EP3445977A1 - Procédé d'alimentation en air comprimé d'un consommateur d'air comprimé, ensemble soupape et support de données doté d'un programme d'ordinateur - Google Patents

Procédé d'alimentation en air comprimé d'un consommateur d'air comprimé, ensemble soupape et support de données doté d'un programme d'ordinateur

Info

Publication number
EP3445977A1
EP3445977A1 EP17717658.3A EP17717658A EP3445977A1 EP 3445977 A1 EP3445977 A1 EP 3445977A1 EP 17717658 A EP17717658 A EP 17717658A EP 3445977 A1 EP3445977 A1 EP 3445977A1
Authority
EP
European Patent Office
Prior art keywords
fluid
valve
pressure
compressed air
mass flow
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.)
Pending
Application number
EP17717658.3A
Other languages
German (de)
English (en)
Inventor
Rüdiger Neumann
Matthias Doll
David Rager
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.)
Festo SE and Co KG
Original Assignee
Festo SE and Co KG
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 Festo SE and Co KG filed Critical Festo SE and Co KG
Publication of EP3445977A1 publication Critical patent/EP3445977A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/082—Servomotor systems incorporating electrically operated control means with different modes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/085—Servomotor systems incorporating electrically operated control means using a data bus, e.g. "CANBUS"
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure

