EP0376493A1 - Steuerschaltung - Google Patents

Steuerschaltung Download PDF

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Publication number
EP0376493A1
EP0376493A1 EP89312438A EP89312438A EP0376493A1 EP 0376493 A1 EP0376493 A1 EP 0376493A1 EP 89312438 A EP89312438 A EP 89312438A EP 89312438 A EP89312438 A EP 89312438A EP 0376493 A1 EP0376493 A1 EP 0376493A1
Authority
EP
European Patent Office
Prior art keywords
current
solenoid winding
switch
control circuit
winding
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Withdrawn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
EP89312438A
Other languages
English (en)
French (fr)
Inventor
Anthony Thomas Harcombe
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of EP0376493A1 publication Critical patent/EP0376493A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • 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
    • 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

Definitions

  • This invention relates to a method of and a control circuit for controlling the flow of current in a solenoid of an electromagnetic actuator having an armature, the armature in use being coupled to a member movable upon energisation of the solenoid, into contact with a stop.
  • the movement of the armature and the member lags behind the rise in current. This is because a certain value of magnetic flux is required before the armature and member start to move. As the armature starts to move the air gap diminishes and the magnetic pull increases so that even taking into account the inertia of the armature and member the armature and member are accelerated towards the stop. The stop is contacted with considerable velocity which causes a bouncing action to take place. If for example the member is the valve member of a fuel control valve, pressure waves can be set up which may cause cavitation in the fuel besides making it difficult to decide when the valve is effectively closed.
  • a method of controlling the flow of current in the solenoid of an actuator comprises connecting the solenoid to a high voltage supply to obtain a rapid rise in the current flowing in the solenoid, disconnecting the solenoid from the supply when a peak value of current flows in the winding, allowing the current in the solenoid to decay at a first rate, increasing the rate of decay of current until the current reaches a value below the hold value of the current and then increasing the current to the hold value.
  • a control circuit for controlling the flow of current in the solenoid of an electromagnetic actuator comprises first and second switches for connecting the first and second ends of the solenoid to first and second supply terminals respectively said terminals in use, being connected to a source of electric supply, first and second diodes connected between the first and second ends of the solenoid and the second and first terminals, said diodes being poled so that closure of said first and second switches does not result in current flow through the first and second diodes from the source of supply and control means operable upon receipt of a control signal to initially close said switches to achieve a rapid rise of current in the solenoid until a peak value of current is attained, then opening said first switch to allow the current to decay at a first rate, then opening said second switch to allow the current to decay at an increased rate and then closing at least one of the switches to allow the current flowing in the solenoid to be brought back to a holding value.
  • Figures 1 and 2 illustrate the current and armature lift diagrams of an actuator which is controlled in the conventional manner, the control pulse being indicated at 9. From Figure 1 it will be seen that there is a period A during which the current I flowing in the solenoid rises at a high rate to a peak current value IP and this is followed by a period B during which the solenoid is disconnected from the supply, in which the current decays. During the period B the current in the winding flows through the usual fly wheel diode. The current is allowed to fall to a hold value IH and when this value is reached the solenoid is reconnected to a supply to maintain either the continuous value of holding current IH or by well known switching techniques, a mean value.
  • the holding current is maintained for a period C and at the end of the period C which occurs when the control pulse 9 is removed, the current decays quickly by reason of a special switching arrangement which will be described.
  • movement of the armature does not start to take place until part way through the period A and it continues in the period B until a stop is engaged and the aforesaid bounce occurs.
  • FIGS 3 and 4 show the equivalent diagrams but for the arrangement where the current is controlled in accordance with the invention.
  • the same periods A, B and C are identified but it will be noted that period B is now shorter and between periods B and C there are two further periods D and E.
  • period D the current falls at a rate which is higher than in period B and this is achieved by the circuit to be described.
  • the current is allowed to fall to a value IL which is below the holding current IH and in period E the current increases at a high rate conveniently generated by the same voltage as in period A, until the value IH is reached.
