EP1109178A2 - Method for switching an inductive load - Google Patents
Method for switching an inductive load Download PDFInfo
- Publication number
- EP1109178A2 EP1109178A2 EP00127553A EP00127553A EP1109178A2 EP 1109178 A2 EP1109178 A2 EP 1109178A2 EP 00127553 A EP00127553 A EP 00127553A EP 00127553 A EP00127553 A EP 00127553A EP 1109178 A2 EP1109178 A2 EP 1109178A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- switching
- load
- controllable switch
- time interval
- 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- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1844—Monitoring or fail-safe circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H2047/008—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current with a drop in current upon closure of armature or change of inductance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/04—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
- H01H2047/046—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current with measuring of the magnetic field, e.g. of the magnetic flux, for the control of coil current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
- H01H47/325—Energising current supplied by semiconductor device by switching regulator
Definitions
- the invention relates to a method for switching an inductive Load, especially an inductive load with movable Share which a switching voltage can be supplied.
- the invention relates to a circuit arrangement to carry out the procedure.
- this load is usually supplied with a constant switching voltage, that occur during a time interval between a and there is a switch-off time at the load.
- the present invention is therefore based on the object to specify a method of the type mentioned at the outset which Shortened switching time for switching the inductive load enables.
- a circuit arrangement must be specified which is suitable for carrying out the method.
- An embodiment of the invention according to that specified in claim 2 Measures result in a lower energy requirement with switched inductive load and accelerates switch-off processes.
- the invention is particularly in digital output units for programmable logic controllers can be used.
- Essential components of the circuit arrangement according to FIG. 1 are a sensor unit 1, which is provided for the detection of the change in a load current 11, a controllable switch 3 in the form of a MOSFET switch and a voltage generation unit 4.
- a DC supply voltage 5 can be supplied to the voltage generation unit 4 , from which the voltage generating unit 4 generates 6 switching voltages depending on a control signal 6 generated by the sensor unit 1 and supplied to the voltage generating unit 4.
- two switching voltages are provided, a maximum voltage of 48 VDC and a holding voltage of 16 VDC, which are generated from a supply voltage of 24 VDC.
- a control signal 9 can be fed to the controllable switch 3 via a control output 7 of a programmable logic controller and via potential-separating means 8, an activated control signal 9 closing the switch 3. This has the effect that a switching voltage 10 is supplied to the load 2 and the load current 11 flows through the load 2 via a ground connection M. Further components of the circuit arrangement such as storage choke 12, quenching element 13 and overvoltage protection device 14 are of no significance for the invention and therefore do not need to be explained in more detail.
- FIG. 2 in which current and voltage curves are shown.
- the load 2 (FIG. 1) is supplied with an abrupt maximum voltage Um, which, for. B. corresponds to twice the nominal load voltage Un.
- This maximum voltage Um causes a rapid increase in a load current I.
- the sensor unit 1 detects a current shoulder Ss in the load current profile, which, for. B. caused by the movement of an anchor and the resulting change in flow.
- the sensor unit 1 then activates the control signal 6, as a result of which the voltage generating unit 4 at the time T1 suddenly reduces the switching voltage from the maximum voltage Um to a holding voltage Uh, which in a practical exemplary embodiment of the invention is two thirds of the nominal load voltage Un.
- the inductive load 2 Due to the increased switching voltage Um between times T0 and T1 and the reduced switching voltage Uh from time T1, on the one hand, the inductive load 2 is switched quickly and, on the other hand, the energy requirement during switched load 2 is reduced, with a holding current from time T2 in the steady state Ih flows through the load 2.
- the time interval is selected in accordance with the technical specifications in the data sheets of the inductive load to be switched so that it is ensured that the current shoulder Ss occurs within this predetermined time interval.
- the circuit arrangement according to FIG. 1 is to be modified such that a time interval monitoring unit is to be provided instead of the sensor unit 1.
- FIG. 3a shows one Switching voltage in the form of a DC voltage
- the Maximum voltage Um twice the nominal load voltage Un and the holding voltage Uh two thirds of this nominal load voltage Un is.
