EP1875480B1 - Bistabiler und polarisierter elektromagnetischer aktuator zur schnellen betätigung - Google Patents
Bistabiler und polarisierter elektromagnetischer aktuator zur schnellen betätigung Download PDFInfo
- Publication number
- EP1875480B1 EP1875480B1 EP06743652A EP06743652A EP1875480B1 EP 1875480 B1 EP1875480 B1 EP 1875480B1 EP 06743652 A EP06743652 A EP 06743652A EP 06743652 A EP06743652 A EP 06743652A EP 1875480 B1 EP1875480 B1 EP 1875480B1
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- EP
- European Patent Office
- Prior art keywords
- electromagnetic actuator
- actuator according
- mobile
- statoric
- assembly
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
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- 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
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- 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
- H01F7/13—Electromagnets; Actuators including electromagnets with armatures characterised by pulling-force characteristics
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/2068—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements
- F02D2041/2079—Output circuits, e.g. for controlling currents in command coils characterised by the circuit design or special circuit elements the circuit having several coils acting on the same anchor
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- 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
- H01F2007/1692—Electromagnets or actuators with two coils
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- 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
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- 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
- H01F7/14—Pivoting armatures
Definitions
- the present invention relates to the field of polarized electromagnetic actuators, more particularly intended for applications requiring short travel times on a significant stroke, and, for example, the electrical actuation of the valves of an internal combustion engine.
- An actuator according to this example comprises two fixed electromagnets disposed on either side of a movable ferromagnetic armature capable of coming into contact with one or the other of the electromagnets according to the supply of two coils each mounted on one of the stators. electromagnets. Return springs are also distributed on either side of the electromagnetic system ensuring a position of balance without current in the middle of the total travel of the mobile armature.
- these solutions have several defects. For example, they require a holding current when the actuator is in the extreme position (for example, a closed valve). In addition, they require an initialization phase during startup of the system, intended to move the mobile mass from a central position to the high position and offer limited controllability possibilities.
- An actuator according to this example comprises two fixed electromagnets, at least one of which is biased by a pair of appropriately placed magnets disposed on either side of a movable ferromagnetic member that can come into contact with the first electromagnet or the second electromagnet according to the selected pilot sequences.
- the present example makes it possible to electrically modulate the currentless attraction forces generated by the magnets through the electromagnets on the movable member but also to reduce the power consumption by stable positions without current.
- each of the magnets interacts only with an electromagnet, which induces a non-optimal use of the magnetic flux generated by the magnets. It is the same for coils that do not offer optimal cooperative use with the two polarized electromagnets.
- the object of the present invention is to optimize the efficiency of the magnets implanted in the polarized electromagnetic structure and to propose an optimized and simplified control mode.
- the actuator according to the invention has a single fixed stator part judiciously polarized by at least one permanent magnet and associated with at least one coil, and a movable ferromagnetic part composed of two ferromagnetic reinforcements integral with the same movable element. and disposed on either side of the stator.
- the electromagnetic actuator comprises a first stable position without current when the so-called "upper” armature of the movable part is in contact with the upper part of the stator thereby defining a first remarkable magnetic circuit associated with a first preferential flux path.
- the electromagnetic actuator comprises a second stable position without current when the "lower" armature of the movable part is in contact with the lower part of the stator thus defining a second remarkable magnetic circuit associated with a second path of preferential flow.
- the moving part When the moving part is in the middle position with respect to the stator part, the currentless magnetic flux divides equally between the two remarkable magnetic circuits.
- the moving mass is therefore in a position of unstable equilibrium.
- the magnet cooperates fully (near leaks) with the moving part at the end of the stroke.
- the same magnet cooperates alternately with one or other of the ferromagnetic parts at the end of the stroke.
- the magnet cooperates "totally" with the moving part at the end of the stroke, then "totally” with the other moving part.
- this type of structure has the particularity of producing a very large power without current in each of the stable positions without current at the end of the race.
- this type of actuator has the particularity of having a relatively low force over a large part of its travel, as shown by the Figures 1 & 2 .
- the counter-electromotive force exerted on the moving moving part is greatly reduced over most of the stroke.
- the fixed part is formed by a ferromagnetic core surrounded by a transversely magnetized thin magnet, said core being further surrounded by at least one coaxial electrical coil with the magnet permanent, said fixed part further comprising an outer yoke surrounding said permanent magnet and said fixed coil to form polar horns adapted to cooperate magnetically with one or the other of the ferromagnetic armatures of the movable part.
- the stator assembly has a rectangular section.
