EP0513339A1 - Conduite de processus pour l'industrie textile - Google Patents

Conduite de processus pour l'industrie textile

Info

Publication number
EP0513339A1
EP0513339A1 EP92902312A EP92902312A EP0513339A1 EP 0513339 A1 EP0513339 A1 EP 0513339A1 EP 92902312 A EP92902312 A EP 92902312A EP 92902312 A EP92902312 A EP 92902312A EP 0513339 A1 EP0513339 A1 EP 0513339A1
Authority
EP
European Patent Office
Prior art keywords
machine
control
computer
process control
spinning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92902312A
Other languages
German (de)
English (en)
Other versions
EP0513339B1 (fr
Inventor
Heinz Biber
Urs Andreas Meyer
Urs Meyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
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Priority claimed from CH1025/91A external-priority patent/CH684952A5/de
Application filed by Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0513339A1 publication Critical patent/EP0513339A1/fr
Application granted granted Critical
Publication of EP0513339B1 publication Critical patent/EP0513339B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/32—Counting, measuring, recording or registering devices

Definitions

  • the invention relates to process control systems, in particular for spinning mills.
  • Process data acquisition appeared in 1980 as an intermediate stage on the way to the process control system. It was described, for example, in W.Kistler's article "Process data acquisition as a management tool” in May 1984 in “Textile Practice International”. The further development of process data acquisition can then be followed by the following articles:
  • the BARCO CIM system can be listed as state of the art in January 1991. This system has been described in the publication "CIM in Spinning” by Barco Automation Inc. Charlotte, NC, USA. There is one “data unit” (machine terminal) per machine, the process control computer (the control center) exchanging signals with the data units of the machines. The data unit (with its displays) also serves as operator support. Although the aforementioned publication mentions bidirectional communication, the system is obviously still primarily set up for data acquisition on the machine and forwarding to the central office. A connection with the machine control is neither shown nor indicated. Such data units can be integrated in a single network, which simplifies the system architecture - at most at the expense of system flexibility and the speed of reaction.
  • Process control systems are now part of the long-established state of the art in certain industries. The question arises as to why these "known principles" cannot easily be implemented in the textile industry, but are only applied with difficulty and gradually. The answer lies in part in the fact that a process control system is difficult to "impose” on a machine complex (such as a spinning mill). Process control systems are relatively easy to introduce where IT and process technology are developed at the same time. This is e.g. in the field of chemical fiber processing (filament spinning) rather the case, so that the introduction of process control systems into the filament spinning mill could already be provided in the Dornbirn conference in 1981 (lecture by K. Ibounig - “Change in process control technology by microelectronics”) .
  • the IT in the spinning plant is part of the overall automation. Ultimately, their purpose is to better master yarn production. They are the yardstick Production costs.
  • the boundary conditions are determined by the raw material market, the local operating conditions and the yarn buyers. The following explanations refer to the conditions in the short-staple spinning mill.
  • the ring spinning of a yarn made of combed cotton serves as an example. However, the invention can be used in other spinning plants and for the production of other end products.
  • the spinning process involves the conversion of a natural product with only limited predictable properties into a precisely specified intermediate product (yarn). Due to the division into a number of different stages, yarn production is also particularly demanding in terms of process technology.
  • the added value is unevenly distributed over the individual process stages of the spinning mill: in the cleaning and carding machines, the cleaning effect is in the foreground, which primarily has a major influence on the running behavior in the final spinning of the fibers Has.
  • the subsequent process steps of combing and drawing are decisive for the properties of the finished game, since they serve to refine the raw material and to make the fiber structure more uniform.
  • These sections of production represent only a limited part of the added value in today's spinning mill, but are crucial for process control.
  • the benefit potential is primarily limited to the use of inexpensive raw material.
  • most of the added value lies in the final spinning process. This is where the qualitatively precisely specified yarn is created, and at the end of the final spinning there is a test for "good” or "inferior” (or even “scrap").
  • a further analysis of the added value shows that the most significant improvement potential lies in the personnel requirements.
  • the ring spinning process is particularly exemplary here. 2 shows the personnel requirements in the different process stages. The operation does not require long training, but an extremely high level of reliability. A single confusion of two roving bobbins in the night shift is enough to make the entire production unusable for several days at worst - and this may only be recognized when the finished fabric is dyed. Older systems in particular require particularly conscientious and attentive operating personnel.
  • a very important component in process control is starting up, changing over and stopping the production line. This is a particularly attractive goal for automation: the shutdown of the plant, which is widespread in Western Europe over the weekend, not only brings costly downtimes, but also marked unrest in the process. Each standstill of a machine represents a malfunction and after a short time brings further upstream or following machines out of the production cycle. Starting up a spinning plant is always risky in terms of process technology. The priority in automation therefore is not the automatic startup of the system, but the avoidance of downtimes. Low-personnel shifts at night or at the weekend will largely prevent booting in the future.
  • Fig. 3 summarizes the functions and the requirements for the temporal capabilities of the process control in the spinning mill.
  • This invention is based on a third concept, namely the introduction of new spinning machines with controllable properties for operation with a closed control loop. This also includes troubleshooting by operating robots (normal case) and operating personnel (exceptional case, repair). This concept means switching to actual process control. It sets a high degree of Automation and process monitoring ahead. 4 summarizes a corresponding overview of the introduction of process information technology in the spinning mill.
  • the step into process control requires efficient communication that is also designed for future tasks.
  • the standard interface currently used is sufficient for the acquisition of operating data, but not for the process control of connected machines.
  • the limit of possible applications is not only the transmission capacity:
  • the process control itself is dependent on the highest level of operational security, the operator guidance (alarms) associated with it, however, is dependent on high speed and high data throughput. Both functions of the network have a direct influence on the process flow. Since the regular inspection tours by the operator are no longer necessary, a modern, highly automated spinning plant will absolutely depend on a well-developed alarm system.
  • a comprehensive compression and evaluation of the sensor signals can no longer be carried out in every machine control because of the required computing capacity. Efficient quality recording must therefore have access to the raw data directly from the sensor.
  • a prior compression by a local evaluation unit makes a future expansion of the functions extremely complex. The transfer of raw data is not time-critical and endures - 11 -
  • FIG. 5 summarizes the requirements for the data transmission capabilities of a network that is designed to fulfill the functions shown in FIG. 3.
  • Telecommunications hardly takes the textile industry into account when developing network standards. For this reason, only products with a wide industrial spread are selected, if only to ensure the necessary service life and reliability. The required hardware components and software drivers are precisely specified and no longer need to be specially developed.
  • the invention provides a spinning plant with a process control computer for at least one machine group, each machine in the group being provided with its own control which controls the machine's actuators (including any auxiliary units assigned to this machine).