- Such a DC voltage with variable amplitude generates the voltage generating unit 4 ( Figure 1) that the switching voltage varies depending on the control signal 6.
- Figure 3b shows a clocked version, with one Time T3 is the DC component of the withstand voltage of two Third of the nominal load voltage with an alternating voltage corresponding amplitude and clock rate is achieved.
- Such a pulsating DC voltage with constant amplitude and variable pulse-pause ratio can advantageously be used as a switching voltage in a circuit arrangement shown in FIG. 4 for switching a plurality of inductive loads with movable parts.
- the control of only one output channel is shown in FIG.
- the same parts in Figures 4 and 1 are provided with the same reference numerals.
- a voltage generating unit 4 ' connects the maximum voltage Um (FIG. 3b) to the inductive load 2 via the controllable switch 3 and a sensor unit 1'.
- the sensor unit 1 In the event that the sensor unit 1 'detects a current shoulder and / or a predeterminable time interval has expired, the sensor unit 1' switches an AND logic element 14 to a pulse-pause signal 15, as a result of which the controllable switch 3 switches the maximum voltage Um in accordance with the Pulse-pause ratio (duty cycle) switches this pulse-pause signal on or off.
- This switching on or off of the maximum voltage Um in accordance with the duty cycle that can be predetermined by the sensor unit generates a constant component from time T3 (FIG. 3b), which corresponds to the holding voltage Uh (FIG. 3a).
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
- Control Of Electrical Variables (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Schalten einer induktiven Last, insbesondere einer induktiven Last mit bewegbaren Teilen, welcher eine Schaltspannung zuführbar ist. Darüber hinaus betrifft die Erfindung eine Schaltungsanordnung zur Durchführung des Verfahrens.The invention relates to a method for switching an inductive Load, especially an inductive load with movable Share which a switching voltage can be supplied. In addition, the invention relates to a circuit arrangement to carry out the procedure.
Zum Schalten einer induktiven Last mit bewegbaren Teilen wird dieser Last gewöhnlich eine konstante Schaltspannung zugeführt, die während eines Zeitintervalls zwischen einem Einschalt- und einem Ausschaltzeitpunkt an der Last anliegt.For switching an inductive load with moving parts this load is usually supplied with a constant switching voltage, that occur during a time interval between a and there is a switch-off time at the load.
Um möglichst schnell auf ein Ereignis in einem zu steuernden technischen Prozess zu reagieren, sind Maßnahmen zum schnellen Schalten einer derartigen Last erforderlich.To be controlled as quickly as possible on an event in one Responding to the technical process are quick measures Switching of such a load is required.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art anzugeben, das eine verkürzte Schaltzeit zum Schalten der induktiven Last ermöglicht. Darüber hinaus ist eine Schaltungsanordnung anzugeben, welche zur Durchführung des Verfahrens geeignet ist.The present invention is therefore based on the object to specify a method of the type mentioned at the outset which Shortened switching time for switching the inductive load enables. In addition, a circuit arrangement must be specified which is suitable for carrying out the method.
Vorteilhaft ist, dass insbesondere induktive Lasten mit bewegbaren Teilen wesentlich schneller geschaltet werden können. In einem praktischen Ausführungsbeispiel der Erfindung wird die Schaltzeit eines Aktors im Vergleich zu an sich bekannten Schaltverfahren um ca. 50 % verkürzt.It is advantageous that in particular inductive loads with movable Parts can be switched much faster. In a practical embodiment of the invention is the switching time of an actuator compared to itself known switching method shortened by about 50%.
Eine Ausgestaltung der Erfindung gemäß den im Anspruch 2 angegebenen
Maßnahmen bewirkt einen geringeren Energiebedarf
bei geschalteter induktiver Last und beschleunigt Abschaltvorgänge. An embodiment of the invention according to that specified in
Die Erfindung ist insbesondere in Digitalausgabeeinheiten für speicherprogrammierbare Steuerungen einsetzbar.The invention is particularly in digital output units for programmable logic controllers can be used.
