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EP0693756A1 - Procédé et dispositif d'excitation d'un consommateur électromagnétique - Google Patents

Procédé et dispositif d'excitation d'un consommateur électromagnétique Download PDF

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Publication number
EP0693756A1
EP0693756A1 EP95109593A EP95109593A EP0693756A1 EP 0693756 A1 EP0693756 A1 EP 0693756A1 EP 95109593 A EP95109593 A EP 95109593A EP 95109593 A EP95109593 A EP 95109593A EP 0693756 A1 EP0693756 A1 EP 0693756A1
Authority
EP
European Patent Office
Prior art keywords
consumer
current
switching means
coil
connection
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Withdrawn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
EP95109593A
Other languages
German (de)
English (en)
Inventor
Werner Dipl.-Ing. Fischer
Viktor Dipl.-Ing. Kahr
Peter Dr.-Ing. Schmitz
Hubert Dipl.-Phys. Greif
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0693756A1 publication Critical patent/EP0693756A1/fr
Withdrawn legal-status Critical Current

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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
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1833—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current by changing number of parallel-connected turns or windings
    • 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
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1827—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current by changing number of serially-connected turns or windings

Definitions

  • the invention relates to a method and a device for controlling an electromagnetic consumer according to the preambles of the independent claims.
  • Such a method and such a device for controlling an electromagnetic consumer, in particular a solenoid valve is known from DE-OS 29 32 859 (US-A 4,345,296).
  • the inductive consumer in a first section (tightening phase) the inductive consumer is supplied with high power in order to achieve the best possible switching behavior.
  • a subsequent second section (holding current phase) the current flow through the consumer is reduced, since there is no longer any mechanical work to be done, but only the energy or the force for holding the solenoid valve has to be maintained. This force is based on the restoring force of the solenoid valve to be switched.
  • the invention has for its object to show in a method of a device for controlling an electromagnetic consumer of the type mentioned a way how the switching times of the solenoid valve can be shortened, with only a low power loss occurs.
  • the device and the method according to the invention have the advantage that the switching times of the solenoid valve are very short, the power loss and the interference level being very low.
  • FIG. 1 shows a block diagram of the essential elements of a first embodiment
  • FIG. 2 shows the essential elements of a second embodiment
  • FIG. 3 shows the current curve over time.
  • FIG. 1 schematically shows a first embodiment of the device according to the invention.
  • the electromagnetic consumer is preferably a coil 100 of a solenoid valve that is used in the area of fuel metering.
  • the use of the device according to the invention and the method according to the invention is, however, not restricted to use in fuel metering. It can be used with all electromagnetic consumers where a fast switching process when switching on and off is important.
  • the coil 100 of the consumer has three connections.
  • a first connection 101 is connected to the supply voltage Ubat.
  • the second connection 102 is connected to ground 111 via a first switching means 105 and a current measuring means 110.
  • the third connection 103 which is preferably a center tap of the coil, is also connected to ground 111 via a second switching means 115 and a further current measuring means 120.
  • a control unit 130 determines, based on various signals provided by sensors 140 or other control units, control signals for the first and second switching means.
  • control unit 130 processes a signal corresponding to the current flowing through the current measuring means 110 and 120.
  • the first and second switching means are preferably implemented as transistors, in particular as field effect transistors.
  • the current measuring means 110 and 120 are preferably implemented as ohmic resistors, the voltage drop at the two terminals of the resistors being used as a signal with respect to the currents flowing through the consumers.
  • the control unit 130 regulates the current flowing through the coils to predetermined values.
  • the implementation shown is particularly advantageous in that each switching means is assigned a current measuring resistor. This makes it possible to regulate the current through both partial coils to predetermined values.
  • FIG. 2 A further embodiment is shown in FIG. 2. Elements already described in FIG. 1 are designated here with the same reference symbols. Instead of a coil with a center tap, two coils are provided in this embodiment.
  • a coil 100a corresponds in terms of its properties to the entire coil in FIG. 1.
  • a coil 100b corresponds to the coil between the connection 101 and the center tap 103 in FIG. 1.
  • the two coils are each connected to the supply voltage Ubat with their one connection.
  • the other connection of the coil 100a is connected to the first switching means 105 and the other connection of the second coil 100b is connected to the second switching means 115.
  • control unit 130 calculates signals for actuating the first and second switching means.
  • the switching means 115 is activated in the first time period between the times T1 and T2 in such a way that the current flow only through the coil 100b or through the portion of the coil between the taps 101 and the center tap 103.
  • the effective coil has only a small ohmic resistance and a small number of turns or a small inductance. This causes the current through the coil, and hence the force applied by the coil, to increase rapidly.
  • the first switching means 105 is then activated such that it enables the current to flow through the coil 100a or through the entire coil 100.
  • the coil between the connections 101 and 102 or the coil 100a have a large number of turns and thus a large inductance and a larger ohmic resistance. This causes the current to drop to a smaller value, the so-called holding current. In This phase does not require a quick build-up or breakdown, but the high number of windings results in a high holding force with a low holding current.
  • the consumer has a variable inductance.
  • Different inductivities can be set in at least two time periods.
  • a small inductance is effective in the first period of the control phase of a metering.
  • the small inductance is achieved by a coil with a small number of turns.
  • a large inductance is effective in the second period of the control phase of a metering.
  • the large inductance is achieved by a coil with a large number of turns.
  • the various inductances can be implemented by activating switching means which are assigned to the partial coils. This makes it possible to appropriately dimension the coils according to the requirements in the different sections.
  • the coils are dimensioned such that the current rises quickly to the required value during the pull-in phase and the current in the holding current phase almost reaches the desired value for the holding current by appropriately dimensioning the winding resistance. During the holding current phase, it may therefore only be necessary to regulate a small proportion of the current.
  • the current flowing through the coil is adjusted to the holding current in the holding current phase and in the starting current phase.
  • the current is detected by means of the current measuring means 110.
  • the control unit 130 compares this value with a target value and controls the switching means 105 accordingly.
  • analog control or clocked current control takes place by means of a transistor. It is particularly advantageous here that most of the lowering of the current to the holding current level is due to the greater resistance of the coil which is active in the holding current phase. As a result, the switching means, particularly in the holding current phase, only have to absorb a very low power loss.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
EP95109593A 1994-07-22 1995-06-21 Procédé et dispositif d'excitation d'un consommateur électromagnétique Withdrawn EP0693756A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19944426021 DE4426021A1 (de) 1994-07-22 1994-07-22 Verfahren und Vorrichtung zur Ansteuerung eines elektromagnetischen Verbrauchers
DE4426021 1994-07-22