  • At least one network is provided for bidirectional communication between the computer and each machine in the group. Control commands from the process control computer are passed to the machine controls during operation of the system via the network. Each machine controller forwards the control commands to the actuators controlled by this controller, the control commands being converted by the machine controller into control signals suitable for the actuators if necessary.
  • control commands can be transmitted directly from the process control computer to the machine controls. However, this transmission can also take place via a further device, e.g. via a "machine station" of the type described in EP 0 365 901. It is important, however, that neither the process control computer nor a transmitting device (such as such machine stations) is granted direct access to the actuators of the machine. Instead, a change in the machine state, which requires an intervention in the actuator system, can only be effected by means of the machine controller (and according to the work program effective in this controller).
  • connection of the machine control with its (controlled) actuator system can be designed independently of the communication network between the machine controller and the process control computer and can even be different for different actuator elements (or auxiliary units).
  • the connection between the machine control and the existing actuators can be implemented via the autonomous workstation controls, for example according to DOS 3928831 or according to DOS 3910181 or according to DPS 3438962.
  • auxiliary unit is designed as a mobile automat and is designed for communication with a central unit via the work stations, as is provided, for example, in EP 0295406.
  • the signal connection to the machine control can be based on electrical, optical, magnetic, pneumatic, mechanical (or other) signal transmission means.
  • each machine control system is able to translate (convert) the control commands received from the process control computer into suitable signals for its own actuator elements.
  • the process control computer can accordingly work with a single set of control commands for a given machine type, regardless of whether the machines of this type connected to the process control computer are equipped with the same or with different actuator elements or auxiliary units.
  • the sensor system of the machine preferably includes at least one safety sensor system, which is connected to the machine controller for signal transmission.
  • the machine controller is preferably continuously able to generate an image of the state (in particular the safety state) of the machine by means of the sensors.
  • the machine control can then be programmed in such a way that it only executes a control command from the process control computer when the machine can be converted into the new state without endangering people, machines or operating devices after the image of the state of the machine.
  • the "safety state" of the machine therefore includes both the Safety of human operation as well as that of any mobile operating devices (in particular automatic operating devices) present on the machine and elements integrated in the machine. This is of course particularly important in connection with people who can move freely around the machine at any time, but also in connection with any mobile devices that are not continuously but only occasionally on the machine, e.g. transport devices for original material.
  • the invention is implemented in a system according to our PCT patent application with the international publication number WO 91/16481, i.e. in a system in which at least one machine control has a user interface and the process control computer can use this user interface for communication with a person or with a mobile machine on this machine.
  • This arrangement makes it relatively easy to ensure that a definite meaning is assigned to a certain signal in the entire system controlled by the computer.
  • This can be compared to a system, according to which the operator support is provided via a system that is independent of the machine controls, e.g. according to US 4194349.
  • the advantages of the combination according to this invention are particularly pronounced when a process control computer influences both the operating support and the control of the machines, e.g. in a doff management system for ring spinning machines, similar to a system according to US 4665686.
  • the operator support via the operator interface on the relevant machine naturally also ensures that the help is offered where it is necessary.
  • the alarm or call system must of course still ensure that the operator is informed of the urgency or priority of the operator call or that the correct operator or operator (doffing aid, maintenance, thread breakage elimination, etc.) is addressed to the person concerned Machine is called.
  • An instruction can be given to the operator via the user interface to take an action which cannot be carried out by the machine control itself, e.g. because the necessary actuators are not available in the relevant machine or are not under the control of the machine control.
  • An example of such an action namely the decommissioning of a poorly working spinning station where the machine control cannot intervene directly in the spinning stations
  • the operator can also be asked to enter certain information (data) into the communication system (e.g. a keyboard). These data complete e.g. the image of the system in the process control computer if the appropriate sensors are missing in the guided machines.
  • the operator is also preferably able (or is even "forced") to cause the generation of a signal which represents the execution of the instruction and communicates this to the machine control or the process control computer.
  • the preferred system according to this invention is provided with a sensor system which ensures the operation of the system even without the process control signals of the process control computer.
  • the system is as "Conventionally” operated system designed, ie it is provided at the machine level with such a sensor system and with such machine controls connected to this sensor system that the system is fully operational even without the process control computer.
  • control signals generated by the operational process control computer then have an optimizing effect on the otherwise operable system, the machine controls of the system being able to check the plausibility of the control signals at any time using the signals from the sensors connected to them.
  • a machine control only executes a control command from the process control computer if the plausibility check does not reveal a contradiction between the control signal (control command) of the process control computer and the state of the system determined by the sensors. Otherwise the machine control triggers an alarm signal.
  • the "control commands" of the process control computer are normally generated in the form of setpoints or are intended to trigger processes or state transitions on the machine (the machines).
  • the system can be operated "conventionally” in the sense that already known controls and sensors are sufficient to operate the system without the process control computer.
  • These controls which are known today, can of course still be improved, but can still be regarded as “conventional” as long as they are able to keep the system operational without the process control computer. If the process control computer fails, the operator may or may have to perform certain functions of the process control computer. In this case, the possibility of human intervention in the "conventional" system control must be provided. But it is also desirable for other reasons, the possibility of individual intervention by the operator in the To provide process sequences of the plant, even if the plant as a whole is controlled or regulated by the process control computer.
  • the invention therefore provides a spinning plant with the following features:
  • a process control computer for at least one group of the machines of the system, an autonomous control for each machine of this group, a network for bidirectional communication between the process control computer and the autonomous controls, with control commands from the process control computer to the controls via the network can be transmitted, for at least one control, such operating means that this control can be reset by the operating means, the operating means comprising a selectively operable means, as a result of which this control can be set in a first or a second state , so that in its first state the control only responds to the operating means and in its second state the control responds both to the operating means and to control signals from the process control computer.
  • the operator is able at any time (via the "operating means") to intervene in the process sequences of the system, whether the process control computer is operational or Not. Furthermore, the operator is able to decouple each individual machine or at least certain machines from the process control computer and then, for example, connect search, carry out maintenance work or changes on this selected machine.
  • the or each machine or the sensor system for supplying the control computer with data is preferably provided with local storage means for the provisional storage of the accruing data Data connected.
  • the data stored in this way can be delivered to the master computer.
  • Each "communication unit” device that supplies data to the master computer via the network
  • the "acknowledgment" (confirmation of the arrival of the delivered data in the process control computer) can be used to connect the appropriate sensor system with the provisional storage means.
  • the resulting (raw) data can be entered in a local buffer memory and can only be supplied to the network therefrom if "it is guaranteed" that the communication with the process control computer proceeds as planned.
