WO2010034333A1 - Procédé pour faire fonctionner une installation technique industrielle, installation technique industrielle et composant pour une telle installation - Google Patents

Procédé pour faire fonctionner une installation technique industrielle, installation technique industrielle et composant pour une telle installation Download PDF

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Publication number
WO2010034333A1
WO2010034333A1 PCT/EP2008/008358 EP2008008358W WO2010034333A1 WO 2010034333 A1 WO2010034333 A1 WO 2010034333A1 EP 2008008358 W EP2008008358 W EP 2008008358W WO 2010034333 A1 WO2010034333 A1 WO 2010034333A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
state
configuration data
state variable
account
Prior art date
Application number
PCT/EP2008/008358
Other languages
German (de)
English (en)
Inventor
Edgar Frank
Benjamin Kohler
Jörg Middel
Wolfgang Riedl
Christian Strömsdörfer
Michael Wieczorek
Sebastian Wittig
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP08802756A priority Critical patent/EP2350752A1/fr
Priority to PCT/EP2008/008358 priority patent/WO2010034333A1/fr
Publication of WO2010034333A1 publication Critical patent/WO2010034333A1/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/32—Operator till task planning
    • G05B2219/32021—Energy management, balance and limit power to tools
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34315—Power supply turning on or shutting off
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • an industrial installation usually also includes components which, depending on the respective operating state of the installation, are not needed at least temporarily could therefore be switched off in order to achieve energy savings.
  • this may, for example, relate to a situation in which the production or at least one plant component involved in the production is not fully utilized or, for example, due to maintenance or repair work, there is a plant stop.
  • the present invention has for its object to provide a method for operating an industrial plant, which makes it possible to automatically switch at least one component of the system depending on the particular operating situation in an energy-saving idle state.
  • This object is achieved by a method for operating an industrial plant, wherein for at least one component of the system at least one relevant for the operation of each component state variable of the system is continuously detected, the at least one detected state variable taking into account in the respective Component is stored component-specific Cheiji fürsquel evaluated by the respective component to whether an at least partial shutdown of the component without affecting the operation of the system is possible, and, if so, at least a portion of the respective component of the respective component itself an operating state is switched to an energy-saving idle state.
  • the method according to the invention is advantageous in that it enables components of an industrial-technical system to decide for themselves, depending on the situation, whether they are working without impairing the operation of the bearing. or partially shut down yourself. This is made possible by means of an evaluation which, in addition to component-specific configuration data stored in the respective component, at least takes into account a relevant plant size for the operation of the respective component. Due to the component-specific configuration data, the component is known to the extent necessary for its integration into the industrial plant. This is a prerequisite for the component to be able to decide based on the at least one continuously detected state variable whether it is expedient for the component to switch at least a part of itself from an operating state into the energy-saving idle state.
  • this decision can advantageously be taken very quickly, so that energy can be saved in a particularly efficient manner.
  • a corresponding decision is made by a central control component of the industrial installation
  • the necessity of a message exchange between the respective component and the central control component is avoided, and in many cases the complexity of the overall system reduced.
  • This may also be advantageous, for example, if the configuration of the industrial plant changes frequently, since in such a case, if the method according to the invention is used, no or only slight changes in the component-specific configuration data may be required.
  • the inventive method is so pronounced that is switched at least one part of each component of the respective component itself in HP ⁇ ener ⁇ jiesparer.den rest, provided that they allow the total energy consumption of the compo ⁇ component over an expected based on the performed evaluation Shutdown period is reduced.
  • This ensures that a partial or essentially complete shutdown of the respective component takes place only if the total energy consumption of the component is actually reduced as a result. This means that it is preferable, for example, to take into account the energy which is required when the at least one part of the respective component is switched back on later.
  • such a consideration may, for example, lead to the respective component, on the basis of the component-specific configuration data and the at least one state variable, determining that the situation of the industrial plant would permit one or more parts of the relevant component without impairment to switch off the operation of the system for 2 minutes.
