EP2547909B1 - Dosing pump with control device of the piston stroke - Google Patents

Dosing pump with control device of the piston stroke Download PDF

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Publication number
EP2547909B1
EP2547909B1 EP11721379.3A EP11721379A EP2547909B1 EP 2547909 B1 EP2547909 B1 EP 2547909B1 EP 11721379 A EP11721379 A EP 11721379A EP 2547909 B1 EP2547909 B1 EP 2547909B1
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EP
European Patent Office
Prior art keywords
electromagnet
piston
stroke
pump
microcontroller
Prior art date
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Application number
EP11721379.3A
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German (de)
English (en)
French (fr)
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EP2547909A1 (en
Inventor
Roberto Proietti De Marchis
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ETATRON D S SpA
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ETATRON D S SpA
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Priority to PL11721379T priority Critical patent/PL2547909T3/pl
Publication of EP2547909A1 publication Critical patent/EP2547909A1/en
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Publication of EP2547909B1 publication Critical patent/EP2547909B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/04—Pumps having electric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity

Definitions

  • the present invention basically relates to the sector of electromechanical-actuation metering pumps for metering liquids.
  • Said metering pumps are used for metering additives of various sorts, by means of a regulation of a volumetric type of the fluid pumped at each cycle. They are devices that are widely used in numerous both industrial and domestic applications, such as for example:
  • metering occurs by means of a pulsating movement of a mechanical member present in the so-called pump body, referred to as "membrane", which, pushed by a piston, injects the liquid to be metered into the purposely provided delivery passage of the pump body.
  • the liquid to be metered is then introduced into the system to be treated, overcoming the counterpressure present in the piping in which it is injected.
  • the key element that must provide the force necessary in order for the liquid to be metered to be effectively mixed with the liquid to be treated is hence the piston, which constitutes the component designed to move the membrane that sucks in the liquid in the pump body from the intake pipe and injects it into the delivery pipe in a cyclic way.
  • Said piston is actuated by an electromagnet, which hence constitutes a fundamental part of the pump.
  • the electromagnet is made up of a fixed part, housed in which is the armature, and a mobile part - referred to as "plate” - fixed with respect to the piston.
  • the plate constitutes, in effect, the closing element for the magnetic flux of the electromagnet, said flux having as effect that of recalling said plate to the remaining fixed part of the electromagnet, thus producing a displacement.
  • the electromagnet hence enables conversion of electrical energy into mechanical energy to obtain work and move the liquid.
  • the electrical and mechanical characteristics of the metering pump hence depend upon how said electromagnet is designed, driven, and controlled.
  • the electronic card present in the pump will do nothing but supply the electromagnet and manage the electrical energy supplied thereto in the best way.
  • Certain applications in effect require the metering pump to deliver small amounts of liquid at each injection, hence requiring a high number of injections so as to be able to meter the volume required for carrying out the treatment.
  • Said target can be achieved by regulating the piston stroke causing that given the same injections, the volume of liquid can be properly metered via regulation of the aforesaid stroke.
  • the present invention thus falls within the field of closed-loop regulation systems, where the input variable, which in the case of the present invention is the current supplied to the electromagnet, is regulated by the system through a feedback based upon control of appropriate physical quantities that can be brought down to the variable to be controlled: the injection volume.
  • US 2009 0206184 is a system for injection into the combustion chamber regarding control of a fuel injector by using a sensor that detects the displacement of a mobile piston that slides in an accessory channel and, which is distinct from the needle valve.
  • the purpose of the system is to monitor and process the signal of displacement of the accessory piston in order to control operation of the injector in the case of any malfunctioning (blocking in ON or OFF position), in the cases of deterioration of the geometries of the nozzles, of the injector, or of the chamber, in the cases where it is necessary to modify the shape of the injection pulse.
  • the displacement of the piston is subordinate to the pressure difference existing between the two ends of the piston itself: the top one is subject to the supply pressure generated upstream of the injection system; the bottom one is subjected by the pressure in the "pre-injection" chamber, the volume of which depends upon the geometries involved.
  • the aforesaid pressure difference obviously depends upon the supply pressure, the supply frequency, and the state of the injector.
