EP3871238A1 - Actionneur bistable unipolaire de type balistique - Google Patents
Actionneur bistable unipolaire de type balistiqueInfo
- Publication number
- EP3871238A1 EP3871238A1 EP19808628.2A EP19808628A EP3871238A1 EP 3871238 A1 EP3871238 A1 EP 3871238A1 EP 19808628 A EP19808628 A EP 19808628A EP 3871238 A1 EP3871238 A1 EP 3871238A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coil
- mass
- actuator according
- bistable actuator
- magnet
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 50
- 230000004907 flux Effects 0.000 claims abstract description 35
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 20
- 230000008859 change Effects 0.000 claims abstract description 5
- 239000003302 ferromagnetic material Substances 0.000 claims description 5
- 230000005465 channeling Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 230000005415 magnetization Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000004804 winding Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000418 atomic force spectrum Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 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
- H01F7/121—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
-
- 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
-
- 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
- H01F7/1607—Armatures entering the winding
- H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
-
- 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
-
- 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
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1872—Bistable or bidirectional current devices
-
- 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
- H01F2007/1669—Armatures actuated by current pulse, e.g. bistable actuators
-
- 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
Definitions
- the present invention relates to the field of actuators having two stable positions in the absence of current.
- Electromagnetic actuators are generally produced in a monostable manner, that is to say that the magnetic armature of the actuator - when it is not supplied with energy - has a single stable position without current.
- This stable position is generally determined by the return force of a spring, while the transfer to the other extreme position on the stroke, called the switched position, is carried out by feeding the magnetic coil or the excitation winding of the electromagnet, according to a so-called "unipolar" power supply, that is to say which only needs one direction of circulation of the electric current.
- This can be done with rudimentary, economical and easily accessible electronics, especially in an automotive electrical network.
- the arrangement of the coils in the electrical phase is carried out in this known solution in such a way that the magnetic flux generated by the first coil is cut off from the currentless flow of the first remarkable magnetic circuit while the magnetic flux generated by the second coil is added to the currentless flow of the second remarkable magnetic circuit.
- the actuator can be controlled using a bipolar current. The actuator is therefore single-phase and traversed by a bipolar current.
- Such an actuator does have two stable positions without current, but requires reversing the direction of the control current to pass from one position to another, which implies the use of electronic circuits implementing several transistors power.
- actuators operating with a unipolar supply and achieving two stable positions, for example as presented in application US20020149456 or, more recently, application DE102014216274. These requests address in particular the general problem of obtaining two stable positions without current consumption, while keeping a simple unipolar supply and retaining an electric actuator of the solenoid type accepting any direction of current in its coil but producing only a unidirectional force in each half of the stroke. Therefore, the control of these actuators must be done in a ballistic manner, that is to say by imparting a force limited in time and by counting on the kinetic energy transferred to the mobile to reach the opposite stable position.
- a first drawback lies in the difficult assembly of the actuators and in particular the difficult indexing necessary between the solenoid type actuator on the one hand and the mechanical stability members (springs and / or balls) on the other hand . If we consider small strokes, typically a few tenths of a millimeter to a few millimeters, an indexing error between the movable member and the mechanical stability members implies for the actuator an asymmetry which can prevent ballistic functionality. If we imagine a realization in industrial production, incorporating manufacturing tolerances, the costs necessary to ensure these fine tolerances can prove to be prohibitive and minimize the advantage in using such actuators.
- One of the objects of the invention is thus to propose an actuator which always meets the need for carrying out a bidirectional movement while keeping two stable end-of-travel positions and by using a single power supply of the unipolar type, while notably improving the solutions. of the prior art, by a more compact solution, more integrated and less sensitive to assembly tolerances.
- Another object of the invention is to propose, thanks to the judicious integration of at least one permanent magnet, an actuator whose functionalities for maintaining a stable position and for leaving a stable position are achieved at least in part by said permanent magnet.
- the invention relates, in its most general sense, to an actuator for controlling the movement of a member between two stable positions without current at these stroke ends, with an electrical command of the pulse type. without change of polarity_for the passage from one stable position to the other stable position, comprising a ferromagnetic moving mass, a stator comprising at least one coil of wires controlled electrically and fixed relative to the moving mass, at least two ferromagnetic poles fixed relative to said mobile mass and on either side of said mobile mass, characterized in that it comprises at least one magnet permanent attracting said mobile mass in order to achieve the two stable positions, in that said mobile mass defines with said ferromagnetic poles at least two variable air gaps during the movement of said mobile mass, in that said electrical control controls said at least one coil of generating a magnetic flux in a single direction (one-way / unidirectional), in that said moving mass, said at least one coil, said ferromagnetic poles and said at least one magnet constitute a magnetic circuit, in which the magnetic
- the actuator comprises two stops limiting the movement of said moving mass, said stops being made of a soft ferromagnetic material, channeling the magnetic flux of said magnet and of said coil.
- Said at least two air gaps are preferably arranged symmetrically with respect to the middle of said coil when the moving mass is centered on its stroke.
- the actuator is associated with an electronic circuit generating, for the change of position of said movable mass from any one of the two stable positions towards the opposite stable position, an electrical pulse supplying said coil , with a constant polarity and a duration less than the travel time of said movable assembly between its original position and its opposite position.
- the actuator comprises two coaxial coils connected together and producing magnetic fluxes in opposite directions.
- said magnet is integral with the moving part or the stator.