  • the component by comparing it with their energy consumption data stored in the configuration data, it is now possible for the component to recognize that the energy required for switching to the idle state and the reconnection exceeds the energy saved by the shutdown. This makes it possible for the component to dispense with a corresponding shutdown or to perform such switching off or switching to the idle state only when it is actually worthwhile in the overall consideration.
  • the respective component detects the at least one state variable of the system itself that is relevant for the operation of the respective component.
  • the component may for example have one or more corresponding sensors.
  • the inventive method is configured such that receive the at least one state variable through the component of another component of the system becomes.
  • the at least one state variable may be, for example, information such that one of the components in question has failed in a manufacturing or production process upstream of another component.
  • the relevant component Due to the component-specific configuration data stored in the respective component itself, the relevant component is now enabled to recognize that it relies on the further component for its operation and, due to its failure, without any further negative effects on the operation of the installation partially or completely switch to a standby or hibernate state.
  • the method according to the invention is configured in such a way that component-specific configuration data are taken into account, which configuration data and process control data relating to the system configuration comprise at least one automation process relating to the respective component.
  • the configuration data comprise the system component information relating to the particular component, ie, for example, with which other components the component in question must communicate, how long a communication connection used for this purpose may fail, or which components in a production process of the relevant respective component are downstream.
  • the process control data of the at least one automation process relating to the respective component may be, for example, indications of how many parts of the relevant component have to be delivered by another component of the application in a specific period of time in order for the component to work efficiently.
  • process control data may include information, for example act, whether an interruption of the operation of the component is permitted or under what circumstances this is the case.
  • process control data may also include information about the composition of a product or of a part as well as the respective duration of a process or processing step.
  • the inventive method is configured such that the configuration data are received by the respective component from a central data management device.
  • a central data management device receives configuration data from the respective component.
  • the configuration data are component-specific and are stored decentrally in the respective component, a central administration and modification of the configuration data is possible. For example, changes to the configuration data can be made on the central data management device and then transmitted to the respective component.
  • the inventive method is configured such that the respective component switches its at least one switched into the resting state part back to the operating state, if this is necessary according to an evaluation of at least one continuously detected state size taking into account the component-specific configuration data to avoid affecting the operation of the system.
  • This offers the advantage that the respective component can recognize itself, depending on the situation, when it is necessary to restore its at least one part which is switched to the idle state into the operating state, in order to avoid an accident of operation of the system.
  • the invention also relates to a component for an industrial plant.
  • the object of the present invention is to specify a component for an industrial-technical installation which, depending on the respective operating situation, makes it possible to switch at least part of the component into an energy-saving resting state.
  • a component for an industrial-technical system having a memory device for storing component-specific configuration data, a detection device for continuously detecting at least one state variable of the system relevant to the operation of the respective component, and a control device for evaluating the at least one taking into account the component-specific configuration data as to whether an at least partial shutdown of the component without impairing the operation of the system is possible, and, if so, for switching at least a part of the component from an operating state to an energy-saving idle state.
  • the component according to the invention is designed such that the control device is designed to switch the at least one part of the component into the energy-saving idle state, provided that the total energy consumption of the component is based on an expected shutdown period based on the evaluation performed by the control device is reduced.
  • the detection device is designed to receive the at least one state variable from another component of the system.
  • the component according to the invention can also be embodied such that the control device is designed such that component-specific configuration data are taken into account, which configuration data and process control data relating to the system configuration comprise at least one automation process relating to the respective component.
  • the component according to the invention can also be developed such that it is designed to receive the configuration data from a central data management device.
  • the component according to the invention is embodied in such a way that the control device is provided for switching back the at least one part switched into the idle state to the operating state, provided that this is at least one continuously acquired state variable taking into account the component-specific configuration data necessary to prevent the operation of the system from being impaired.
  • the invention also includes an industrial plant with at least one component according to the invention or one of the aforementioned preferred developments of the component according to the invention.
  • FIG. 1 in a schematic representation of an embodiment of the inventive component
  • Figure 2 is a schematic representation of a detail of an embodiment of the industrial plant according to the invention.