  • Three states of the injector may in fact be distinguished, namely, closed ("OFF"), intermediate (“blocking”), and open (“ON”), which determine, respectively, the following situations: OFF: the nozzles are closed by the needle, the pre-injection chamber is in communication with the supply, and the ends of the slidable piston are subject to one and the same pressure; blocking: the nozzles are still closed, and the supply ducts are geometrically closed, separating the pre-injection chamber from the supply; ON: the path to the nozzles is free, the pre-injection chamber does not communicate with the supply, and the mobile piston is displaced downwards following upon the negative pressure that is generated upon opening of the port of the nozzles.
  • the present invention presents a series of substantial differences as compared to what is described in the injection system of US 2009 0206184 where, irrespective of the type of injector or of control exerted, the supply pump is completely separate from the injector.
  • the pumping action and the injection action are carried out by means of one and the same device comprising a controlled-energization magnet, a piston, and a diaphragm. The latter presses the liquid into a duct, opening/closing of which is ensured by specific valves that operate exclusively for the fluid-dynamic effect.
  • the present invention instead, by measuring the variation of impedance that is generated in the electrical circuit itself of the magnet as the position of the pumping piston varies, it is possible to determine the position of the piston itself and, from this, to control the energy involved in order to guarantee the pre-set flowrate of fluid. In other words, it is possible to carry out control of the displacement of the device by means of a measurement of its electrical characteristics, without the need to resort to - indirect measurements of other mobile elements.
  • the position of the auxiliary piston in a certain configuration, can be corrected by means of an additional actuator.
  • the displacement datum detected by the sensor is in this case processed also for restoring the volume and pressure in the pre-injection chamber.
  • a metering pump which, in relation to the variation of inductance, generates a corresponding variation on the curve of the current and identifies, through the analysis carried out by the electronic circuit, the point of contact between the plate and the core of the electromagnet.
  • the device identifies the end-of-travel of the piston and can thus interrupt activation of the electromagnet, preventing a useless waste of energy and hence of heat that jeopardizes the performance of the product.
  • the present invention envisages a measurement of the current, which it uses for calculating the impedance, but, unlike what is indicated in WO 2007/007365 , is not limited to intercepting the point of arrival of the plate and hence the end-of-travel, but sets in relation the value of the inductance with the position assumed by the piston during its stroke and decides, on the basis of the settings entered by the user, in which position to block the piston stroke.
  • the present invention it is possible to control with centesimal precision the piston stroke and hence the capacity of the pump for each single injection of additive.
  • the document No. DE 20 2005 013089U regards an electronic-metering pump that carries out a control on the piston stroke in order to determine the necessary amount of energy thereof to cause the device to perform work properly. From an analysis of said document, it follows that it regulates the piston stroke through a mechanical system and, with the aid of an optical sensor, detects the stroke set by the user, and sends the datum to an electronic circuit that activates the electromagnet with a control signal, having an energy content commensurate with the work that is to be performed by the pump.
  • the present invention is not limited to controlling the current on the electromagnet in order to prevent useless waste of energy, leaving it to the mechanical system to control the piston stroke, but activates the solenoid with a precise amount of current, controls advance thereof through the calculation of the impedance, and decides blocking thereof in a well-defined position that can be set through calibration of the electronic circuit.
  • no mechanical control of the pump capacity is present, but everything is entrusted to an electronic system that activates the electromagnet, controls end-of-travel of the piston, and hence determines the pump capacity with centesimal precision.
  • WO 03/023226 describes an electromagnetic metering pump for infusion of medical substances in the human body, wherein the device is supplied by a battery and is not connected to the electrical mains supply: for this reason, the invention described in said document regards a system that guarantees a correct metering with the least use of electrical energy, to the advantage of lengthening the service life of the battery.
  • the present invention is based on the control of the stroke in order to modify instantaneously the injection volume of the pump.
  • the invention is not limited to determining whether the end-of-travel has been reached, but a control is made in real time on what happens in the magnet, the impedance is calculated, and the exact point at which the piston stroke is to cease is decided.
  • the solenoid performs not only the function of actuator but also that of sensor of the system.
