EP0867898B1 - Dispositif électromagnétique de positionnement - Google Patents

Dispositif électromagnétique de positionnement Download PDF

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Publication number
EP0867898B1
EP0867898B1 EP98100775A EP98100775A EP0867898B1 EP 0867898 B1 EP0867898 B1 EP 0867898B1 EP 98100775 A EP98100775 A EP 98100775A EP 98100775 A EP98100775 A EP 98100775A EP 0867898 B1 EP0867898 B1 EP 0867898B1
Authority
EP
European Patent Office
Prior art keywords
positioning device
excitation
permanent magnet
armature
electromagnetically operating
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.)
Expired - Lifetime
Application number
EP98100775A
Other languages
German (de)
English (en)
Other versions
EP0867898A1 (fr
Inventor
Wolfgang Blaffert
Hans-Peter Oesterle
Schäfer Heinz
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.)
Kendrion Binder Magnete GmbH
Original Assignee
Kendrion Binder Magnete 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 Kendrion Binder Magnete GmbH filed Critical Kendrion Binder Magnete GmbH
Publication of EP0867898A1 publication Critical patent/EP0867898A1/fr
Application granted granted Critical
Publication of EP0867898B1 publication Critical patent/EP0867898B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • H01F7/1646—Armatures or stationary parts of magnetic circuit having permanent magnet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • 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
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets

Definitions

  • the invention relates to an electromagnetically operating point device the specified in the preamble of claim 1 Art.
  • Such an electromagnetic actuator is known from DE-C-0 912 721.
  • EP-A-0 405 191 and EP-A-0 405 187 Other electromagnetic actuators are known from EP-A-0 405 191 and EP-A-0 405 187.
  • the actuator is for electromagnetic control of the gas exchange valve one Reciprocating internal combustion engine provided.
  • the actuator has two mutually objectionable magnet systems, between which an anchor plate with an actuator stem to which the valve plate of the valve is coupled, can be moved back and forth.
  • the valve-side magnet system for opening the valve exists from a known electromagnet with excitation coil, while the magnetic system facing away from the valve for closing of the valve has a permanent magnet whose magnetic field can be neutralized by a compensation coil.
  • an electromagnetically working Control consists of two magnet systems each with an excitation coil and an associated permanent magnet. Both systems, i.e. Permanent electromagnets act on a common anchor plate between them, which is firmly connected to a valve stem. On the anchor plate and thus push the valve in the opposite direction two feathers. The permanent magnets keep the armature in the end positions. The holding force of the permanent magnets becomes a trigger the valve movement by energizing the associated electromagnetic System lifted so that the anchor and therefore the valve under the action of the other magnet is transferred to the other end position.
  • the holding force of the two permanent magnets can be determined by a, the magnetic field of the permanent magnet opposite Cancel the DC field of the associated electromagnet. Will the Excitation coil of the permanent electromagnet in question is supplied with a current of suitable polarity and strength the permanent magnet "neutralizes". The result is that the anchor falls under the action of the preloaded spring and from which other permanent electromagnet is captured. Whose Permanent magnet in turn holds the armature in its stroke end position until its holding force through the constant field of this permanent magnet assigned permanent magnets assigned electromagnetic system will be annulled.
  • the advantage of this solution is that only a short alternating energization of the electromagnetic Systems is necessary. Another advantage is there in the fact that this control device is relatively short Valve closing and opening times are available. About that In addition, the permanent magnets ensure that the control valve in the Normally with the engine switched off and thus with the engine switched off Power supply remains in the desired stroke end position.
  • each of the two excitation coils Provide suitable control signals separately.
  • the control circuit must ensure that no overlapping of the switch-on times accidentally occurs.
  • the on and off times of the control signals for the two excitation coils exactly in time be coordinated.
  • actuators are also in DE 30 24 109 A1 and DE 33 07 683 C1 described. Both actuators have also two electromagnets, between which an anchor plate is movable back and forth. The anchor plate itself is firmly connected with an employment. In these two However, no magnetic system with permanent magnets is provided for documents.
  • the present invention is based on the object Electromechanical actuator mentioned at the beginning so that on the one hand a considerably easier one Control of the excitation coils is possible, and on the other hand the actuator in the de-energized state always in a defined, predetermined end position is brought.
  • This task is electromagnetic in the aforementioned Actuating device working in the license plate of the specified features solved.
  • the invention therefore essentially consists in that both connected in series or parallel to each other unchanged Excitation coils from the control circuit to the mutual Moving the armature into the first and second switching positions On / off control signals are provided, the A control signal after a predetermined first value lower second value (holding excitation) can be reduced.
  • both excitation coils are due through their series or parallel connection of current.
  • the anchor is based on its rest position, in which he on the one provided with the permanent magnet Electromagnet is present on the opposite electromagnet drawn. This happens because the effect of the Permanent magnets on the one hand by energizing one Excitation coil neutralized and by the simultaneous Excitation of the other excitation coil one magnetic field in the other Electromagnet builds up. This latter magnetic field pulls the armature to the other electromagnet. Will then the current through the two excitation coils switched off, falls the anchor returns to its rest position.
  • the spring force of the springs and the magnetic force are preferred of the permanent magnet dimensioned so that the armature in de-energized state of the two excitation coils from the alone given by the springs stable spring position in the direction of the magnet system to which the permanent magnet is assigned, staggered.
  • the main advantage of the actuating device according to the invention is that both excitation coils are from one and the same Control signals of a control circuit can be applied, because that a very simple control circuit is sufficient.
  • the control circuit can, for example, at its output terminals a pulse width modulated voltage signal for Provide the current with its duty cycle can be determined.
  • both magnet systems preferably with an overexcitation current switched (100% DE).
  • This overexcitation current neutralizes the permanent magnet and gives the other magnet system large switching forces.
  • the so-called Holding current reduced or switched back (lower % ED, lower power consumption, less warming).
  • the holding current is dimensioned according to the invention so that the Desired holding force with zero air gap between permanent magnet and magnet system is ensured.
  • Figure 1 is a sectional view through an embodiment an electromagnetic actuator shown.
  • the control device shown in sectional view has a tubular housing 1. Inside the case 1, a control shaft 15 is arranged centrally by two Plain bearings 19a, 19b is guided and with a still to be explained Compensating element 51 cooperates.
  • the staff 15 extends through the entire axial length of the housing 1.
  • a plate-shaped Anchor 17 attached to the stem 15.
  • the anchor 17 is located between two magnet systems and thus in the magnetic Circle of both the left and right magnet systems arranged. Both magnetic systems are after Kind of pot magnets preferably rotationally symmetrical.
  • the magnet system arranged on the left in FIG. 1 exists from a pot-shaped jacket 9, a core 5 and a coil former 7, on which an excitation coil 3 is wound.
  • Between the bottom plate of the jacket 9 and the core 5 is a plate-shaped permanent magnet 71 arranged.
  • the magnetization this permanent magnet 71 is chosen so that the north pole N and south pole S are provided as plate-shaped elements are, the plate levels parallel to the plane of the plate-shaped Permanent magnets 71 are arranged.
  • the separation of The north pole N and south pole S are dashed in Figure 1 in the permanent magnet 71 indicated.
  • the permanent magnet 71 also has a central opening in which an annular element 13 sits. At this Element 13 is supported by a compression spring 11 with one end. This compression spring 11 is arranged coaxially around the control shaft 15. Around this compression spring 11 is the core 5 of the Magnet system. The compression spring 11 is supported with her other End at the plate-shaped anchor 17.
  • This electromagnet has one a coil carrier 27 wound excitation coil 23.
  • the Magnetic system of this electromagnet is in this embodiment also designed rotationally symmetrical and has a one-piece magnetic body 25, which has a central through opening. Through this Through opening extends the stem 15.
  • the Position shaft 15 is guided in the bearing bush 19b, which on the Bottom side of the magnetic body 25 is attached.
  • Compression spring 21 which is on the one hand on the plate-shaped armature 17th and on the other hand on a ring-shaped projecting shoulder supports in the vicinity of the bearing bush 19b.
  • the left front this electromagnet is spaced from the opposite one Surface of the plate-shaped anchor 17.
  • the end of the actuator stem protruding from the bearing bush 19b 15 is connected to a compensating element 51.
  • This Compensating element 51 serves to ensure that even at existing end stop of the part to be moved the anchor plate 17 air gap on the magnetic body 25 of the electromagnet is applied. This measure guarantees a low holding power.
  • the prestressed compression spring 53 in End of stroke position almost constant forces. So that to be moved Part that is articulated in the bore 52, too can perform an arcuate movement is the compensating element 51 on the control shaft 15 via a compensating ring 59 gimbal mounted.
  • Such actuators are ideal where Large actuating forces in the stroke start or stroke end position with a small one Construction volume, small weight and small performance required e.g. for flap adjustments in automotive applications. Of this actuator is also suitable for actuation of elements that require a specific work profile.
  • the two excitation coils 3, 23 are either connected in series or parallel to each other.
  • the row or Parallel connection of the two excitation coils 3, 23 is with output terminals 43, 44 of the control circuit 41 already mentioned in connection.
  • the entire actuator In the position of the armature 17 shown the entire actuator is in a de-energized state. In this de-energized state, the in the left magnet system ensures existing permanent magnet 71 for the armature 17 lies flat against the magnetic body 5, 9 of the left magnet system.
  • the main advantage of this control device is that very simple control option by switching on and off a control signal. A separate control of the two excitation coils 3, 23 is no longer necessary.
  • FIG. 3 shows two different block diagrams, in which the one in connection with FIG explained two excitation coils 3, 23 one after the other (cf. Figure 3 above) and on the other hand connected in parallel are (see FIG. 3 below). These two connected in series or excitation coils 3, 23 connected in parallel with output terminals 43, 44 of a control circuit 41 in connection.
  • This control circuit 41 is shown schematically and contains only one switching device between two Switching states S1, S2 is switchable. In the switch position S1 reaches the control circuit 41 on the input side applied voltage U to the output terminals 43, 44 while with switch position S2 the switch is open and consequently at the output terminals 43, 44 of the control circuit 41 there is no voltage signal. From the illustration in FIG.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Electromagnets (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Seal Device For Vehicle (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Claims (12)