  • FIG. 1 shows a schematic representation of an exemplary embodiment of the component according to the invention. Shown is a component K of an industrial plant A.
  • the component K may be, for example, a motor or a production machine.
  • the component K has a memory device DB in which component-specific configuration data PD are stored.
  • the configuration data PD comprise configuration data relating to the system configuration as well as process control data of at least one automation process relating to the component K.
  • the component K has a detection device EE.
  • This serves to continuously detect at least one for the operation of the respective Component relevant state variable ZG of the industrial plant.
  • the detection device EE itself has one sensor or several sensors, by means of which the at least one state variable ZG of the system relevant to the operation of the component K is detected.
  • the detection device EE is designed to receive the at least one state variable ZG from another component K2 of the system.
  • the further component K2 may be both a sensor and another component of the system.
  • component K is functionally dependent on the further component K2.
  • the at least one state variable ZG could, for example, be the operating state of the further component K2.
  • a control device ST is connected to the memory device DB and the detection device EE. According to the illustration in FIG. 1, it is assumed that a bidirectional data exchange is possible between the control device ST and the memory device DB or the detection device EE. In this way, the control device ST is in particular enabled to read the configuration data PD from the memory device DB and to receive the at least one state variable ZG from the detection device EE. As a result, the control device ST is enabled to evaluate the at least one detected state variable ZG taking into account the component-specific configuration data PD. In this case, the evaluation takes place from the point of view of whether an at least partial shutdown of the component K is possible without Bern anime igur.g the Be ⁇ operation of the system. A corresponding decision is the control device ST of the component K thereby based on the static configuration data PD and the dynamic data in the form of at least one state-size ZG possible.
  • the at least one state-size ZG indicates that the further component K2 has stopped its operation or has failed.
  • the control device ST Taking account of the component-specific configuration data PD, it is thus recognizable to the control device ST that it can switch itself completely or partially from an existing operating state into an energy-saving idle state, since this does not or no longer adversely affects the operation of the industrial-technical system. If the control device ST at least partially switches the component K into the energy-saving idle state, then advantageously the continuous detection of the at least one state-size ZG by the detection device EE and a transmission of the corresponding information to the control device ST continue.
  • control device ST makes it possible for the control device ST to switch the at least one part of the component K switched back to the operating state as soon as it recognizes that this is necessary in order to avoid an impairment of the operation of the system. This may be the case, for example, if the at least one state-size ZG changes to indicate that the further component K2 has resumed its operation.
  • FIG. 2 shows a schematic representation of a detail of an exemplary embodiment of the industrial-technical plant according to the invention.
  • the darg p ⁇ i- ⁇ ⁇ FILLED to location comprises a component K, which can for example be executed according to the exemplary embodiment of FIG. 1
  • other components X, Y, Z of the system can be seen in FIG. 2 of the component K.
  • the plant is a production plant, wherein the components X and Y respectively produce parts T x and T ⁇ , respectively, which are supplied to the component K.
  • the component K assembles the parts T x and T y into parts T k and forwards them to the further processing component z.
  • the parts T x and T ⁇ are temporarily stored in front of the component K via buffers P x and P ⁇ in order to absorb fluctuations in the production of the parts T x and T ⁇ .
  • the produced from the component parts K T are ⁇ before the other component Z temporarily stored in a buffer P ⁇ .
  • Component-specific configuration data are stored in component K, on the basis of which component K is informed about the existence and size of buffers P x , P ⁇ and P ⁇ . This is therefore information about the plant configuration, ie about the structure of the industrial plant whose component K is the component.
  • the configuration data of the component K include the indication of how many parts T ⁇ of the component Z per minute are required.
  • component K records at least one state variable of the installation which is relevant for the relevant component K.
  • This may be, for example, the number of parts T x and T ⁇ produced at the respective time by the other components X and Y, and the current number of parts T x , T ⁇ or intermediately stored in the buffers P x , P y and P k T ⁇ act.