  • the main purpose of the present invention is to overcome all the drawbacks listed above by providing a new, latest-generation, metering pump with low energy consumption and high performance.
  • the metering pump of the above sort is designed to replace the existing apparatuses by improving the current performance and reducing the levels of energy consumption to a minimum, at the same time guaranteeing an accurate metering based upon control of the piston stroke without the use of mechanical devices that are subject to wear, but through the measurement of physical quantities depending exclusively upon the geometry of the electromagnet.
  • the metering pump according to the invention is basically constituted by three fundamental elements: the electronic card, the electromagnet, and the pump body.
  • the core of the system is the electromagnet, which, appropriately governed by the electronic card and recalled by a spring, actuates a piston in a pulsed mode in a range preferably of between 0 and 360 pulses per minute.
  • the inventive idea underlying the present invention consists in actuating the magnet gradually with small voltage increments, whilst simultaneously said electronic system, measures the current that traverses the solenoid in order to obtain the corresponding value of impedance thereof, which is directly associated to the position of the piston along the maximum stroke envisaged.
  • a potentiometric or digital regulation which can be set directly by the operator via the interface of the electronic card, it is possible to select with centesimal precision, the exact point of arrest of the piston, i.e., its maximum stroke. Consequently, the pump that is described can vary with extreme precision the amount of additive injected for each single actuation of the electromagnet, without the aid of particular and costly mechanical regulations or of further sensors and electronic feedback.
  • said electromagnet is nothing but an inductor constituted by a winding housed on a ferromagnetic material, of a defined geometry, in which an air gap is present, which tends to close with displacement of the plate 2.
  • Said air gap is the distance (L1, L2, L3, L4) between the fixed part and the mobile part of the electromagnet, which coincides with the "stroke", whilst the mobile part (plate fixed with respect to the piston) displaces, causing variation of the value of inductance on account of a variation of the mechanical characteristics of the inductor itself and in particular of the variation of the physical parameter that in literature is defined as "magnetic reluctance".
  • the present invention is consequently based upon the possibility of relating a measurement of inductance of the electromagnet 1 - and hence of a physical parameter depending only and exclusively upon geometries of production and constructional parameters that are not subject to drift of any type - with a displacement of the piston 3.
  • the impedance of an electromagnet is characterized by a resistive factor typical of the copper that constitutes the winding, by an inductive factor that results from the number of turns, and by the geometry of the iron itself.
  • the resistance R remains practically constant but for minor variations as a function of the temperature which can in any case be corrected. Should it be desired to regulate the stroke with extreme precision, it would be sufficient to insert a temperature sensor in order to correct the value of resistance R of the electromagnet 1 and measure the impedance thereof more accurately.
  • the variation of the inductance L modifies the evolution of the current and is mathematically linked to the constructional geometries of the electromagnet 1 so that, by performing a simple sampling of the current for each electromagnet at constant voltage and measuring the impedance thereof just once and upon first turning-on, it is possible to characterize it, and the sampled values will repeat in all the operating conditions of the electromagnet, indicating, for the reasons mentioned above, the displacement of the piston 3 and of the plate 2 fixed with respect thereto.
  • the measurement of the impedance is not affected by the pressure of the system to which the apparatus is connected nor by the variations of said pressure in so far as the force applied to the electromagnet 1 does not depend upon the system counterpressure but rather upon the stroke that the piston that determines the amount of liquid injected has to perform.
  • Each electromagnet will hence be characterized by a table of its own in which the value of impedance will be correlated to the stroke and managed by the microcontroller.
  • the electromagnet 1 is connected to the electronic microcontroller card, which is designed to detect, in real time, the position of the piston 3 as a function of the variations of the values of the impedance of the electromagnet 1 and hence to regulate, according to the requirements, the stroke of said piston 3 and consequently the amount of liquid that is injected instantaneously by the pump.
  • the electronic microcontroller card which is designed to detect, in real time, the position of the piston 3 as a function of the variations of the values of the impedance of the electromagnet 1 and hence to regulate, according to the requirements, the stroke of said piston 3 and consequently the amount of liquid that is injected instantaneously by the pump.