  • the lift curve as the armature approaches the stop is more rounded than in Figure 2, the armature in fact approaches the stop with a reduced velocity. It will be noted that the bounce has been eliminated and although the armature may take fractionally longer to reach the stop the performance of the actuator is more predictable.
  • the circuit includes terminals 10 and 11 for connection to the positive and negative terminals of a source of DC supply 12.
  • the solenoid winding of the actuator is indicated at 13 and one terminal thereof is connected to the supply terminal 11 by way of a switch SW1.
  • the other terminal of the winding is connected through a current sensing device 14 to one terminal of a switch SW2 the other terminal of which is connected to the supply terminal 10.
  • a first diode D1 has its anode connected to the one terminal of the winding and its cathode connected to the supply terminal 10 and a second diode D2 has its anode connected to the supply terminal 11 and its cathode connected to the said other terminal of the winding.
  • the switches SW1 and SW2 are shown as relay contacts but in practice will be semi-conductor devices the conduction of which is controlled by a control network 15.
  • the network receives a control pulse 9 at an input 16 and it has a further input which receives a signal from the current sensing device 14.
  • the network also controls the operation of a current controller 17 which is shown to be connected in parallel with the switch SW2.
  • switches SW1 and SW2 are closed so that the winding 13 is connected directly to the supply terminals.
  • the current in the solenoid rises rapidly and at the end of the period A when the peak current value IP is sensed, switch SW1 is opened and diode D1 acts as a fly wheel diode so that the current in the winding decays at a low rate.
  • switch SW2 is opened and both diodes conduct, the current decaying more quickly and the energy in the winding being returned to the source of supply.
  • the switches SW1 and SW2 can be reversed but in this case the current controller will be connected in parallel with the switch SW1.
  • the switch with which it would be connected in parallel may be switched ON and OFF to provide a mean holding current. This switch must be a higher quality component than the other switch in view of the more arduous duty it must perform.
  • Figure 5 shows a further winding 13A the one terminal of which is connected to the supply terminal 11 by way of a switch SW3.
  • a further diode D3 is provided which functions so far as the winding 13A is concerned, in the same way as diode D1 and the switch SW3 has the same role as the switch SW1.
  • Figure 6 shows one example of the control network 15 and it includes a switch control circuit 18 which has outputs to the aforesaid switches and the current controller 17. It also has an input 19 to determine which of the solenoids in the multi-solenoid arrangement is to be energised.
  • the network also includes a current level detector 20 which receives the signal from the current sensor 14 and two further inputs for setting the peak current IP and the holding current IH.
  • the network also includes a timer 21.
  • the current level detector 20 provides signals to the control circuit 18 when the peak current IP is attained and the holding current IH.
  • the timer can be responsive to the start of the control pulse or the attainment of the peak current IP. The timer determines periods.
  • Switch SW1 is therefore opened upon the detection of the peak current IP and then the timer will cause opening of switch SW2 for the period D either a predetermined time after the start of the control pulse or a predetermined time after the attainment of the peak current.
  • the set inputs detector 20 and also the timer 21 are shown as being adjustable. In practise they will at least be preset or replaced by fixed value components.
  • control network 15 is seen in Figure 7 in which the switch control circuit 18 is controlled by a more complex form of level detector 22 in which the peak value IP, the hold value IH and the desired current levels at the end of periods B and D are preset.
  • the holding current IH in Figure 3 is reduced. This is because with the reduction or elimination of bounce, the holding force as determined by the holding current can be reduced. If desired the peak current IP can be increased in order to achieve more rapid movement of the armature. With the usual arrangement this would increase the possibility of bounce but with the control method described the bounce will be minimised. If necessary the holding current IH can be increased to provide an increased force to control the armature. This is possible because the holding current level is reached only when the armature is close to its stop. The armature does not therefore undergo any significant acceleration and the high holding force tends to latch the armature against its stop.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetically Actuated Valves (AREA)
EP89312438A 1988-12-22 1989-11-29 Steuerschaltung Withdrawn EP0376493A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8829902 1988-12-22
GB888829902A GB8829902D0 (en) 1988-12-22 1988-12-22 Control circuit

Publications (1)

Publication Number Publication Date
EP0376493A1 true EP0376493A1 (de) 1990-07-04

Family

ID=10648927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89312438A Withdrawn EP0376493A1 (de) 1988-12-22 1989-11-29 Steuerschaltung

Country Status (5)