Definitions

  • the invention relates to a method for supplying compressed air to a compressed air consumer, which has two fluidically separated, kinematically coupled working spaces, wherein each of the work spaces is assigned an independently controllable valve arrangement which between a blocking position, a first functional position for a fluidically communicating connection with a fluid source and a second Functional position for a fluidic communication with a fluid sink can be adjusted. Furthermore, the invention relates to a valve device for operating a compressed air consumer and a data carrier with a computer program for storage in a processing device of a valve device.
  • a method for compressed air supply of a compressed air consumer to determine a position of a movable component of the compressed air consumer, such as a working piston of a pneumatic cylinder, along a path of movement using a distance measuring system and provided by the Wegmesssystem
  • a processing of the position signal takes place, for example, to obtain from an absolute amount of the position signal and / or a temporal change of the position signal at least one information about a movement of the movable component of the compressed air consumer.
  • a valve arrangement associated with the processing device is subsequently activated in order to influence a fluid flow into a working space or from a working space of the compressed air consumer such that the movable component of the compressed air consumer reaches a predetermined position along the path of movement and / or at a predetermined speed along the path Movement can be moved.
  • the position signal of the displacement measuring system it is thus possible to control or regulate a valve position of the valve arrangement.
  • the change in the valve position as a function of the pressure conditions on the compressed air consumer and a compressed air source leads to different fluid flow rates to the compressed air consumer, which are detected by the processing device indirectly via the position signal of the position measuring system and lead to a renewed adjustment of the valve position.
  • the object of the invention is to provide a method for compressed air supply of a compressed air consumer, a valve device and a data carrier with a computer program for storage in a processing device of a valve device, which allows an improved provision of compressed air for a compressed air consumer.
  • each of the two valve assemblies individually as a function of a predetermined movement give up for the compressed air consumer and in, preferably exclusively, dependence on at least two pressure values from the group: supply pressure, first working space pressure, second working space pressure, outlet pressure, for providing a predeterminable course for a fluid mass flow or for providing a predeterminable course for one Fluid pressure in the respective working space or for providing a predetermined course of a valve cross-section is set.
  • a motion task can be, for example, moving a machine component coupled to the compressed air consumer along a, in particular rectilinear, movement path from a first functional position into a second functional position.
  • the motion task may have other constraints such as a maximum amount of time for the movement of the machine component
  • a coordination for the control of the two valve assemblies is required, which is performed for example by a processing device.
  • This coordination comprises the determination of at least two pressure values, which can be determined by means of pressure sensors on or in fluid lines, with which the valve arrangements are connected to the compressed air consumer or to a fluid source or a fluid sink. It is particularly preferably provided that the coordination of the control of the two valve arrangements is carried out exclusively on the basis of pressure values, so that elaborate metrological devices such as, for example, a displacement measuring system can be dispensed with.
  • Supply pressure is a pressure provided by a fluid source.
  • a working space pressure a pressure is referred to, which is present in a working space of the compressed air consumer.
  • the outlet pressure is a pressure which is present at a fluid outlet of a valve arrangement.
  • the processing device provided for carrying out the method serves for controlling the two valve arrangements and performs the control of the two valve arrangements in such a way that for at least one of the working spaces of the air consumer a course of a fluid mass flow or a fluid pressure can be specified or a valve cross-section of the valve assembly , which is assigned to the respective working space, can be adjusted.
  • fluid mass flows for the working spaces of a double-acting pneumatic cylinder designed to move a machine component can be set such that a moving speed of a piston rod of the pneumatic cylinder is within a predeterminable speed window and immediately before reaching a mechanically determined end position.
  • Position for the machine component and / or the piston rod is a deceleration of the piston rod.
  • the fluid mass flows for the working spaces of the compressed air consumer can be dimensioned such that the deceleration occurs as a result of energy-efficient operation of the compressed air consumer.
  • an energy supply to the compressed air consumer which takes place by providing compressed air, be dimensioned such that the supplied energy is exactly sufficient to move the compressed air consumer from a first functional position to a second functional position, without that at the end of the course of movement additional energy must be supplied to decelerate the compressed air consumer.
  • a size ratio between the two variable-sized working spaces is constant, can be brought about by providing fluid flows to the respective working spaces, which are also in a constant relationship to each other, a uniform movement of the pneumatic actuator.
  • a ventilation of a first working space with a predeterminable course for a first fluid pressure and a venting of a second working space with a predeterminable course for a second fluid mass flow or a predefinable course for a valve position of the second working space assigned Neten valve assembly takes place. Ventilation of the first working space with a predeterminable course for the first fluid pressure is of particular interest when the compressed air consumer, which is in particular a consumer
  • Can act pneumatic cylinder is oversized for the movement task to be performed. This can be the case, for example, if, for cost reasons and / or availability reasons, standard cylinders are used in a machine design, which optionally provide a larger lift and / or a greater maximum force than is required by the motion task.
  • a machine design which optionally provide a larger lift and / or a greater maximum force than is required by the motion task.
  • an energy-efficient operation of the compressed air consumer can be ensured despite a certain oversizing of the compressed air consumer.
  • an operating mode can also be spoken of a virtual supply pressure for the compressed air consumer, which is provided by means of those valve assembly which is assigned to this working space.
  • a fluid mass flow for the venting of the other working space a defined, in particular constant, moving speed for the actuator element of the compressed air consumer can be ensured.