- the stator assembly has a circular section.
- the moving assembly is constituted by an axis passing through the stator assembly and supporting at least one ferromagnetic armature having a section corresponding to the section of the yoke of the stator part.
- the electromagnetic actuator has two sets of independently connected excitation coils.
- each of the outstanding magnetic circuits is associated with an excitation coil that is suitably connected (in series or in parallel) with its neighbor, thereby defining a single electrical phase.
- the arrangement of the coils in the electrical phase is realized in such a way that the magnetic flux generated by the first coil is withdrawn from the current-free flux of the first remarkable magnetic circuit while the magnetic flux generated by the second coil is added to the flow without current of the second magnetic circuit remarkable.
- the actuator can be controlled using a single bipolar current.
- the actuator according to this preferred variant is single-phase and traversed by a current bipolar. This also makes it possible to reduce the number of power transistors and the cost of the electronics (at most 4 transistors).
- the current supplying the electrical phase of the actuator can be modulated, and this without necessarily having to change its polarity, in order to slow down or accelerate the movable member during its course from one end of the race to the next. the other. It has a better controllability of the actuator while maintaining a good current dynamics.
- This control mode makes it possible to set up a "soft landing” strategy and therefore drastically reduce the noise caused by the landing of the mobile part on the stator part.
- This type of actuator also has the particularity of grouping at its center the stator part, namely a ferromagnetic part comprising one or more permanent magnets but also one or more coils. This specificity makes it possible to concentrate the magnetic excitation fluxes in a localized and controlled zone. This is a particularity that can be exploited when integrating into at least one of the magnetic circuits of a remarkable remarkable position sensor, for example Hall effect or inductive type.
- the actuator comprises an elastic return system exerting a force on each of the ends of the movable member intended to keep the latter close to its mid-race and conferring on the actuator thus designated the mass system quality.
- -spring The above-defined actuator, with judiciously sized elastic elements, has two stable steady state of equilibrium positions and an increased dynamic of displacement.
- the actuator comprises two compression springs each exerting a balanced force on each of the two moving armatures.
- the movable armatures can advantageously be used not as a single magnetic member but also as a mechanical stop for the springs.
- the springs are placed on the same side of the movable member and each separated by a third part connected to the movable member.
- the elastic return system described here gives the mobile unit a maximum speed in the middle of the race, which is high over most of the race and almost zero in the vicinity of the ends of the race, so it should be noted that is quite adapted to the principle of the actuator described here. Indeed, the force against electro-motor being by nature proportional to the speed of the moving part and of a nature to slow down, it being reduced over a major part of the race or almost zero when the race becomes relatively consistent it then makes it possible to reduce as much as possible the losses likely to penalize the dynamics of the system.
- the structure has an extrusive geometric invariance and thus advantageously makes it possible to produce the magnetic circuit of the actuator in a soft laminated magnetic material.
- the structure may be polarized by two flat magnets placed symmetrically with respect to the main axis of the actuator.
- the actuator can be defined axisymmetrically with the aid of a single magnetic ring substantially radially magnetized.
- the electromagnetic actuator comprises a ring magnet axis of revolution collinear with the main axis of the actuator and magnetized substantially radially.
- the magnets distribute a magnetic field in the stator which then loops back into the air around the stator poles.
- the magnetic flux generated by the magnets describes a magnetic circuit that can be advantageously used during a magnetization phase. Therefore, it can be advantageously when the magnets are already integrated in the magnetic structure. In this way, it saves a certain time on the magnetization phase since a single polarized stator is required but also saves time on the assembly phases which are therefore simplified by handling magnets not magnetized.
- This type of actuator has a useful travel substantially equal to the sum of the air gap separating the so-called “lower” armature from the lower part of the stator assembly and the air gap separating the "upper” armature from the upper part of the stator assembly. According to the manufacturing and assembly constraints, design constraints and integration constraints in a complete system, the mechanical stops defining the ends of races will have to be adapted.
- the mechanical stops of start and end of stroke will be realized by the direct contact of the ferromagnetic armatures on the ferromagnetic stator part.
- the mechanical stops will be achieved by the addition of a non-magnetic third located between the ferromagnetic armatures and the ferromagnetic stator part.
- the gluing gap can be adjusted to adjust the effort of maintaining stable positions without current.
- these third parties may for example be made by the mechanical addition of a part or by a deposit of material.
- the stator and / or mobile parts have a non-magnetic portion ensuring a residual air gap in the race ends.
