EP2330237A1 - System and method for controlling a Jacquard mechanism, Jacquard mechanism and loom provided with such a system - Google Patents

System and method for controlling a Jacquard mechanism, Jacquard mechanism and loom provided with such a system Download PDF

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Publication number
EP2330237A1
EP2330237A1 EP10192664A EP10192664A EP2330237A1 EP 2330237 A1 EP2330237 A1 EP 2330237A1 EP 10192664 A EP10192664 A EP 10192664A EP 10192664 A EP10192664 A EP 10192664A EP 2330237 A1 EP2330237 A1 EP 2330237A1
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EP
European Patent Office
Prior art keywords
controller
main controller
controllers
jacquard
link
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EP10192664A
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German (de)
French (fr)
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EP2330237B1 (en
Inventor
Sylvain Puget
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Staubli Faverges SCA
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Staubli Faverges SCA
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/20—Electrically-operated jacquards
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/32—Jacquard driving mechanisms

Definitions

  • the invention relates to a control system of a Jacquard machine for forming a shed on a loom.
  • the invention also relates to a Jacquard mechanism comprising such a system, and to a loom equipped with such a mechanism.
  • the invention relates to a method of controlling a Jacquard mechanism.
  • a Jacquard machine can have up to 18,000 hooks that must be selectable in a drawing armor. Jacquard looms can currently weave at insertion speeds in excess of 1000 picks per minute. The selection must then be able to take place every 60 ms, whereas a drawing armor can contain several thousands of picks.
  • a control system for the selection of hooks in a Jacquard machine must therefore handle a large amount of information in a very short time. Any selection error results in a defect on the fabric, such an error may be due to a failure of data transmission to the selection devices or the failure of an element of the control system.
  • controller JC a first controller
  • controller of the loom on which the Jacquard and / or mechanical mechanism is mounted.
  • microcontroller which transfers the power supply status to the various electromagnets of the selection devices via electronic cards.
  • CN-A-101054752 proposes a control system of a Jacquard mechanism in which the selection devices are divided into at least two groups fed separately.
  • a master controller can collaborate with sub-controllers that receive and store all the armor information of a drawing. Storing the information of the armor of a drawing must take place prior to weaving and must be done with each change of armor. Important memory capacities must be used, which has a negative impact on the cost price of such a system.
  • Each sub-controller is connected in parallel with the main controller, resulting in a large number of connections, which leads to the risk of errors during the assembly of the control system and, subsequently, in the transmission of the control signals of the control devices. selection.
  • the invention intends to remedy more particularly by proposing a new control system for a Jacquard mechanism whose architecture facilitates assembly and reduces the risk of errors in the transmission of the control signals of the electromagnets. .
  • the invention relates to a system for controlling at least one crowd-forming Jacquard machine comprising electromagnetic selection devices, this system itself comprising a main controller comprising at least one main computer and at least one main memory and at least two secondary controllers each comprising at least one secondary computer and at least one secondary memory, each secondary controller being able to control a group of selection devices.
  • This control system is characterized in that the main controller and the secondary controllers are connected to each other by a loop serial link.
  • the number of connection wires between the main controller and the secondary controllers is reduced.
  • the configuration of the control system that is to say its adaptation to the format of the machine, particularly its number of hooks, can take place by adapting the number of secondary controllers looped.
  • the main controller board should not be equipped with large numbers of connectors, since only two connectors can be used, regardless of the number of secondary controllers.
  • the system architecture also makes it possible to control, from a single main controller, secondary controllers incorporated in two or more Jacquard machines.
  • the invention also relates to a so-called electronic Jacquard mechanism for forming the shed on a loom which is equipped with a control system as mentioned above.
  • the invention also relates to a loom comprising at least one such Jacquard mechanism.
  • such a loom may comprise at least two Jacquard machines each incorporating at least two secondary controllers, while the different secondary controllers of the different Jacquard machines are connected together and to a single main controller by a loop serial link, as mentioned above.
  • the invention relates to a control method of a Jacquard mechanism that can be implemented by means of the system mentioned above.
  • This method is characterized in that at least control signals and / or data signals flow in a loop serial link between the main controller and the secondary controllers.
  • the loom 2 shown very schematically at the figure 1 is equipped with an electronic Jacquard mechanism 4 which controls the vertical movement of rails 6 equipped with eyelets 8 for passing unrepresented warp threads.
  • a device 10 is provided for inserting weft threads into the shed formed by the warp threads passing through the eyelets 8.
  • Electromagnetic selection devices 20 make it possible to select selectively in the high position one or both hooks mounted at the ends of a funicular element.
  • Each selection device 20 comprises an electromagnet 22 supplied with electric current depending on the weave of the fabric being woven on the loom 2. More specifically, an electromagnet 22 is energized when it has to act on a not shown elastically biased lever. in position by a spring, this lever being then moved to retain in the raised position a movable hook.
  • the selection devices 20 may be of variable type, provided that they comprise at least one electromagnetic device to be activated according to the armor.
  • the selection devices 20 are grouped in modules containing eight devices 20 which are powered by a common electronic card 30.
  • Each card 30 supports a control circuit 32 comprising eight unrepresented transistors each having an open collector connected to a terminal of the coil. an electromagnet.
  • the circuit 32 is also connected to a shift register 34 whose outputs control the eight transistors. The switching of these transistors determines the current supply state of each electromagnet.
  • the shift register 34 is connected to a serial input 342 and a serial output 344 which are juxtaposed with the other inputs of the card 30, among which there is a clock input 36, a power supply input 37 electromagnets 22, a voltage input 38 at 16V and a ground connection 39.
  • the card 30 also comprises unrepresented circuits for detecting failure of the operation of the electromagnets 22. These circuits are capable of reversing the contents of the register bit. shifter 34 corresponding to an electromagnet coil 22 in short circuit or cut. They also zero the entire contents of the shift register if overheating is detected on the board 30.
  • the card 30 comprises an ASIC (application specific integrated circuit) not shown which integrates the shift register 34 and the eight transistors.
  • ASIC application specific integrated circuit
  • a secondary controller 40A which comprises an electronic card 42A supporting a computer 44A and a memory 46A RAM type.
  • the computer 44A is of the microprocessor type.
  • the card 42A can support several computers or several memories interconnected with one another.
  • a ribbon of cables 50 connects a group of cards 30 and the card 42A.
  • Several groups of cards 30 are connected in parallel to the card 42A, by means of corresponding cable plies 50, as shown schematically in FIG. figure 1 .
  • the number of cards 30 fed by the same cable ply 50 can be between one and sixteen, while from one to twelve layers of cables can be connected in parallel on the card 42A.
  • the Jacquard mechanism 4 comprises a second secondary controller 40B whose electronic card 42B carries a computer 44B constituted by a microprocessor and an associated RAM 46B.
  • the controllers 40A and 40B are identical.
  • Cable plies 50 connect the board 42B to unrepresented electronic boards 30 which supply electromagnetic selection devices 20 identical to those supplied and controlled by the secondary controller 40B which is partially shown in FIG. figure 1 .
  • the number of secondary controllers, of the type of controllers 40A and 40B incorporated in the mechanism 4 depends on the number of pairs of movable hooks to be controlled. It is usually between two and twelve.
  • Each secondary controller 40A or 40B is supplied with electric current, at a voltage of 16V, from a dedicated corresponding voltage source, 60A or 60B.
  • a main controller 70 is connected to a module 26 of the loom 2 which provides it with an electronic signal S 26 containing information relating to the mode of operation of the loom 2 which can be a normal weaving mode, an emergency stop, a search for picking in slow running, etc.
  • the main controller 70 comprises an electronic card 72 which supports a microprocessor-type computer 74, as well as a memory 76 of the RAM type. Unrepresented means of communication between the computer 74 and the memory 76 are also provided. As a variant, several computers and / or several memories may be supported by the card 72.
  • the controller 70 is also connected to an encoder 48 mounted on a drive shaft of the claw frames of the mechanics 4, which makes it possible to determine the angular position of this shaft in its cycle of rotation.
  • An electronic signal S 48 is supplied to the controller 70 by the encoder 48.
  • the main controller 70 emulates a screen 80 disposed in the vicinity of the loom 2 and to which it is connected by a wired link 82.
  • a first electrical cable 92 connects the card 72 to the card 42A of the secondary controller 40A.
  • a second electrical cable 94 interconnects the cards 42A and 42B.
  • a third electrical cable 96 connects the card 42B to the card 72.
  • a series 90 electrical connection is thus formed between the cards 72, 42A and 42B, this link being in a closed loop.
  • the elements 40A, 40B, 60A and 60B are integrated in the mechanism 4, whereas the elements 70 and 80 are located outside this mechanics, as shown on the figure 1 .
  • the link 90 is of the RS 422 type and suitable connectors are provided respectively at the ends of the cables 92, 94 and 96, on the one hand, and on the corresponding terminals of the cards 72, 42A and 42B.
  • the memory 76 is intended to contain all the information relating to an armor to be made for weaving a fabric. This information concerns all the hooks of the mechanics 4 and the set of picks.
  • the memory 46A is intended, in turn, to contain the relevant armor information for the selection devices 20 powered and controlled by the secondary controller 40A.
  • the memory 46B is provided to hold the relevant weave information for the devices 20 powered and controlled by the secondary controller 40B.
  • the memories 46A and 46B contain only weave information concerning the groups of devices 20 controlled by the secondary controller 40A or 40B to which they belong.
  • the link 90 makes it possible to feed or "load” the memories 46A and 46B with the pertinent data which concerns them.
  • a data signal S 1 is addressed by the controller 70, through the link 90 successively to the secondary controllers 40A and 40B. More specifically, the data signal S 1 is addressed by the controller 70 to the controller 40A through the cable 92. This signal is processed by the computer 44A to extract the data to be loaded into the memory 46A. This signal is then addressed through the cable 94, from the secondary controller 40A to the secondary controller 40B where it is processed by the computer 44B to load the memory 46B. This signal is then redirected towards controller 70. In other words, signal S 1 travels loop 90 from controller 70 to secondary controller 40A, then to secondary controller 40B, and back to controller 70.
  • the signal S 1 enables the computers 44A and 44B to load the memories 46A and 46B with the weave data relating to the current pick and the following two picks, it being understood that the respective contents of the memories 46A and 46B are not erased. as far as the two previous ones are concerned.
  • memories 46A and 46B contain armor information relating to the current pick, the two previous picks and the next two picks.
  • these memories contain only the armor information relating to the current pick, or the current pick and the previous pick.
  • the link 90 also serves to convey control signals for the secondary controllers 40A and 40B. These signals are sent by the main controller 70 to the secondary controllers through the link 90, in the opposite direction of the flow direction of the signal S 1 .
  • the electronic signal S 2 containing the control signals is addressed by the controller 70 to the controller 40B, through the cable 96. It is then operated by the microcomputer 44B. This signal then passes through the cable 94, from the secondary controller 40B to the secondary controller 40A where it is processed by the computer 44A. It finally returns from the secondary controller 40A to the main controller 70 through the cable 92.
  • the protocols for transmitting these signals can be specific and adapted to their nature.
  • an alarm signal S 3 can also pass through the link 90 of each of the secondary controllers 40A or 40B to the main controller 70.
  • the signals exchanged through the link 90 are thus of three types: the data signals S 1 relating to the supply states of the electromagnets 22, the control signals S 2 and the alarm signals S 3 . These signals are transmitted by four differential pairs of conductors forming the cables 92 and equivalent, namely two for the data signals S 1 , one for the control signals S 2 and one for the alarm signals S 3 .
  • the signal transmissions performed through the link 90 satisfy the RS422 standard which allows high throughput and excellent immunity to electromagnetic noise.
  • the data can be encoded in known ways according to the Universal Asynchronous Receiver Transmitter (UART) communication protocol.
  • UART Universal Asynchronous Receiver Transmitter
  • the loop structure of the link 90 allows the advantageous use of the Serial Peripheral Interface (SPI) communication protocol.
  • SPI Serial Peripheral Interface
  • the main controller 70 determines, for each selection device 20 of the mechanical 4, the power state of its electromagnet 22.
  • each secondary controller 40A or 40B always has in its memory 46A or 46B power states of the various devices 20 that it controls for the two picks preceding the current pick, for the current pick and for the next two picks.
  • each secondary controller 40A or 40B sequentially sends the power states to the electromagnets 22 it controls, through the cable plies 50.
  • each secondary controller 40A or 40B sequentially fills the shift registers 34 of the electronic cards 30. connected to it.
  • the controller 70 Since the controller 70 is in direct connection with the angular position sensor 48, it continuously knows the position of the loom, which enables it to transmit in due time the feed order to the different secondary controllers 40A and 40B, under the form of the signal S 2 .
  • the electromagnets 22 are thus activated at the right moment and without fault by the secondary controller 40A or 40B to which they are connected.
  • each secondary controller 40A or 40B recovers the state of the registers 34 of these different cards and can process the detected errors.
  • This processing mainly consists of the secondary controller 40A or 40B to compare the contents of the shift registers that it has just received from the cards 30 compared to the one that it had sent during a previous pick.
  • the secondary controller 40A or 40B is able to diagnose overheating if it finds that the contents of the shift register of the corresponding module has been set to zero.
  • the rank of the shift register concerned makes it possible to precisely locate the faulty module.
  • the secondary controller 40A or 40B is able to diagnose a short-circuited or broken coil.
  • This processing is implemented by the secondary controllers 40A and 40B for each set of selection devices 20 associated with a secondary controller 40A or 40B through a cable layer 50. It is therefore faster than in the case where a single computer should process information relating to all the electromagnets of a Jacquard machine. It can, consequently, be more sophisticated. Thus, a type of defect can be reported without causing the total stop of the trade 2.
  • An error detected by one of the secondary controllers 40A and 40B is signaled by the transmission of an alarm signal S 3 addressed through the link 90 to the main controller 70 which can exploit this signal.
  • the error can be signaled by the controller 70 to the job 2.
  • the main controller 70 can then order without delay the stopping of the loom. Subsequently, it can interrogate by S 2 control signals all the secondary controllers 40A and 40B to obtain information on the nature and the exact location of the failure.
  • the dialogue between the main controller 70 and the secondary controllers 40A and 40B takes place through the link 90, in parallel with the transmission of the power states of the different electromagnets 22 to the different electronic boards 30. It is therefore possible to carry out a consistency check, as explained above.
  • the link 90 is a serial loop link between the different controllers 70, 40A and 40B, the number of connection cables is reduced compared to the known devices, each cable comprising four differential pairs of conductors, as explained above.
  • the adaptation of the control system 100 to the format of the trade 2 and the mechanical 4 takes place by adapting the number of secondary controllers 40A, 40B, ... which are integrated in the control loop.
  • each Jacquard mechanism includes selection devices 20 comprising electromagnets, controlled by common electronic cards 30 and which are controlled by secondary controllers 40A, 40B, 40'A, 40'B each equipped with a microprocessor-type computer 44A, 44B, 44'A, 44'B and a RAM 46A , 46B, 46'A, 46'B.
  • Each secondary controller 40A, 40B, 40'A, 40'B is respectively powered by a dedicated voltage source 60A, 60B, 60'A, 60'B.
  • a single main controller 70 is used and comprises a computer 74 and a memory 76 of RAM type mounted on an electronic card 72.
  • the controller 70 is connected to the different secondary controllers 40A, 40B, 40'A and 40'B by a serial link in a loop 90 which includes a first cable 92 which connects the controller 70 to the secondary controller 40A, a second cable 94 which connects the controller 40A to the controller 40B, a third cable 96 which connects the controller 40B to the controller 40'B, a fourth cable 98 which connects the controller 40'B to the controller 40'A and a fifth cable 99 which connects the controller 40'A to the controller 70.
  • a serial link in a loop 90 which includes a first cable 92 which connects the controller 70 to the secondary controller 40A, a second cable 94 which connects the controller 40A to the controller 40B, a third cable 96 which connects the controller 40B to the controller 40'B, a fourth cable 98 which connects the controller 40'B to the controller 40'A and a fifth cable 99 which connects the controller 40'A to the controller 70.
  • the components 44A, 46A, 44B, 46B, 44'A, 46'A, 44'B and 46'B are respectively mounted on electronic boards 42A, 42B, 42'A, 42'B.
  • the link 90 interconnects the cards 72, 42A, 42B, 42'B and 42'A in this order.
  • a control screen 80 is connected to the controller 70 by a wired link 82.
  • the secondary controllers 40'A and 40'B of the second Jacquard 4 'do not have to function as slaves of those of the first mechanical 4.
  • the configuration of the link 90 is adapted, while maintaining a looped serial architecture.
  • secondary controllers incorporated in a third Jacquard mechanism can be connected in series between the controllers 40B and 40'B.
  • control signals S 2 and the data signals S 1 are transmitted to the different secondary controllers 40A, 40B, etc. in opposite directions of the connection loop 90, it is possible to easily locate a transmission problem.
  • the transfer of design armor information, according to the signal S 1 , between the main controller 70 and the secondary controllers 40A, 40B, 40'A, 40'B ... is performed in masked time of each pick. It is then possible to change armor without stopping the loom 2.
  • the secondary controllers can proceed to compare the contents of the registers of the different electronic cards 30 with respect to the situation of the previous selection, at the end of the transmission of the power states of the current pick. This makes it possible to detect possible faults.
  • the search operations for picks consecutive to a business defect do not require no transfer of immediate data between the main controller 70 and the secondary controllers 40A, 40B, 40'A, 40'B.
  • each Jacquard mechanism comprises two secondary controllers 40A, 40B or 40'A, 40'B.
  • the number of these secondary controllers present within each Jacquard mechanism may be greater than two, for example between three and twelve.
  • the serial link 90 between the secondary controllers within the Jacquard mechanism is performed by means of electrical cables similar to the cables 94 and 99.
  • the invention has been shown in the case where the secondary controllers are integrated in a Jacquard mechanism, while the main controller is disposed outside of this machine.
  • the main controller can be integrated with the or one of the Jacquard machines.
  • the invention also applies to Jacquard mechanisms for carpet weaving, that is to say whose selection devices allow the choice of a position of the arcade among more than two positions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

