EP1109178A2 - Method for switching an inductive load - Google Patents

Method for switching an inductive load Download PDF

Info

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
load
switching
time interval
controllable switch
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Withdrawn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
EP00127553A
Other languages
German (de)
French (fr)
Other versions
EP1109178A3 (en
Inventor
Michael Abert
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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
Priority claimed from DE10003531A external-priority patent/DE10003531A1/en
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1109178A2 publication Critical patent/EP1109178A2/en
Publication of EP1109178A3 publication Critical patent/EP1109178A3/en
Withdrawn legal-status Critical Current

Links

Images

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

Es wird ein Verfahren zum Schalten einer induktiven Last (2) vorgeschlagen, das ein schnelles Schalten dieser Last ermöglicht. Dazu ist vorgesehen, dass eine der Last aufschaltbare Schaltspannung sprungförmig auf eine vorgebbare Maximalspannung (Um) wechselt und dass nach dem Erkennen einer Laststromschulter (Ss) oder nach Ablauf eines vorgebbaren Zeitintervalls die Maximalspannung (Um) auf eine Haltespannung (Uh) sprungförmig oder getaktet reduziert wird.

Figure 00000001
A method for switching an inductive load (2) is proposed which enables this load to be switched quickly. For this purpose, it is provided that a switching voltage that can be applied to the load changes abruptly to a predeterminable maximum voltage (Um) and that after recognizing a load current shoulder (Ss) or after a predefinable time interval, the maximum voltage (Um) is suddenly or clocked reduced to a holding voltage (Uh) becomes.
Figure 00000001

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 claim 2 Measures result in a lower energy requirement with switched inductive load and accelerates switch-off processes.

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.
Show it
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 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. In a practical exemplary embodiment of the invention, 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.

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 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. 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.
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 sensor unit 1.

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 control signal 6.

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 inductive load 2 via the controllable switch 3 and a 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).

Claims (6)

Verfahren zum Schalten einer induktiven Last (2), insbesondere einer induktiven Last mit bewegbaren Teilen, welcher eine Schaltspannung (Un, Um, Uh) zuführbar ist, gekennzeichnet durch folgende Verfahrensschritte: a) sprungförmiges Aufschalten der Schaltspannung auf eine vorgebbare Maximalspannung (Um), b) sprungförmiges oder getaktetes Reduzieren der maximalen Schaltspannung (Um) auf eine Haltespannung (Uh) nach dem Erkennen einer Laststromschulter (Ss) und/oder nach Ablauf eines vorgebbaren Zeitintervalls. Method for switching an inductive load (2), in particular an inductive load with movable parts, to which a switching voltage (Un, Um, Uh) can be supplied, characterized by the following method steps: a) sudden switching of the switching voltage to a predeterminable maximum voltage (Um), b) sudden or clocked reduction of the maximum switching voltage (Um) to a holding voltage (Uh) after the detection of a load current shoulder (Ss) and / or after a predefinable time interval. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Haltespannung (Uh) geringer als die Last-Nennspannung (Un) ist.A method according to claim 1, characterized in that the holding voltage (Uh) is less than the nominal load voltage (Un). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Schaltspannung eine Gleichspannung mit variabler Amplitude oder eine pulsierende Gleichspannung mit konstanter Amplitude und variablem Puls-Pausen-Verhältnis (Tastverhältnis) ist.A method according to claim 1, characterized in that the switching voltage is a DC voltage with variable amplitude or a pulsating DC voltage with constant amplitude and variable pulse-pause ratio (duty cycle). Schaltungsanordnung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass Mittel (1) zur Erfassung der Laststromschulter (Ss) und/oder Mittel zur Vorgabe eines Zeitintervalls vorgesehen sind, dass diese Mittel (1) in Reihe zur Last (2) und zu einem steuerbaren Schalter (3) geschaltet sind, dass diese Mittel (1) mit Spannungserzeugungs-Mitteln (4) verbunden sind, welche eine Schaltspannung (Un, Um, Uh) erzeugen, die über den steuerbaren Schalter (3) der Last (2) zuführbar ist. Circuit arrangement for performing the method according to one of claims 1 to 3, characterized in that that means (1) for detecting the load current shoulder (Ss) and / or means for specifying a time interval are provided, that these means (1) are connected in series to the load (2) and to a controllable switch (3), that these means (1) are connected to voltage generating means (4) which generate a switching voltage (Un, Um, Uh) which can be supplied to the load (2) via the controllable switch (3). Digitalausgabeeinheit für eine speicherprogrammierbare Steuerung mit einer Schaltungsanordnung nach Anspruch 4, wobei durch eine CPU der speicherprogrammierbaren Steuerung dem steuerbaren Schalter (3) ein Steuersignal (6) zuführbar ist.Digital output unit for a programmable logic controller Control with a circuit arrangement according to claim 4, whereby by a CPU of the programmable logic controller a control signal (6) can be fed to the controllable switch (3) is. Digitalausgabeeinheit nach Anspruch 5 mit mehreren Ausgangskanälen, wobei an jeden Kanal eine Last (2) über einen steuerbaren Schalter (3) anschließbar ist, Mittel (1) zur Erfassung der Laststromschulter (Ss) und/oder Mittel zur Vorgabe eines Zeitintervalls vorgesehen sind. Digital output unit according to claim 5 with a plurality of output channels, each channel a load (2) can be connected via a controllable switch (3), Means (1) for detecting the load current shoulder (Ss) and / or means for specifying a time interval are provided.
EP00127553A 1999-12-16 2000-12-15 Method for switching an inductive load Withdrawn EP1109178A3 (en)

