EP2088329A2 - Commande de position pour actionneur pneumatique à double effet, actionneur pneumatique à double effet, et procédé de commande d'un tel actionneur. - Google Patents

Commande de position pour actionneur pneumatique à double effet, actionneur pneumatique à double effet, et procédé de commande d'un tel actionneur. Download PDF

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Publication number
EP2088329A2
EP2088329A2 EP08021841A EP08021841A EP2088329A2 EP 2088329 A2 EP2088329 A2 EP 2088329A2 EP 08021841 A EP08021841 A EP 08021841A EP 08021841 A EP08021841 A EP 08021841A EP 2088329 A2 EP2088329 A2 EP 2088329A2
Authority
EP
European Patent Office
Prior art keywords
pneumatic
positioner
pressure
actuator
working chamber
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.)
Withdrawn
Application number
EP08021841A
Other languages
German (de)
English (en)
Other versions
EP2088329A3 (fr
Inventor
Dirk Hoffmann
Thomas Dr. Karte
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.)
Samson AG
Original Assignee
Samson 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
Application filed by Samson AG filed Critical Samson AG
Publication of EP2088329A2 publication Critical patent/EP2088329A2/fr
Publication of EP2088329A3 publication Critical patent/EP2088329A3/fr
Withdrawn legal-status Critical Current

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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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • 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
    • F15B5/00—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities
    • F15B5/006—Transducers converting variations of physical quantities, e.g. expressed by variations in positions of members, into fluid-pressure variations or vice versa; Varying fluid pressure as a function of variations of a plurality of fluid pressures or variations of other quantities with electrical means, e.g. electropneumatic transducer
    • 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
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing valve
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5158—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and an output member
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/526—Pressure control characterised by the type of actuation electrically or electronically
    • 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
    • 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
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • 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
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6653—Pressure control
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting output members
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/76—Control of force or torque of the output member
    • 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/885—Control specific to the type of fluid, e.g. specific to magnetorheological fluid
    • F15B2211/8855—Compressible fluids, e.g. specific to pneumatics