The system has a main controller (70) with a main memory (76), and two secondary controllers (40A, 40B) control group of selection devices (20). The main controller and the secondary controllers are connected to each other by a recommended standardtype serial connection (90) in a loop, where the connection sends a control signal and data signal. Cards (30) are connected in series to one of the secondary controllers. An independent claim is also included for a method for controlling a jacquard mechanism for formation of shed on a shuttle loom.

Description

L'invention a trait à un système de contrôle d'une mécanique Jacquard pour la formation de la foule sur un métier à tisser. L'invention a également trait à une mécanique Jacquard comprenant un tel système, ainsi qu'à un métier à tisser équipé d'une telle mécanique. Enfin, l'invention a trait à une méthode de contrôle d'une mécanique Jacquard.The invention relates to a control system of a Jacquard machine for forming a shed on a loom. The invention also relates to a Jacquard mechanism comprising such a system, and to a loom equipped with such a mechanism. Finally, the invention relates to a method of controlling a Jacquard mechanism.

Dans le domaine des métiers à tisser de type Jacquard, il est connu, par exemple de EP-A-0 214 075 d'utiliser, des dispositifs de sélection pour retenir, au voisinage du point mort haut de leurs trajectoires, des crochets mobiles déplacés verticalement par des couteaux ou griffes animés d'un mouvement de va-et-vient. Ces dispositifs de sélection comprennent des électroaimants qui doivent être sélectivement alimentés pour agir sur des leviers pivotants, en fonction de l'armure à réaliser.In the field of jacquard looms, it is known, for example EP-A-0 214 075 to use selection devices to retain, in the vicinity of the top dead center of their trajectories, movable hooks moved vertically by knives or claws animated by a movement back and forth. These selection devices comprise electromagnets which must be selectively powered to act on pivoting levers, depending on the armor to be produced.