Country Link
EP (1) EP0376493A1 (de)
JP (1) JPH02230702A (de)
KR (1) KR900010844A (de)
BR (1) BR8906712A (de)
GB (1) GB8829902D0 (de)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994019810A1 (de) * 1993-02-23 1994-09-01 Robert Bosch Gmbh Steuerschaltung für ein magnetventil
WO1996005992A1 (de) * 1994-08-22 1996-02-29 Robert Bosch Gmbh Verfahren und vorrichtung zur ansteuerung eines elektromagnetischen ventils
DE4430867A1 (de) * 1994-08-31 1996-03-07 Licentia Gmbh Schaltungsanordnung zur Regelung des elektromagnetischen Antriebes eines Schaltgerätes
WO1996012098A1 (en) * 1994-10-13 1996-04-25 Lucas Industries Public Limited Company Drive circuit
EP0737806A2 (de) * 1995-04-08 1996-10-16 Lucas Industries Public Limited Company Steuerschaltung
WO1996035867A1 (en) * 1995-05-12 1996-11-14 Lucas Industries Public Limited Company Fuel system
EP0691464A3 (de) * 1994-07-07 1996-11-27 Lucas Ind Plc Treiberschaltung für ein Solenoid
WO1997002970A1 (de) * 1995-07-08 1997-01-30 Itt Automotive Europe Gmbh Hydraulische bremsanlage mit elektrisch umschaltbaren hydraulikventilen
EP0764473A2 (de) * 1995-09-25 1997-03-26 Nordson Corporation Verbesserter Treiber für elektrische Pistole
EP0711910A3 (de) * 1994-11-11 1997-06-11 Lucas Ind Plc Treiberschaltung für elektromagnetisches Ventil
GB2310540A (en) * 1996-02-24 1997-08-27 Bosch Gmbh Robert Controlling armature movement in an electromagnetic device
EP0834013A1 (de) * 1995-06-23 1998-04-08 Diesel Technology Company Brennstoffpumpe und verfahren zu ihrem betrieb
DE19700521A1 (de) * 1997-01-09 1998-07-16 Siemens Ag Kommunikationsfähiges Schütz mit elektronisch gesteuertem Antrieb
WO1998052201A1 (de) * 1997-05-09 1998-11-19 GKR Gesellschaft für Fahrzeugklimaregelung mbH Elektronische steuerschaltung
US6298829B1 (en) 1999-10-15 2001-10-09 Westport Research Inc. Directly actuated injection valve
WO1998004823A3 (en) * 1996-07-26 2002-09-26 Siemens Automotive Corporation Armature motion control method and apparatus for a fuel injector
US6781810B1 (en) 1997-01-09 2004-08-24 Siemens Aktiengesellschaft Reduced tensioning time for electronically controlled switch contactors
DE102008018259A1 (de) * 2008-03-31 2009-10-08 Siemens Aktiengesellschaft Elektronische Schaltgerät, insbesondere Kompaktwendestarter
DE102008046374B3 (de) * 2008-09-09 2009-12-31 Siemens Aktiengesellschaft Schaltgerät
DE102008046375A1 (de) 2008-09-09 2010-03-11 Siemens Aktiengesellschaft Verfahren zur Bestimmung des Schließzeitpunktes eines Ankers in einem Magnetsystem eines elektronisch angesteuerten Schaltgerätes
EP2521154A1 (de) * 2011-05-02 2012-11-07 ABB Technology AG Elektromagentisch betätigte Schaltvorrichtung und Verfahren zur Steuerung der Schaltvorgänge dieser Schaltvorrichtung
US10217586B2 (en) 2013-12-02 2019-02-26 Siemens Aktiengesellschaft Electromagnetic actuator
EP2538429B1 (de) 2011-06-24 2019-10-16 Tavrida Electric Holding AG Verfahren und Vorrichtung zur Steuerung des Betriebs von Schutzschaltern
US10690067B2 (en) 2016-01-22 2020-06-23 Nissan Motor Co., Ltd. Waste gate valve control method and control device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005056210A1 (de) 2005-11-25 2007-05-31 Robert Bosch Gmbh Verfahren zum sicheren Schließen eines Magnetventils
DE102007023716A1 (de) * 2006-11-02 2008-05-08 Continental Teves Ag & Co. Ohg Proportionalregelventil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706011A (en) * 1971-05-14 1972-12-12 Andrew W Vincent Timer circuit for magnetic actuators
US4520420A (en) * 1982-12-01 1985-05-28 Nippondenso Co., Ltd. Current control method and apparatus for electromagnetic valves
EP0180060A1 (de) * 1984-10-31 1986-05-07 International Business Machines Corporation Treiberschaltung für eine Drucknadel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706011A (en) * 1971-05-14 1972-12-12 Andrew W Vincent Timer circuit for magnetic actuators
US4520420A (en) * 1982-12-01 1985-05-28 Nippondenso Co., Ltd. Current control method and apparatus for electromagnetic valves
EP0180060A1 (de) * 1984-10-31 1986-05-07 International Business Machines Corporation Treiberschaltung für eine Drucknadel