Anhand der Zeichnung, in der ein Ausführungsbeispiel der Erfindung veranschaulicht ist, werden im Folgenden die Erfindung, deren Ausgestaltungen sowie Vorteile näher erläutert.Using the drawing, in which an embodiment of the invention is illustrated below, the invention, their designs and advantages explained in more detail.
Es zeigen
Figur 1- eine Schaltungsanordnung zum Schalten einer induktiven Last mit bewegbaren Teilen,
Figur 2- eine Darstellung von Strom- und Spannungsverläufen,
Figur 3- eine Darstellung von Schaltspannungen und
Figur 4- eine Schaltungsanordnung zum Schalten mehrerer induktiver Lasten.
- Figure 1
- a circuit arrangement for switching an inductive load with movable parts,
- Figure 2
- a representation of current and voltage profiles,
- Figure 3
- a representation of switching voltages and
- Figure 4
- a circuit arrangement for switching several inductive loads.
Wesentliche Bestandteile der Schaltungsanordnung nach Figur 1
sind eine Sensoreinheit 1, die zur Erkennung der Änderung eines
Laststromes 11 vorgesehen ist, ein steuerbarer Schalter 3
in Form eines MOSFET-Schalters und eine Spannungserzeugungs-Einheit
4. Der Spannungserzeugungs-Einheit 4 ist eine Versorgungsgleichspannung
5 zuführbar, aus welcher die Spannungserzeugungs-Einheit
4 in Abhängigkeit eines von der
Sensoreinheit 1 erzeugten und der Spannungserzeugungs-Einheit
4 zugeführten Steuersignals 6 Schaltspannungen erzeugt. In
einem praktischen Ausführungsbeispiel der Erfindung sind zwei
Schaltspannungen vorgesehen, eine Maximalspannung von 48 VDC
und eine Haltespannung von 16 VDC, die aus einer Versorgungsspannung
von 24 VDC erzeugt werden.
Dem steuerbaren Schalter 3 ist über einen Steuerausgang 7 einer
speicherprogrammierbaren Steuerung und über Potential
trennende Mittel 8 ein Steuersignal 9 zuführbar, wobei ein
aktiviertes Steuersignal 9 den Schalter 3 schließt. Dies
bewirkt, dass eine Schaltspannung 10 der Last 2 zugeführt
wird und der Laststrom 11 durch die Last 2 über einen Masseanschluss
M abfließt. Weitere Bestandteile der Schaltungsanordnung
wie Speicherdrossel 12, Löschglied 13 und Überspannungsschutzeinrichtung
14 sind für die Erfindung ohne
Bedeutung und brauchen daher nicht näher erläutert zu werden.Essential components of the circuit arrangement according to FIG. 1 are a
A
Zur Verdeutlichung der Erfindung wird auf Figur 2 verwiesen, in welcher Strom- und Spannungsverläufe dargestellt sind.To clarify the invention, reference is made to FIG. 2, in which current and voltage curves are shown.
Zu einem Zeitpunkt T0 wird der Last 2 (Figur 1) eine sprungförmige
Maximalspannung Um zugeführt, die z. B. der zweifachen
Last-Nennspannung Un entspricht. Diese Maximalspannung
Um bewirkt einen raschen Anstieg eines Laststromes I. Während
eines Zeitintervalls zwischen dem Zeitpunkt T0 und einem
Zeitpunkt T1 erkennt die Sensoreinheit 1 eine Stromschulter
Ss im Laststromverlauf, die z. B. durch die Bewegung eines
Ankers und die dadurch bewirkte Flussänderung verursacht
wird. Die Sensoreinheit 1 aktiviert daraufhin das Steuersignal
6, wodurch die Spannungserzeugungs-Einheit 4 zum
Zeitpunkt T1 die Schaltspannung von der Maximalspannung Um
sprungförmig auf eine Haltespannung Uh reduziert, die in
einem praktischen Ausführungsbeispiel der Erfindung zwei
Drittel der Last-Nennspannung Un beträgt. Durch die erhöhte
Schaltspannung Um zwischen den Zeitpunkten T0 und T1 und die
reduzierte Schaltspannung Uh ab dem Zeitpunkt T1 wird einerseits
ein schnelles Schalten der induktiven Last 2 bewirkt
und andererseits der Energiebedarf während geschalteter Last
2 verringert, wobei ab einem Zeitpunkt T2 im eingeschwungenen
Zustand ein Haltestrom Ih durch die Last 2 fließt.