  • it can be provided to influence a valve position for that valve arrangement which is connected to the working space to be relieved, in accordance with a predeterminable course, in order to limit a maximum speed for the actuator element in a simple manner.
  • a position of a movably received in an actuator housing actuator element is determined based on at least one fluid mass flow, which flows through one of the valve assemblies.
  • a position of the actuator element can be determined without a complex displacement measuring system, this applies, for example, in an embodiment of the compressed air consumer as
  • Pneumatic cylinder in which the actuator element can be formed by way of example by the working piston and the associated piston rod.
  • the position determined as a result can be used, for example, to influence a course of movement for the compressed air consumer, for example to ensure a smooth approach to a position.
  • the at least one fluid mass flow is determined with the following steps: determination of a first fluid pressure in a first section of a fluid channel of a valve arrangement which extends between an input connection for a fluidically communicating connection with a fluid source or fluid sink and a valve element a second fluid pressure in a second portion of the fluid passage of the valve assembly that extends between the valve member and an output port for fluidly communicating with a compressed air consumer, determining a flow value for the valve element from the two fluid pressures and a flow function, associating the flow value with a predeterminable fluid volume flow or fluid mass flow for the pressurized fluid, which is provided for the flow through the fluid channel, to a conductance and determination of a required Betchenistsene Rgie for an actuating device, which is designed for actuation of the valve element, and providing the actuating energy to the actuating device for setting the predeterminable fluid volume flow or fluid mass flow.
  • the objective of this method is thus to be able to set a fluid volume flow or fluid mass flow for the compressed air consumer to a predeterminable fluid volume flow on the basis of the determined pressure values and with knowledge of the fluid properties of the valve element used and thus directly influence a movement behavior of the compressed air consumer which is, for example, a pneumatic drive, in particular a pneumatic cylinder or pneumatic rotary actuator, to be able to take.
  • the fluid volume flow describes the flowing fluid volume per unit time.
  • the density of the fluid is additionally taken into account, whereby the calculation effort can be reduced.
  • the metrological effort for the control or regulation of the compressed air supply for the compressed air consumer can be kept low.
  • the valve element in response to a provision of energy, in particular electrical or fluid energy, to an actuator freely, in particular proportional to the amount of energy provided between a closed position with separate connection of the two fluid channel sections and an open position with free communicating connection of the two Fluid channel sections, can be moved.
  • a flow value is determined in a subsequent step on the basis of the fluid pressures and a flow function.
  • the flow function is, for example, a family of curves or a map in which the flow characteristics of the valve element for a fluid flowing through the valve element, depending on the pressure conditions before and after the valve element and in further dependence on a valve position of the valve element are deposited.
  • Flow value is then combined with a predeterminable fluid volume flow or fluid mass flow for the pressurized fluid to form a conductance.
  • This conductance is needed to determine an actuation energy for the actuator, which is designed for the actuation of the valve element.
  • the determined actuation energy is provided to the actuating device for setting the predeterminable fluid volume flow or fluid mass flow. It is preferably provided to cyclically repeat the method described above in more detail in order to allow, by way of example, regulation of at least one fluid volume flow or fluid mass flow for the compressed air consumer.
  • valve assembly is operated in the manner of a flow control valve, which can be dispensed with a complex and costly mass flow sensor in contrast to a flow control valve, since the entire determination of the fluid volume flow or fluid mass flow through the valve assembly is based on the pressure values from the pressure sensors be provided on or in the fluid channel.
  • the flow value is determined from the flow function, which is set in relation to a quotient of the first fluid pressure and the second fluid pressure and / or that the actuation energy is determined on the basis of the conductance and a, in particular experimentally determined, valve characteristic.
  • the pressure ratio across the valve element which can be determined as the quotient of the first fluid pressure and the second fluid pressure, is the quantity with which a precise assignment to flow properties of the valve element for a fluid through which the valve element flows, regardless of a level of the fluid pressure in the fluid channel, can be created.
  • the valve characteristic represents a relationship between a supply of energy, in particular electrical or fluidic energy, to the valve element and a resulting Functional position for the valve element ago. It is preferably provided to set the valve characteristic in relation to the determined conductance in order to be able to determine therefrom the energy required for achieving a desired functional position of the valve element for the actuating device.
  • the object of the invention is for a valve device of the type mentioned, which is designed for compressed air supply of a compressed air consumer having two fluidly isolated, kinematically coupled work spaces, each of the work spaces is assigned an independently controllable valve assembly, with the features of claim 8.
  • each of the valve arrangements comprises a fluid channel which is formed between an inlet connection for a fluidically communicating connection with a fluid source or fluid sink and an outlet connection for a fluidically communicating connection with a compressed air consumer, and a valve element which influences a cross section of the fluid channel is arranged movably in the fluid channel and to which an actuating device for changing a functional position is assigned, and a processing device for providing actuating energy to the actuating device, wherein a first pressure sensor is associated with a first section of the fluid channel between the input port and the valve element the second portion of the fluid channel between the valve element and the output port, a second pressure sensor is associated, wherein the processing means for performing a method n ach one of claims 1 to 7 is formed.
  • valve device it is provided that the respective second sections of the respective fluid Channels are connected to a common output terminal and that the input terminals are connected to different fluid sources or fluid sinks.