  • the impedance of the electromagnet 1 varies, since corresponding to a variation of the stroke is a variation of the reluctance of the magnetic circuit of the electromagnet and hence of the inductance thereof. From this it may be inferred that, according to the invention, by controlling the impedance the stroke is controlled, as has been said above.
  • the electronic circuit supplies a first pulse, which causes the piston 3 to perform its entire stroke, and through measurements of current and voltage in the electromagnet 1, performed at intervals of one millisecond, stores in its own internal memory the values of the corresponding inductance, together with the actual value of stroke of the piston.
  • the inductance is a quantity that varies only as some quantities of a physical and mechanical nature that can determine minor variations of the stroke vary, it is evident that the pump could require further calibrations to be carried out during the life cycle of the pump itself.
  • the microcontroller will then receive as external input the desired position of the piston stroke, associated to a precise capacity of the metering pump, and will govern the power circuit connected to the electromagnet in such a way as to apply a pulse train able to generate the intermittent electromagnetic field that attracts and releases the plate 2, which, being fixed with respect to the piston 3, which is in turn fixed to the diaphragm 4, displaces the latter inside the pump body 5, and consequently the liquid agent is pumped in the aqueous solution.
  • the impedance of the electromagnet will vary point-by-point and hence via its detection the stroke performed is determined; this will provide the microcontroller of the device with the possibility of identifying the point of arrest of the piston itself.
  • the electronic circuit will manage the current as a function of said request within the admissible levels of ambient temperature envisaged for proper operation of metering pumps.
  • the metering pump equipped with said control may likewise be connected via serial port to a remote computer for enabling intervention on operation of the pump itself.
  • a first advantage in the use of the device described so far is represented by the possibility of regulating the piston stroke 3 as a function of the work that the metering pump must effectively perform, and hence of the amount of liquid that it must inject. This entails not only a saving in terms of energy, which is limited to the levels effectively necessary for said work, but also a saving in economic terms for the user, due to the fact that a precise metering that is constant over time prevents a useless waste of additive.
  • a second advantage consists in the possibility of knowing, with a precision in the order of hundredths of millimetre, the position of the piston 3 during its stroke via the electronic control card.
  • a third advantage is represented by the fact that it is possible to configure the piston stroke 3 during programming of the microcontroller. This consequently entails a further dual advantage: elimination of mechanical calibration means necessary for proper definition of the piston stroke and economic saving due to said elimination. With the same configuration of the product there is the possibility of producing metering pumps with different technical characteristics.
  • a further advantage of the invention is that the metering pump comprising the electromagnet so far described works at temperatures lower than those at which a traditional metering pump works, thus preventing an excessive heating, due to the fact that the limitation of the piston stroke does not occur with mechanical means without decreasing the energy yielded to the electromagnet, but only limiting said energy.
  • the microcontroller through control - in real time - of the variation of the inductance, detects said situation and, on the basis of the settings entered in programming step, signals the state of alarm immediately or following upon a given number of pulses.
  • the system can envisage a procedure of re-priming that will start supply of a given number of injections, for a definite and programmed period of time.
  • the OVERLOAD function enables the microcontroller of the electronic device to detect lack of metering irrespective of the presence of appropriate external devices of a known type (flow sensor): an obstruction of the delivery line of the pump, whether partial or total, slows down the rate of displacement of the piston, said slowing-down being a function of the degree of the obstruction; the electronic circuit of the pump acquires said data and, once a given period of time has elapsed, sets itself in a condition of alarm, indicating the state of OVERLOAD.
  • a known type flow sensor
  • the present invention bases control of the position of the piston 3 on the measurement of the inductance of the electromagnet 1; in this way, the end-of-travel switch and the capacitive sensor are eliminated.
  • the electromagnet 1 in addition to performing the function of actuator of the pump, also functions as inductive sensor through which the position of the piston 3 and hence the capacity of the pump is detected and managed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP11721379.3A 2010-03-17 2011-03-16 Dosing pump with control device of the piston stroke Active EP2547909B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11721379T PL2547909T3 (pl) 2010-03-17 2011-03-16 Pompa dozująca z urządzeniem sterującym skokiem tłoka