Definitions

  • the invention relates to a positioner for a double-acting pneumatic actuator.
  • Double-acting pneumatic actuators are widely used in the process industry. Typical applications of double-acting pneumatic actuators are, for example, directed to control tasks in which valve flaps are to be actuated in pipelines.
  • a double-acting pneumatic drive can be formed, for example, by an actuating cylinder which is used in particular in power plant technology and can produce a defined differential pressure in an air duct by actuation of flaps.
  • Double-acting actuators have the general advantage of being particularly robust and durable, at the same time a structurally simple and cost-effective design is guaranteed.
  • the double-acting pneumatic actuator is position-controlled by a so-called electropneumatic positioner which converts electrical control signals into a pneumatic control signal which is supplied to the working chambers of the double-acting pneumatic actuator.
  • the pneumatic working chambers of the double-acting pneumatic actuator are acted upon in opposite directions and are driven accordingly in opposite directions.
  • a double-acting actuator has a movable working part, such as a piston guided in a cylinder or a membrane wall, which is then displaced when a pressure difference between the first and second pneumatic working chamber of the double-acting pneumatic actuator is established.
  • the positioner for operating the pneumatic, double-acting actuator outputs two pneumatic control signals and directs them to the respective working chamber.
  • a positioner with a supply pressure source of typically 6 bar is connected, wherein in the regulated state of the actuator, the average value of the pressure of both working chambers is usually 3 bar.
  • Known positioners for controlling a double-acting pneumatic actuator may be provided with a port for applying a supply pressure of about 6 bar and two outputs via which two pneumatic control signals are delivered to the working chambers of the double-acting actuator.
  • the pneumatic size of the control signal is set in opposite directions at both outputs, whereby a decrease of the first pneumatic control signal leads to an increase of the second pneumatic control signal.
  • the regulation of the actuator is realized by generating a pressure difference.
  • a positioner for a double-acting pneumatic actuator with a first and a second pneumatically actuated working chamber and a movable working part, such as a piston is provided.
  • the working part may be displaced at a difference of pressure in the first and second working chambers.
  • the positioner supplies a first and second pneumatic control signal to the first and second working chamber, respectively.
  • the positioner has at least one device for setting the first pneumatic control signal for the first working chamber, wherein the device is designed such that the setting of the first pneumatic control signal can regulate the second control signal is unaffected.
  • the adjustability of the first control signal is to be accompanied independently of the second pneumatic control signal, in particular independent of the pneumatic size of the second pneumatic control signal.
  • pressure ratios of, for example, 5.8 bar in the first working chamber and 5.4 bar in the second working chamber can be generated, wherein the generated differential pressure of 0.4 bar the desired displacement of the working part of the Actuator causes. Due to the high pressure of more than 5 bar, the actuator is given a higher rigidity.
  • the second pneumatic control signal is formed by a constant pressure of a pneumatic supply source, in particular in the amount of 6 bar.
  • the first pneumatic control signal can be modified accordingly to produce pressure differences in the range of 6 bar.
  • the device for adjusting the first pneumatic control signal having a control electronics connected to the flow pressure transducer and optionally have a pneumatic amplifier which is connected to the pneumatic supply source.
  • the constant supply pressure according to the second pneumatic control signal remains unchanged when setting the first pneumatic control signal by means of the current pressure transducer, for example at 6 bar.
  • the positioner comprises, in addition to a first device for setting the first pneumatic control signal for the first working chamber, a second device for setting the second pneumatic control signal for the second working chamber.
  • the first and second devices are operated independently of each other, i.e., independently of each other. the positioner generated by its two devices individually evoked pneumatic control signals that are to be supplied to the respective working chamber.
  • the first and second devices each have a current pressure transducer, such as a solenoid valve.
  • the current pressure transducer can receive electrical control signals from a particular common control electronics.
  • the control electronics for this purpose has two separate outputs for connection to the respective current and pressure transducer.
  • the control electronics emit the first and the second electrical control signal via the outputs.
  • each current pressure transducer downstream of a pneumatic amplifier which is connected via lines to the respective chamber of the pneumatic actuator.
  • a control electronics of the positioner is connected to a respective sensor for detecting the pressure of the first and second chambers.
  • the pressure sensors may be arranged in a connecting line from the positioner to the respective working chamber of the actuator. Alternatively, the pressure sensors may be located within the working chamber of the actuator.
  • a control electronics of the positioner is connected to a position sensor for detecting the position of an actuator to be provided by the actuator, such as a valve member.
  • the invention relates to a positioner arrangement for a double-acting pneumatic actuator with a first and a second pneumatically actuated working chamber and a movable working part which is accelerated for an actuating movement at a pressure difference in the first and second working chamber.
  • the first working chamber is assigned a first positioner and the second working chamber is assigned a second positioner, which is independent of the first positioner, in order to supply pneumatic control signals which are independent of each other to the working chambers.
  • the positioner arrangement has two positioners, which can be operated independently of one another and can supply corresponding, independently calculated pneumatic control signals to the respective working chamber.
  • the invention relates to a double-acting pneumatic actuator, in particular with an above-mentioned positioner according to the invention.