- the mechanical stops may be subject to a positional offset and no longer be made directly between the armatures and the stator assembly.
- the mechanical stops are made between one or more members connected to the movable part and one or more members connected to the stator part.
- this device also allows adjustment of the useful stroke and the holding force without current at stable positions at the stroke ends.
- the mobile part is articulated about an axis of rotation substantially located in the center of the median plane of the structure.
- the two armatures are integral with a rotary axis and come into contact with the stator part by a beveling of the magnetic poles of the stator part ( Figure 11 ) or rotor.
- the angle of the bevels makes it possible to size the angular stroke of the actuator according to the needs of the designer.
- the magnetic structure remains substantially the same as for a linear actuation.
- the present variant can also be associated with an elastic return system, using for example, and not exclusively, compression springs or spiral springs.
- the electromagnetic actuator comprises at least one position sensor integrated in the stator structure.
- the electromagnetic actuator comprises at least one position sensor integrated in the mobile structure.
- the current and / or position information allows optimized control, and in particular minimization of the impact speed at the end of travel.
- the actuator presented by way of non-limiting example in figure 3 comprises a stator part consisting of parts of soft ferromagnetic material (1,3).
- the piece (1) forms a core.
- the piece (3) forms a breech.
- This set defines a stator magnetic circuit polarized by two flat magnets (3a, 3b) introduced into the central part of the structure. These are magnetized substantially symmetrically with respect to the plane perpendicular to the cutting plane of the figure 3 and passing through the main axis of the actuator.
- the yoke (3) extends on either side of the core (1).
- the parts constituting the stator part may be, for example, made of soft magnetic steel laminated iron type silicon or soft magnetic steel sintered iron phosphor type to limit losses by eddy currents.
- a movable ferromagnetic part consists of 2 armatures (2a, 2b) distributed on either side of the stator part, and integral with a non-magnetic axis (11), made of non-magnetic stainless steel for example.
- the figure 14 gives a representation of the actuator in the middle of the race. In this position, the distribution of the field lines without current through the ferromagnetic structure is symmetrical with respect to the plane perpendicular to the plane of section and parallel to the axis. This position of unstable magnetic equilibrium is supported by the addition of two springs (7a, 7b) which are placed and prestressed so that the middle position of the race is mechanically stable without current.
- a fixed part (9a, 9b) which is the symbolic representation of a non-magnetic frame in which the present invention.
- the frame could be for example the motor housing and the shaft (11) would be integral with the valve to move.
- the movable moving part is integral with the axis (11) and is linearly guided by guiding devices that the example designates (10) as fitted bearings.
- FIGs 9 and 10 represent the two positions of stroke of the actuator.
- figure 10 shows the low extremal position of the movable part and in this case the upper armature (2a) is in contact, or not far from the contact, the stator part. This stable position is maintained thanks to the very high current-free force in this contact or quasi-contact position.
- the figure 8 is then the pendant of the figure 9 but this time for an axis in the high position and a low reinforcement (2b) in contact with the stator part.
- Two coils (5a, 5b) are placed in two housings provided for this purpose.
- a first coil (5a) is wound on a pole portion (13) of the stator so that the winding axis is collinear with that of the movement.
- a second coil (5b) is installed on a second polar pole portion (14).
- the two coils are preferably connected together (in series or in parallel) to form a single phase, so that when a current flows in an arbitrarily positive direction in the phase, the magnetic flux generated by the electric current is added to the currentless flux generated by the magnets in the pole portion 13 and retract the flow without current generated by the magnets in the pole portion 14.
- an arbitrarily negative current in the phase will add the flow with current and without current in the polar part 14 but retract into the pole portion 13.
- a negative current generates a magnetic flux that comes to evade the flow without current.
- the holding force without current is amputated by an amount directly related to the intensity of the current flowing in the electrical phase. In doing so, it will correspond to a value of electric current allowing the restoring force generated by the spring system to take precedence over the holding force without current.
- the movable member will therefore leave this stable equilibrium position (13) without current to quickly gain speed and direct towards the other end of the race (14) and its second stable equilibrium position.
- the current flowing in the phase then becomes motor since the latter generates a magnetic flux to add to the flow without current on the appendix Polar 14.
- the overall speed of the movable member is then related to the stiffness of the springs, but also to the current flowing through the electrical phase.
- the current can cancel without the moving part leaving its second position of steady equilibrium without current (14).