  • raw data are supplied to the process control computer.
  • Raw data do not (necessarily) mean the actual output signals of the sensors, but at least the full “information content” of such signals.
  • the guided system is fully operational despite the presence of the process control computer without this computer, for which purpose the machines are provided with the sensors required for this.
  • FIG. 6 is a layout diagram of a spinning mill up to spinning (without rewinding)
  • FIG. 7 is a summary of the diagram of FIG. 6;
  • FIG. 8 shows a computer arrangement for a process control in a system according to FIG. 7,
  • 10 is a diagrammatic representation of the connection between a machine control and a spinning station
  • 11 shows a diagrammatic representation of the connection between a machine control and a winding unit
  • FIG. 13 shows a modification of the architecture according to FIG. 12,
  • FIG. 16 shows a schematic cross section through a ring spinning machine with some auxiliary devices
  • FIG. 17 shows a schematic layout of a spinning room which comprises robots as auxiliary devices
  • Fig. 21 (schematically) the so-called speed curve of the ring spinning machine
  • the spinning mill shown in FIG. 6 comprises a bale opener 120, a coarse cleaning machine 122, a mixing machine 124, two fine cleaning machines 126, twelve cards 128, two draw frames 130 (first draw frame passage), two comb preparation machines 132, ten combing machines 136, four lines 138 (second line passage), five flyers 140 and forty ring spinning machines 142.
  • Each ring spinning machine 142 comprises a large number of spinning positions (up to approximately 1200 spinning positions per machine). This is explained in more detail below in connection with FIG. 16.
  • FIG. 6 shows a conventional arrangement for the production of a so-called combed ring yarn.
  • the ring spinning process can be replaced by a newer spinning process (eg rotor spinning), in which case the flyers are then superfluous.
  • a newer spinning process eg rotor spinning
  • the explanation in connection with conventional ring spinning is also sufficient for the application of the invention in connection with new spinning processes.
  • the winder which is eliminated in any case for new spinning processes (for example rotor spinning).
  • the spinning mill according to FIG. 6 is again shown schematically in FIG. 7, in which case the machines have been combined into “processing stages”.
  • the bale opener 120 and the coarse cleaning machine 122, mixing machine 124 and fine cleaning machines 126 together form a so-called cleaning shop 42, which supplies the carding machine 44 with largely opened and cleaned fiber material.
  • the fiber material is transported from machine to machine in a pneumatic transport system (air flow) within the punching machine, which system is terminated in the carding machine.
  • the cards 128 each supply a band as an intermediate product, which has to be deposited in a suitable container (a so-called "can”) and transported further.
  • the first route passage (through the routes 130) and the second route passage (through the routes 136) each form a processing stage 46 or 52 (FIG. 7).
  • the combing preparation machines 132 form a processing stage 48 (FIG. 7) and the combing machines 134 form a processing stage 50 (FIG. 7).
  • the flyers 138 form a spinning preparation stage 54 (FIG. 7) and the ring spinning machines 140 form a final spinning stage 56 (FIG. 7).
  • the area B1 includes the blowroom 42 and the carding machine 44 (FIG. 7).
  • the area B2 comprises both the two route passages 146, 152 (FIG. 7) as well as the comb preparation stage 148 and the comb 150.
  • the area B3 comprises the flyer 154 and the final spinning stage 156 (FIG. 7), possibly also a winder.
  • FIGS. 6 to 8 The adaptation of the systems according to FIGS. 6 to 8 to the principles explained in connection with FIGS. 1 to 5 is explained in more detail below with reference to FIGS. 9 to 14.
  • the area B3 (FIG. 8) serves as an example here.
  • FIG. 9 A practical embodiment of the area B3 for an automated system is shown in FIG. 9, but still schematically, in order to illustrate the IT aspects of the system.
  • the system part shown comprises (in the order of the process stages, i.e. the "chaining" of the machines):
  • flyer level 300 a flyer level 300
  • a final spinning stage 320 in this case formed by ring spinning machines
  • a roving conveyor system 310 for carrying flyer bobbins from flyer stage 300 to final spinning stage 320 and empty tubes from final spinning stage 320 back to flyer stage 300, and
  • Each processing stage 300, 320, 330 comprises a plurality of main work units (machines), each of which is provided with its own control. This control is not shown in FIG. 9, but is explained in more detail below in connection with FIG. 10. Attached to the respective machine control are robotics units (operating machines) that are directly assigned to this machine. In FIG. 9, a separate doffer is provided for each flyer of level 300 - the “flyer opening” function is indicated in FIG. 9 with the box 302.
  • One possible implementation is e.g. shown in EP-360 149 and DE-OS-3 702 265.
  • an automatic control unit per row of spinning stations for operating the spinning stations and a push-on operation for the roving feed are also provided for each ring spinning machine of stage 320.
  • the function "spinning station pedaling" is indicated by boxes 322, 324 (one box per row of spinning stations) and the function "roving feed” by boxes 326.
  • a possible embodiment is shown, for example, in EP-41 99 68 or PCT patent application no. PCT / CH / 91/00225 dated November 2, 1991.
  • the roving transport system 310 is also provided with its own control system, which will not be explained in more detail here.
  • System 310 includes a roving bobbin cleaning unit before being returned to flyer stage 300.
  • the function "roving bobbin cleaner" is indicated by the box 312.
  • a possible embodiment of this plant part is shown in EP-43 12 68 (and partly in EP-39 24 82).
  • the ring spinning machines of stage 320 and winding machines of stage 330 together form a "machine network", which ensures that the cops are transported to the winding machines. This assembly is controlled from the winder.
  • a network 350 is provided, whereby all the machines of the stages 300, 320, 330 and the system 310 for signal exchange (data transmission) are connected to a process control computer 340.
  • the computer 340 directly operates an alarm system 342 and an operator 344 e.g. in a control center or in a master's office.
  • a very important function of the rewinding of ring spun yarn is the so-called yarn cleaning, which is indicated by the box 360.
  • the yarn cleaner is connected to the process control computer 340 via the network 350. Yarn defects are eliminated by this device and at the same time information (data) is obtained which enables conclusions to be drawn about the preceding process stages.
  • the thread cleaning function is carried out on the winder.
  • FIGS. 10 and 11 show somewhat more detailed but still schematic representations of a ring spinning machine 321 (FIG. 10) of stage 320 and a winding machine 331 (FIG. 11) of stage 330.
  • the control of the machine 321 is indicated schematically by 323 and the control of the machine 331 by 333.
  • a single working position 330 (FIG. 10), 380 (FIG. 11) is indicated schematically for each machine 321, 331.
  • the work station 370 comprises a suspension (not shown) in the attachment (not shown) for a flyer bobbin 371, which supplies roving 372 to a drafting system 373.