Il importe d'assurer la commande de la sélection des crochets mobiles en synchronisme avec l'avance du métier sur lequel est montée une mécanique Jacquard. Une mécanique Jacquard peut compter jusqu'à 18 000 crochets qui doivent pouvoir être sélectionnés suivant une armure de dessin. Les métiers à tisser Jacquard peuvent actuellement tisser à des vitesses d'insertion dépassant les 1000 duites par minute. La sélection doit alors pouvoir s'opérer toutes les 60 ms, alors qu'une armure de dessin peut contenir plusieurs milliers de duites. Un système de commande de la sélection des crochets dans une mécanique Jacquard doit donc gérer une quantité importante d'informations dans un temps très court. Toute erreur de sélection se traduit par un défaut sur le tissu, une telle erreur pouvant provenir d'un défaut de transmission des données aux dispositifs de sélection ou de la défaillance d'un élément du système de commande.It is important to ensure the control of the selection of the movable hooks in synchronism with the advance of the trade on which is mounted a Jacquard mechanism. A Jacquard machine can have up to 18,000 hooks that must be selectable in a drawing armor. Jacquard looms can currently weave at insertion speeds in excess of 1000 picks per minute. The selection must then be able to take place every 60 ms, whereas a drawing armor can contain several thousands of picks. A control system for the selection of hooks in a Jacquard machine must therefore handle a large amount of information in a very short time. Any selection error results in a defect on the fabric, such an error may be due to a failure of data transmission to the selection devices or the failure of an element of the control system.

La Demanderesse commercialise depuis plusieurs années un dispositif de contrôle d'une mécanique Jacquard dans laquelle un premier contrôleur dit « contrôleur JC » communique, d'une part, avec un contrôleur du métier à tisser sur lequel est montée la mécanique Jacquard et, d'autre part, avec un microcontrôleur qui assure le transfert de l'état d'alimentation aux différents électroaimants des dispositifs de sélection, par l'intermédiaire de cartes électroniques. Ce système fonctionne de façon satisfaisante.For several years, the Applicant has been marketing a control device for a Jacquard mechanism in which a first controller called "controller JC" communicates, on the one hand, with a controller of the loom on which the Jacquard and / or mechanical mechanism is mounted. on the other hand, with a microcontroller which transfers the power supply status to the various electromagnets of the selection devices via electronic cards. This system works satisfactorily.

Il est par ailleurs connu de CN-A-101054749 d'utiliser, dans un système de contrôle d'une mécanique Jacquard, des cartes de commande qui supportent à la fois une unité de mémoire et des circuits de commande pour des actionneurs électromagnétiques. Avant le début du tissage, chaque unité de mémoire doit recevoir l'intégralité des informations d'armure de dessin et ces informations sont stockées pour être utilisées en cours de tissage. Un tel système exige des capacités de mémoire importantes au niveau de chacune des cartes de commande qui sont nombreuses, d'où un coût élevé. En outre, la phase préalable au tissage, au cours de laquelle les informations d'armure sont mises en mémoire, est longue, en particulier dans le cas d'une armure de plusieurs milliers de duites pour une machine Jacquard comprenant plus de 10 000 crochets. De plus, ce système ne permet pas de modifier l'armure de dessin en cours de tissage.It is also known from CN-A-101054749 to use, in a control system of a Jacquard machine, control boards that support both a memory unit and control circuits for electromagnetic actuators. Before the start of weaving, each unit of memory must receive all of the drawing armor information and this information is stored for use during weaving. Such a system requires significant memory capacity at each of the control cards that are numerous, resulting in a high cost. In addition, the pre-weaving phase, during which the weave information is stored, is long, particularly in the case of an armor of several thousand picks for a Jacquard machine comprising more than 10,000 hooks . In addition, this system does not change the weave drawing during weaving.

CN-A-101054752 propose un système de contrôle d'une mécanique Jacquard dans lequel les dispositifs de sélection sont divisés en au moins deux groupes alimentés séparément. Un contrôleur principal peut collaborer avec des sous-contrôleurs qui reçoivent et mettent en mémoire l'ensemble des informations d'armure d'un dessin. La mise en mémoire des informations de l'armure d'un dessin doit avoir lieu préalablement au tissage et doit être effectuée à chaque changement d'armure. Des capacités de mémoire importantes doivent être utilisées, ce qui influe négativement sur le prix de revient d'un tel système. Chaque sous-contrôleur est raccordé en parallèle au contrôleur principal, d'où un nombre important de connexions, ce qui induit des risques d'erreurs lors du montage du système de contrôle et, ultérieurement, dans la transmission des signaux de commande des dispositifs de sélection. CN-A-101054752 proposes a control system of a Jacquard mechanism in which the selection devices are divided into at least two groups fed separately. A master controller can collaborate with sub-controllers that receive and store all the armor information of a drawing. Storing the information of the armor of a drawing must take place prior to weaving and must be done with each change of armor. Important memory capacities must be used, which has a negative impact on the cost price of such a system. Each sub-controller is connected in parallel with the main controller, resulting in a large number of connections, which leads to the risk of errors during the assembly of the control system and, subsequently, in the transmission of the control signals of the control devices. selection.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un nouveau système de contrôle d'une mécanique Jacquard dont l'architecture facilite le montage et diminue les risques d'erreurs dans la transmission des signaux de commande des électroaimants.It is these drawbacks that the invention intends to remedy more particularly by proposing a new control system for a Jacquard mechanism whose architecture facilitates assembly and reduces the risk of errors in the transmission of the control signals of the electromagnets. .

A cet effet, l'invention concerne un système de contrôle d'au moins une mécanique Jacquard de formation de la foule comprenant des dispositifs de sélection électromagnétiques, ce système comprenant lui-même un contrôleur principal comportant au moins un calculateur principal et au moins une mémoire principale ainsi qu'au moins deux contrôleurs secondaires comportant chacun au moins un calculateur secondaire et au moins une mémoire secondaire, chaque contrôleur secondaire étant apte à commander un groupe de dispositifs de sélection. Ce système de contrôle est caractérisé en ce que le contrôleur principal et les contrôleurs secondaires sont connectés entre eux par une liaison série en boucle.For this purpose, the invention relates to a system for controlling at least one crowd-forming Jacquard machine comprising electromagnetic selection devices, this system itself comprising a main controller comprising at least one main computer and at least one main memory and at least two secondary controllers each comprising at least one secondary computer and at least one secondary memory, each secondary controller being able to control a group of selection devices. This control system is characterized in that the main controller and the secondary controllers are connected to each other by a loop serial link.

Grâce à l'invention, le nombre de fils de connexion entre le contrôleur principal et les contrôleurs secondaires est réduit. La configuration du système de contrôle, c'est-à-dire son adaptation au format de la machine, tout particulièrement à son nombre de crochets, peut avoir lieu en adaptant le nombre de contrôleurs secondaires mis en boucle. La carte électronique du contrôleur principal ne doit pas être équipée de connecteurs en grand nombre, puisque seul deux connecteurs peuvent être utilisés, quel que soit le nombre de contrôleurs secondaires. L'architecture du système permet également de commander, à partir d'un unique contrôleur principal, des contrôleurs secondaires incorporés à deux mécaniques Jacquard, ou plus.Thanks to the invention, the number of connection wires between the main controller and the secondary controllers is reduced. The configuration of the control system, that is to say its adaptation to the format of the machine, particularly its number of hooks, can take place by adapting the number of secondary controllers looped. The main controller board should not be equipped with large numbers of connectors, since only two connectors can be used, regardless of the number of secondary controllers. The system architecture also makes it possible to control, from a single main controller, secondary controllers incorporated in two or more Jacquard machines.

Selon des aspects avantageux mais non obligatoires de l'invention, un tel système peut incorporer une ou plusieurs des caractéristiques suivantes :

  • La liaison entre le contrôleur principal et les contrôleurs secondaires est de type RS 422.
  • La liaison entre le contrôleur principal et les contrôleurs secondaires est apte à convoyer des signaux de commande, ainsi que des signaux de données.
According to advantageous but non-mandatory aspects of the invention, such a system can incorporate one or more of the following features:
  • The link between the main controller and the secondary controllers is RS 422.
  • The link between the main controller and the secondary controllers is able to convey control signals as well as data signals.

L'invention concerne également une mécanique Jacquard, dite électronique, pour la formation de la foule sur un métier à tisser qui est équipée d'un système de contrôle tel que mentionné ci-dessus.The invention also relates to a so-called electronic Jacquard mechanism for forming the shed on a loom which is equipped with a control system as mentioned above.

L'invention concerne également un métier à tisser comprenant au moins une telle mécanique Jacquard.The invention also relates to a loom comprising at least one such Jacquard mechanism.

En particulier, un tel métier à tisser peut comprendre au moins deux mécaniques Jacquard incorporant chacune au moins deux contrôleurs secondaires, alors que les différents contrôleurs secondaires des différentes mécaniques Jacquard sont connectés entre eux et à un unique contrôleur principal par une liaison série en boucle, comme mentionné ci-dessus.In particular, such a loom may comprise at least two Jacquard machines each incorporating at least two secondary controllers, while the different secondary controllers of the different Jacquard machines are connected together and to a single main controller by a loop serial link, as mentioned above.