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5645097A (en) * 1993-02-23 1997-07-08 Robert Bosch Gmbh Control circuit for a solenoid valve
WO1994019810A1 (de) * 1993-02-23 1994-09-01 Robert Bosch Gmbh Steuerschaltung für ein magnetventil
US5825216A (en) * 1994-07-07 1998-10-20 Lucas Industries Public Limited Company Method of operating a drive circuit for a solenoid
EP0691464A3 (de) * 1994-07-07 1996-11-27 Lucas Ind Plc Treiberschaltung für ein Solenoid
WO1996005992A1 (de) * 1994-08-22 1996-02-29 Robert Bosch Gmbh Verfahren und vorrichtung zur ansteuerung eines elektromagnetischen ventils
US5823640A (en) * 1994-08-22 1998-10-20 Robert Bosch Gmbh Method and device for driving an electromagnetic valve
CN1050811C (zh) * 1994-08-22 2000-03-29 罗伯特·博施有限公司 控制一种电磁阀的方法及装置
DE4430867A1 (de) * 1994-08-31 1996-03-07 Licentia Gmbh Schaltungsanordnung zur Regelung des elektromagnetischen Antriebes eines Schaltgerätes
US5673165A (en) * 1994-08-31 1997-09-30 Aeg Niederspannungstechnik Gmbh Circuit arrangement for controlling the electromagnetic drive of a switching device
EP0939411A3 (de) * 1994-10-13 2000-07-26 Lucas Industries Limited Treiberschaltung
EP0939411A2 (de) * 1994-10-13 1999-09-01 LUCAS INDUSTRIES public limited company Treiberschaltung
EP0959238A2 (de) * 1994-10-13 1999-11-24 LUCAS INDUSTRIES public limited company Treiberschaltung
EP0959238A3 (de) * 1994-10-13 2001-08-29 Delphi Technologies, Inc. Treiberschaltung
WO1996012098A1 (en) * 1994-10-13 1996-04-25 Lucas Industries Public Limited Company Drive circuit
US5924435A (en) * 1994-11-11 1999-07-20 Lucas Industries Public Limited Company Method of energizing an electromagnetically operable control valve, and fuel system incorporating same
EP0711910A3 (de) * 1994-11-11 1997-06-11 Lucas Ind Plc Treiberschaltung für elektromagnetisches Ventil
EP0737806A3 (de) * 1995-04-08 1996-10-30 Lucas Industries Public Limited Company Steuerschaltung
US5668476A (en) * 1995-04-08 1997-09-16 Lucas Industries Public Limited Company Method of detecting when a moving compoment attains a final position
EP0737806A2 (de) * 1995-04-08 1996-10-16 Lucas Industries Public Limited Company Steuerschaltung
WO1996035867A1 (en) * 1995-05-12 1996-11-14 Lucas Industries Public Limited Company Fuel system
EP0834013A4 (de) * 1995-06-23 1999-09-22 Diesel Tech Co Brennstoffpumpe und verfahren zu ihrem betrieb
EP0834013A1 (de) * 1995-06-23 1998-04-08 Diesel Technology Company Brennstoffpumpe und verfahren zu ihrem betrieb
WO1997002970A1 (de) * 1995-07-08 1997-01-30 Itt Automotive Europe Gmbh Hydraulische bremsanlage mit elektrisch umschaltbaren hydraulikventilen
US5812355A (en) * 1995-09-25 1998-09-22 Nordson Corporation Electric gun driver
EP0764473A3 (de) * 1995-09-25 1997-10-29 Nordson Corp Verbesserter Treiber für elektrische Pistole
AU701788B2 (en) * 1995-09-25 1999-02-04 Nordson Corporation Improved electric gun driver