  • the fibers emerging from the drafting system 373 are spun into a yarn 374, which is wound up on a tube 375 to form a cop 376.
  • the sleeve 375 is carried by a spindle (not shown) which is set in rotation about its own longitudinal axis by a drive motor 373 (single spindle drive) assigned to this spindle.
  • the work station 380 of the winding machine includes a feed (not shown) for individual head carriers 381 (e.g. so-called “peg trays"), each of which carries a head 382.
  • the yarn 383 of the cop is unwound and delivered to a thread changer 385 via a game server 384.
  • a bobbin holder (not shown) carries a sleeve (not shown) as the core of a pack 386, which is formed by the rotation of the sleeve about its own (horizontal) axis with an axial movement of the thread generated by the traversing.
  • each work station 370, 380 is provided with its own sensors. In the case of the ring spinning machine, this consists of a simple sensor 378 per spinning station in order to determine whether the spinning station (of the spindle motors 377) is in operation or not.
  • the winding unit 380 can be provided with a corresponding sensor 387.
  • the winding unit 380 is additionally provided with a yarn testing device 361, which forms an element of the yarn cleaner 360 (FIG. 9).
  • the yarn testing device comprises a yarn sensor (not indicated separately), the predetermined quality parameter of the yarn is monitored and supplies corresponding signals (data) to a data acquisition unit 362 of the machine 331, which summarizes the data for all winding units of this machine.
  • the data unit 362 represents a further element of the yarn cleaner 360.
  • the controls 323, 333 and the data unit 362 are connected to the control computer 340 (FIG. 9) via lines 351, 352 and 353 of the network 350 (FIG. 9).
  • the data unit 362 also exchanges signals with the controller 333 of the winding machine.
  • the automatic controls can also be provided with sensors, for example as shown in our US Pat. No. 4,944,033.
  • the system is designed in such a way that the computer 340 has direct access to the "raw data" of the sensors 378, 387, 361, although the individual controls 323, 333, 362 are in the absence of a control command work from the control computer 340 independently of this computer (partially autonomously) on the basis of the output signals of the sensors 378, 387, 361.
  • This means that the raw data of the sensor system are not combined into “reports” by the controllers 323, 333 and 362, which reduce the information content of the sensor system signals by "concentration” and which are forwarded to the master computer. Instead, they are passed on to the master computer (at least on request from the master computer 340) as unchanged quality or status signals.
  • "Raw data" in the sense of control
  • Each machine 321, 331 is also provided with an “operating surface” 325 or 335, which is connected to the respective control 323 or 333 and enables human-machine (or even robot-machine) communication.
  • the "operating surface” can also be used as a "control panel”, or “Operating panel” or “operating console” are designated.
  • An example of such a user interface is shown in DE-OS-37 34 277, but not for a ring spinning machine, but for a draw frame. The principle is the same for all such controls. Further examples can be found in the article "New microcomputers for the textile industry" by F. Hánl in Melliand textile reports from September 1991 (ITMA edition).
  • the current user interface of the G5 / 2 ring spinning machine from Maschinenfabrik RIETER AG has been shown in "Textile World", April 1991, page 44 ff. The further development of such devices can also be expected
  • the system is programmed and designed in such a way that the host computer 340 can provide operator support via the operator interface 325 or 335 of the respective machine, i.e. the master computer can send control commands via the network 350 and the machine controls can receive and follow such control commands, so that the state of the user interface is determined by the master computer 340 via the respective controller.
  • FIG. 12 shows a possible variant of the architecture for a process control according to FIGS. 9 to 11.
  • FIG. 12 again shows the control computer 340 and the network 350 together with a computer 390 of a machine control of the system (for example the roving transport system 310 which is used for Explanation of the information can be equated to a "machine").
  • Each computer 340, 390 has memories 343, 345 and 391 and drivers 347, 349 and 393, 394, 395, 396 assigned to it.
  • the drivers 349 and 394 determine the necessary interfaces for the communication of the computers 340, 390 with their respective user interfaces, here indicated as a display, operator and printer.
  • Driver 347 determines that Interface between the host computer 340 and the network 350 and the driver 393 the interface between the network 350 and the machine controller 390.
  • the driver 395 determines the interfaces between the machine control 390 and the drives controlled thereby (e.g. in the case of the ring spinning machine, FIG. 10, the spindle drive motors 377).
  • the driver 396 determines the interface between the machine control 390 and the sensor system assigned to it (e.g. in the case of the ring spinning machine, FIG. 10, the sensors 378).
  • An additional driver 348 is now assigned to the master computer 340 and determines the interface between the computer 340 and a further network 355.
  • the machines associated with the computer (not shown) are now attached to either network 350 or network 355.
  • the driver / network combinations 347/350 and 348/355 differ in that they are compatible with different machine controls - the machines have to be linked to one or the other network 350 or 355 can be connected.
  • FIG. 14 shows a further modification of the arrangement according to FIG. 12, in which case a single network 350 (shown) or a plurality of networks (not shown) can be used. Elements in FIG. 14 which are identical to elements in FIG. 12 have the same reference symbols in both figures.
  • FIG. 14 shows a further driver 410, which serves as an interface between the network 350 and the control of a further machine 400.
  • This machine 400 is linked to the machine which is controlled by the computer 390, e.g. if the latter machine is a mixing machine, machine 400 may be a bale opener or a card feed.
  • An additional sensor 397 is also attached to the driver 396, which is not provided in the "own” machine but in the next machine 400 of the "chain” and the state of this machine 400 is the "own” machine controller (the computer 390). communicates. Obviously, several such additional sensors can be provided in the other or in various other machines in the chain.
  • Such “spy sensors” enable any semi-autonomous control system to roughly check the commands given by the computer 340 for contradictions. More importantly, the partially autonomous control remains functional even if the network 350 or the master computer 340 has a defect. This will certainly reduce the efficiency of the system; however, it remains in (less than optimal) operation.
  • Fig. 15 shows schematically different terms and conditions for the widespread use of process control systems should be standardized. These conditions should in any case be taken into account when determining the necessary sensors.
  • Diagram A / B indicates a bale opener, C a card, E a combing machine and RU a rotor spinning machine.
  • the ring spinning machine (and its auxiliary devices)
  • the ring spinning machine serves as an example of a "slitting machine".
  • Other slitting machines are flyers, the spinning machines for the new spinning processes (rotor spinning machines, jet spinning machines), winding machines, twisting machines (e.g. double-wire twisting machines) and false-wire texturing machines for processing endless filaments.
  • the machine according to FIG. 16 comprises a double-sided frame 210 with two rows of spinning positions 212 and 214, which are arranged in mirror image to a center plane ME of the machine.