Enfin, l'invention concerne une méthode de contrôle d'une mécanique Jacquard qui peut être mise en oeuvre grâce au système mentionné ci-dessus. Cette méthode est caractérisée en ce 'qu'au moins des signaux de commande et/ou des signaux de données circulent dans une liaison série en boucle, entre le contrôleur principal et les contrôleurs secondaires.Finally, the invention relates to a control method of a Jacquard mechanism that can be implemented by means of the system mentioned above. This method is characterized in that at least control signals and / or data signals flow in a loop serial link between the main controller and the secondary controllers.

Selon des aspects avantageux mais non obligatoires de l'invention, une telle méthode peut incorporer l'une ou l'autre des caractéristiques suivantes prises dans toute combinaison techniquement admissible :

  • Les signaux qui circulent dans la liaison série en boucle sont conformes à un protocole de communication de type SPI (Serial Peripheral Interface).
  • Les signaux de commande parcourent la liaison dans un premier sens, alors que les signaux de données parcourent la liaison dans un deuxième sens, inverse par rapport au premier sens.
  • La mémoire secondaire d'un contrôleur secondaire contient uniquement des informations d'armure concernant le groupe de dispositifs de sélection électromagnétiques commandés par ce contrôleur secondaire, pour au moins la duite en cours.
  • La mémoire secondaire d'un contrôleur secondaire contient au moins des informations d'armure relatives à la duite en cours et la duite précédente. De préférence, cette mémoire secondaire contient des informations d'armure relatives à la duite en cours, aux deux duites précédentes et aux deux duites suivantes.
  • Les défaillances des dispositifs de sélection électromécaniques sont traitées par les contrôleurs secondaires qui, en cas de défaillance, émettent sur la liaison série en boucle un signal d'alarme à destination du contrôleur principal.
  • Des signaux d'alarme circulent également dans la liaison série en boucle, des contrôleurs secondaires vers le contrôleur principal.
According to advantageous but non-mandatory aspects of the invention, such a method may incorporate any one or more of the following features taken in any technically permissible combination:
  • The signals that circulate in the loop serial link are in accordance with a Serial Peripheral Interface (SPI) type communication protocol.
  • The control signals traverse the link in a first direction, while the data signals travel the link in a second direction, opposite to the first direction.
  • The secondary memory of a secondary controller contains only armor information concerning the group of electromagnetic selection devices controlled by this secondary controller, for at least the current pick.
  • The secondary memory of a secondary controller contains at least armor information relating to the current pick and the previous pick. Preferably, this secondary memory contains armor information relating to the current pick, the two previous picks and the next two picks.
  • The failures of the electromechanical selection devices are handled by the secondary controllers which, in case of failure, transmit on the loop serial link an alarm signal to the main controller.
  • Alarm signals also flow in the loop serial link, from the secondary controllers to the main controller.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre de deux modes de réalisation d'un métier à tisser équipé d'une mécanique Jacquard et d'un système de contrôle de cette mécanique, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une représentation schématique de principe d'un métier à tisser équipé d'un système de contrôle conforme à l'invention ;
  • la figure 2 est une vue à plus grande échelle du détail Il à la figure 1 ;
  • la figure 3 est une représentation schématique analogue à la figure 1, mais à plus petite échelle, pour un métier à tisser conforme à une deuxième mode de réalisation de l'invention.
The invention will be better understood and other advantages thereof will emerge more clearly in the light of the following description of two embodiments of a loom equipped with a Jacquard mechanism and a control system. control of this mechanism, given solely by way of example and with reference to the appended drawings in which:
  • the figure 1 is a schematic representation of principle of a loom equipped with a control system according to the invention;
  • the figure 2 is a larger-scale view of the detail He at the figure 1 ;
  • the figure 3 is a schematic representation similar to the figure 1 , but on a smaller scale, for a loom according to a second embodiment of the invention.

Le métier à tisser 2 représenté très schématiquement à la figure 1 est équipé d'une mécanique Jacquard électronique 4 qui commande le déplacement vertical de lisses 6 équipées d'oeillets 8 de passage de fils de chaîne non représentés. Un dispositif 10 est prévu pour insérer des fils de trame dans la foule formée par les fils de chaîne traversant les oeillets 8.The loom 2 shown very schematically at the figure 1 is equipped with an electronic Jacquard mechanism 4 which controls the vertical movement of rails 6 equipped with eyelets 8 for passing unrepresented warp threads. A device 10 is provided for inserting weft threads into the shed formed by the warp threads passing through the eyelets 8.

La position verticale des lisses 6 est commandée par des arcades 12 supportées par des palonniers non représentés eux-mêmes supportés par des éléments funiculaires dont les extrémités sont équipées de crochets en appui sur des couteaux ou griffes non représentés animés d'un mouvement de va-et-vient vertical, comme expliqué dans EP-A-0 214 075 . Des dispositifs de sélection électromagnétiques 20 permettent de retenir sélectivement en position haute l'un ou les deux crochets montés aux extrémités d'un élément funiculaire. Chaque dispositif de sélection 20 comprend un électroaimant 22 alimenté en courant électrique en fonction de l'armure du tissu en cours de tissage sur le métier 2. Plus précisément, un électroaimant 22 est alimenté lorsqu'il doit agir sur un levier non représenté rappelé élastiquement en position par un ressort, ce levier étant alors déplacé pour retenir en position haute un crochet mobile.The vertical position of the rails 6 is controlled by arches 12 supported by unrepresented pedals themselves supported by funicular elements whose ends are equipped with hooks resting on knives or claws not shown animated by a movement of back and forth, as explained in EP-A-0 214 075 . Electromagnetic selection devices 20 make it possible to select selectively in the high position one or both hooks mounted at the ends of a funicular element. Each selection device 20 comprises an electromagnet 22 supplied with electric current depending on the weave of the fabric being woven on the loom 2. More specifically, an electromagnet 22 is energized when it has to act on a not shown elastically biased lever. in position by a spring, this lever being then moved to retain in the raised position a movable hook.

En pratique, les dispositifs de sélection 20 peuvent être de type variable, pour autant qu'ils comprennent au moins un organe électromagnétique à activer en fonction de l'armure.In practice, the selection devices 20 may be of variable type, provided that they comprise at least one electromagnetic device to be activated according to the armor.

Les dispositifs de sélection 20 sont regroupés dans des modules contenant huit dispositifs 20 qui sont alimentés par une carte électronique commune 30. Chaque carte 30 supporte un circuit de commande 32 comportant huit transistors non représentés ayant chacun un collecteur ouvert relié à une borne de la bobine d'un électroaimant. Le circuit 32 est également connecté à un registre à décalage 34 dont les sorties commandent les huit transistors. La commutation de ces transistors détermine l'état d'alimentation en courant de chaque électroaimant. Le registre à décalage 34 est relié à une entrée série 342 et à une sortie série 344 qui sont juxtaposées aux autres entrées de la carte 30, parmi lesquelles on compte une entrée d'horloge 36, une entrée 37 d'activation de l'alimentation des électroaimants 22, une entrée 38 de tension à 16V et une liaison à la masse 39. La carte 30 comporte également des circuits non représentés de détection de défaillance du fonctionnement des électroaimants 22. Ces circuits sont aptes à inverser le contenu du bit du registre à décalage 34 correspondant à une bobine d'électroaimant 22 en court circuit ou coupée. Ils mettent également à zéro tout le contenu du registre à décalage si une surchauffe est détectée sur la carte 30.The selection devices 20 are grouped in modules containing eight devices 20 which are powered by a common electronic card 30. Each card 30 supports a control circuit 32 comprising eight unrepresented transistors each having an open collector connected to a terminal of the coil. an electromagnet. The circuit 32 is also connected to a shift register 34 whose outputs control the eight transistors. The switching of these transistors determines the current supply state of each electromagnet. The shift register 34 is connected to a serial input 342 and a serial output 344 which are juxtaposed with the other inputs of the card 30, among which there is a clock input 36, a power supply input 37 electromagnets 22, a voltage input 38 at 16V and a ground connection 39. The card 30 also comprises unrepresented circuits for detecting failure of the operation of the electromagnets 22. These circuits are capable of reversing the contents of the register bit. shifter 34 corresponding to an electromagnet coil 22 in short circuit or cut. They also zero the entire contents of the shift register if overheating is detected on the board 30.

De façon avantageuse, la carte 30 comporte un ASIC (Application Specific Integrated circuit) non représenté qui intègre le registre à décalage 34 et les huit transistors.Advantageously, the card 30 comprises an ASIC (application specific integrated circuit) not shown which integrates the shift register 34 and the eight transistors.

Plusieurs cartes 30 sont connectées en série à un contrôleur secondaire 40A qui comprend une carte électronique 42A supportant un calculateur 44A et une mémoire 46A de type RAM. Le calculateur 44A est de type microprocesseur. En variante, la carte 42A peut supporter plusieurs calculateurs ou plusieurs mémoires interconnectés entre eux.Several cards 30 are connected in series to a secondary controller 40A which comprises an electronic card 42A supporting a computer 44A and a memory 46A RAM type. The computer 44A is of the microprocessor type. In a variant, the card 42A can support several computers or several memories interconnected with one another.

Une nappe de câbles 50 relie un groupe de cartes 30 et la carte 42A. Plusieurs groupes de cartes 30 sont raccordés en parallèle à la carte 42A, au moyen de nappes de câbles 50 correspondantes, comme représenté schématiquement à la figure 1. En pratique, le nombre de carte 30 alimentées par une même nappe de câble 50 peut être compris entre un et seize, alors que de une à douze nappes de câbles peuvent être raccordées en parallèle sur la carte 42A.A ribbon of cables 50 connects a group of cards 30 and the card 42A. Several groups of cards 30 are connected in parallel to the card 42A, by means of corresponding cable plies 50, as shown schematically in FIG. figure 1 . In practice, the number of cards 30 fed by the same cable ply 50 can be between one and sixteen, while from one to twelve layers of cables can be connected in parallel on the card 42A.