Anstatt die Schaltspannung nach dem Erfassen der Stromschulter
Ss auf die Haltespannung Uh zu reduzieren, kann man auch
in der Art und Weise vorgehen, die Schaltspannung nach Ablauf
eines vorgebbaren Zeitintervalls zu reduzieren. Das Zeitintervall
wird entsprechend den technischen Angaben in den
Datenblättern der zu schaltenden induktiven Last so gewählt,
dass sichergestellt ist, dass die Stromschulter Ss innerhalb
dieses vorgegebenen Zeitintervalls auftritt. Die Schaltungsanordnung
nach Figur 1 ist in diesem Fall dahingehend zu
modifizieren, dass anstatt der Sensoreinheit 1 eine Zeitintervall-Überwachungseinheit
vorzusehen ist. At a point in time T0, the load 2 (FIG. 1) is supplied with an abrupt maximum voltage Um, which, for. B. corresponds to twice the nominal load voltage Un. This maximum voltage Um causes a rapid increase in a load current I. During a time interval between the time T0 and a time T1, the
Instead of reducing the switching voltage after the detection of the current shoulder Ss to the holding voltage Uh, one can also proceed in the manner of reducing the switching voltage after a predefinable time interval has elapsed. The time interval is selected in accordance with the technical specifications in the data sheets of the inductive load to be switched so that it is ensured that the current shoulder Ss occurs within this predetermined time interval. In this case, the circuit arrangement according to FIG. 1 is to be modified such that a time interval monitoring unit is to be provided instead of the
Es kann vorkommen, dass z. B. ein Anker in einer Spule nicht bewegt werden kann, da die Bewegung aufgrund einer Störung blockiert ist. In diesem Fall tritt keine Stromschulter auf und um zu verhindern, dass die Maximalspannung konstant an der Spule anliegt und die Spule dadurch beschädigt wird, ist es vorteilhaft, nach Ablauf eines vorgebbaren Zeitintervalls die Maximalspannung auf die Haltespannung zu reduzieren.It can happen that e.g. B. not an anchor in a coil can be moved because the movement is due to a disturbance is blocked. In this case, there is no electricity shoulder and to prevent the maximum voltage from constant the coil rests and the coil is damaged it is advantageous after a predefinable time interval reduce the maximum voltage to the withstand voltage.
Im Folgenden wird Bezug auf Figur 3 genommen, in der Schaltspannungen
dargestellt sind. Dabei zeigt Figur 3a eine
Schaltspannung in Form einer Gleichspannung, wobei die
Maximalspannung Um der doppelten Last-Nennspannung Un und
die Haltespannung Uh zwei Drittel dieser Last-Nennspannung Un
beträgt. Eine derartige Gleichspannung mit variabler Amplitude
erzeugt die Spannungserzeugungs-Einheit 4 (Figur 1), die
in Abhängigkeit des Steuersignals 6 die Schaltspannung variiert.In the following, reference is made to FIG. 3, in which switching voltages
are shown. 3a shows one
Switching voltage in the form of a DC voltage, the
Maximum voltage Um twice the nominal load voltage Un and
the holding voltage Uh two thirds of this nominal load voltage Un
is. Such a DC voltage with variable amplitude
generates the voltage generating unit 4 (Figure 1) that
the switching voltage varies depending on the
Figur 3b zeigt eine getaktete Ausführung, wobei ab einem Zeitpunkt T3 der Gleichanteil der Haltespannung von zwei Drittel der Last-Nennspannung durch eine Wechselspannung mit entsprechender Amplitude und Taktrate erzielt wird.Figure 3b shows a clocked version, with one Time T3 is the DC component of the withstand voltage of two Third of the nominal load voltage with an alternating voltage corresponding amplitude and clock rate is achieved.
