EP2936511A1 - Elektromagnetische stellvorrichtung - Google Patents
Elektromagnetische stellvorrichtungInfo
- Publication number
- EP2936511A1 EP2936511A1 EP13798262.5A EP13798262A EP2936511A1 EP 2936511 A1 EP2936511 A1 EP 2936511A1 EP 13798262 A EP13798262 A EP 13798262A EP 2936511 A1 EP2936511 A1 EP 2936511A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- coil winding
- winding
- ohms
- energization
- 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.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 93
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 230000004044 response Effects 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- 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
- H01F2007/1684—Armature position measurement using coils
-
- 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
- H01F2007/185—Monitoring or fail-safe circuits with armature position measurement
Definitions
- the present invention relates to an electromagnetic actuator according to the preamble of the main claim.
- Such a device is known from DE 20 2005 01 1 901 U1 of the Applicant.
- the purpose of the generic technology is to provide a suitable in particular for adjusting the camshaft on a motor vehicle engine actuator whose anchor (plunger) position or movement is detected in a simple manner.
- the energized for driving the anchor means coil is additionally used in its de-energized state during this period, a voltage induced by the armature unit or its movement in the coil voltage tapped as a signal from the coil terminal and suitably subsequently by the detection means is evaluated. It is advantageously achieved by this measure that no additional sensors or detector units are required for the armature detection, which, in addition to corresponding component expenditure, would also require more extensive connection and line infrastructure.
- the coil means provided with the energization for the purpose of the armature movement are increasingly low-resistance (and also have relatively lower inductances), which is made possible by corresponding wire cross-sections and winding or winding numbers of the winding wire used for the coil means.
- a disadvantage of such low-resistance coils is that the signal detected in the non-energized state (“throw-back signal”) is significantly smaller and therefore harder to detect than in the conventional technology.
- Object of the present invention is therefore to provide a generic electromagnetic actuator, which, for example by low-resistance, provided with low numbers of coils coil means is improved in their dynamic properties and has shortened switching times to improve so that nonetheless in the state of non-energization reliable detection the movement or setting position of the anchor means is detectable from a voltage applied to the coil means detection signal.
- the coil means are realized in the form of two separate, but to achieve a two-pole parallel coil windings, of which a first in the above, dynamically advantageous manner for driving the armature unit can be provided with the energization and, relative to the second coil winding, by appropriate design of the Spool wire and / or a reduced number of turns, low impedance is realized.
- the second coil winding designed relative to the first coil winding by appropriate design of the coil wire and / or an increased number of turns high or high resistance, as a sensor or detector winding and is used to generate the detection signal outside the energization (more precisely: the Bestromungszeit) evaluated ,
- the first and the second coil winding is connected in parallel as a two-pole, such that each of the coil windings forms a branch, the respective branch ends together are connected and at these junctions externally (with the power source and the downstream detection means) are connected.
- the two-pole thus created makes it possible to use a connection or plug infrastructure that is already known for the generic technology, without the need for additional connections or lines; Especially in an automotive environment with corresponding resource constraints, this leads to considerable advantages in the practical realization.
- the first coil winding also generates one of the Ankerschul corresponding induction signal, but this is due to the significantly lower number of turns less than the detection signal of the second coil winding, so that corresponding equalizing currents flow, which then no longer give usable signal at the terminals of the two-pole.
- the blocking means may have almost any (electrical) switching means, in particular semiconductor-based implemented, it is favorable according to a preferred embodiment of the invention to realize the further education switching or blocking means as a diode, which in the first (low-resistance) coil winding associated branch of the parallel circuit is looped.
- This diode becomes effective when the second coil winding generates the detection signal (that is to say the induction voltage) in a polarity which is opposite to the polarity of the current supply.
- the detection signal generated therein would then be represented by the diode associated with the first coil winding be blocked and can thus be tapped by the detection means on the dipole and subsequently evaluated.