  • each such row of spinning positions 212, 214 contains between 500 and 600 closely spaced spinning positions.
  • Each spinning station comprises a drafting unit 216, thread guide elements 218 and a bobbin-forming unit 220.
  • the unit 220 contains individual ones Working elements, such as, for example, spindle, ring and rotor, which, however, do not play a role in this invention and are not shown individually. These elements are known to the person skilled in the art and can be seen, for example, from EP-A 382943.
  • a doffing machine 222, 224 is provided, which serves all spinning positions of the row of spinning positions assigned to it at the same time. This automat is also not described in detail here, details of which can be found from EP-A 303877.
  • Each row of spinning stations 212 and 214 is also assigned to at least one operating device 226 and 228, which can be moved along the respective row and can carry out operating operations at the individual spinning stations. Details of such an operating device are e.g. to remove from EP-A 388938.
  • the frame 210 carries a gate 230 which is formed from vertical bars 232 and cross members 234. Rails 236 are mounted on the outer ends of the cross members 234 and extend in the longitudinal direction of the machine. Each rail 236 serves as a guideway for a trolley train 238 which brings new coils 240 to the gate 230. Details of such a trolley train can be found in EP-43 12 68.
  • the gate 230 also includes carriers 242 for supply spools 244, 246, which supply the individual spinning stations with roving.
  • the beams 242 are drawn as cross rails, but this arrangement is of no importance for this invention.
  • the supply bobbins for each row of spinning positions 212 and 214 are arranged in two rows, namely in an inner row 244 in the vicinity of the central plane ME and an outer row 246 which removes from the central plane ME is.
  • the cross members 234 also carry a rail arrangement 248 or 250 on each machine side, which serves as a guideway for a respective mobile robot 252 or 254.
  • the robot 252 or 254 therefore runs between the outer supply spool row 246 and the new spools 240 carried by the trolley train 238 and above the respective operating device 226 or 228.
  • the robot 252 is designed to operate the two feed spool rows of the gate, such as was explained in our PCT patent application no. PCT / CH / 91/00225.
  • This robot is designed for sliver handling in such a way that after changing the bobbin in the gate, the fuse of the new bobbin is threaded into the drafting system by the robot.
  • FIG. 17 shows an example of the layout of the spinning room of a ring spinning system which is operated by a robot according to PCT patent application No. PCT / CH / 91/00225.
  • the diagram of FIG. 17 is intended in particular to explain the supply of the spinning machines with the template material to be processed.
  • a flyer 500 supplies spools to four ring spinning machines 504, 506, 508 and 510 via a rail network 302 (with buffer sections 504) for trolleys (not shown).
  • AK or EK indicate the drive head or the end head (removed from the drive head) for each machine.
  • a trolley can be guided on any machine side via switch points 512. Accordingly, each machine is assigned a U-shaped section of the network.
  • the transport device is controlled by a central computer 514 of the transport system.
  • a rail network 516 is also provided for the bobbin changing or sliver handling robot 518, which corresponds to the robot 252, 254 according to FIG. 16.
  • the network 516 comprises a respective U-shaped section for each machine, but this is directed in the opposite direction to the corresponding U-shaped section of the transport network 502.
  • the robot 518 can be guided from one machine to another via connecting pieces 520.
  • Spool change operations are preferably carried out according to a predetermined "change strategy", an example of which is described in PCT Patent Application No. PCT / CH / 91/00225.
  • the changing operations are carried out alternately on one or the other side of the machine in order to reduce the workload of the operating devices 226, 228 (FIG. 16).
  • This is because it is necessary to coordinate a bobbin changing operation with a thread break remedy every time the re-threading of the drafting system is carried out, so that when the bobbin is changed, the operating device 226 or 228 should always be present at the spinning stations concerned.
  • the preferred machine arrangement therefore comprises at least two operating devices (FIG. 16), each of which is assigned to one machine side. While an operating device can therefore be assigned to work on a bobbin changing operation on one machine side, the operating device on the other machine side is free to operate the spinning positions that do not require a bobbin changing operation.
  • the request (in the form of a signal) to bring a fully loaded trolley train out of the Transport device to a specific ring spinning machine is preferably produced by this machine itself (for example according to EP-392482).
  • the positioning of this trolley train in relation to the ring spinning machine then depends on the overall arrangement. It could 'be provided, for example, that an entire side of the machine is always busy with trolley trains, which bobbin change operations are performed by the boter Ro ⁇ .
  • the information regarding the gate positions which are to be occupied by these trolleys should be present in the ring spinning machine or in the robot (rather than in the central control 514 of the transport device).
  • each trolley train must be placed in a suitable position with respect to the ring spinning machine and locked.
  • an interface must preferably be defined between the control 514 of the transport device and the control of the ring spinning machine, so that the movements of the trolley train from this interface are taken over by the ring spinning machine control (e.g. according to EP 392482).
  • the suitable position information can either be given by the robot to the ring spinning machine or it can be present in the ring spinning machine control and transmitted to the robot.
  • the ring spinning machine can count on the triggering of a bobbin change operation either according to time or (preferably) according to the amount of sliver delivered (i.e. depending on the machine speed).
  • a spinning machine needs a transport device not only for feeding the original material but also for conveying the product of the spinning machine itself.
  • Most modern ring spinning machines today are equipped with two conveyor belts according to FIG. 18. Each row of spindles is assigned its own band with a pin. The empty tubes are fed to one pin by the movement of the belt in the longitudinal direction of the machine to the doffing machine and thereby to the spinning stations - the same or other pins attached to the belt serve to remove the full heads after they have been removed from the spindles by the doffing machine ⁇ be taken. Examples of such systems are described in US 3791123; CH 653378 and EP 366048 to find. Newer systems based on the so-called peg tray are e.g. can be found in European patent application No. 45 03 79.
  • the spinning machines according to newer processes need other transport devices, e.g. for conveying cans to or for conveying cross-wound bobbins from the rotor spinning machine.
  • transport devices e.g. for conveying cans to or for conveying cross-wound bobbins from the rotor spinning machine.
  • Examples of such systems can be found in DE 4015938.8 from May 18, 1990 (can supply) and DOS 4011298 and DOS 4112073 (cross-coil transport system).
  • the machine's actuators include both the installed and attached elements and units.
  • the actuators for the built-in elements includes at least drives for the spindles, drafting systems and ring bench.
  • a modernly designed system (single drive) for driving the spindles, ring bench and drafting systems of a ring spinning machine is shown in EP 349831 and 392255, according to which a separate drive motor is provided for each spindle and also for individual drafting system rows.