Publications (1)

Publication Number Publication Date
EP0693756A1 true EP0693756A1 (fr) 1996-01-24

Family

ID=6523903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109593A Withdrawn EP0693756A1 (fr) 1994-07-22 1995-06-21 Procédé et dispositif d'excitation d'un consommateur électromagnétique

Country Status (3)

Country Link
EP (1) EP0693756A1 (fr)
JP (1) JPH0845735A (fr)
DE (1) DE4426021A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998020400A3 (fr) * 1996-11-04 1998-07-23 Itt Mfg Enterprises Inc Circuit pour adapter le courant d'un circuit de commande de soupape au courant requis pour actionner la soupape
GB2322010A (en) * 1997-02-08 1998-08-12 Bosch Gmbh Robert A switching circuit control arrangement for an electromagnetic load
WO1999006677A1 (fr) * 1997-07-22 1999-02-11 Lsp Innovative Automotive Systems Gmbh Dispositif d'ajustement electromagnetique
EP1522699A3 (fr) * 2003-10-07 2006-04-05 Hitachi, Ltd. Injecteur de carburant et méthode pour sa commande
EP2264720A1 (fr) * 2009-04-09 2010-12-22 Tai-Her Yang Dispositif d'actionnement électromagnétique avec bobine taraudée de commande et de support
WO2014019973A1 (fr) * 2012-07-30 2014-02-06 Eaton Electrical Ip Gmbh & Co. Kg Dispositif de réglage de l'entraînement électromagnétique d'un appareil de commutation, en particulier d'un contacteur