- this common coil carrier can advantageously be wound along an axial direction of the adjusting device, ie parallel to a direction of movement of the armature unit, first with a coil or winding section realizing the first coil winding, then with a coil section implementing the second coil winding, or else it can the reverse axial sequence can be selected.
- the coil windings adjacent to one another in the radial direction, it being particularly advantageous here to apply the second coil winding to the first coil winding realizing the drive coil so as to be suitable on the shell side;
- Such a configuration is particularly suitable for radially symmetric embodiments of the electromagnetic actuator, in which the coil means, more preferably cylindrical, enclose the armature unit and the core unit and define the axis of movement of the armature unit by its central axis.
- the first coil winding such that an ohmic resistance of ⁇ 20 ohms is formed, more preferably this may be 6 ohms or less (for inductors in the range between approximately 25 mH for coils ⁇ 20) Ohms up to 4 mH and down to 0.8 mH for coils ⁇ 6 ohms). Accordingly, good dynamic properties can be realized.
- the second coil winding with an ohmic resistance above 100 ohms is preferred in particular, a resistor above 400 ohms and ⁇ 1500 ohms, so that a well evaluable detection signal can be generated and, in cooperation with the first coil winding, no significant current division takes place during energization.
- a resistor above 400 ohms and ⁇ 1500 ohms are typical inductances between about 1 H (400 ohm sensor coil) and about 7 H (500 ohms).
- An additional advantage here brings the additionally provided for further training second diode, looped into the second coil winding associated branch: by the first diode (in the branch of the first coil winding) opposite polarity prevents this second diode (realized as a Zener diode) any current flow during energization allows at the same time, in the case of the winding direction or the corresponding contacting which is provided in the opposite way according to the invention, a current flow of the detection signal to the terminals of the dipole.
- the present invention thus achieves a significant improvement in the movement or position detection of anchor means in the context of the generic electromagnetic actuator, with significantly improved dynamic characteristics are achieved and the device is still connected only two poles, in other words, for connection with upstream controllers no additional connections or lines are required.
- Fig. 1 (a), (b), an equivalent circuit of the coil means according to the invention a first embodiment of the invention with only one, the first coil winding associated diode, in the energized state (a) or in the throw-back state (b) with induced back-off voltage and de-energized main coil;
- 3 to 5 are schematic longitudinal sectional views of the electromagnetic actuator with possible geometrical-constructive implementation variants of the first and second coil winding.
- Figs. 3 to 5 each as half a longitudinal section through a radially symmetrically realized electromagnetic actuator according to a first preferred embodiment, three variants, as the first and second coil winding may be provided adjacent to each other: one of an elongated anchor tappet 10, a Disc-shaped, axially magnetized permanent magnet 12 and a pair on both sides of the permanent magnet disc 12 provided Flußleitusionn 14, 16 formed anchor unit is along an axial Direction 18 (as far as the symmetry axis of FIG. 3 to 5) and guided relative to a stationary core unit 20 movable.
- the armature unit cooperates with an engagement-side plunger 22, which is held by the permanent magnetic adhesive force of the permanent magnet 12 at a front end of the armature plunger 12 releasably adhering.
- engagement end 24 of the engagement ram for cooperation with a (not shown) control partner, in particular a parking cam camshaft adjustment for an internal combustion engine is formed, and for this purpose emerges from a front-side housing surface 26 of a unit surrounding the cylindrical housing 28 out.
- a bottom plate 30 and a frontal flux guide 32 close magnetic circuits over the housing, wherein in the arrangement shown (and in otherwise known manner) in response to the energization of a first coil winding 34, a repulsive force between the core unit 20 and the permanent magnet assembly 14th , 12, 16, which drives the anchor unit and thus the attaching armature plunger 22 from its rest position shown in FIGS. 3 to 5 into an engagement position (in the figure direction downwards), so that the engagement end 24 can cooperate with the adjusting groove.
- the embodiment shown has, adjacent to the first coil winding 34, a second coil winding 36, which in the embodiment of FIG. 3 is axially adjacent to the coil winding 34 in the direction of the permanent magnet unit.