  • the processing device is connected to two pairs of two independently controllable valve arrangements, wherein the second portions of the respective fluid channels are respectively connected in pairs to a common output terminal and wherein a first input terminal of each pair with a Fluid source and a second input port of each pair is connected to a fluid sink, characterized in that the processing device is designed for a synchronous compressed air supply to the two working spaces with predeterminable fluid volume flow by selectively controlling the respective valve assemblies.
  • the valve arrangement is preferably designed as a proportional valve, in particular as a fluidically pilot-operated proportional valve.
  • the object of the invention is achieved by a data carrier with a computer program that is designed to be stored in a processing device of a valve device, wherein the computer program when processed in a processor of the processing device causes a method according to one of claims 1 to 5.
  • the data carrier may be a portable carrier medium, such as a CD, a DVD or a USB memory.
  • the data carrier can be designed as a drive or solid-state memory of a data server in which a plurality of different data are stored, to which a data server is stored Remote access can be accessed by the processing device, in particular on a data cloud / cloud.
  • Figure 1 is a schematic representation of a first embodiment of a fluidic system with a valve device and a compressed air consumer having two kinematically coupled to each other working spaces.
  • a fluidic system 1 shown in FIG. 1 is designed purely by way of example for providing a linear movement and for this purpose comprises a valve device 2 and a compressed air consumer 3.
  • the valve device 2 is designed as a pneumatic full bridge circuit with a total of four valve elements designed as 2/2-way proportional valves 4, 5, 6 and 7 realized, wherein each of the valve elements 4, 5, 6 and 7 purely by way of example as a solenoid valve with a magnetic drive 8, 9, 10 and 11 is formed as an actuating device.
  • the actuating device may also be designed as a piezo drive or magnetostrictive or otherwise suitable drive.
  • Each of the valve elements 4, 5, 6 and 7 can be switched with a suitable loading of the associated magnetic drives 8, 9, 10 and 11 with electrical energy between two functional positions, in particular a blocking position and an open position.
  • the magnetic drives 8, 9, 10 and 11 via control lines 15, 16, 17 and 18 are electrically connected to a processing device 19, the one Part of the valve device 2 forms and includes a microprocessor or microcontroller by way of example.
  • Each of the valve elements 4, 5, 6 and 7 is connected via fluid lines 20 to 27 associated with fluidic nodes 28 to 31 and forms with each paired fluid lines 20 to 27 each have a valve arrangement not designated in detail.
  • the fluid lines 20 to 23 are respectively designated as the first section of a fluid channel of the respective valve element 4, 5, 6 and 7.
  • the fluid lines 24 to 27, however, are referred to as second sections of a fluid channel of the respective valve element 4, 5, 6 and 7.
  • the fluid lines 20 and 21 open together at a fluidic node 28, the fluid lines 22 and 23 open together at the fluidic node 30, the fluid lines 24 and 25 open together at the fluidic node 29 and the fluid lines 26 and 27 open together at the fluidic node 31 from.
  • the fluidic node 28 is connected via a supply line 36 to a fluid source 32, while the fluidic node 30 is connected via an exhaust duct 37 with a fluid outlet, which is associated with a muffler 33.
  • the fluidic node 29 forms a first working port of the valve device 2 and is connected to a fluid port via a first connecting line 38
  • the supply line 36, the exhaust air line 37, the first connecting line 38 and the second connecting line 40 is connected to a fluid port 41 of the compressed air consumer 3.
  • at least one of the pressure sensors is arranged in a housing for the valve device or outside of such a housing.
  • the compressed air consumer 3 is designed purely by way of example as a double-acting pneumatic cylinder, in which a working piston 50, also referred to as a movable wall, is received linearly movable in a cylinder recess 51 of a cylinder housing 52 and thereby separates a first variable-size working space 53 from a second variable-volume working space 54.
  • the working piston 50 is connected to a piston rod 55, which passes through the cylinder housing 52 on the front side and can be displaced together with the working piston 50 along a rectilinear movement path 56 relative to the cylinder housing 52.
  • the working piston 50 is to be moved, starting from the position shown in FIG. 1, so that one end face of the working piston 50 is in contact with an opposing inner surface 58 of the working piston 50 Cylinder housing 52 is coming.
  • the predeterminable movement profile is embodied such that initially a uniform acceleration of the working piston 50 to a predefinable target speed, then a uniform movement of the working piston while maintaining the target speed and finally a deceleration of the working piston 50 to a vanishing speed.
  • valve element 4 and of the valve element 6 are provided by way of example, wherein a fluidically communicating connection between the fluid source 32, the fluidic node 29 and the second fluid port 39 is established via the valve element 4 and via the valve element 6 a fluidically communicating connection between the first fluid port 41, the fluidic node 31 and the fluid outlet with associated muffler 33 is made.
  • the processing device 19 first determines the sensor signals of the pressure sensors 42 to 45 in order to be able to calculate pressure ratios over the two valve elements 4 and 6. On the basis of these pressure ratios, in a subsequent step in the processing device 19 for each of the Venues tilelemente 4 and 6, a flow value for the respective valve element 4, 6 are determined from the two fluid pressures and a flow function. Subsequently, a linkage of the respective determined flow value with a predeterminable fluid volume flow or fluid mass flow, which is to be made available to the respective working space 53, 54, in order to achieve the desired movement of the working piston 50 according to the movement profile.
  • the result of this combination is referred to as conductance and is required to determine a required actuation energy for the respective magnetic drive 8, 10.
  • the actuation energy is determined for each of the magnetic drives 8, 10 by linking the conductance with a, in particular experimentally determined, valve characteristic. Subsequently, the actuation energy to the respective magnetic drives 8, 10 is provided and there leads to a movement of the respective unspecified valve spool of the respective valve elements 4, 6 and thus to a release of a fluidly communicating connection between the respective fluidic nodes 28 and 29 and 31 and 30.
  • a respective fluid volume flow or fluid mass flow is established between the fluid source 32 and the working space 54 and between the working space 53 and the muffler 33, which changes with a change in the pressures in the respective fluid lines 20 to 27 goes along.
  • the processing device 19 By cyclically recurring determination of the sensor signals of the pressure sensors 42 to 45 and the subsequent processing of the pressure ratios according to the above procedure, the processing device 19, the fluid volume flows for the two working chambers 53, 54 of the compressed air consumer 3 set so that the desired movement profile for the working piston 50 is maintained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