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5752482A (en) * 1997-03-28 1998-05-19 Cummins Engine Company, Inc. System for integrally controlling current flow through number of inductive loads
JPH11148439A (ja) * 1997-06-26 1999-06-02 Hitachi Ltd 電磁式燃料噴射弁及びその燃料噴射方法
DE19741570A1 (de) * 1997-09-20 1999-03-25 Heinz Leiber Elektromagnetische Stelleinrichtung
US7061352B2 (en) * 2004-01-26 2006-06-13 Tzo-Ing Lin Noise-free low-power consumption wide voltage range DC and AC contactor and remote telephone control system using the same
DE102012204321A1 (de) * 2012-03-19 2013-09-19 Zf Friedrichshafen Ag Elektromagnetische Stellvorrichtung mit Eignung zur Ankerpositionserfassung
DE102019133007A1 (de) * 2019-12-04 2021-06-10 Wabco Europe Bvba Magnetventil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2932859A1 (de) 1979-08-14 1981-03-26 Robert Bosch Gmbh, 70469 Stuttgart Einrichtung zum steuern des stromes durch einen induktiven verbraucher, insbesondere ein magnetventil im kraftstoffzumesssystem einer brennkraftmaschine
GB2156156A (en) * 1984-03-15 1985-10-02 Hager Electro Gmbh & Co Electromagnetic switch arrangement
EP0251561A1 (fr) * 1986-06-16 1988-01-07 Canon Kabushiki Kaisha Générateur de champ magnétique
FR2611981A1 (fr) * 1987-02-25 1988-09-09 Mitsubishi Electric Corp Dispositif electromagnetique de commutation, notamment pour demarreur de moteur a combustion interne, et procede et appareil de commande d'un tel dispositif

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2932859A1 (de) 1979-08-14 1981-03-26 Robert Bosch Gmbh, 70469 Stuttgart Einrichtung zum steuern des stromes durch einen induktiven verbraucher, insbesondere ein magnetventil im kraftstoffzumesssystem einer brennkraftmaschine
GB2156156A (en) * 1984-03-15 1985-10-02 Hager Electro Gmbh & Co Electromagnetic switch arrangement
EP0251561A1 (fr) * 1986-06-16 1988-01-07 Canon Kabushiki Kaisha Générateur de champ magnétique
FR2611981A1 (fr) * 1987-02-25 1988-09-09 Mitsubishi Electric Corp Dispositif electromagnetique de commutation, notamment pour demarreur de moteur a combustion interne, et procede et appareil de commande d'un tel dispositif

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998020400A3 (fr) * 1996-11-04 1998-07-23 Itt Mfg Enterprises Inc Circuit pour adapter le courant d'un circuit de commande de soupape au courant requis pour actionner la soupape
GB2322010A (en) * 1997-02-08 1998-08-12 Bosch Gmbh Robert A switching circuit control arrangement for an electromagnetic load
FR2759487A1 (fr) * 1997-02-08 1998-08-14 Bosch Gmbh Robert Dispositif pour commander un appareil electromagnetique consommateur de courant electrique
GB2322010B (en) * 1997-02-08 1999-02-24 Bosch Gmbh Robert Control of an electromagnet load
WO1999006677A1 (fr) * 1997-07-22 1999-02-11 Lsp Innovative Automotive Systems Gmbh Dispositif d'ajustement electromagnetique
EP1522699A3 (fr) * 2003-10-07 2006-04-05 Hitachi, Ltd. Injecteur de carburant et méthode pour sa commande
US7095599B2 (en) 2003-10-07 2006-08-22 Hitachi, Ltd. Fuel injector and its control method
EP2264720A1 (fr) * 2009-04-09 2010-12-22 Tai-Her Yang Dispositif d'actionnement électromagnétique avec bobine taraudée de commande et de support
WO2014019973A1 (fr) * 2012-07-30 2014-02-06 Eaton Electrical Ip Gmbh & Co. Kg Dispositif de réglage de l'entraînement électromagnétique d'un appareil de commutation, en particulier d'un contacteur

Also Published As

Publication number Publication date
DE4426021A1 (de) 1996-01-25
JPH0845735A (ja) 1996-02-16

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