- a second coil winding 36 which acts as a detector coil (sensor) for the armature movement in the de-energized state, relatively close to the permanent magnet unit 14, 12, 16, so that high detection quality is ensured.
- FIG. 3 As a variant of the geometrical configuration of FIG. 3, FIG.
- FIG. 4 shows an alternative arrangement of the second coil winding adjacent to the first coil winding (with the same reference numerals for identical or equivalent components and functional groups);
- the second coil winding 36 in turn axially adjacent, on the permanent magnet unit opposite end of the first coil unit 36; This variant is particularly easy to contact.
- FIG. 5 shows the second coil winding 40 radially outwardly lying and wound on the first coil winding 34 and thus advantageously allows additional axial space.
- a coil holder (not shown), typically realized from a suitable, magnetically non-conductive plastic injection molding material, carries both coil windings in the respective configurations shown.
- FIGS. 1 and 2 illustrate the wiring and configuration of the respective coil windings as mutually alternative embodiments.
- FIG. 1 shows in the diagram how the first coil winding (represented by its coil resistor Rhiaupt as well as its inductance L HaU pt) forms a first branch of a dipole , to which a first diode D1 is assigned : the intended for supplying current with the purpose of driving the armature unit first winding 34 is energized with a polarity that the voltage drop U Ha upt along the flow direction of the diode D1 passes, in other words, during energization D1 conducts.
- FIG. 1 further illustrates a second, the second coil winding 36 (or 40) corresponding branch in the equivalent circuit diagram shown, said second coil winding is shown as a substitute by their ohmic coil resistance Rsensor or their inductance L Sen sor-
- the sense of winding of this coil winding is set up so that one of the lighting current Uhiaupt opposite induction or detector voltage Usensor (induced by the armature movement in the non-energized state) is formed, corresponding to the arrow directions in FIG. Is accessed on the two pole by the two terminals A1, A2, so far comparable to a conventional two-pole connection to a control unit.
- the current flow through the branch corresponding to the coil winding 36 takes place along the arrow direction l Sen sor- Fig.
- FIG. 1 shows the BestromungsSullivan the main coil 34 (approximately in a constructive implementation of one of the variants of Figures 3 to 5). it conducts the diode D1.
- the windings 34 and 36 are configured relative to one another such that an ohmic resistance of the winding 36 (with about 400 to 1500 ohms) is significantly greater than an ohmic resistance of the first winding 34 (with about 0.1 to 6 Ohms), the current flow in the branch 36 during energization is negligible.
- a second diode D2 assigns a second diode D2 to the branch of the second coil winding 36, which during the energizing operation (current flow through the first coil winding). blocks, so that no current flow through the serving as a sensor coil second coil winding.
- D2 opens, so that in this respect the detection signal (with blocked D1) can flow and in turn can be tapped off via A1, A2.
- the second diode D2 is implemented as a Zener diode and designed so that it blocks Uschaiten in the Bestromungs- or switching voltage, but has a breakdown voltage which is lower than the induced voltage Usensor- Thus, as symbolized in FIG.
- the diode D1 prevents analogous to the first embodiment of Figure 1 that the discard signal U Se nsor on the main coil 34 is reduced; the induced reverse current of the main coil is blocked.
- Typical implementation variants of the windings with a setting stroke of 3 mm to 6 mm, a typical setting force in the range of 3 N to 15 N and a typical outer diameter of the housing shell of about 20 mm are between 50 and 500 turns for the first coil winding and between approx. 800 and about 8,000 windings for the second winding, resulting in typical inductances of 0.8 mH to 25 mH and 1 H to 70 H, respectively.