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 Procedure for switching an inductive load
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
EP (1) EP1109178A3 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729056A (en) * 1986-10-02 1988-03-01 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
DE3843138A1 (en) * 1988-12-22 1990-06-28 Bosch Gmbh Robert METHOD OF CONTROLLING AND DETECTING THE MOVEMENT OF AN ARMATURE OF AN ELECTROMAGNETIC SWITCHING DEVICE
DE19719602A1 (en) * 1997-05-09 1998-11-12 Fahrzeugklimaregelung Gmbh Electronic control circuit
DE19742037B4 (en) * 1997-09-24 2007-08-09 Wabco Gmbh Method for detecting the waste of a magnetically operated device
DE19821561A1 (en) * 1998-05-14 1999-11-18 Bosch Gmbh Robert Solenoid valve drive method and apparatus for motor vehicle fuel measurement in internal combustion engine

Cited By (11)

* Cited by examiner, † Cited by third party
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 Devices for electromagnetic switchgear
CN102754176B (en) * 2010-02-08 2015-12-02 西门子公司 Devices for 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

Similar Documents

Publication Publication Date Title
EP1851846B1 (en) Inverter
DE102012216133B4 (en) DC/DC CONVERTER, METHOD FOR PROVIDING AN OUTPUT VOLTAGE BASED ON AN INPUT VOLTAGE AND COMPUTER PROGRAM
EP0124765B1 (en) Digital power switching amplifier
EP2850725B1 (en) Method for controlling a power source, and power source and process controller therefor
DE102004031393A1 (en) DC-DC converter and method for converting a DC voltage
DE112018002324T5 (en) DEAD ZONE FREE CONTROL
DE4434179A1 (en) Circuit arrangement for monitoring a control circuit
EP2066011B1 (en) Method for controlling a direct current power converter
DE102014218001A1 (en) Inverter device, inverter, power generation system, and methods of controlling the inverter device
DE60120900T2 (en) CIRCUIT AND METHOD FOR HIGHLY EFFICIENT OPERATION OF PIEZOELECTRIC LOADS
DE3227296C2 (en) Pulse width modulator circuit with controllable switch-on delay
EP1109178A2 (en) Method for switching an inductive load
WO1995002914A1 (en) Buffered d.c. power supply
DE102015217311B4 (en) Method and device for controlling a coil drive
EP1631127B1 (en) Electronic ballast and operating method for a gas discharge lamp
DE102004022947B3 (en) Method for controlling pulse-width-controlled, inductive loads and drive circuit therefor
DE10003531A1 (en) Procedure for switching an inductive load
EP0590304A2 (en) Method for the pilot control of a switched power supply for the compensation of variations of the distribution voltage
EP1109177B1 (en) Method for switching a load
DE4309031A1 (en) Method for operating several thyristor controllers connected in parallel
EP1529335A1 (en) Device for controlling power by phase control, and method for reducing harmonic waves
EP1186093B1 (en) Device and method for line-voltage dependent thyristor controlled pre-charging of output capacitors in a three-level pulse rectifier system
DE10013928C2 (en) Procedure for switching a load
EP3822993A1 (en) Method and device for electrical actuation of an actuator
EP0345624B1 (en) Circuit arrangement for drawing a practically sinusoidal current with network frequency from the network and for transferring this electric energy into a galvanically coupled DC/DC system

Legal Events

Date Code Title Description
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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20021018