  • cc would also be conceivable, for example, for the number of parts required by the other component Z in a certain period of time not being statically predetermined in the configuration data. ben, but is also detected dynamically as a state variable of the plant.
  • the component K now recognizes, for example, the production of the part T x has slowed down on the basis of the detected state variables taking into account the component-specific configuration data, so that further production of the parts T k does not occur after the parts T x have been used up in the buffer P x more or no longer is possible in sufficient number, it is advantageously possible for component K itself to switch completely or partially into an energy-saving idle state.
  • the component is considered K while the ⁇ stored in the buffer P number of parts T ⁇ such is that ensures that these parts T ⁇ still in sufficient number for the further process, that is, the processing by the other component Z, available are, so that an impairment of the operation of the plant is avoided.
  • the component K is known on the basis of their component-specific configuration data, the time they use for a
  • the component K has a control device in which a corresponding control logic can be executed. This ensures that despite the temporary at least partial switching of the component K into the idle state, a bottleneck on the part of the other component Z is avoided.
  • the component K can advantageously make the decision as to when a restart of the previously switched-off parts is dependent not only on the number of parts T x in the buffer P x but also on when the component Z is how many Parts T ⁇ needed.
  • component K will advantageously switch to the energy-saving idle state only if, as a result, an energy saving is achieved, taking into account the required later switching back to the operating state.
  • the method according to the invention thus has the particular advantage that a component of an industrial plant, i. For example, a manufacturing plant, is even able to decide whether a switching of at least a portion of the component in an energy-saving idle state is appropriate or not.
  • a component of an industrial plant i. For example, a manufacturing plant
  • corresponding decisions can thus be made decentrally by the individual components of an industrial plant, advantageously unnecessary complexity in particular is avoided and allows a particularly efficient decision-making process, which ultimately the energy efficiency of industrial equipment can be improved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner une installation technique industrielle qui permet de mettre automatiquement des composants de l'installation dans un mode repos économiseur d'énergie en fonction de la situation de fonctionnement concernée. À cet effet, le procédé selon l'invention se déroule de telle manière que, pour au moins un composant (K) de l'installation, au moins une valeur d'état (ZG) de l'installation pertinente pour le fonctionnement du composant (K) en question soit continuellement enregistrée, cette valeur d'état (ZG) enregistrée est évaluée par le composant (K) en question en tenant compte de données de projection (PD) spécifiques au composant mémorisées dans le composant (K) en question pour savoir si un arrêt au moins partiel du composant (K) est possible sans nuire au fonctionnement de l'installation et, dans la mesure où c'est le cas, au moins une partie du composant (K) en question est amenée d'un mode fonctionnement dans un mode repos économiseur d'énergie par le composant (K) en question même. L'invention concerne également une installation technique industrielle ainsi qu'un composant pour une telle installation.
PCT/EP2008/008358 2008-09-26 2008-09-26 Procédé pour faire fonctionner une installation technique industrielle, installation technique industrielle et composant pour une telle installation WO2010034333A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08802756A EP2350752A1 (fr) 2008-09-26 2008-09-26 Procédé pour faire fonctionner une installation technique industrielle, installation technique industrielle et composant pour une telle installation