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM2010A000119A IT1398982B1 (it) 2010-03-17 2010-03-17 Dispositivo di controllo della corsa del pistone di una pompa dosatrice per la regolazione automatica della portata ad alto rendimento.
PCT/IT2011/000074 WO2011114365A1 (en) 2010-03-17 2011-03-16 Dosing pump with control device of the piston stroke

Publications (2)

Publication Number Publication Date
EP2547909A1 EP2547909A1 (en) 2013-01-23
EP2547909B1 true EP2547909B1 (en) 2016-01-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11721379.3A Active EP2547909B1 (en) 2010-03-17 2011-03-16 Dosing pump with control device of the piston stroke

Country Status (13)

Country Link
US (1) US20120321485A1 (it)
EP (1) EP2547909B1 (it)
JP (1) JP5984304B2 (it)
CN (1) CN102803726B (it)
BR (1) BR112012021837A2 (it)
DK (1) DK2547909T3 (it)
EA (1) EA024119B1 (it)
ES (1) ES2567407T3 (it)
IL (2) IL221644A (it)
IT (1) IT1398982B1 (it)
PL (1) PL2547909T3 (it)
UA (1) UA111469C2 (it)
WO (1) WO2011114365A1 (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2012013396A (es) * 2010-05-18 2013-06-28 Electrolux Ab Dispositivo de dosificacion alimentadfo por bateria.
CN102410194B (zh) * 2011-10-19 2015-01-07 宁波合力机泵有限公司 一种柱塞往复泵的流量调节装置
FR3013073B1 (fr) * 2013-11-08 2016-01-15 Continental Automotive France Procede permettant de determiner si un injecteur est dans un etat bloque
CA2974835A1 (en) 2015-02-05 2016-08-11 Carlisle Fluid Technologies, Inc. Spray tool system
US10324428B2 (en) 2015-02-12 2019-06-18 Carlisle Fluid Technologies, Inc. Intra-shop connectivity system
US11273462B2 (en) 2015-11-26 2022-03-15 Carlisle Fluid Technologies, Inc. Sprayer system
US10584694B2 (en) * 2016-02-09 2020-03-10 Oridion Medical 1987 Ltd. Miniature diaphragm pump with enlarged operation time
EP3663578B1 (en) * 2018-12-06 2021-10-06 Riprup Company S.A. Micrometering pump
KR20200105144A (ko) * 2019-02-28 2020-09-07 한온시스템 주식회사 압축기
IT202000017830A1 (it) * 2020-07-23 2022-01-23 Giorgio Antonio De Sistema per la misurazione del flusso di un liquido
IL277286B (en) * 2020-09-10 2022-09-01 Tefen Flow & Dosing Tech Dosing pump
CN112109937A (zh) * 2020-09-17 2020-12-22 陈秀爱 一种玻璃胶灌装机用的计量报警增补装置
CN114682318A (zh) * 2020-12-31 2022-07-01 苏州赛尼特格尔实验室科技有限公司 一种机械移液器
US20220265993A1 (en) * 2021-02-23 2022-08-25 Ventriflo, Inc. Pulsatile Fluid Pump System
CN117212136B (zh) * 2023-10-12 2024-06-25 成都同流科技有限公司 一种流量精准可调的旋转式柱塞泵及流量精准控制方法