  • the still most used drive system (central drive) for the ring spinning machine comprises a main motor in the drive head of the machine and transmission means (eg longitudinal shafts, belts or toothed wheels) in order to transmit the drive forces from the main motor to the drive elements.
  • an additional motor must be provided for the Doff devices 222, 224.
  • the actuators for the built-in elements also include the drives for the transport devices for cops (e.g. according to DOS 3610838) or for empty sleeves in the attachment (e.g. according to WO 90/12133).
  • the attached auxiliary units naturally include both the robots 226, 228 and 252, 254 and transport trolleys 238, which are temporarily positioned on the machine.
  • Other examples of such units are cleaning robots, blowers or other mobile machines e.g. for the runner change.
  • auxiliary units have their own drives (mobile automatic controls). Others may not have their own drive but are dependent on a drive attached or installed to the machine (see, for example, the trolley drive according to FIGS. 16 to 18 of WO 90/12133) or a drive according to European patent application No. 42 11 77.
  • the drives of these auxiliary units are also to be regarded as the actuators of the spinning machine, provided that they can be influenced by the machine control.
  • Important actuator elements are those which serve to "shut down" a spinning station, with “shutdown” here "to be understood as an effectively producing spinning station". In most cases, when a single spinning station is shut down, not all the working elements of this spinning station are brought to a standstill, but the spinning is interrupted in this spinning station. This can be done, for example, by cutting off the supply of material and / or by deliberately creating a thread break.
  • a largely automated machine e.g. the rotor spinning machine
  • this can easily be done from a central machine control by one or the other possibility.
  • the drive to the feed roller can be interrupted in order to prevent the supply of material to the opening roller or the rotor of the spinning station.
  • a so-called quality cut can also be carried out in the quality monitoring of the spinning station or winding station in order to interrupt the thread run.
  • Such a "cut” can be caused in the rotor spinning machine or jet spinning machine by deliberately interrupting the feed material.
  • a spinning station can be shut down by a mobile auxiliary unit, e.g. according to the system of European patent applications Nos. 388938, 394671 and 419828 i.e. by actuating a sliver clamp to prevent the supply of material.
  • a sliver clamp to interrupt the material supply will be important in all types of machines, where that Original material is delivered to the spinning elements via a drafting system, because it is normally impossible to park an individual position of a drafting system.
  • An actuating device can of course also be assigned to the sliver clamp of the individual spinning positions. These can then also be operated from a central machine control. Examples of such match clips can be found in EP 322636 and EP 353575.
  • the ring spinning machine which is conventional today (with central drive) normally has a central microprocessor control which generates suitable control signals for the central drive system (usually by controlling frequency converters).
  • a single drive system can e.g. include a "distributed” control system according to EPO 389849.
  • Novel spinning machines rotor or air spinning machines
  • distributed controls see e.g. EP 295406 or the article "Microelectronics - Current and Future Areas of Use in Spinning Mills" in Melliand Textile Reports 6/1985, pages 401 to 407, the distributed controls expediently comprising a central coordinating machine control center. This also applies to winding machines e.g. after the article "The contribution of electronically controlled textile machines to business information technology" by Dr. T. Jogen (Reutlinger Spinnerei colloquium 2/3 December 1987.
  • the mobile auxiliary units each have their own autonomous control - see, for example, EP 295406, EP 394671 or EP 394708 (Obj. 2083). Although these controls work autonomously, each is hierarchically subordinate to the machine control. In the case of an upcoming doffing operation, for example, the robots 226, 228 are switched off by the coordinating machine control Working areas of the automatic doffing machines 222,224 ordered away (e.g. according to DOS 2455495).
  • the control 514 of FIG. 17 is also to be regarded as a "machine control", i.e. in terms of organization, the transport device which connects two processing stages can be regarded as a “machine”. This does not apply if the device in question is installed in a machine or is hierarchically subordinate to a machine control.
  • the rotor spinning machine e.g. has long been provided with a sensor system which reflects both the condition of the individual spinning position and the quality of the yarn produced therein (see EP 156153 and the prior art mentioned therein. For modern monitoring - see ITB yarn production 1/91, Pages 23 to 32.4). Similar systems have also been developed for filament processing in the false twist texturing machine - see e.g. DOS 3005746.
  • the winding machine which processes the cops of the ring spinning machine into cross-wound bobbins, is already equipped with sophisticated sensors - see e.g. DOS 3928831, EP 365901, EP 415222 and US 4984749.
  • the ring spinning machine will probably not receive an internal communication system because of this.
  • Information about the states of the individual spinning stations will therefore not have to be collected from individual sensors at the respective spinning stations, but rather by means of mobile monitoring devices.
  • Further sensors of the ring spinning machine which are important for loading the attachment, can be found, for example, in WO 90/12133. Additional sensors are necessary for the operation of the cop or empty-sleeve transport device, such sensors being known today and therefore not being described in detail here (but see, for example, DE patent 3344473).
  • the sensor system of the spinning machine can be built on instead of being installed.
  • An example of such a system can be found in the article "Monitoring the Quality of OE Rotor Yarns" in ITB Garnfertigung 1/91, pages 23 to 32.
  • the spinning machine Regardless of whether the spinning machine is provided with an attached or built-in sensor system, it will be equipped with at least certain sensor elements which deliver its output signals to the machine control system.
  • These "machine-specific” signals result in an image of the "state” of the machine. Among other things, they answer questions that are important for "security”, eg is a mobile device currently standing or moving in an area where a collision with another machine part (eg a built-in automatic doffing machine) could occur?
  • the corresponding sensors can be referred to as the safety sensors of the corresponding machine.
  • the sensors may be installed on a neighboring machine or a transport system. It is important that the sensor signals are routed to the appropriate machine control.
  • the spinning room shown in Fig. 17 represents only part of the overall system.
  • An entire spinning mill is e.g. shown in DOS 3924779.
  • Other examples can be found in the following articles:
  • a machine Before a machine triggers an action via the actuator system, it is first checked in the image of the machine status generated by the safety sensors whether this action can be carried out without danger and damage.
  • a process control computer is superimposed on the individual machine controls, which are completely sufficient for autonomous operation of the system, in order to form a process control level.
  • 19 shows a corresponding one Execution, which is designed as a modification of the system of FIG. 14.
  • FIG. 19 schematically shows the connection of the process control computer to individual machines. The principles illustrated thereby also apply to the connection with further or with all machines of the overall system.
  • FIG. 19 schematically shows a possible variant of the architecture for a process control with the master computer 340, the network 350, the computer 390 and the computer 410, which were previously described in conjunction with FIG. 14.