La mécanique Jacquard 4 comprend un deuxième contrôleur secondaire 40B dont la carte électronique 42B porte un calculateur 44B constitué par un microprocesseur et une mémoire RAM associée 46B. Les contrôleurs 40A et 40B sont identiques.The Jacquard mechanism 4 comprises a second secondary controller 40B whose electronic card 42B carries a computer 44B constituted by a microprocessor and an associated RAM 46B. The controllers 40A and 40B are identical.

Des nappes de câbles 50 relient la carte 42B à des cartes électroniques 30 non représentées qui alimentent des dispositifs de sélection électromagnétiques 20 identiques à ceux alimentés et commandés par le contrôleur secondaire 40B qui est partiellement représenté à la figure 1.Cable plies 50 connect the board 42B to unrepresented electronic boards 30 which supply electromagnetic selection devices 20 identical to those supplied and controlled by the secondary controller 40B which is partially shown in FIG. figure 1 .

En pratique, le nombre de contrôleurs secondaires, du type des contrôleurs 40A et 40B incorporés à la mécanique 4 dépend du nombre de paires de crochets mobiles à commander. Il est généralement compris entre deux et douze.In practice, the number of secondary controllers, of the type of controllers 40A and 40B incorporated in the mechanism 4 depends on the number of pairs of movable hooks to be controlled. It is usually between two and twelve.

Chaque contrôleur secondaire 40A ou 40B est alimenté en courant électrique, sous une tension de 16V, à partir d'une source de tension correspondante dédiée, 60A ou 60B.Each secondary controller 40A or 40B is supplied with electric current, at a voltage of 16V, from a dedicated corresponding voltage source, 60A or 60B.

Un contrôleur principal 70 est relié à un module 26 du métier 2 qui lui fournit un signal électronique S26 contenant des informations relatives au mode de fonctionnement du métier 2 qui peut être un mode de tissage normal, un arrêt d'urgence, une recherche de duites en marche lente, etc.A main controller 70 is connected to a module 26 of the loom 2 which provides it with an electronic signal S 26 containing information relating to the mode of operation of the loom 2 which can be a normal weaving mode, an emergency stop, a search for picking in slow running, etc.

Le contrôleur principal 70 comprend une carte électronique 72 qui supporte un calculateur 74 de type microprocesseur, ainsi qu'une mémoire 76 de type RAM. Il est également prévu des moyens non représentés de communication entre le calculateur 74 et la mémoire 76. En variante, plusieurs calculateurs et/ou plusieurs mémoires peuvent être supportés par la carte 72.The main controller 70 comprises an electronic card 72 which supports a microprocessor-type computer 74, as well as a memory 76 of the RAM type. Unrepresented means of communication between the computer 74 and the memory 76 are also provided. As a variant, several computers and / or several memories may be supported by the card 72.

Le contrôleur 70 est également relié à un codeur 48 monté sur un arbre d'entraînement des cadres de griffes de la mécanique 4, qui permet de déterminer la position angulaire de cet arbre dans son cycle de rotation. Un signal électronique S48 est fourni au contrôleur 70 par le codeur 48.The controller 70 is also connected to an encoder 48 mounted on a drive shaft of the claw frames of the mechanics 4, which makes it possible to determine the angular position of this shaft in its cycle of rotation. An electronic signal S 48 is supplied to the controller 70 by the encoder 48.

Le contrôleur principal 70 émule un écran 80 disposé au voisinage du métier 2 et auquel il est relié par une liaison filaire 82.The main controller 70 emulates a screen 80 disposed in the vicinity of the loom 2 and to which it is connected by a wired link 82.

Un premier câble électrique 92 relie la carte 72 à la carte 42A du contrôleur secondaire 40A. Un deuxième câble électrique 94 relie entre elles les cartes 42A et 42B. Un troisième câble électrique 96 relie la carte 42B à la carte 72. Il est ainsi formé une liaison électrique série 90 entre les cartes 72, 42A et 42B, cette liaison étant en boucle fermée.A first electrical cable 92 connects the card 72 to the card 42A of the secondary controller 40A. A second electrical cable 94 interconnects the cards 42A and 42B. A third electrical cable 96 connects the card 42B to the card 72. A series 90 electrical connection is thus formed between the cards 72, 42A and 42B, this link being in a closed loop.

Les éléments 40A, 40B, 60A, 60B, 70, 80 et 90 constituent ensemble un système 100 de contrôle du fonctionnement de la mécanique 4. Les éléments 40A, 40B, 60A et 60B sont intégrés à la mécanique 4, alors que les éléments 70 et 80 sont situés à l'extérieur de cette mécanique, comme représenté sur la figure 1.The elements 40A, 40B, 60A, 60B, 70, 80 and 90 together constitute a system 100 for controlling the operation of the mechanism 4. The elements 40A, 40B, 60A and 60B are integrated in the mechanism 4, whereas the elements 70 and 80 are located outside this mechanics, as shown on the figure 1 .

La liaison 90 est de type RS 422 et des connecteurs adaptés sont prévus respectivement aux extrémités des câbles 92, 94 et 96, d'une part, et sur les bornes correspondantes des cartes 72, 42A et 42B.The link 90 is of the RS 422 type and suitable connectors are provided respectively at the ends of the cables 92, 94 and 96, on the one hand, and on the corresponding terminals of the cards 72, 42A and 42B.

La mémoire 76 est destinée à contenir l'ensemble des informations relatives à une armure à réaliser pour le tissage d'un tissu. Ces informations concernent l'ensemble des crochets de la mécanique 4 et l'ensemble des duites.The memory 76 is intended to contain all the information relating to an armor to be made for weaving a fabric. This information concerns all the hooks of the mechanics 4 and the set of picks.

La mémoire 46A est prévue, quant à elle, pour contenir les informations d'armure pertinentes pour les dispositifs de sélection 20 alimentés et commandés par le contrôleur secondaire 40A. De la même façon, la mémoire 46B est prévue pour contenir les informations d'armure pertinentes pour les dispositifs 20 alimentés et commandés par le contrôleur secondaire 40B. En d'autres termes, les mémoires 46A et 46B contiennent uniquement des informations d'armure concernant les groupes de dispositifs 20 commandés par le contrôleur secondaire 40A ou 40B auquel elles appartiennent.The memory 46A is intended, in turn, to contain the relevant armor information for the selection devices 20 powered and controlled by the secondary controller 40A. Similarly, the memory 46B is provided to hold the relevant weave information for the devices 20 powered and controlled by the secondary controller 40B. In other words, the memories 46A and 46B contain only weave information concerning the groups of devices 20 controlled by the secondary controller 40A or 40B to which they belong.

La liaison 90 permet d'alimenter ou de « charger » les mémoires 46A et 46B avec les données pertinentes qui les concernent. Pour ce faire, un signal de données S1 est adressé par le contrôleur 70, à travers la liaison 90 successivement aux contrôleurs secondaires 40A et 40B. Plus précisément, le signal de données S1 est adressé par le contrôleur 70 au contrôleur 40A à travers le câble 92. Ce signal est traité par le calculateur 44A pour en extraire les données à charger dans la mémoire 46A. Ce signal est ensuite adressé à travers le câble 94, du contrôleur secondaire 40A vers le contrôleur secondaire 40B où il est traité par le calculateur 44B pour charger la mémoire 46B. Ce signal est ensuite réacheminé en direction du contrôleur 70. En d'autres termes, le signal S1 parcourt la boucle 90 du contrôleur 70 vers le contrôleur secondaire 40A, puis vers le contrôleur secondaire 40B, puis en retour vers le contrôleur 70.The link 90 makes it possible to feed or "load" the memories 46A and 46B with the pertinent data which concerns them. To do this, a data signal S 1 is addressed by the controller 70, through the link 90 successively to the secondary controllers 40A and 40B. More specifically, the data signal S 1 is addressed by the controller 70 to the controller 40A through the cable 92. This signal is processed by the computer 44A to extract the data to be loaded into the memory 46A. This signal is then addressed through the cable 94, from the secondary controller 40A to the secondary controller 40B where it is processed by the computer 44B to load the memory 46B. This signal is then redirected towards controller 70. In other words, signal S 1 travels loop 90 from controller 70 to secondary controller 40A, then to secondary controller 40B, and back to controller 70.

Le signal S1 permet aux calculateurs 44A et 44B de charger les mémoires 46A et 46B avec les données d'armure relatives à la duite en cours et aux deux duites suivantes, étant entendu que les contenus respectifs des mémoires 46A et 46B ne sont pas effacés pour ce qui concerne les deux duites précédentes. Ainsi, les mémoires 46A et 46B contiennent des informations d'armure relatives à la duite en cours, aux deux duites précédentes et aux deux duites suivantes.The signal S 1 enables the computers 44A and 44B to load the memories 46A and 46B with the weave data relating to the current pick and the following two picks, it being understood that the respective contents of the memories 46A and 46B are not erased. as far as the two previous ones are concerned. Thus, memories 46A and 46B contain armor information relating to the current pick, the two previous picks and the next two picks.

Toutefois, en variante, on peut prévoir que ces mémoires contiennent uniquement les informations d'armure relatives à la duite en cours, ou à la duite en cours et à la duite précédente.However, alternatively, it can be provided that these memories contain only the armor information relating to the current pick, or the current pick and the previous pick.

La liaison 90 sert également à véhiculer des signaux de commande pour les contrôleurs secondaires 40A et 40B. Ces signaux sont adressés par le contrôleur principal 70 aux contrôleurs secondaires à travers la liaison 90, dans le sens inverse du sens de circulation du signal S1. En d'autres termes, le signal électronique S2 contenant les signaux de commande est adressé par le contrôleur 70 au contrôleur 40B, à travers le câble 96. Il est alors exploité par le microcalculateur 44B. Ce signal transite ensuite par le câble 94, du contrôleur secondaire 40B vers le contrôleur secondaire 40A où il est traité par le calculateur 44A. Il retourne enfin du contrôleur secondaire 40A vers le contrôleur principal 70 à travers le câble 92.The link 90 also serves to convey control signals for the secondary controllers 40A and 40B. These signals are sent by the main controller 70 to the secondary controllers through the link 90, in the opposite direction of the flow direction of the signal S 1 . In other words, the electronic signal S 2 containing the control signals is addressed by the controller 70 to the controller 40B, through the cable 96. It is then operated by the microcomputer 44B. This signal then passes through the cable 94, from the secondary controller 40B to the secondary controller 40A where it is processed by the computer 44A. It finally returns from the secondary controller 40A to the main controller 70 through the cable 92.