  1. Installation d'actionnement électromagnétique comportant deux systèmes d'aimants écartés l'un de l'autre et ayant chacun une bobine d'excitation (3, 23), systèmes entre lesquels se trouve un induit (17) relié de manière fixe à une tige d'actionnement (15), et serré entre deux ressorts (11, 21) d'action opposée en pouvant être déplacé par les systèmes d'électroaimants dans deux positions de commutation, avec
    un aimant permanent (71) associé à l'un seul des deux systèmes d'aimants,
    les deux bobines d'excitation (3, 23) étant soit branchées en série soit en parallèle et pouvant être reliées aux bornes de branchement (43, 44) d'un circuit de commande (41),
    caractérisée en ce qu'
    aux deux bobines d'excitation (3, 23) branchées de manière définitive en série ou en parallèle, le circuit de commande (41), pour déplacer alternativement l'induit (17) dans la première et dans la seconde position de commutation établit des signaux de commande marche/arrêt (S1, S2),
    le signal de commande (S1) pouvant être abaissé après une première valeur prédéterminée (sur-excitation) à une seconde valeur plus faible (excitation de maintien).
  2. Installation d'actionnement électromagnétique selon la revendication 1,
    caractérisée en ce que
    les ressorts (11, 21) et l'aimant permanent (61) sont dimensionnés pour que l'induit (17), en l'absence de courant dans les deux bobines d'excitation (3, 23), soit déplacé de la position de ressort stable prédéterminée uniquement par les ressorts (11, 21), en direction du système magnétique auquel est associé l'aimant permanent (17).
  3. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 ou 2,
    caractérisée en ce qu'
    un signal de marche (S1) est commandé par une modulation de largeur d'impulsion.
  4. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 3,
    caractérisée en ce que
    l'amplitude et la polarité des signaux de commande (S1) sont choisies pour neutraliser l'effet d'accrochage de l'aimant permanent (71) dans le premier électroaimant.
  5. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 4,
    caractérisée en ce que
    le circuit de commande (41) fournit un signal de commande de branchement (S1) qui après une première valeur prédéterminée (surexcitation) diminue à une seconde valeur plus faible (excitation de maintien).
  6. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 5,
    caractérisée en ce que
    l'induit (17) est en forme de plaque.
  7. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 6,
    caractérisée en ce que
    les deux bobines d'excitation (3, 23) sont de réalisation identique.
  8. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 7,
    caractérisée en ce que
    les deux bobines d'excitation (3, 23) sont différentes.
  9. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 8,
    caractérisée en ce que
    l'aimant permanent (71) est appliqué en surface, de manière parallèle à l'induit (17) mais sur le côté du premier électroaimant, à l'opposé de l'induit (17).
  10. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 9,
    caractérisée en ce que
    les deux pôles (N, S) de l'aimant permanent (71) sont installés l'un à côté de l'autre en forme de plaque et parallèlement au plan de la plaque de l'aimant permanent (71).
  11. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 10,
    caractérisée en ce que
    l'installation d'actionnement est couplée par un élément d'équilibrage (51) à une partie à déplacer et l'élément d'équilibrage (51) permet à l'induit (17) s'il existe une butée de fin de course pour la pièce mobile, la venue en appui sans intervalle du noyau (25) du système d'aimant.
  12. Installation d'actionnement électromagnétique selon l'une quelconque des revendications 1 à 11,
    caractérisée en ce que
    l'élément de compensation (51) prévoit pour une compensation axiale de la course, une compensation de course en forme d'arc pour un mouvement de rotation par un excentrique ou une compensation de course en forme de rotation après conversion d'un mouvement axial en un mouvement de rotation.
EP98100775A 1997-03-24 1998-01-17 Dispositif électromagnétique de positionnement Expired - Lifetime EP0867898B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19712293A DE19712293A1 (de) 1997-03-24 1997-03-24 Elektromagnetisch arbeitende Stelleinrichtung
DE19712293 1997-03-24