L'invention concerne un procédé d'alimentation en air comprimé d'un consommateur d'air comprimé (3) qui présente deux chambres de travail (53, 54) séparées fluidiquement et accouplées de manière cinématique, un ensemble soupape à commande indépendante étant associé à chacune des chambres de travail (53, 54) et pouvant être réglé entre une position de blocage, une première position fonctionnelle pour assurer une liaison en communication fluidique avec une source de fluide (32) et une seconde position fonctionnelle pour assurer une liaison en communication fluidique avec un puits de fluide (33) et chacun des deux ensembles soupape étant réglé individuellement en fonction d'un mouvement prédéfini à effectuer et, de préférence uniquement en fonction d'au moins deux valeurs de pression du groupe : pression d'alimentation, première pression de chambre de travail, seconde pression de chambre de travail, pression de sortie, pour fournir une allure prédéterminée pour un flux massique de fluide ou pour fournir une allure prédéterminée pour une pression de fluide dans chaque chambre de travail ou pour fournir une allure prédéterminée d'une section transversale de soupape.
EP17717658.3A 2016-04-21 2017-04-11 Procédé d'alimentation en air comprimé d'un consommateur d'air comprimé, ensemble soupape et support de données doté d'un programme d'ordinateur Pending EP3445977A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016206822.9A DE102016206822A1 (de) 2016-04-21 2016-04-21 Verfahren zur Druckluftversorgung eines Druckluftverbrauchers, Ventileinrichtung und Datenträger mit einem Computerprogramm
PCT/EP2017/058637 WO2017182325A1 (fr) 2016-04-21 2017-04-11 Procédé d'alimentation en air comprimé d'un consommateur d'air comprimé, ensemble soupape et support de données doté d'un programme d'ordinateur