Comme deux types de signaux transitent par la liaison 90, les protocoles de transmission de ces signaux peuvent être spécifiques et adaptés à leur nature.Since two types of signals pass through the link 90, the protocols for transmitting these signals can be specific and adapted to their nature.

En pratique, un signal d'alarme S3 peut également transiter dans la liaison 90, de chacun des contrôleurs secondaires 40A ou 40B, vers le contrôleur principal 70.In practice, an alarm signal S 3 can also pass through the link 90 of each of the secondary controllers 40A or 40B to the main controller 70.

Les signaux échangés a travers la liaison 90 sont donc de trois types : les signaux de données S1 concernant les états d'alimentation des électroaimants 22, les signaux de commande S2 et les signaux d'alarme S3. Ces signaux sont transmis par quatre paires différentielles de conducteurs formant les câbles 92 et équivalents, à savoir deux pour les signaux de données S1, une pour les signaux de commande S2 et une pour les signaux d'alarme S3.The signals exchanged through the link 90 are thus of three types: the data signals S 1 relating to the supply states of the electromagnets 22, the control signals S 2 and the alarm signals S 3 . These signals are transmitted by four differential pairs of conductors forming the cables 92 and equivalent, namely two for the data signals S 1 , one for the control signals S 2 and one for the alarm signals S 3 .

Dans la pratique, les transmissions de signaux effectuées au travers de la liaison 90 satisfont la norme RS422 qui permet un débit élevé et présente une excellente immunité aux bruits électromagnétique. Les données peuvent être encodées de manières connues suivant le protocole de communication UART (Universal Asynchronous Receiver Transmitter). Cependant, la structure en boucle de la liaison 90 permet l'utilisation avantageuse du protocole de communication SPI (Serial Peripheral Interface).In practice, the signal transmissions performed through the link 90 satisfy the RS422 standard which allows high throughput and excellent immunity to electromagnetic noise. The data can be encoded in known ways according to the Universal Asynchronous Receiver Transmitter (UART) communication protocol. However, the loop structure of the link 90 allows the advantageous use of the Serial Peripheral Interface (SPI) communication protocol.

Pour chaque duite de l'armure à réaliser, le contrôleur principal 70 détermine, pour chaque dispositif de sélection 20 de la mécanique 4, l'état d'alimentation de son électroaimant 22.For each pick of the armor to be made, the main controller 70 determines, for each selection device 20 of the mechanical 4, the power state of its electromagnet 22.

Cette détermination a lieu de façon anticipée, de telle sorte que chaque contrôleur secondaire 40A ou 40B dispose en permanence dans sa mémoire 46A ou 46B des états d'alimentation des différents dispositifs 20 qu'il commande pour les deux duites précédant la duite en cours, pour la duite en cours et pour les deux duites suivantes. En parallèle, chaque contrôleur secondaire 40A ou 40B envoie séquentiellement les états d'alimentation vers les électroaimants 22 qu'il contrôle, à travers les nappes de câble 50. En pratique, chaque contrôleur secondaire 40A ou 40B remplit séquentiellement les registres à décalage 34 des cartes électroniques 30 qui lui sont raccordées.This determination takes place in advance, so that each secondary controller 40A or 40B always has in its memory 46A or 46B power states of the various devices 20 that it controls for the two picks preceding the current pick, for the current pick and for the next two picks. In parallel, each secondary controller 40A or 40B sequentially sends the power states to the electromagnets 22 it controls, through the cable plies 50. In practice, each secondary controller 40A or 40B sequentially fills the shift registers 34 of the electronic cards 30. connected to it.

Comme le contrôleur 70 est en liaison directe avec le capteur de position angulaire 48, il connaît en permanence la position du métier, ce qui lui permet de transmettre en temps voulu l'ordre d'alimentation aux différents contrôleurs secondaires 40A et 40B, sous la forme du signal S2. Les électroaimants 22 sont ainsi activés au bon moment et sans défaut par le contrôleur secondaire 40A ou 40B auquel ils sont raccordés.Since the controller 70 is in direct connection with the angular position sensor 48, it continuously knows the position of the loom, which enables it to transmit in due time the feed order to the different secondary controllers 40A and 40B, under the form of the signal S 2 . The electromagnets 22 are thus activated at the right moment and without fault by the secondary controller 40A or 40B to which they are connected.

A la fin de la transmission des états d'alimentation des électroaimants 22 aux différentes cartes électroniques 30, chaque contrôleur secondaire 40A ou 40B récupère l'état des registres 34 de ces différentes cartes et peut procéder au traitement des erreurs détectées. Ce traitement consiste principalement pour le contrôleur secondaire 40A ou 40B à comparer le contenu des registres à décalage qu'il vient de recevoir des cartes 30 par rapport à celui qu'il avait envoyé lors d'une duite précédente. Le contrôleur secondaire 40A ou 40B est en mesure de diagnostiquer une surchauffe s'il constate que le contenu du registre à décalage du module correspondant a été mis à zéro. Le rang du registre à décalage concerné permet de localiser précisément le module en défaut. En suivant également un principe de comparaison, le contrôleur secondaire 40A ou 40B est en mesure de diagnostiquer une bobine en court-circuit ou cassée.At the end of the transmission of the power states of the electromagnets 22 to the different electronic boards 30, each secondary controller 40A or 40B recovers the state of the registers 34 of these different cards and can process the detected errors. This processing mainly consists of the secondary controller 40A or 40B to compare the contents of the shift registers that it has just received from the cards 30 compared to the one that it had sent during a previous pick. The secondary controller 40A or 40B is able to diagnose overheating if it finds that the contents of the shift register of the corresponding module has been set to zero. The rank of the shift register concerned makes it possible to precisely locate the faulty module. Also following a comparison principle, the secondary controller 40A or 40B is able to diagnose a short-circuited or broken coil.

Ce traitement est implémenté par les contrôleurs secondaires 40A et 40B pour chaque ensemble de dispositifs de sélection 20 associé à un contrôleur secondaire 40A ou 40B à travers une nappe de câbles 50. Il est donc plus rapide que dans le cas où un seul calculateur devrait traiter des informations relatives à l'ensemble des électroaimants d'une mécanique Jacquard. Il peut, par voie de conséquence, être plus sophistiqué. Ainsi, un type de défaut peut être signalé sans entraîner l'arrêt total du métier 2.This processing is implemented by the secondary controllers 40A and 40B for each set of selection devices 20 associated with a secondary controller 40A or 40B through a cable layer 50. It is therefore faster than in the case where a single computer should process information relating to all the electromagnets of a Jacquard machine. It can, consequently, be more sophisticated. Thus, a type of defect can be reported without causing the total stop of the trade 2.

Une erreur détectée par l'un des contrôleurs secondaires 40A et 40B est signalée par l'émission d'un signal d'alarme S3 adressé à travers la liaison 90 au contrôleur principal 70 qui peut exploiter ce signal. En particulier, l'erreur peut être signalée par le contrôleur 70 au métier 2.An error detected by one of the secondary controllers 40A and 40B is signaled by the transmission of an alarm signal S 3 addressed through the link 90 to the main controller 70 which can exploit this signal. In particular, the error can be signaled by the controller 70 to the job 2.

Le contrôleur principal 70 peut alors ordonner sans délai l'arrêt du métier à tisser. A la suite de quoi, il peut interroger par des signaux de commande S2 l'ensemble des contrôleurs secondaires 40A et 40B afin d'obtenir des informations sur la nature et la localisation exacte de la défaillance.The main controller 70 can then order without delay the stopping of the loom. Subsequently, it can interrogate by S 2 control signals all the secondary controllers 40A and 40B to obtain information on the nature and the exact location of the failure.

Le dialogue entre le contrôleur principal 70 et les contrôleurs secondaires 40A et 40B a lieu à travers la liaison 90, en parallèle à la transmission des états d'alimentation des différents électroaimants 22 aux différentes cartes électroniques 30. Il est donc possible de procéder à une vérification de cohérence, comme expliqué ci-dessus.The dialogue between the main controller 70 and the secondary controllers 40A and 40B takes place through the link 90, in parallel with the transmission of the power states of the different electromagnets 22 to the different electronic boards 30. It is therefore possible to carry out a consistency check, as explained above.

Comme la liaison 90 est une liaison série en boucle entre les différents contrôleurs 70, 40A et 40B, le nombre de câble de connexion est réduit par rapport aux dispositifs connus, chaque câble comprenant quatre paires différentielles de conducteurs, comme expliqué ci-dessus.Since the link 90 is a serial loop link between the different controllers 70, 40A and 40B, the number of connection cables is reduced compared to the known devices, each cable comprising four differential pairs of conductors, as explained above.

L'adaptation du système de contrôle 100 au format du métier 2 et de la mécanique 4 a lieu en adaptant le nombre de contrôleurs secondaires 40A, 40B, ... qui sont intégrés à la boucle de commande.The adaptation of the control system 100 to the format of the trade 2 and the mechanical 4 takes place by adapting the number of secondary controllers 40A, 40B, ... which are integrated in the control loop.