  • the double-acting pneumatic actuator has a first and a second pneumatic working chamber and a movable working part, such as a piston.
  • the working part may be displaced at a difference of pressure in a first and a second working chamber.
  • the positioner outputs the first or second pneumatic control signal to the first and the second working chamber.
  • the actuator is connected to a pneumatic supply source via the positioner.
  • a (theoretical) pressure average with respect to the pressures in the first and second working chamber can be determined. This is half the supply pressure in a conventional double acting pneumatic actuator the pneumatic supply source.
  • the at least one positioner will be designed to vary the mean pressure of the working chambers, in particular to increase beyond half the supply pressure of the pneumatic supply source.
  • the mean pressure of the working chambers is preferably adjustable, preferably between a minimum and an approximately full supply pressure, in particular between 3 and up to 5 and 6 bar.
  • the invention relates to a method for operating a particular invention, double-acting pneumatic actuator with a first and a second working chamber.
  • the working chambers are supplied with separate pneumatic control signals.
  • the mean pressure value between the pressures prevailing in the first and the second working chamber can be determined.
  • the pressure mean value of the working chambers is increased or decreased to increase or reduce the rigidity of the actuator.
  • the controlling controller determines which operating state it should assume. This can e.g. the state "high load stiffness - low dynamics" or the state “low load stiffness - high dynamics”.
  • the determination of the operating state can e.g. by observing the dynamics of the setpoint input. While a regulator according to known prior art thus only sets the output variable "pressure difference", the regulator proposed according to the invention additionally regulates the output variable "pressure level”.
  • the first and the second working chamber are subjected to the same pressure from the same supply source.
  • pressures in the chamber are increased beyond half the supply pressure of the pneumatic supply source.
  • the method according to the invention can optionally be implemented in a positioner. Then, in the case of a necessary high rigidity, the positioner can have a high pressure in the chambers, while for a good dynamic behavior it is advantageous to reduce the static pressure of the chambers, for example back to half the supply pressure, for example back to half supply pressure.
  • the two working chambers with approximately the full supply pressure of the pneumatic supply source, in particular up to 5 or 6 bar, applied when an increased load rigidity for the pneumatic, double-acting actuator is required.
  • the pneumatic actuator system 1 comprises a pneumatic, double-acting actuator 3, an electropneumatic positioner 5, which acts on the actuator 3 with pneumatic control signals s 1 and s 2 of about 1 to 6 bar.
  • the pneumatic actuator 3 provides a control valve. 7
  • the pneumatic actuator 3 has an actuating rod 9, the drive side opens into a piston 11, which divides an outer cylinder 13 of the pneumatic actuator 3 into two working chambers 15, 17.
  • the working chambers 15, 17 are acted upon by pressures p 1 , p 2 .
  • a displacement of the rod 9 is set.
  • the positioner 5 has an input 21 for connection to a pneumatic supply source 23, which provides a constant supply pressure P v of 6 bar.
  • the positioner 5 has an input for supplying desired data w to perform the control by means of a microprocessor 25.
  • the microprocessor 25 is connected to a position sensor 27 which accesses the latter for detecting the position of the control rod 9 and a position signal x to the Microprocessor 25 outputs.
  • the microcomputer 25 is also connected to a first pressure sensor 31 and a second pressure sensor 33, which is intended to determine the pressures prevailing in the working chambers 15, 17.
  • the pressure sensors 31, 33 are arranged in the respective connection line 35, 37, which connect the respective working chamber 15, 17 to a respective pneumatic amplifier 41, 43.
  • the pneumatic boosters 41, 43 which are responsible for generating the pressure for the respective pneumatic control signals s 1 , s 2 , are both connected to the pneumatic supply source 23. Both pneumatic amplifiers 41, 43 can be vented via appropriately controlled outputs 47.
  • the positioner according to the invention comprises two current pressure transducers 51, 53 to which an electrical control signal e 1 , e 2 is supplied from the microcomputer 25 via lines.
  • the current pressure converter 51, 53 Based on the electrical control signal e 1 , e 2 , the current pressure converter 51, 53 outputs a corresponding pneumatic pilot signal to the pneumatic amplifier 41, 43 from.
  • the positioner 5 can generate pneumatic control signals s 1 , s 2 , which are completely independent of each other.
  • individual pressures at specified pressure differences within the working chambers 15, 17 can be adjusted to adjust the stiffness or softness of the actuator 3.
  • the working chambers 15, 17 are supplied with approximately the complete supply pressure P v , so that prevail about 6 bar in both chambers.
  • the current pressure transducers 51, 53 can generate a pressure difference in the range of 6 bar within the working chambers 15, 17 by appropriate control.
  • FIG. 2a is such a case indicated in which approximately the supply pressure P v in working chambers 15, 17 prevails.
  • p 1 For both pressures p 1 , p 2 more than 50% of the supply pressure P v in the working chambers 15, 17 are passed.
  • a pressure difference to the maximum supply pressure (.DELTA.P V )
  • the pressure difference in the working chambers (.DELTA.P)
  • pressure difference for venting (.DELTA.P 0 )
  • the position control system is adapted to change the rigidity of the actuator by either the pressure average value P M is increased to increase the rigidity or lowered to reduce the rigidity.
  • FIG. 2b is the pneumatic actuator 3 is placed in an operating state in which he has a good dynamic behavior in which the static pressure in the chambers 15, 17 is set to half supply pressure P V again. Accordingly, the pressure difference .DELTA.P V have changed .DELTA.P 0 (the maximum of the supply pressure, to vent pressure), without that the pressure difference AP in the chambers 15, would have changed 17th
  • both operating states according to FIGS. 2a and 2b is the same adjustment of the piston 11 guarantee, once with a rigid actuator system according to FIG. 2a and once in a soft actuator system according to FIG. 1a.