Publications (1)

Publication Number Publication Date
EP3445977A1 true EP3445977A1 (fr) 2019-02-27

Family

ID=58548679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17717658.3A Pending EP3445977A1 (fr) 2016-04-21 2017-04-11 Procédé d'alimentation en air comprimé d'un consommateur d'air comprimé, ensemble soupape et support de données doté d'un programme d'ordinateur

Country Status (6)

Country Link
US (1) US10808738B2 (fr)
EP (1) EP3445977A1 (fr)
KR (1) KR102277346B1 (fr)
CN (1) CN109072951B (fr)
DE (1) DE102016206822A1 (fr)
WO (1) WO2017182325A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019202605B4 (de) * 2019-02-26 2023-11-23 Festo Se & Co. Kg Manipulator und Verfahren zum Betreiben eines Manipulators
DE102019204497B3 (de) * 2019-03-29 2020-09-03 Festo Se & Co. Kg System und Verfahren
DE102019211992B4 (de) * 2019-08-09 2023-09-28 Festo Se & Co. Kg Fluidisches System, Rückschlagventil und Verfahren zum Versetzen eines fluidischen Aktors in einen Sicherheitszustand
DE102019218485B4 (de) * 2019-11-28 2022-03-31 Festo Se & Co. Kg Arbeitseinrichtung
DE102020205446B4 (de) 2020-04-29 2022-02-10 Festo Se & Co. Kg Arbeitseinrichtung zur Durchführung eines Arbeitsvorgangs und Verfahren zum Betreiben einer Arbeitseinrichtung
DE102020206030B3 (de) 2020-05-13 2021-07-22 Festo Se & Co. Kg Ventilvorrichtung, System und Verfahren
DE102020213982B3 (de) * 2020-11-06 2022-02-03 Festo Se & Co. Kg Verfahren zur Inbetriebnahme einer pneumatischen Aktorvorrichtung, Inbetriebnahmesystem und pneumatisches Steuermodul

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7021191B2 (en) * 2003-01-24 2006-04-04 Viking Technologies, L.C. Accurate fluid operated cylinder positioning system
CN1742161A (zh) * 2003-01-24 2006-03-01 瓦伊金技术有限公司 精确流体操作的气缸定位系统
CA2513707C (fr) * 2003-01-24 2011-10-11 Viking Technologies, L.C. Systeme de positionnement de cylindre hydraulique precis
JP2005273911A (ja) * 2004-03-25 2005-10-06 Husco Internatl Inc 差動圧力補償流量係数を使用する油圧システム制御方法
US7269947B2 (en) * 2005-12-09 2007-09-18 Caterpillar Inc. Vibration control method and vibration control system for fluid pressure control circuit
US7380398B2 (en) * 2006-04-04 2008-06-03 Husco International, Inc. Hydraulic metering mode transitioning technique for a velocity based control system
DE102006058913A1 (de) * 2006-12-13 2008-06-19 Zf Friedrichshafen Ag Steuerungsvorrichtung für ein Getriebe
SE533131C2 (sv) * 2008-11-18 2010-07-06 Scania Cv Abp Pneumatiskt manöverdon, system och metod för reglering av detsamma
DE102009017879A1 (de) * 2009-04-17 2010-10-21 Festo Ag & Co. Kg Fluidtechnisches System
JP5197479B2 (ja) * 2009-05-08 2013-05-15 カヤバ工業株式会社 ハイブリッド建設機械
WO2010144993A1 (fr) * 2009-06-19 2010-12-23 Husky Injection Molding Systems Ltd. Commande cinématique dans un système hydraulique
WO2014081353A1 (fr) * 2012-11-20 2014-05-30 Volvo Construction Equipment Ab Ensemble de milieu sous pression
US9261118B2 (en) * 2014-01-15 2016-02-16 Caterpillar Inc. Boom cylinder dig flow regeneration
DE102014004877B3 (de) * 2014-04-04 2015-09-17 Festo Ag & Co. Kg Antriebssystem und Verfahren zum Betreiben eines Antriebssystems
US10697476B2 (en) * 2014-08-14 2020-06-30 Festo Se & Co. Kg Actuator controller and method for regulating the movement of an actuator
EP3371662B1 (fr) * 2015-11-03 2021-10-06 Festo SE & Co. KG Dispositif de commande d'ensembles de vannes pneumatiques en fonction de l'application
DE102016206821A1 (de) * 2016-04-21 2017-10-26 Festo Ag & Co. Kg Verfahren zum Betreiben einer Ventileinrichtung, Ventileinrichtung und Datenträger mit einem Computerprogramm