Dans le deuxième mode de réalisation de l'invention représenté à la figure 3, les éléments analogues à ceux du premier mode de réalisation portent les mêmes références. Dans ce qui suit, on ne décrit que ce qui distingue ce deuxième mode de réalisation du précédent. Dans ce mode de réalisation, deux mécaniques Jacquard 4 et 4' sont utilisées pour commander les arcades d'un métier à tisser 2, auquel sont accrochées des lisses 6. Chaque mécanique Jacquard intègre des dispositifs de sélection 20 comprenant des électroaimants, commandé par des cartes électroniques communes 30 et qui sont contrôlés par des contrôleurs secondaires 40A, 40B, 40'A, 40'B équipés chacun d'un calculateur 44A, 44B, 44'A, 44'B de type microprocesseur et d'une mémoire RAM 46A, 46B, 46'A, 46'B. Chaque contrôleur secondaire 40A, 40B, 40'A, 40'B est respectivement alimenté par une source de tension dédiée 60A, 60B, 60'A, 60'B. Un unique contrôleur principal 70 est utilisé et comprend un calculateur 74 et une mémoire 76 de type RAM montés sur une carte électronique 72. Le contrôleur 70 est relié aux différents contrôleurs secondaires 40A, 40B, 40'A et 40'B par une liaison série en boucle 90 qui comprend un premier câble 92 qui relie le contrôleur 70 au contrôleur secondaire 40A, un deuxième câble 94 qui relie le contrôleur 40A au contrôleur 40B, un troisième câble 96 qui relie le contrôleur 40B au contrôleur 40'B, un quatrième câble 98 qui relie le contrôleur 40'B au contrôleur 40'A et un cinquième câble 99 qui relie le contrôleur 40'A au contrôleur 70.In the second embodiment of the invention shown in figure 3 elements similar to those of the first embodiment bear the same references. In what follows, only what distinguishes this second embodiment from the previous one is described. In this embodiment, two Jacquard machines 4 and 4 'are used to control the arches of a loom 2, to which are hung 6. Each Jacquard mechanism includes selection devices 20 comprising electromagnets, controlled by common electronic cards 30 and which are controlled by secondary controllers 40A, 40B, 40'A, 40'B each equipped with a microprocessor-type computer 44A, 44B, 44'A, 44'B and a RAM 46A , 46B, 46'A, 46'B. Each secondary controller 40A, 40B, 40'A, 40'B is respectively powered by a dedicated voltage source 60A, 60B, 60'A, 60'B. A single main controller 70 is used and comprises a computer 74 and a memory 76 of RAM type mounted on an electronic card 72. The controller 70 is connected to the different secondary controllers 40A, 40B, 40'A and 40'B by a serial link in a loop 90 which includes a first cable 92 which connects the controller 70 to the secondary controller 40A, a second cable 94 which connects the controller 40A to the controller 40B, a third cable 96 which connects the controller 40B to the controller 40'B, a fourth cable 98 which connects the controller 40'B to the controller 40'A and a fifth cable 99 which connects the controller 40'A to the controller 70.

Les composants 44A, 46A, 44B, 46B, 44'A, 46'A, 44'B et 46'B sont respectivement montés sur des cartes électroniques 42A, 42B, 42'A, 42'B. En pratique, la liaison 90 relie entre elles les cartes 72, 42A, 42B, 42'B et 42'A dans cet ordre.The components 44A, 46A, 44B, 46B, 44'A, 46'A, 44'B and 46'B are respectively mounted on electronic boards 42A, 42B, 42'A, 42'B. In practice, the link 90 interconnects the cards 72, 42A, 42B, 42'B and 42'A in this order.

Un écran de contrôle 80 est relié au contrôleur 70 par une liaison filaire 82.A control screen 80 is connected to the controller 70 by a wired link 82.

Il est ainsi créé un système 100 de contrôle des mécaniques 4 et 4', ce système comprenant les éléments 40A, 40B, 40'A, 40'B, 60A, 60B, 60'A, 60'B, 70, 80 et 90.It is thus created a system 100 for controlling the mechanicals 4 and 4 ', this system comprising the elements 40A, 40B, 40'A, 40'B, 60A, 60B, 60'A, 60'B, 70, 80 and 90 .

La circulation de signaux de données S1, de signaux de commande S2 et de signaux d'alarme S3 peut avoir lieu comme expliqué pour le premier mode de réalisation, dans deux sens opposés, à travers les différents câbles de la liaison 90.The flow of data signals S 1 , control signals S 2 and alarm signals S 3 can take place as explained for the first embodiment, in two opposite directions, through the different cables of the link 90.

Les contrôleurs secondaires 40'A et 40'B de la deuxième mécanique Jacquard 4' n'ont pas à fonctionner en tant qu'esclaves de ceux de la première mécanique 4.The secondary controllers 40'A and 40'B of the second Jacquard 4 'do not have to function as slaves of those of the first mechanical 4.

Si plus de deux mécaniques Jacquard doivent être commandées avec le contrôleur principal 70, la configuration de la liaison 90 est adaptée, tout en conservant une architecture série en boucle. Par exemple, des contrôleurs secondaires incorporés à une troisième mécanique Jacquard peuvent être raccordés en série entre les contrôleurs 40B et 40'B.If more than two Jacquard machines are to be controlled with the main controller 70, the configuration of the link 90 is adapted, while maintaining a looped serial architecture. For example, secondary controllers incorporated in a third Jacquard mechanism can be connected in series between the controllers 40B and 40'B.

Dans les deux modes de réalisation mentionnés ci-dessus, comme les signaux de commande S2 et les signaux de données S1 sont transmis aux différents contrôleurs secondaires 40A, 40B, etc... dans des sens opposés de la boucle de liaison 90, il est possible de localiser aisément un problème de transmission.In the two embodiments mentioned above, as the control signals S 2 and the data signals S 1 are transmitted to the different secondary controllers 40A, 40B, etc. in opposite directions of the connection loop 90, it is possible to easily locate a transmission problem.

Selon une variante de l'invention, on peut prévoir que les mémoires 46A, 46B et éventuellement les mémoires 46'A, 46'B des contrôleurs secondaires 40A, 40B, et éventuellement 40'A, 40'B ne disposent que des informations d'armure de dessin qui concernent le groupe de dispositifs 20 qu'ils contrôlent et la duite en cours. Dans ces conditions, les contrôleurs secondaires n'ont besoin que d'une mémoire de taille limitée. Le transfert des informations d'armure de dessin, selon le signal S1, entre le contrôleur principal 70 et les contrôleurs secondaires 40A, 40B, 40'A, 40'B ... s'effectue en temps masqué de chaque duite. Il est alors envisageable de changer d'armure sans arrêter le métier à tisser 2.According to a variant of the invention, provision may be made for the memories 46A, 46B and possibly the memories 46'A, 46'B of the secondary controllers 40A, 40B, and possibly 40'A, 40'B to have only the information of armor drawing that relate to the group of devices 20 they control and the current pick. Under these conditions, the secondary controllers need only a memory of limited size. The transfer of design armor information, according to the signal S 1 , between the main controller 70 and the secondary controllers 40A, 40B, 40'A, 40'B ... is performed in masked time of each pick. It is then possible to change armor without stopping the loom 2.

Lorsque les mémoires des contrôleurs secondaires stockent, en plus des données relatives à la duite en cours, celles relatives à la duite précédente, les contrôleurs secondaires peuvent procéder à la comparaison du contenu des registres des différentes cartes électroniques 30 par rapport à la situation de la duite précédente, à la fin de la transmission des états d'alimentation de la duite en cours. Ceci permet de détecter d'éventuels défauts.When the memories of the secondary controllers store, in addition to data relating to the current pick, those relating to the previous pick, the secondary controllers can proceed to compare the contents of the registers of the different electronic cards 30 with respect to the situation of the previous selection, at the end of the transmission of the power states of the current pick. This makes it possible to detect possible faults.

Dans le cas où les mémoires des contrôleurs secondaires contiennent, non seulement les informations relatives à la duite en cours, mais également les informations relatives aux deux duites précédentes et aux deux duites suivantes, les opérations de recherche de duites consécutives à un défaut métier ne nécessitent pas de transfert de données immédiat entre le contrôleur principal 70 et les contrôleurs secondaires 40A, 40B, 40'A, 40'B.In the case where the memories of the secondary controllers contain not only the information relating to the current pick, but also the information relating to the two preceding picks and the two picks that follow, the search operations for picks consecutive to a business defect do not require no transfer of immediate data between the main controller 70 and the secondary controllers 40A, 40B, 40'A, 40'B.

L'invention a été représentée dans le cas où la ou chaque mécanique Jacquard comprend deux contrôleurs secondaires 40A, 40B ou 40'A, 40'B. Le nombre de ces contrôleurs secondaires présents au sein de chaque mécanique Jacquard peut être supérieur à deux, par exemple compris entre trois et douze. Dans ce cas, la liaison série 90 entre les contrôleurs secondaires au sein de la mécanique Jacquard est effectuée au moyen de câbles électriques analogues aux câbles 94 et 99.The invention has been shown in the case where the or each Jacquard mechanism comprises two secondary controllers 40A, 40B or 40'A, 40'B. The number of these secondary controllers present within each Jacquard mechanism may be greater than two, for example between three and twelve. In this case, the serial link 90 between the secondary controllers within the Jacquard mechanism is performed by means of electrical cables similar to the cables 94 and 99.

L'invention a été représentée dans le cas où les contrôleurs secondaires sont intégrés à une mécanique Jacquard, alors que le contrôleur principal est disposé à l'extérieur de cette machine. En variante, le contrôleur principal peut être intégré à la ou à l'une des mécaniques Jacquard.The invention has been shown in the case where the secondary controllers are integrated in a Jacquard mechanism, while the main controller is disposed outside of this machine. Alternatively, the main controller can be integrated with the or one of the Jacquard machines.

L'invention s'applique également aux mécanismes Jacquard destinés aux métiers de tissage de tapis, c'est-à-dire dont les dispositifs de sélection permettent le choix d'une position de l'arcade parmi plus de deux positions.The invention also applies to Jacquard mechanisms for carpet weaving, that is to say whose selection devices allow the choice of a position of the arcade among more than two positions.