PCT/EP2008/008358 WO2010034333A1 (fr) 2008-09-26 2008-09-26 Procédé pour faire fonctionner une installation technique industrielle, installation technique industrielle et composant pour une telle installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/008358 WO2010034333A1 (fr) 2008-09-26 2008-09-26 Procédé pour faire fonctionner une installation technique industrielle, installation technique industrielle et composant pour une telle installation

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WO2010034333A1 true WO2010034333A1 (fr) 2010-04-01

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Cited By (8)

* Cited by examiner, † Cited by third party
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EP2309353A1 (fr) * 2009-10-05 2011-04-13 DMG Service Drehen GmbH Procédé et dispositif d'optimisation de la consommation d'énergie de machines-outils
WO2013044963A1 (fr) * 2011-09-29 2013-04-04 Siemens Aktiengesellschaft Procédé de détermination de paramètres relatifs à des composants et dispositif associé
WO2013044962A1 (fr) * 2011-09-29 2013-04-04 Siemens Aktiengesellschaft Outil permettant d'assister une commande orientée vers l'efficacité énergétique et procédé associé
WO2013131556A1 (fr) * 2012-03-06 2013-09-12 Siemens Aktiengesellschaft Procédé et dispositif de commande économisant l'énergie d'un équipement
CN104620185A (zh) * 2012-09-13 2015-05-13 欧姆龙株式会社 控制装置、控制系统、控制方法、程序及其记录介质
WO2016096334A1 (fr) * 2014-12-16 2016-06-23 Siemens Aktiengesellschaft Dispositif pour la commande coordonnée d'un état de fonctionnement d'une installation de production ainsi que système de production et procédé
WO2016206895A3 (fr) * 2015-06-26 2017-02-16 Zf Friedrichshafen Ag Procédé et dispositif pour réduire une consommation d'énergie d'une machine-outil et système de machines-outils
EP2630545B1 (fr) 2010-12-14 2018-07-18 Primetals Technologies Germany GmbH Procédé de réduction de la consommation en énergie d'une installation de laminage, dispositif de commande et/ou de régulation pour une installation de laminage, code de programme lisible par machine, support de mémoire et installation de laminage

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EP2309353A1 (fr) * 2009-10-05 2011-04-13 DMG Service Drehen GmbH Procédé et dispositif d'optimisation de la consommation d'énergie de machines-outils
EP2630545B1 (fr) 2010-12-14 2018-07-18 Primetals Technologies Germany GmbH Procédé de réduction de la consommation en énergie d'une installation de laminage, dispositif de commande et/ou de régulation pour une installation de laminage, code de programme lisible par machine, support de mémoire et installation de laminage
WO2013044963A1 (fr) * 2011-09-29 2013-04-04 Siemens Aktiengesellschaft Procédé de détermination de paramètres relatifs à des composants et dispositif associé
WO2013044962A1 (fr) * 2011-09-29 2013-04-04 Siemens Aktiengesellschaft Outil permettant d'assister une commande orientée vers l'efficacité énergétique et procédé associé
CN104160346A (zh) * 2012-03-06 2014-11-19 西门子公司 用于高能效地控制设备的方法和装置
CN104160346B (zh) * 2012-03-06 2017-03-29 西门子公司 用于节能地控制设备的方法和装置
WO2013131556A1 (fr) * 2012-03-06 2013-09-12 Siemens Aktiengesellschaft Procédé et dispositif de commande économisant l'énergie d'un équipement
US10281886B2 (en) 2012-03-06 2019-05-07 Siemens Aktiengesellschaft Method and device for the energy-efficient control of a plant
CN104620185A (zh) * 2012-09-13 2015-05-13 欧姆龙株式会社 控制装置、控制系统、控制方法、程序及其记录介质
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EP2897005A4 (fr) * 2012-09-13 2016-01-13 Omron Tateisi Electronics Co Dispositif de commande, système de commande, procédé de commande, programme et support d'enregistrement correspondant
WO2016096334A1 (fr) * 2014-12-16 2016-06-23 Siemens Aktiengesellschaft Dispositif pour la commande coordonnée d'un état de fonctionnement d'une installation de production ainsi que système de production et procédé
CN107003650A (zh) * 2014-12-16 2017-08-01 西门子公司 用于协调地控制生产设施的运行状态的设备以及生产系统和方法
CN107003650B (zh) * 2014-12-16 2019-10-25 西门子公司 用于协调地控制生产设施的运行状态的设备以及生产系统和方法
US10802454B2 (en) 2014-12-16 2020-10-13 Siemens Aktiengesellschaft Device for coordinated controlling of an operating state of a production plant and production system and method
WO2016206895A3 (fr) * 2015-06-26 2017-02-16 Zf Friedrichshafen Ag Procédé et dispositif pour réduire une consommation d'énergie d'une machine-outil et système de machines-outils

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