EP0764473A2 (de) * 1995-09-25 1997-03-26 Nordson Corporation Verbesserter Treiber für elektrische Pistole
GB2310540A (en) * 1996-02-24 1997-08-27 Bosch Gmbh Robert Controlling armature movement in an electromagnetic device
GB2310540B (en) * 1996-02-24 1998-03-18 Bosch Gmbh Robert Method of and control means for controlling armature movement in an electromagnetic device
WO1998004823A3 (en) * 1996-07-26 2002-09-26 Siemens Automotive Corporation Armature motion control method and apparatus for a fuel injector
DE19700521C2 (de) * 1997-01-09 1998-10-15 Siemens Ag Kommunikationsfähiges Schütz mit elektronisch gesteuertem Antrieb
DE19700521A1 (de) * 1997-01-09 1998-07-16 Siemens Ag Kommunikationsfähiges Schütz mit elektronisch gesteuertem Antrieb
US6781810B1 (en) 1997-01-09 2004-08-24 Siemens Aktiengesellschaft Reduced tensioning time for electronically controlled switch contactors
WO1998052201A1 (de) * 1997-05-09 1998-11-19 GKR Gesellschaft für Fahrzeugklimaregelung mbH Elektronische steuerschaltung
US6394414B1 (en) 1997-05-09 2002-05-28 Robert Bosch Gmbh Electronic control circuit
US6298829B1 (en) 1999-10-15 2001-10-09 Westport Research Inc. Directly actuated injection valve
WO2001029400A3 (en) * 1999-10-15 2001-11-08 Westport Res Inc Directly actuated injection valve
DE102008018259A1 (de) * 2008-03-31 2009-10-08 Siemens Aktiengesellschaft Elektronische Schaltgerät, insbesondere Kompaktwendestarter
DE102008046374B3 (de) * 2008-09-09 2009-12-31 Siemens Aktiengesellschaft Schaltgerät
DE102008046375A1 (de) 2008-09-09 2010-03-11 Siemens Aktiengesellschaft Verfahren zur Bestimmung des Schließzeitpunktes eines Ankers in einem Magnetsystem eines elektronisch angesteuerten Schaltgerätes
EP2521154A1 (de) * 2011-05-02 2012-11-07 ABB Technology AG Elektromagentisch betätigte Schaltvorrichtung und Verfahren zur Steuerung der Schaltvorgänge dieser Schaltvorrichtung
CN102768909A (zh) * 2011-05-02 2012-11-07 Abb技术股份公司 电磁致动切换装置和控制所述切换装置的切换操作的方法
US8976502B2 (en) 2011-05-02 2015-03-10 Abb Technology Ag Electromagnetically actuated switching device and a method for controlling the switching operations of said switching device
RU2594762C2 (ru) * 2011-05-02 2016-08-20 Абб Текнолоджи Аг Коммутационное устройство с электромагнитным приводом и способ управления коммутационными операциями упомянутого коммутационного устройства
CN102768909B (zh) * 2011-05-02 2016-12-14 Abb技术股份公司 电磁致动切换装置和控制所述切换装置的切换操作的方法
EP2538429B1 (de) 2011-06-24 2019-10-16 Tavrida Electric Holding AG Verfahren und Vorrichtung zur Steuerung des Betriebs von Schutzschaltern
US10217586B2 (en) 2013-12-02 2019-02-26 Siemens Aktiengesellschaft Electromagnetic actuator
US10690067B2 (en) 2016-01-22 2020-06-23 Nissan Motor Co., Ltd. Waste gate valve control method and control device

Also Published As

Publication number Publication date
BR8906712A (pt) 1990-09-11
GB8829902D0 (en) 1989-02-15
KR900010844A (ko) 1990-07-09
JPH02230702A (ja) 1990-09-13

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