- the race is made in the other direction.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Claims (28)
- Elektromagnetischer Betätiger, der aus einer mobilen Struktur, einer festen ferromagnetischen Statorstruktur (1, 3) mit wenigstens einer elektrischen Erregerspule (5a, 5b) und wenigstens einem Dauermagneten (3) gebildet wird, der zwei stabile Ausgleichspositionen ohne Strom an seinen Hubenden besitzt, dadurch gekennzeichnet, dass die mobile Struktur zwei unterschiedliche ferromagnetische Armaturen (2a, 2b) aufweist, die auf jeder Seite der Statorstruktur verteilt sind und jeweils mit der genannten Statorstruktur (1, 3) wenigstens einen Magnetkreislauf bilden und dass der Dauermagnet (3) geeignet ist, magnetisch mit dem einen und dem anderen der mobilen ferromagnetischen Teile (2a, 2b) in einer stabilen Ausgleichsposition ohne Strom am Hubende zusammenzuwirken.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass der feste Teil durch einen ferromagnetischen Kern (1) gebildet wird, der von einem dünnen, transversal magnetisierten Magneten (3) umgeben wird, wobei der genannte Kern darüber hinaus von wenigstens einer mit dem Dauermagneten koaxialen elektrischen Spule (5) umgeben wird, wobei der genannte feste Teil darüber hinaus ein externes Joch (3) umfasst, das den genannten Dauermagneten und die genannte feste Spule umgibt, um Polschutzkanten zu bilden, die geeignet sind, magnetisch mit der einen oder der anderen ferromagnetischen Armierung des mobilen Teils zusammenzuwirken.
- Elektromagnetischer Betätiger gemäß Anspruch 2, dadurch gekennzeichnet, dass der Statorteil zwei elektrische Spulen (5a, 5b) umfasst, die auf jeder Seite des Dauermagneten angeordnet sind.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Statorstruktur einen rechteckigen Querschnitt aufweist.
- Elektromagnetischer Betätiger gemäß Anspruch 1 bis 3, dadurch gekennzeichnet, dass die Statorstruktur einen kreisförmigen Querschnitt aufweist.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die mobile Struktur durch eine Achse (11) gebildet wird, die die Statorstruktur durchquert und wenigstens eine ferromagnetische Armierung (2a, 2b) trägt, die einen Querschnitt aufweist, der dem Querschnitt des Jochs des Statorteils entspricht.
- Elektromagnetischer Betätiger gemäß dem vorherigen Anspruch, dadurch gekennzeichnet, dass die mobile Struktur durch eine Achse (11) gebildet wird, die die Statorstruktur durchquert und zwei ferromagnetische Armierungen durchquert, die auf jeder Seite des Statorteils angeordnet sind.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die mobile Struktur sich linear verschiebt.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass er einphasig ist.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass der mobile Teil eine rotierende Bewegung hat.
- Elektromagnetischer Betätiger gemäß Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass er wenigstens zwei Erregerspulen (5a, 5b) aufweist, die in Serie geschaltet sind.
- Elektromagnetischer Betätiger gemäß Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass er wenigstens zwei Erregerspulen (5a, 5b) aufweist, die parallel geschaltet sind.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass er zwei Sätze von Erregerspulen aufweist, die unabhängig voneinander geschaltet sind.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die mobile Struktur einem elastischen System (7) zugeordnet ist, das eine Kraft ausübt, welche dazu tendiert, die mobile Struktur in der Nähe der Mitte ihres Hubs zu halten.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass das elastische System aus zwei Kompressionsfedern (7a, 7b) gebildet wird, die jeweils eine deutlich äquivalente Kraft auf jede der zwei mobilen Armierungen ausüben, welche mechanische Endanschläge für die Federn bilden.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Federn (7a, 7b) auf einer und derselben Seite des Statorteils platziert sind und durch ein zusätzliches mechanisches Teil getrennt werden, das auf der Achse des mobilen Teils angebracht ist.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass die Struktur zwei flache Magnete (3a, 3b) umfasst, die deutlich symmetrisch im Verhältnis zu einer mittleren Ebene angeordnet ist, die die Verschiebungsachse des mobilen Teils enthält.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass die Struktur einen Ringmagneten mit Revolutionsachse umfasst, der kolinear zur Hauptachse des Betätigers und deutlich radial magnetisiert ist.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass der Statorteil geschichtet ist.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass die eine oder die andere Armierung (2a, 2b) in den Endpositionen des Hubs direkt mit dem Statorteil in Kontakt kommt.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass die Stator- und / oder mobilen Teile einen amagnetischen Teil aufweisen, der einen Restspalt in den Enden des Hubs garantiert.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass in den Endpositionen des Hubs ein Restspalt zwischen der Armierung und dem Statorteil verbleibt, wobei der Kontakt zwischen einem Element des mobilen Teils und einem Element des Gestells (9a, 9b) erfolgt, mit dem der Statorteil fest verbunden ist.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass die Modulation des Stroms in wenigstens einer der Phasen eine Minimierung der Aufprallgeschwindigkeit am Ende des Hubs erlaubt.