Family Cites Families (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926615A (en) * 1954-01-28 1960-03-01 Acf Ind Inc Electro-dynamic fuel pump
US3381623A (en) * 1966-04-26 1968-05-07 Harold F Elliott Electromagnetic reciprocating fluid pump
JPS5124121B2 (it) * 1972-02-19 1976-07-22
JPS6131678A (ja) * 1984-07-25 1986-02-14 Hitachi Ltd ストロ−ク可変定量ポンプ
JPS6313307A (ja) * 1986-07-04 1988-01-20 Komatsu Ltd ソノレイドのストロ−ク制御方法
DE3875075D1 (de) * 1987-11-25 1992-11-05 Siemens Ag Dosiergeraet zum gesteuerten injizieren von fluessigkeiten aus einem vorratsbehaelter in einen organismus.
US5481187A (en) * 1991-11-29 1996-01-02 Caterpillar Inc. Method and apparatus for determining the position of an armature in an electromagnetic actuator
EP0569618B1 (de) * 1992-05-12 1997-01-02 Siemens-Elema AB Dosiergerät zur gesteuerten Abgabe einer Flüssigkeit
US5284425A (en) * 1992-11-18 1994-02-08 The Lee Company Fluid metering pump
US5342176A (en) * 1993-04-05 1994-08-30 Sunpower, Inc. Method and apparatus for measuring piston position in a free piston compressor
GB9409989D0 (en) * 1994-05-18 1994-07-06 Huntleigh Technology Plc Magnetic actuator
US6942469B2 (en) * 1997-06-26 2005-09-13 Crystal Investments, Inc. Solenoid cassette pump with servo controlled volume detection
DE19955270A1 (de) * 1999-11-17 2001-05-23 Roemheld A Gmbh & Co Kg System zur Überwachung von Hydraulikzylindern
DE10007206A1 (de) * 2000-01-12 2001-07-19 Bosch Gmbh Robert Zylinderschalter mit Datenübertragung über ein Hochfrequenzfeld
US6948697B2 (en) * 2000-02-29 2005-09-27 Arichell Technologies, Inc. Apparatus and method for controlling fluid flow
SE0002796L (sv) * 2000-07-28 2001-09-24 Swedish Control Systems Ab Metod för drivning och positionsmätning av en aktuator
US6595756B2 (en) * 2001-09-07 2003-07-22 Medtronic Minimed, Inc. Electronic control system and process for electromagnetic pump
US20030161735A1 (en) * 2002-02-28 2003-08-28 Samsung Electronics Co., Ltd. Apparatus and method of controlling linear compressor
DE10249919A1 (de) * 2002-10-26 2004-05-13 Festo Ag & Co. Spulenanordnung als Magnetfeldsensor
SE0203429D0 (sv) * 2002-11-20 2002-11-20 Siemens Elema Ab Elektrodynamisk aktuator
US6895798B2 (en) * 2003-04-16 2005-05-24 Eaton Corporation Method of calibrating a solenoid operated pressure control valve and method of controlling same
BRPI0400108B1 (pt) * 2004-01-22 2017-03-28 Empresa Brasileira De Compressores S A - Embraco compressor linear e método de controle de um compressor linear
JP4443280B2 (ja) * 2004-03-30 2010-03-31 カヤバ工業株式会社 ソレノイドのプランジャ位置検出装置および電磁弁および方向切換弁
JP2006093410A (ja) * 2004-09-24 2006-04-06 Usami Koji ソレノイド駆動装置
ITRM20050373A1 (it) * 2005-07-13 2007-01-14 Seko Bono Exacta S P A Dispositivo di pilotaggio di un elettromagnete di azionamento di una pompa, e relativa pompa elettromagnetica dosatrice.
US7511478B2 (en) * 2005-08-03 2009-03-31 Honeywell International Inc. Sensorless position measurement method for solenoid-based actuation devices using inductance variation
DE202005013089U1 (de) * 2005-08-19 2007-01-04 Prominent Dosiertechnik Gmbh Magnetdosierpumpe
DE102005039772A1 (de) * 2005-08-22 2007-03-08 Prominent Dosiertechnik Gmbh Magnetdosierpumpe
KR100652608B1 (ko) * 2005-10-31 2006-12-04 엘지전자 주식회사 왕복동식 압축기의 구동 제어 장치 및 그 방법
US7483253B2 (en) * 2006-05-30 2009-01-27 Caterpillar Inc. Systems and methods for detecting solenoid armature movement
US7372255B2 (en) * 2006-09-13 2008-05-13 Sunpower, Inc. Detection of the instantaneous position of a linearly reciprocating member using high frequency injection
US8007247B2 (en) * 2007-05-22 2011-08-30 Medtronic, Inc. End of stroke detection for electromagnetic pump
US7896257B2 (en) * 2008-02-16 2011-03-01 Mi Yan Fuel injector with real-time feedback control

Also Published As

Publication number Publication date
JP5984304B2 (ja) 2016-09-06
WO2011114365A1 (en) 2011-09-22
CN102803726A (zh) 2012-11-28
PL2547909T3 (pl) 2016-07-29
ES2567407T3 (es) 2016-04-22
EA024119B1 (ru) 2016-08-31
US20120321485A1 (en) 2012-12-20
BR112012021837A2 (pt) 2016-05-17
EA201290916A1 (ru) 2013-06-28
IL221644A (en) 2015-05-31
JP2013522531A (ja) 2013-06-13
IL221644A0 (en) 2012-12-02
ITRM20100119A1 (it) 2011-09-18
DK2547909T3 (en) 2016-04-11
EP2547909A1 (en) 2013-01-23
WO2011114365A8 (en) 2011-12-08
IL239085A0 (en) 2015-07-30
IL239085A (en) 2016-06-30
IT1398982B1 (it) 2013-03-28
CN102803726B (zh) 2016-04-20
UA111469C2 (uk) 2016-05-10

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