  • Each computer 340, 390 still has the memories 343, 345 or 391 assigned to it and drivers 347, 349 (FIG. 14) or 393, 394, (FIG. 14), 395, 396 (FIG. 14), certain elements no longer being shown in FIG. 19 , since they can be seen from Fig. 14.
  • This process control can be provided for the entire system or only for a part of it (e.g. for the spinning hall according to Fig. 9 or 17.
  • Additional drivers 412 and 416 determine the interfaces required for communication between two additional computers 414 and 418 and the network 350. Both additional computers 414, 418 are provided with drivers (not shown) which interface between the respective computers 414, 418 and Display and operating elements, of which only the display 420 and control 422 connected to the computer 414 are shown.
  • the computer 418 controls an air conditioning system, which air-conditioning the room, in which the machines controlled by the computers 390 and 410 are located (among other things).
  • This system of course has nothing to do with the process sequences in and of itself, but has a decisive influence on the environment in which these processes have to be carried out and, accordingly, the results of these processes achieved.
  • the climate The system is provided with a sensor system, which is represented schematically in FIG. 19 by a sensor 424.
  • the computer 414 controls a data acquisition system which is attached to the machine controlled by the computer 390.
  • the data acquisition system comprises a sensor system which is represented in FIG. 19 by sensors 426 and 428.
  • the sensor system of the detection system obtains measurement data about states in the machine controlled by the computer 390, but does not deliver the corresponding output signals (raw data) to the computer 390, but to the computer 414.
  • This can (but does not have to) connect 430 to the Computer 390, which is explained in more detail below, but still delivers the raw data obtained via the network 350 to the computer 340.
  • the process control computer 340 can now send control commands via the network 350 to the computer 390 and / or to the computer 414. If such control commands are received by computer 414 and relate to the data acquisition system, no communication over connection 430 is necessary. However, if such commands concern the actuator system of the machine itself, they must be forwarded to the machine controller 390 via the connection 430 if they are received by the computer 414.
  • This arrangement is not desirable since the process control computer 340 preferably communicates directly with the computer 390. However, the arrangement is not excluded from the invention and could prove to be necessary if the "cooperation" of the data acquisition system is necessary in order to convert the results obtained from its data into control commands for the machine.
  • Computer 432 controls e.g. a control device which is permanently assigned to the machine controlled by the computer 390.
  • the computer 432 cannot communicate directly with the process control computer 340, but only via the computer 390.
  • the computer 432 receives control commands from the computer 390 and otherwise works as an autonomous unit. It controls its own drives 434,436 and has its own sensors 438,440.
  • Sensor 438 is provided for monitoring an operating state of the autonomous unit (the operating device) - sensor 440, on the other hand, monitors a state of the machine controlled by computer 390.
  • the raw data of the sensor 440 are accordingly forwarded continuously or intermittently to the computer 390.
  • a sensor 442 provided in the machine could be provided to monitor a state of the autonomous unit. Its raw data would not have to be forwarded to the computer 432, but would influence the control commands directed to it.
  • connection 444 between the computers 390 and 432 does not have to exist continuously.
  • a suitable connection between the control of a ring spinning machine and a piecing robot subordinate to these machines has been shown in our European patent application No. 394671.
  • the computer 432 (like the computers 390 and 414) can be provided with its own display or operating elements, but these are not shown in FIG. 19.
  • a machine disconnected from the process control computer is again under the full control of the operating personnel. Then e.g. Maintenance work or tests (regardless of the managed system) are carried out.
  • a "decoupled” machine is preferably not completely isolated from the process control system - it continues to report its respective status information to this system, but no longer responds to control commands from its respective host computer.
  • the "switch” functions in a certain sense as a “diode” which enables signal transmission in one direction only.
  • the communication between the machine control and the process control computer continues to function even after the "switch" has been actuated; however, the machine control has been changed over so that it no longer sends control commands from the process control computer (after the switch has been actuated) to the actuators, but only control commands that are entered via the control system.
  • the operator support is maintained by the process control computer, even for a machine that is "decoupled" from the process control system.
  • this support is provided via the machine user interface and the communication between the machine control and the process control computer is maintained even when the machine is decoupled from the process control system.
  • the machine control can then forward commands from the process control computer to the user interface, but can isolate the machine actuators from the commands of the control computer until the uncoupling is canceled.
  • the process control computer should be able to use the operating support to indicate that the uncoupled machine is "desired", e.g. because the production of this machine is necessary to fulfill an urgent production order.
  • switching means for example provided in connection with the machine control
  • switching means in order to switch off the actuator system (or predetermined elements thereof) without the communication between the Cancel process control computer and the user interface (or other support means).
  • Means can therefore be provided to continue operating a decoupled machine in various ways, e.g. in "normal operation” (but without the function of the process control computer) or in “service operation".
  • Various "keys” could even be provided to set the machine in one or the other operating condition.
  • the states of the machine are preferably still reported to the process control computer.
  • Each machine control as well as the process control computer stores an image of the respective controlled system part.
  • the process control computer has much more data to process than a machine control system that it controls. Since the processing (interpretation) of this information takes a certain amount of time, it cannot be assumed that a control command from the process control computer adequately takes into account the current state of the controlled machine. This is particularly important in connection with the safety status of the machine. The "responsibility" for safety is therefore set at the machine control level.
  • the safety essentially depends on movements of the machine parts. These movements determine geometrically definable "fields" or (three-dimensional) "spaces". It is therefore possible to assign responsibility for a given safety field or safety room to a specific control system. This principle is explained below with reference to FIG. 20 explained in more detail, wherein two-dimensional fields are shown as examples.
  • 20A shows the simplest example - the "safety field" 550 of a machine 552 envelops the machine with a predetermined distance, which takes into account the maximum dimensions of movable machine parts (e.g. doffer bar 222, 224, FIG. 16). All movable elements subordinate to the machine control can move within this safety field (e.g. also operating robots).
  • a movable element e.g. a transport trolley
  • a safety field 560 of a machine 562 The following options can be provided:
  • Fig. 20D shows a variant where a "changeable" safety field 572 is assigned to a machine 570, e.g. because this field comprises a movable extension 574 corresponding to a mobile robot.
  • a second element e.g. a blower
  • a "duty to evade" for one or the other movable element can be predetermined.
  • the functions of a host computer should be differentiated from the functions of a data acquisition system, whereby the host computer can also perform acquisition tasks.
  • the task of data acquisition is to create a meaningful overview. Possibilities are shown, for example, in the article "Process data acquisition in the ring spinning mill - application and further processing of the process data from USTER RINGDATA using a practical example” by W. Schaufelberger. The article was presented at the Reutlinger Spinnerei Kolloquium on 2/3 December 1986.