- Elektromagnetischer Betätiger gemäß Anspruch 1, dadurch gekennzeichnet, dass er wenigstens einem Sensor zugeordnet ist, der die Position des mobilen Teils feststellt.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass er wenigstens einen in die Statorstruktur integrierten Positionssensor umfasst.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass er wenigstens einen in die mobile Struktur integrierten Positionssensor umfasst.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass er wenigstens einem Mittel zugeordnet ist, das die Kenntnis des Stroms in wenigstens einer seiner Phasen ermöglicht.
- Elektromagnetischer Betätiger gemäß einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Informationen über den Strom und / oder die Position eine optimierte Steuerung und insbesondere eine Minimierung der Aufprallgeschwindigkeit am Ende des Hubs ermöglichen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0503436A FR2884349B1 (fr) | 2005-04-06 | 2005-04-06 | Actionneur electromagnetique polarise bistable a actionnement rapide |
PCT/FR2006/000768 WO2006106240A2 (fr) | 2005-04-06 | 2006-04-06 | Actionneur electromagnetique polarise bistable a actionnement rapide |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1875480A2 EP1875480A2 (de) | 2008-01-09 |
EP1875480B1 true EP1875480B1 (de) | 2009-07-08 |
Family
ID=35809704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06743652A Active EP1875480B1 (de) | 2005-04-06 | 2006-04-06 | Bistabiler und polarisierter elektromagnetischer aktuator zur schnellen betätigung |
Country Status (6)
Country | Link |
---|---|
US (1) | US7898122B2 (de) |
EP (1) | EP1875480B1 (de) |
JP (2) | JP2008535472A (de) |
DE (1) | DE602006007696D1 (de) |
FR (1) | FR2884349B1 (de) |
WO (1) | WO2006106240A2 (de) |
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US7920129B2 (en) | 2007-01-03 | 2011-04-05 | Apple Inc. | Double-sided touch-sensitive panel with shield and drive combined layer |
US20090174676A1 (en) | 2008-01-04 | 2009-07-09 | Apple Inc. | Motion component dominance factors for motion locking of touch sensor data |
FR2936307B1 (fr) | 2008-09-24 | 2010-09-17 | Moving Magnet Tech Mmt | Capteur de position lineaire ou rotatifa aimant permanent pour la detection d'une cible ferromagnetique |
FR2937722B1 (fr) | 2008-10-24 | 2010-11-26 | Moving Magnet Tech Mmt | Capteur de position magnetique a mesure de direction de champ et a collecteur de flux |
FR2947902B1 (fr) | 2009-07-07 | 2011-07-22 | Moving Magnet Technologies M M T | Capteur de position absolue et multi-periodique |
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-
2005
- 2005-04-06 FR FR0503436A patent/FR2884349B1/fr not_active Expired - Fee Related
-
2006
- 2006-04-06 JP JP2008504807A patent/JP2008535472A/ja not_active Withdrawn
- 2006-04-06 WO PCT/FR2006/000768 patent/WO2006106240A2/fr active Application Filing
- 2006-04-06 EP EP06743652A patent/EP1875480B1/de active Active
- 2006-04-06 DE DE602006007696T patent/DE602006007696D1/de active Active
- 2006-04-06 US US11/910,172 patent/US7898122B2/en not_active Expired - Fee Related
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2013
- 2013-03-06 JP JP2013043896A patent/JP5735564B2/ja not_active Expired - Fee Related
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FR2884349A1 (fr) | 2006-10-13 |
FR2884349B1 (fr) | 2007-05-18 |
JP5735564B2 (ja) | 2015-06-17 |
JP2008535472A (ja) | 2008-08-28 |
JP2013128410A (ja) | 2013-06-27 |
DE602006007696D1 (de) | 2009-08-20 |
US7898122B2 (en) | 2011-03-01 |
WO2006106240A3 (fr) | 2006-12-28 |
WO2006106240A2 (fr) | 2006-10-12 |
EP1875480A2 (de) | 2008-01-09 |
US20080284261A1 (en) | 2008-11-20 |
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