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  • 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)
  • Servomotors (AREA)
EP08021841A 2008-02-06 2008-12-16 Commande de position pour actionneur pneumatique à double effet, actionneur pneumatique à double effet, et procédé de commande d'un tel actionneur. Withdrawn EP2088329A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008007651A DE102008007651B3 (de) 2008-02-06 2008-02-06 Stellungsregler für doppeltwirkenden, pneumatischen Stellantrieb, doppeltwirkender, pneumatischer Stellantrieb und Verfahren zum Betreiben des doppeltwirkenden, pneumatischen Stellantriebs

Publications (2)

Publication Number Publication Date
EP2088329A2 true EP2088329A2 (fr) 2009-08-12
EP2088329A3 EP2088329A3 (fr) 2012-12-05

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Application Number Title Priority Date Filing Date
EP08021841A Withdrawn EP2088329A3 (fr) 2008-02-06 2008-12-16 Commande de position pour actionneur pneumatique à double effet, actionneur pneumatique à double effet, et procédé de commande d'un tel actionneur.

Country Status (3)

Country Link
US (1) US20090199703A1 (fr)
EP (1) EP2088329A3 (fr)
DE (1) DE102008007651B3 (fr)

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WO2020178158A1 (fr) * 2019-03-04 2020-09-10 Festo Se & Co. Kg Système d'entraînement

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EP2644904B1 (fr) 2012-03-26 2014-11-12 Festo AG & Co. KG Procédé de commande d'un système de travail à actionnement fluidique
US9128008B2 (en) 2012-04-20 2015-09-08 Kent Tabor Actuator predictive system
DE102012021387B3 (de) * 2012-10-31 2014-02-13 Samson Ag Elektropneumatisches Feldgerät und elektropneumatische Baugruppe
DE102012021388B4 (de) 2012-10-31 2022-02-03 Samson Aktiengesellschaft Pneumatisches Antriebssystem und Verfahren zum Betreiben des pneumatischen Antriebssystems
DE102014211258A1 (de) * 2014-06-12 2015-12-17 Materialforschungs- und -prüfanstalt an der Bauhaus-Universität Weimar Vorrichtung zur Erzeugung definierter Druckverläufe
DE102014013098B3 (de) * 2014-09-03 2015-12-03 Samson Aktiengesellschaft Stellungsregler für ein pneumatisches Stellgerät
DE102014220743A1 (de) * 2014-10-14 2016-04-14 Siemens Aktiengesellschaft Pneumatischer Positionierantrieb, Verfahren zum Betrieb
US10234058B2 (en) * 2016-10-20 2019-03-19 Fisher Controls International Llc Methods and apparatus of assessing a test of a solenoid valve via a positioner
US10240687B2 (en) 2016-10-20 2019-03-26 Fisher Controls International Llc Methods and apparatus of testing a solenoid valve of an emergency valve via a positioner
DE202016106017U1 (de) * 2016-10-26 2018-01-28 Samson Aktiengesellschaft Elektropneumatischer Stellungsregler und Feldgerät mit einem elektropneumatischen Stellungsregler
US11274683B2 (en) * 2017-05-03 2022-03-15 Festo Se & Co. Kg Electropneumatic controller and process control device equipped therewith
GB2566109B (en) * 2017-09-05 2020-04-15 Bifold Fluidpower Ltd Valve actuator
US10458444B2 (en) * 2017-09-28 2019-10-29 Fisher Controls International Llc Optimized method for controlling position and crossover pressure in a double acting actuator
WO2019067291A1 (fr) * 2017-09-29 2019-04-04 Fisher Controls International Llc Procédé et appareil de commande d'un actionneur pneumatique a double effet
US10746314B2 (en) * 2018-09-14 2020-08-18 Fisher Controls International Llc Positioner apparatus for use with fluid valves
EP4083441A1 (fr) * 2021-04-30 2022-11-02 ABB Schweiz AG Entraînement de positionneur pour commander un positionneur de vanne à sortie pneumatique

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Publication number Priority date Publication date Assignee Title
WO2020178158A1 (fr) * 2019-03-04 2020-09-10 Festo Se & Co. Kg Système d'entraînement
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