  • the function of the host computer in the spinning mill depends on the task set by the user. This function can consist, for example, of optimizing the basically autonomously operable system based on a predetermined strategy. Another task can be to operate the system over longer periods without operator intervention.
  • the host computer needs e.g. the following information:
  • the spinning machines of the new spinning processes are usually able to send the necessary information to the process control computer deliver, at least in the sense that the information is available in the machine itself.
  • Today's ring spinning machine is only able to provide the necessary information via auxiliary units, even then quality information must be obtained from the yarn cleaner of the winding machine (see, for example, EP 365901).
  • Our Swiss patent application No. 697/91 dated March 7, 1991 shows a possibility of optimizing the interaction between the automatic controls of the ring spinning machine and the yarn cleaner of the winding machine by exchanging the information stocks of the two machines.
  • the process control computer therefore preferably has access via its communication network or its communication networks to the raw data of the sensor system in the system that is important to it, or in the machines controlled by it.
  • the raw data contain the full information of a specific sensor (important for the process control system), possibly prepared in such a way that misinterpretations are avoided.
  • a specific sensor important for the process control system
  • the invention is based on a clear "division of tasks" between the process control system (process control computer) and the machine controls.
  • the process control computer has access to the raw data of the system's sensors, but no direct "control authorizations".
  • the process control computer issues control commands in the sense of setpoints or changes in setpoint status (for example "premature spinning") to the machine control, but these commands only after processing by the own control program and taking into account those currently reproduced state of the elements and units controlled by it as control signals to the actuators.
  • the software of the machine control must be received by the host computer control commands for plausibility kontrollie ⁇ reindeer. This applies to all aspects of controllable 'processes, so that the machine control a "privilege” can get, "calling into question” a control command when this command does not match the image of the machine status stored in the machine control.
  • the software of the machine control can, for example, be designed in such a way that it only follows such a control command when it is confirmed by an input from the personnel or when a machine condition permitting the intervention is reached.
  • the host computer can influence these settings by means of setpoints given to the machine controller (s) and adapt them to the changes in the environment. If e.g. If an analysis shows that the number of thread breaks in the start-up phase of the cop assembly exceeds the realistically expected values (empirically determined over time), the "speed curve" (FIG. 21) of the machine can be adjusted in order to reduce the number of thread breaks in this phase again .
  • This curve defines the setpoints for the speed of the main drive motor (or the individual spindle motors) via the cop assembly (see e.g. CH 1374/91 - see DOS 4015638).
  • the host computer can send an instruction via the network 350 to the machine concerned, this instruction must be displayed on the machine's user interface. If it is urgently necessary to adapt the operating conditions, the host computer must simultaneously send a warning call (for example according to PCT patent application No. W091 / 16481) to the appropriate personnel in order to find the most suitable person on the need / type of the required readjustment to draw attention to (alarm system). Under no circumstances can the process control computer intervene directly in the workflow of the process - this is retained by the machine controls.
  • the influence of the host computer is an indirect influence via setpoints or operator support.
  • FIG. 22 schematically shows a machine 580 with its own control 582, which controls machine actuators 584 and receives messages (signals, data) from the machine sensors 586.
  • This control is in the form of a computer with suitable programs (software).
  • the machine is also provided with a so-called "communication board” 588, which is coupled to the controller 582 and has a connection means which is intended to couple the board 588 to the communication network.
  • the connection means can e.g. to be formed with a coaxial cable or light guide or with a twisted double wire.
  • the network is designed as a bus and is operated according to the so-called “polling method” (time sharing), after which the coupled communication boards are queried in sequence or supplied with data.
  • the communication board 588 preferably comprises a memory which serves as a buffer memory for the data supplied or the data to be sent.
  • This buffer memory is preferably "overdimensioned" compared to normal operation and can therefore store data that accumulates over a predetermined period that lasts longer than the polling interval specified by the system.
  • the communication board also has the aforementioned drivers (programs). The board compiles data from the memory into data packets that can be sent to the master computer via the network.
  • the process control computer and the network are often (mostly) supplied and installed by a system supplier. There are then two possibilities for determining the Interface between the elements supplied by the machine manufacturer and the system. According to the first possibility, the interface is between the communication board 588 and the controller 582. However, this can lead to problems in adapting the board to the controller.
  • the communication board 588 and the machine control are adapted to one another by the machine manufacturer and prepared for connection to the system. To this end, it is necessary to agree a suitable protocol (transmission mode) and a common "object directory" with the system supplier, the latter directory defining the information received by the signals.
  • the process control computer and the machine control are thus mutually communication-capable.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

Filature possédant un ordinateur de conduite de processus pour au moins un groupe de machines, chaque machine du groupe étant équipée de sa propre commande, qui commande le système d'actionnement de la machine (et tous les appareils auxiliaires éventuellement rattachés à cette machine). Il est prévu au moins un réseau pour la communication bidirectionnelle entre l'ordinateur et chaque machine du groupe. Lorsque l'installation est en service, les instructions de commande de l'ordinateur de conduite de processus sont transmises par le réseau aux systèmes de commande des machines. Chaque système de commande de machine transmet les instructions de commande au système d'actionnement commandé par cette commande, les instructions de commande étant, si nécessaire, transformées par le système de commande de la machine en signaux de commande adaptés au système d'actionnement.
EP92902312A 1991-01-23 1992-01-21 Installation avec un ordinateur de contrôle de procédé Revoked EP0513339B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
CH189/91 1991-01-23
CH18991 1991-01-23
CH18991 1991-01-23
CH102591 1991-04-05
CH1025/91A CH684952A5 (de) 1991-04-05 1991-04-05 Längsteilmaschine zur Verwendung in einer Maschinengruppe mit einem Prozessleitrechner.
CH1025/91 1991-04-05
PCT/CH1992/000014 WO1992013121A1 (fr) 1991-01-23 1992-01-21 Conduite de processus pour l'industrie textile

Publications (2)

Publication Number Publication Date
EP0513339A1 true EP0513339A1 (fr) 1992-11-19
EP0513339B1 EP0513339B1 (fr) 2001-05-09

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EP92902312A Revoked EP0513339B1 (fr) 1991-01-23 1992-01-21 Installation avec un ordinateur de contrôle de procédé

Country Status (5)

Country Link
US (1) US5517404A (fr)
EP (1) EP0513339B1 (fr)
JP (1) JP3242915B2 (fr)
DE (1) DE59209902D1 (fr)
WO (1) WO1992013121A1 (fr)

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EP0513339B1 (fr) 2001-05-09
US5517404A (en) 1996-05-14
WO1992013121A1 (fr) 1992-08-06
DE59209902D1 (de) 2001-06-13
JP3242915B2 (ja) 2001-12-25

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