Les caractéristiques techniques des modes de réalisation et variantes envisagées ci-dessus peuvent être combinées entre elles.The technical characteristics of the embodiments and variants envisaged above can be combined with each other.

Claims (14)

- Système (100) de contrôle d'au moins une mécanique Jacquard (4, 4') de formation de la foule comprenant des dispositifs de sélection électromécaniques (20), ce système comprenant : - un contrôleur principal (70) comportant au moins un calculateur principal (74) et au moins une mémoire principale (76) ; - au moins deux contrôleurs secondaires (40A, 40B, 40'A, 40'B) comportant chacun au moins un calculateur secondaire (44A, 44B, 44'A, 44'B) et au moins une mémoire secondaire (46A, 46B, 46'A, 46'B) chaque contrôleur secondaire étant apte à commander un groupe de dispositifs de sélection (20) ;
caractérisé en ce que le contrôleur principal (70) et les contrôleurs secondaires (40A, 40B, 40'A, 40'B) sont connectés entre eux par une liaison série (90) en boucle. A system (100) for controlling at least one crowd forming Jacquard (4, 4 ') comprising electromechanical selection devices (20), the system comprising: a main controller (70) comprising at least one main computer (74) and at least one main memory (76); at least two secondary controllers (40A, 40B, 40'A, 40'B) each comprising at least one secondary computer (44A, 44B, 44'A, 44'B) and at least one secondary memory (46A, 46B, 46'A, 46'B) each secondary controller being adapted to control a group of selection devices (20);
characterized in that the main controller (70) and the secondary controllers (40A, 40B, 40'A, 40'B) are connected to each other by a loop serial link (90). Système selon la revendication 1, caractérisé en ce que la liaison (90) entre le contrôleur principal (70) et les contrôleurs secondaires (40A, 40B, 40'A, 40'B) est de type RS 422.System according to Claim 1, characterized in that the connection (90) between the main controller (70) and the secondary controllers (40A, 40B, 40'A, 40'B) is of the RS 422 type. Système selon l'une des revendications précédentes, caractérisé en ce que la liaison (90) entre le contrôleur principal (70) et les contrôleurs secondaires (40A, 40B, 40'A, 40'B) est apte à convoyer des signaux de commande (S2) et des signaux de données (S1).System according to one of the preceding claims, characterized in that the link (90) between the main controller (70) and the secondary controllers (40A, 40B, 40'A, 40'B) is capable of conveying control signals (S 2 ) and data signals (S 1 ). Mécanique Jacquard (4) pour la formation de la foule sur un métier à tisser (2), caractérisé en ce qu'elle est équipée d'un système de contrôle (100) selon l'une des revendications précédentes.Jacquard mechanism (4) for forming the shed on a loom (2), characterized in that it is equipped with a control system (100) according to one of the preceding claims. Métier à tisser (2) comprenant au moins une mécanique Jacquard (4) selon la revendication 4.A loom (2) comprising at least one jacquard machine (4) according to claim 4. Métier à tisser selon la revendication 5, caractérisé en ce qu'il comprend au moins deux mécaniques Jacquard (4, 4') incorporant chacune au moins deux contrôleurs secondaires (40A, 40B, 40'A, 40'B) et en ce que les différents contrôleurs secondaires des différentes mécaniques Jacquard sont connectés entre eux et à un unique contrôleur principal (70) par la liaison série en boucle (90).Weaving machine according to claim 5, characterized in that it comprises at least two Jacquard machines (4, 4 ') each incorporating at least two secondary controllers (40A, 40B, 40'A, 40'B) and in that the different secondary controllers of the different Jacquard machines are connected to each other and to a single main controller (70) by the loop serial link (90). Méthode de contrôle d'au moins une mécanique Jacquard (4, 4') de formation de la foule comprenant des dispositifs de sélection électromagnétiques commandés par : - un contrôleur principal (70) comportant au moins un calculateur principal (72) et au moins une mémoire principale (76) ; - au moins deux contrôleurs secondaires (40A, 40B, 40'A, 40'B) comportant chacun au moins un calculateur secondaire (44A, 44B, 44'A, 44'B) et au moins une mémoire secondaire (46A, 46B, 46'A, 46'B), chaque contrôleur secondaire étant apte à commander un groupe de dispositifs de sélection (20) ;
caractérisé en ce qu'au moins des signaux de commande (S2) et/ou des signaux de données (S1) circulent dans une liaison série en boucle (90) entre le contrôleur principal (70) et les contrôleurs secondaires (40A, 40B, 40'A, 40'B). A method of controlling at least one crowd forming Jacquard machine (4, 4 ') comprising electromagnetic selection devices controlled by: a main controller (70) comprising at least one main computer (72) and at least one main memory (76); at least two secondary controllers (40A, 40B, 40'A, 40'B) each comprising at least one secondary computer (44A, 44B, 44'A, 44'B) and at least one secondary memory (46A, 46B, 46'A, 46'B), each secondary controller being adapted to control a group of selection devices (20);
characterized in that at least control signals (S 2 ) and / or data signals (S 1 ) flow in a loop serial link (90) between the main controller (70) and the secondary controllers (40A, 40B, 40'A, 40'B). Méthode selon la revendication 7, caractérisée en ce que les signaux (S1, S2, S3) qui circulent dans la liaison série en boucle (90) sont conformes à un protocole de communication de type SPI (Serial Peripheral Interface).Method according to claim 7, characterized in that the signals (S 1 , S 2 , S 3 ) flowing in the loop serial link (90) conform to a Serial Peripheral Interface (SPI) type communication protocol. Méthode selon l'une des revendications 7 ou 8, caractérisée en ce que les signaux de commande (S2) parcourent la liaison dans un premier sens, alors que les signaux de données (S1) parcourent la liaison dans un deuxième sens, inverse du premier sens.Method according to one of claims 7 or 8, characterized in that the control signals (S 2 ) traverse the link in a first direction, whereas the data signals (S 1 ) traverse the link in a second, opposite direction. of the first sense. Méthode selon l'une des revendications 7 à 9, caractérisée en ce que la mémoire secondaire (46A, 46B, 46'A, 46'B) d'un contrôleur secondaire (40A, 40B, 40'A, 40'B) contient uniquement des informations d'armure concernant le groupe de dispositifs de sélection (20) commandés par ce contrôleur secondaire, pour au moins la duite en cours.Method according to one of claims 7 to 9, characterized in that the secondary memory (46A, 46B, 46'A, 46'B) of a secondary controller (40A, 40B, 40'A, 40'B) contains only armor information regarding the selection device group (20) controlled by that secondary controller, for at least the current pick. Méthode selon la revendication 10, caractérisée en ce que la mémoire secondaire (46A, 46B, 46'A, 46'B) d'un contrôleur secondaire (40A, 40B, 40'A, 40'B) contient au moins des informations d'armure relatives à la duite en cours et la duite précédente.Method according to claim 10, characterized in that the secondary memory (46A, 46B, 46'A, 46'B) of a secondary controller (40A, 40B, 40'A, 40'B) contains at least armor relating to the current duite and the previous pick. Méthode selon la revendication 11, caractérisée en ce que la mémoire secondaire (46A, 46B, 46'A, 46'B) d'un contrôleur secondaire (40A, 40B, 40'A, 40'B) contient des informations d'armure relatives à la duite en cours, aux deux duites précédentes et aux deux duites suivantes.Method according to claim 11, characterized in that the secondary memory (46A, 46B, 46'A, 46'B) of a secondary controller (40A, 40B, 40'A, 40'B) contains armor information on the current pick, at the two previous picks and at the next two picks. Méthode selon l'une des revendications 7 à 12, caractérisée en ce que les défaillances des dispositifs de sélection électromécaniques (20) sont traitées par les contrôleurs secondaires (40A, 40B) qui, en cas de défaillance, émettent sur la liaison série en boucle (90) un signal d'alarme (S3) à destination du contrôleur principal (70).Method according to one of claims 7 to 12, characterized in that the failures of the electromechanical selection devices (20) are processed by the secondary controllers (40A, 40B) which, in the event of a fault, transmit on the looped serial link (90) an alarm signal (S 3 ) to the main controller (70). Méthode selon l'une des revendications 7 à 13, caractérisé en ce que des signaux d'alarme (S3) circulent également dans la liaison série en boucle (90), des contrôleurs secondaires (40A, 40B, 40'A, 40'B) vers le contrôleur principal (70).Method according to one of claims 7 to 13, characterized in that alarm signals (S 3 ) also flow in the loop serial link (90), secondary controllers (40A, 40B, 40'A, 40 ' B) to the main controller (70).
EP20100192664 2009-11-27 2010-11-26 System and method for controlling a Jacquard mechanism, Jacquard mechanism and loom provided with such a system Active EP2330237B1 (en)

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EP1559816A2 (en) * 2004-01-29 2005-08-03 Staubli Faverges Shedding device, loom provided with such a device and method implemented by this device
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US20170088981A1 (en) * 2015-09-29 2017-03-30 Staubli Lyon Control system for a jacquard mechanism, jacquard mechanism and weaving machine equipped with such a system
FR3041662A1 (en) * 2015-09-29 2017-03-31 Staubli Lyon SYSTEM FOR CONTROLLING A JACQUARD MECHANICS, JACQUARD MECHANICS AND WEAVING EQUIPPED WITH SUCH A SYSTEM
EP3150754A1 (en) 2015-09-29 2017-04-05 Staubli Lyon Control system for a jacquard mechanism, jacquard mechanism and weaving machine equipped with such a system
US10294588B2 (en) 2015-09-29 2019-05-21 Staubli Lyon Control system for a jacquard mechanism, jacquard mechanism and weaving machine equipped with such a system

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CN102094278A (en) 2011-06-15
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FR2953224B1 (en) 2011-12-30
EP2330237B1 (en) 2012-10-10

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