- FIGS. 3 to 5 show a bistable device; It can be seen that in an extended (engaged) state of the armature unit, the permanent magnet unit 14, 12, 16 at the front end housing end 26, 32 holds (by permanent magnet force), even in a de-energized state of the coil means. A typical provision then takes place in a manner customary for the camshaft adjustment by the action of the adjusting groove cooperating with the engaging ram 22. It is precisely such a bistability preferred for further development that realizes the advantages of the present invention of reliably detecting the movement or setting behavior of the armature unit by means of the second coil winding.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Valve Device For Special Equipments (AREA)
- Electromagnets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210113056 DE102012113056B4 (de) | 2012-12-21 | 2012-12-21 | Elektromagnetische Stellvorrichtung |
PCT/EP2013/072954 WO2014095144A1 (de) | 2012-12-21 | 2013-11-04 | Elektromagnetische stellvorrichtung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2936511A1 true EP2936511A1 (de) | 2015-10-28 |
EP2936511B1 EP2936511B1 (de) | 2019-01-09 |
Family
ID=49679483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13798262.5A Active EP2936511B1 (de) | 2012-12-21 | 2013-11-04 | Elektromagnetische stellvorrichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2936511B1 (de) |
DE (1) | DE102012113056B4 (de) |
WO (1) | WO2014095144A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2746564B1 (de) * | 2012-12-21 | 2016-04-27 | Continental Automotive GmbH | Elektromagnetische Aktuatoranordnung für ein Flüssigkeitseinspritzventil und Verfahren für den Betrieb eines Flüssigkeitseinspritzventils |
DE102014113500A1 (de) * | 2014-09-18 | 2016-03-24 | Eto Magnetic Gmbh | Bistabile elektromagnetische Aktorvorrichtung |
EP3016117B1 (de) | 2014-10-31 | 2017-12-06 | Husco Automotive Holdings LLC | Druckstiftaktuatorvorrichtung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2019345C3 (de) * | 1970-04-22 | 1982-12-09 | Voith Getriebe Kg, 7920 Heidenheim | Anordnung zum Beeinflussen des Erregerstromes eines als Antrieb für Mangetventile verwendeten Gleichstrom-Elektromagneten |
DE3150814A1 (de) * | 1981-12-22 | 1983-06-30 | Herion-Werke Kg, 7012 Fellbach | Vorrichtung zur beruehrungslosen bestimmung der schaltstellung des ankers eines elektromagneten |
DE19518056B4 (de) * | 1995-05-17 | 2005-04-07 | Fev Motorentechnik Gmbh | Einrichtung zur Steuerung der Ankerbewegung einer elektromagnetischen Schaltanordnung und Verfahren zur Ansteuerung |
DE19726562A1 (de) * | 1997-06-23 | 1998-12-24 | Abb Research Ltd | Schaltungsanordnung zur Steuerung eines bistabilen magnetischen Aktuators |
DE19913050A1 (de) * | 1999-03-23 | 2000-09-28 | Fev Motorentech Gmbh | Verfahren zur Erfassung der Position und/oder Bewegungsgeschwindigkeit eines zwischen zwei Schaltstellungen hin und her bewegbaren Stellelements |
DE202005011901U1 (de) * | 2005-07-26 | 2006-11-30 | Eto Magnetic Kg | Elektromagnetische Stellvorrichtung |
US8882492B2 (en) * | 2008-10-02 | 2014-11-11 | Coprecitec, S.L. | Control systems for the ignition of a gas burner |
JP5488103B2 (ja) * | 2010-03-25 | 2014-05-14 | ヤマハ株式会社 | 電磁アクチュエータの変位位置検出装置 |
DE102010062971A1 (de) * | 2010-12-13 | 2012-06-14 | Robert Bosch Gmbh | Elektromagnetische Betätigungseinrichtung mit einem Anker |
-
2012
- 2012-12-21 DE DE201210113056 patent/DE102012113056B4/de active Active
-
2013
- 2013-11-04 EP EP13798262.5A patent/EP2936511B1/de active Active
- 2013-11-04 WO PCT/EP2013/072954 patent/WO2014095144A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2014095144A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014095144A1 (de) | 2014-06-26 |
EP2936511B1 (de) | 2019-01-09 |
DE102012113056A1 (de) | 2014-06-26 |
DE102012113056B4 (de) | 2014-07-24 |
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