Eine derartige pulsierende Gleichspannung mit konstanter
Amplitude und variablem Puls-Pausen-Verhältnis (Tastverhältnis)
ist vorteilhaft als Schaltspannung in einer in Figur 4
dargestellten Schaltungsanordnung zum Schalten mehrerer induktiver
Lasten mit bewegbaren Teilen einsetzbar. Der Einfachheit
halber ist in Figur 4 die Ansteuerung lediglich
eines Ausgangskanals gezeigt. Die in den Figuren 4 und 1
gleichen Teile sind mit gleichen Bezugszeichen versehen.
Eine Spannungserzeugungs-Einheit 4' schaltet über den
steuerbaren Schalter 3 und eine Sensoreinheit 1' der induktiven
Last 2 die Maximalspannung Um (Figur 3b) zu. Für den
Fall, dass die Sensoreinheit 1' eine Stromschulter erkennt
und/oder ein vorgebbares Zeitintervall abgelaufen ist, schaltet
die Sensoreinheit 1' einem UND-Verknüpfungsglied 14 ein
Puls-Pausen-Signal 15 zu, wodurch der steuerbare Schalter 3
die Maximalspannung Um entsprechend dem Puls-Pausen-Verhältnis
(Tastverhältnis) dieses Puls-Pausen-Signals zu- oder abschaltet.
Dieses Zu- oder Abschalten der Maximalspannung Um
gemäß dem durch die Sensoreinheit vorgebbaren Tastverhältnis
erzeugt einen Gleichanteil ab dem Zeitpunkt T3 (Figur 3b),
welcher der Haltespannung Uh (Figur 3a) entspricht.Such a pulsating DC voltage with constant amplitude and variable pulse-pause ratio (duty cycle) can advantageously be used as a switching voltage in a circuit arrangement shown in FIG. 4 for switching a plurality of inductive loads with movable parts. For the sake of simplicity, the control of only one output channel is shown in FIG. The same parts in Figures 4 and 1 are provided with the same reference numerals.
A voltage generating unit 4 'connects the maximum voltage Um (FIG. 3b) to the
Claims (6)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19961029 | 1999-12-16 | ||
DE19961029 | 1999-12-16 | ||
DE10003531A DE10003531A1 (en) | 1999-12-16 | 2000-01-27 | Load switching involves holding switching voltage constant until switch-off time if load current falls or remains constant during first time interval, reducing if load current increases |
DE10003531 | 2000-01-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1109178A2 true EP1109178A2 (en) | 2001-06-20 |
EP1109178A3 EP1109178A3 (en) | 2002-04-17 |
Family
ID=26004071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00127553A Withdrawn EP1109178A3 (en) | 1999-12-16 | 2000-12-15 | Method for switching an inductive load |
Country Status (1)
Country | Link |
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EP (1) | EP1109178A3 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007001478A1 (en) * | 2005-06-15 | 2007-01-04 | Honeywell International Inc. | Sensing armature motion in high-speed solenoids |
WO2011095223A1 (en) * | 2010-02-08 | 2011-08-11 | Siemens Aktiengesellschaft | Apparatus for an electromagnetic switching device |
DE102006014276B4 (en) * | 2005-04-01 | 2021-02-18 | Smc K.K. | Solenoid valve and solenoid valve drive circuit |
IT202000019366A1 (en) * | 2020-08-05 | 2022-02-05 | Lmp Srl | ELECTRONIC COMMAND AND CONTROL DEVICE FOR AN ELECTROMAGNETIC ACTUATOR, AND RELATIVE ELECTROMAGNETIC ACTUATOR |
DE102021204276A1 (en) | 2021-04-29 | 2022-11-03 | Robert Bosch Gesellschaft mit beschränkter Haftung | Circuit and method for controlling a metering valve and agricultural device |
DE102022126261B3 (en) | 2022-10-11 | 2024-01-04 | Schaeffler Technologies AG & Co. KG | Method for operating a valve in a motor vehicle |