Publications (2)

Publication Number Publication Date
EP0867898A1 EP0867898A1 (fr) 1998-09-30
EP0867898B1 true EP0867898B1 (fr) 2002-11-27

Family

ID=7824429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98100775A Expired - Lifetime EP0867898B1 (fr) 1997-03-24 1998-01-17 Dispositif électromagnétique de positionnement

Country Status (5)

Country Link
EP (1) EP0867898B1 (fr)
AT (1) ATE228712T1 (fr)
DE (2) DE19712293A1 (fr)
ES (1) ES2186928T3 (fr)
PT (1) PT867898E (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005039263A1 (de) * 2005-08-19 2007-02-22 Deere & Company, Moline Steuervorrichtung und Verfahren zum Ansteuern eines Aktuators für eine Getriebeschaltstelle

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3835024B2 (ja) * 1998-11-19 2006-10-18 トヨタ自動車株式会社 内燃機関の電磁駆動装置
DE10207828B4 (de) * 2002-02-25 2004-10-07 Technische Universität Dresden Elektromagnetischer Hubmagnet
DE10322881A1 (de) * 2003-05-21 2004-12-16 Bayerische Motoren Werke Ag Elektrischer Ventiltrieb mit Elektro- und Permanentmagneten
DE102007044245A1 (de) * 2007-09-11 2009-04-02 Siemens Ag Magnetisches Antriebssystem für eine Schalteinrichtung sowie Verfahren zur Herstellung eines magnetischen Antriebssystems
DE202009014192U1 (de) * 2009-10-20 2011-03-03 Eto Magnetic Gmbh Monostabile elektromagnetische Aktuatorvorrichtung
EP2339681B1 (fr) * 2009-12-18 2013-09-18 Bayerische Motoren Werke Aktiengesellschaft Actionneur électromagnétique
CN102266633B (zh) * 2010-12-31 2013-08-14 北京谊安医疗***股份有限公司 电磁比例阀和包含该电磁比例阀的呼吸机
DE102011106205A1 (de) 2011-06-07 2012-12-13 Hochschule Bochum Bistabiler Elektrohubmagnet
DE102013102400B4 (de) 2013-03-11 2021-08-26 Alfred Jäger GmbH Elektromagnetische Stellvorrichtung und Kombination von elektromagnetischer Stellvorrichtung und Motorspindel
DE102020109120B4 (de) 2020-04-01 2022-02-03 Alfred Jäger GmbH Elektromagnetische Stellvorrichtung und deren Verwendung
WO2023241760A1 (fr) 2022-06-13 2023-12-21 Alfred Jäger GmbH Dispositif d'actionnement magnétique
DE102022114839A1 (de) 2022-06-13 2023-12-14 Alfred Jäger GmbH Magnetische Stellvorrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE912721C (de) * 1950-10-15 1954-06-03 Siemens Ag Einrichtung zum ruckartigen Hinundherbewegen von Massen
DE3920978A1 (de) * 1989-06-27 1991-01-10 Fev Motorentech Gmbh & Co Kg Elektromagnetisch arbeitende stelleinrichtung
DE3920931A1 (de) * 1989-06-27 1991-01-03 Fev Motorentech Gmbh & Co Kg Elektromagnetisch arbeitende stelleinrichtung
DE3928066A1 (de) * 1989-08-25 1991-02-28 Binder Magnete Vorrichtung zur elektromagnetischen steuerung eines gaswechsel-ventils einer hubkolben-brennkraftmaschine
DE4004876A1 (de) * 1990-02-16 1991-09-26 Ulrich Karrer Elektrisch betaetigte ventilsteuerung fuer periodisch betriebene ventile fuer kraftmaschinen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005039263A1 (de) * 2005-08-19 2007-02-22 Deere & Company, Moline Steuervorrichtung und Verfahren zum Ansteuern eines Aktuators für eine Getriebeschaltstelle
DE102005039263B4 (de) * 2005-08-19 2021-07-08 Deere & Company Steuervorrichtung und Verfahren zum Ansteuern eines Aktuators für eine Getriebeschaltstelle

Also Published As

Publication number Publication date
DE19712293A1 (de) 1998-10-01
ES2186928T3 (es) 2003-05-16
DE59806390D1 (de) 2003-01-09
EP0867898A1 (fr) 1998-09-30
PT867898E (pt) 2003-04-30
ATE228712T1 (de) 2002-12-15

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