur le mouvement, par exemple une vitesse, de la machine textile, et dans lequel l'unité de commande individuelle (23) est conçue pour commander la position de son moteur (22) en correspondance avec le mouvement de la machine textile,
    dans lequel l'unité de commande individuelle (23) est conçue pour comparer la position surveillée du moteur (22) avec une position donnée du moteur (22) correspondant au mouvement de la machine textile et pour ajuster les courants pour les bobines du moteur (22) selon une différence entre les deux,
    caractérisé en ce que
    pour chaque dispositif d'alimentation, le dispositif de détection (24) comprend trois capteurs à effet Hall analogiques, qui sont disposés avec un décalage de 120° les uns par rapport aux autres en vue d'un axe d'un arbre de moteur (A), dans lequel les capteurs analogiques sont conçus pour générer des signaux sous forme d'ondes sinusoïdales (W1, W2, W3), et
    dans lequel l'unité de commande électronique individuelle (23) est conçue pour déterminer la position surveillée du moteur (22) en analysant les trois signaux d'ondes sinusoïdales (W1, W2, W3) à l'aide de leurs fonctions trigonométriques inverses et, si l'une de leurs fonctions trigonométriques inverses présente une discontinuité, en sélectionnant les deux des trois signaux sans discontinuité pour cette détermination.
  2. Dispositif de fourniture de fil selon la revendication 1, caractérisé en ce que l'unité de commande électronique individuelle (23) est conçue pour déterminer une position de la machine textile à partir des informations de mouvement et pour déterminer la position donnée du moteur (22) liée à la position déterminée de la machine textile.
  3. Dispositif de fourniture de fil selon la revendication 1 ou 2, caractérisé en ce que l'unité de commande électronique individuelle (23) est conçue pour commander les bobines du moteur (22) en utilisant un procédé de commande orientée sur le champ (FOC).
  4. Dispositif de fourniture de fil selon l'une des revendications 1 à 3, caractérisé en ce que l'unité de commande électronique individuelle (23) est conçue pour réguler la position du moteur (22) en ajustant les courants des bobines du moteur (22) en utilisant une modulation de largeur d'impulsion (PWM).
  5. Procédé de fourniture de fil à une machine textile par un dispositif de fourniture de fil qui comprend au moins deux dispositifs d'alimentation positifs (1) et une unité de commande commune (2),
    dans lequel chaque dispositif d'alimentation positif (1) comprend une roue de fourniture de fil (21), un moteur à courant continu sans balai (22) pour entraîner la roue (21) et une unité de commande électronique individuelle (23) avec au moins un microcontrôleur,
    dans lequel la position du moteur (22) est surveillée par un dispositif de détection (24) avec des capteurs à effet Hall afin de commander des bobines du moteur (22),
    dans lequel les unités de commande individuelles (23) sont munies d'informations sur un mouvement de la machine textile, par exemple une vitesse, par l'unité de commande commune (2),
    dans lequel, en correspondance avec le mouvement de la machine textile, la position du moteur (22) est commandée par l'unité de commande individuelle (23),
    dans lequel la position du moteur (22) qui est surveillée par le dispositif de détection (24) est comparée à une position donnée du moteur (22) correspondant au mouvement de la machine textile par l'unité de commande individuelle (23) et, en fonction d'une différence entre les deux, les courants des bobines du moteur (22) sont ajustés par l'unité de commande individuelle (23), caractérisé en ce que
    pour chaque dispositif d'alimentation positif (1), le dispositif de détection (24) comprend trois capteurs à effet Hall analogiques qui sont disposés avec un décalage de 120° l'un par rapport à l'autre par rapport à l'axe d'un arbre de moteur (A), dans lequel les signaux des trois capteurs à effet Hall analogiques sont fournis sous forme d'ondes sinusoïdales (W1, W2, W3), et
    dans lequel la position surveillée du moteur (22) est déterminée par l'unité de commande individuelle (23) en analysant les trois signaux d'ondes sinusoïdales (W1, W2, W3) à l'aide de leurs fonctions trigonométriques inverses et, si l'une de leurs fonctions trigonométriques inverses présente une discontinuité, en sélectionnant les deux des trois signaux sans discontinuité pour cette détermination.
  6. Procédé de fourniture de fil selon la revendication 5, caractérisé en ce qu'une position de la machine textile à partir des informations de mouvement et la position donnée du moteur (22) liée à la position déterminée de la machine textile sont déterminées par l'unité de commande électronique individuelle (23).
  7. Procédé de fourniture de fil selon la revendication 5 ou 6, caractérisé en ce que les bobines du moteur (22) sont commandées par l'unité de commande électronique individuelle (23) en utilisant un procédé de commande orientée sur le champ (FOC).
  8. Procédé de fourniture de fil selon l'une des revendications 5 à 7, caractérisé en ce que la position du moteur (22) est régulée par l'unité électronique de commande individuelle (23) en ajustant les courants des bobines du moteur (22) en utilisant une modulation de largeur d'impulsion (PWM).
  9. Procédé de fourniture de fil selon l'une des revendications 5 à 8, caractérisé en ce que, pour l'étalonnage, les formes des trois ondes sinusoïdales sont enregistrées à une vitesse de rotation donnée pendant une rotation complète du moteur (22) en tant que données d'étalonnage (CD) par l'unité de commande électronique individuelle (23) et, pour la synchronisation, la position du moteur (22) est déterminée pendant une rotation partielle du moteur (22) à l'aide des données d'étalonnage (CD).
  10. Procédé de fourniture de fil selon l'une des revendications 5 à 9, caractérisé en ce que la rotation du moteur (22) du dispositif d'alimentation (1) est automatiquement diminuée d'un degré donné par son unité de commande électronique individuelle (23) lorsqu'une chute de tension du fil est reconnue.
EP19180938.3A 2019-06-18 2019-06-18 Dispositif de fourniture de fil et procédé de fourniture de fil dans une machine textile Active EP3754079B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19180938.3A EP3754079B1 (fr) 2019-06-18 2019-06-18 Dispositif de fourniture de fil et procédé de fourniture de fil dans une machine textile
TW109109345A TWI751514B (zh) 2019-06-18 2020-03-20 紗線傳送裝置及用於傳送紗線至紡織機的方法
CN202010559149.9A CN112095218B (zh) 2019-06-18 2020-06-18 纱线输送装置和用于将纱线输送到纺织机的方法

Applications Claiming Priority (1)

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EP19180938.3A EP3754079B1 (fr) 2019-06-18 2019-06-18 Dispositif de fourniture de fil et procédé de fourniture de fil dans une machine textile

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EP3754079B1 true EP3754079B1 (fr) 2022-09-14

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TW202100838A (zh) 2021-01-01
TWI751514B (zh) 2022-01-01
CN112095218A (zh) 2020-12-18
EP3754079A1 (fr) 2020-12-23
CN112095218B (zh) 2022-07-22

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