Also Published As

Publication number Publication date
CN109072951B (zh) 2021-07-06
DE102016206822A1 (de) 2017-10-26
US20190120264A1 (en) 2019-04-25
US10808738B2 (en) 2020-10-20
WO2017182325A1 (fr) 2017-10-26
KR20180129841A (ko) 2018-12-05
KR102277346B1 (ko) 2021-07-13
CN109072951A (zh) 2018-12-21

Similar Documents

Publication Publication Date Title
WO2017182325A1 (fr) Procédé d'alimentation en air comprimé d'un consommateur d'air comprimé, ensemble soupape et support de données doté d'un programme d'ordinateur
EP3445976A1 (fr) Procédé permettant de faire fonctionner un dispositif à soupapes, dispositif à soupapes et support de données comportant un programme informatique
DE102005056939B4 (de) Vorrichtung zur Erfassung eines Versagens
DE2658928C2 (fr)
EP2644904B1 (fr) Procédé de commande d'un système de travail à actionnement fluidique
DE3813172C2 (de) Blockiergeschützte hydraulische Bremsanlage
WO2016023569A1 (fr) Dispositif de commande d'actionneur et procédé de régulation du déplacement d'un actionneur
DE3347000C2 (fr)
DE4434960A1 (de) Hydraulische Bremsanlage und Verfahren zur Druckregelung
DE102009017879A1 (de) Fluidtechnisches System
EP1651485A1 (fr) Procede et dispositif pour produire et/ou ajuster un actionneur pouvant etre commande de maniere electromagnetique
EP4165332A2 (fr) Bloc de soupapes et procédé d'alimentation en substance de nettoyage et utilisation d'un bloc de soupapes
EP3368775B1 (fr) Dispositif de commande d'écoulement de fluide et procédé pour faire fonctionner un dispositif de commande d'écoulement de fluide
WO2021121475A1 (fr) Ensemble vanne et procédé de régulation de la pression d'un fluide
DE102013015105A1 (de) Druckluft-Wartungsgerät, damit ausgestattete Verbrauchersteuervorrichtung und zugehöriges Betriebsverfahren
DE102014004876B3 (de) Antriebssystem und Verfahren zum Betreiben eines Antriebssystems
DE102014004877B3 (de) Antriebssystem und Verfahren zum Betreiben eines Antriebssystems
DE102016200924A1 (de) Verfahren und Steuerungseinrichtung zum Bestimmen eines Verschleißzustands
DE102018219365A1 (de) Hydromaschine, Steuerungsanordnung, Hydraulisches System und Verfahren
EP2702460B1 (fr) Vanne pneumatique et son usage pour un consommateur connecté
DE102016201988B3 (de) Verfahren zum Ermitteln eines Funktionszustands eines Antriebssystems und Antriebssystem
DE102020213262A1 (de) Verfahren zum Betreiben eines hydraulischen Antriebs
DE102010018606A1 (de) Vorrichtung und Verfahren zum Sensieren von mehreren Drücken
DE102016206709B4 (de) Versorgungseinrichtung, Versorgungssystem und Verfahren zur individuellen Versorgung eines Druckluftverbrauchers
DE3741425C2 (fr)

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20181120

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FESTO SE & CO. KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20210526

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230623

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240315