Citations (6)
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DE3817770A1 (en) * | 1988-05-26 | 1989-11-30 | Daimler Benz Ag | Device for the timed operation of an electromagnetic valve |
US5245501A (en) * | 1988-12-22 | 1993-09-14 | Robert Bosch Gmbh | Process and apparatus for controlling and measuring the movement of an armature of an electromagnetic switching member |
EP0651413A1 (en) * | 1986-10-02 | 1995-05-03 | Motorola, Inc. | Solenoid driver control circuit with initial boost voltage |
DE19719602A1 (en) * | 1997-05-09 | 1998-11-12 | Fahrzeugklimaregelung Gmbh | Electronic control circuit |
DE19742037A1 (en) * | 1997-09-24 | 1999-03-25 | Wabco Gmbh | Armature release detection method in solenoid valve |
FR2778785A1 (en) * | 1998-05-14 | 1999-11-19 | Bosch Gmbh Robert | METHOD AND DEVICE FOR CONTROLLING AN ELECTROMAGNETIC USER |
-
2000
- 2000-12-15 EP EP00127553A patent/EP1109178A3/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0651413A1 (en) * | 1986-10-02 | 1995-05-03 | Motorola, Inc. | Solenoid driver control circuit with initial boost voltage |
DE3817770A1 (en) * | 1988-05-26 | 1989-11-30 | Daimler Benz Ag | Device for the timed operation of an electromagnetic valve |
US5245501A (en) * | 1988-12-22 | 1993-09-14 | Robert Bosch Gmbh | Process and apparatus for controlling and measuring the movement of an armature of an electromagnetic switching member |
DE19719602A1 (en) * | 1997-05-09 | 1998-11-12 | Fahrzeugklimaregelung Gmbh | Electronic control circuit |
DE19742037A1 (en) * | 1997-09-24 | 1999-03-25 | Wabco Gmbh | Armature release detection method in solenoid valve |
FR2778785A1 (en) * | 1998-05-14 | 1999-11-19 | Bosch Gmbh Robert | METHOD AND DEVICE FOR CONTROLLING AN ELECTROMAGNETIC USER |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006014276B4 (en) * | 2005-04-01 | 2021-02-18 | Smc K.K. | Solenoid valve and solenoid valve drive circuit |
WO2007001478A1 (en) * | 2005-06-15 | 2007-01-04 | Honeywell International Inc. | Sensing armature motion in high-speed solenoids |
US7595971B2 (en) | 2005-06-15 | 2009-09-29 | Honeywell International Inc. | Sensing armature motion in high-speed solenoids |
WO2011095223A1 (en) * | 2010-02-08 | 2011-08-11 | Siemens Aktiengesellschaft | Apparatus for an electromagnetic switching device |
CN102754176A (en) * | 2010-02-08 | 2012-10-24 | 西门子公司 | Apparatus for an electromagnetic switching device |
CN102754176B (en) * | 2010-02-08 | 2015-12-02 | 西门子公司 | For the device of electromagnetic switchgear |
IT202000019366A1 (en) * | 2020-08-05 | 2022-02-05 | Lmp Srl | ELECTRONIC COMMAND AND CONTROL DEVICE FOR AN ELECTROMAGNETIC ACTUATOR, AND RELATIVE ELECTROMAGNETIC ACTUATOR |
EP3951824A1 (en) * | 2020-08-05 | 2022-02-09 | LMP S.r.l. | Electronic command and control device for an electromagnetic actuator and electromagnetic actuator thereof |
US11521775B2 (en) | 2020-08-05 | 2022-12-06 | Lmp Srl | Electronic command and control device for an electromagnetic actuator and electromagnetic actuator thereof |
DE102021204276A1 (en) | 2021-04-29 | 2022-11-03 | Robert Bosch Gesellschaft mit beschränkter Haftung | Circuit and method for controlling a metering valve and agricultural device |
DE102022126261B3 (en) | 2022-10-11 | 2024-01-04 | Schaeffler Technologies AG & Co. KG | Method for operating a valve in a motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
EP1109178A3 (en) | 2002-04-17 |
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