- the actuator further includes an electronic circuit controlling the duration of the electrical pulse from a table depending on the voltage of the power source and / or a table depending on the temperature. ambient.
- the electrical pulse duration can also be a function of feedback given by a position sensor.
- Said feedback can for example come from a counter-electromotive force measured by a secondary coil or from a level of current reached flowing through the supply coil. It can also come from a magnetosensitive probe detecting the intensity or the direction of the magnetic field emitted by said magnet.
- FIG. 6 a perspective view of an exemplary embodiment of a device according to the invention having a rotary stroke
- FIG. 1 a to 1 d An example of a device according to the invention is shown in Figures 1 a to 1 d, the views 1 b to 1 d being sectional views along the plane shown in Figure 1 a.
- the device is a linear actuator of axisymmetric shape, but without the shape being limiting, a shape of a rectangular parallelepiped being also possible for example, as is a rotary configuration like that presented in FIG. 6.
- the device described here comprises an axis (1) moving linearly and axially relative to the axisymmetric shape.
- the axis is secured to a mobile mass (2) on which permanent magnets (3a, 3b) are positioned on both sides, axially, of the mobile mass (2) .
- the axle (1), mobile mass (2) and permanent magnets (3a, 3b) assembly constitute a moving unit in translation and axially from a first position to a second position or vice versa.
- the two extreme positions taken by this mobile assembly are presented in Figures 1c and 1d. These two positions are so-called stable positions, that is to say that they are held without current thanks to the permanent magnets (3a, 3b) against an external load or acceleration undergone by the device.
- the mobile assembly moves relative to a stator assembly formed by a ferromagnetic sheath (4) and a flange (5) as well as by a coil (6) of wire made of an electrically conductive material, for example copper or aluminum.
- the sheath (4) and the flange (5) surround the coil (6) in order to channel the magnetic field generated by the coil (6) when the latter is supplied with current and at less partially the magnetic field generated by the magnets (3a, 3b).
- the moving assembly therefore moves relatively to the stator assembly by sliding on two bearings (7), on either side of the moving mass (2).
- the stator assembly forms two ferromagnetic poles (15a, 15b) on either side of the moving mass (2) then forming two axial air gaps (1 1 a, 1 1 b) and two radial air gaps (12a, 12b).
- the actuator has a symmetry such that, in the central position of the movable mass (2) on its stroke, the air gaps (1 1 a, 12a) on the one hand and (1 1 b, 12b) on the other share are identical.
- the bearings (7) and the axis (1) are made of non-magnetic material, but it can also be envisaged to produce these elements from ferromagnetic material if there is a need to locally modify the force laws of the actuator or for reasons of mechanical resistance of the material.
- the opening (9) is optional and here proposed to take the supply wires from the coil (6) longitudinally. The latter can just as radially exit from the sheath (4).
- the flux of the permanent magnets (3a, 3b) is additive, that is to say that the direction of the arrows is in the same direction axially so that the fluxes of magnets (3a, 3b) are oppose that of the coil (6).
- the moving element is in the first stable position - Figure 1c - or in the second stable position - Figure 1 d - the coil flow (6 ) is such that it always opposes the flow of magnets (3a, 3b).
- opposite flow between magnet and coil means that, whatever the position of the moving mass (2), the flux of the magnet (3a, 3b) flowing through of the coil (6) - that is to say the one causing the proportional force - is opposed to the flow of the coil when the latter is supplied.
- Another object of the invention is to add the force proportional to the force generated by the sole action of the coil (6) by variable reluctance between the mass mobile (2), the sleeve (4) and the flange (5).
- the dimensioning of these elements is preferably done such that, when the mobile assembly is in the central position, or in the middle of the stroke as shown in FIG. 1b, the axial (1 1a, 1 1b) and radial (12a) air gaps , 12b) between the mobile mass (2) on the one hand and the sleeve (4) and the flange (5) on the other hand are identical on both sides of the mobile mass (2).
- a device according to the invention provides significant improvements in terms of space, ease of assembly and efficiency of the actuator.
- Figures 2a to 2d are examples of alternative embodiments, similar to the device shown in Figure 1b in terms of the moving mass (2), the coil (6), the axis (1) and bearings (7) but which differ as to the position of the permanent magnets (3a, 3b).
- the permanent magnets (3a, 3b) are positioned on the stator assembly and not on the movable assembly, integral with the flange (5) on the one hand and the sleeve (4) on the other go.
- the permanent magnets (3a, 3b) are positioned, integrated in the flange (5) and the sleeve (4) in the form, for example, of annular magnets preferably magnetized radially.
- the permanent magnets (3a, 3b) must be magnetized so that the magnetic fluxes are additive, that is to say by means of an internal radial magnetization for a magnet (3a) and an external radial magnetization for the other magnet (3b).
- the flow of the magnets (3a, 3b) thus always opposes the flow of the coil (6).
- the sheath (4) makes all the ferromagnetic parts of the stator in one piece.
- there is no axial opening for the wire outlet which can be done, for example radially (not shown here).
- the magnets (3a, 3b) are positioned on the outside of the actuator at the sleeve (4), for example in the form of angular sectors or in the form of a ring between two parts of the sheath (4).
- This embodiment makes it possible in particular to use a larger volume of magnet and therefore potentially greater efforts.
- the direction of the magnetic flux generated by the magnets (3a, 3b) is still opposite to that of the flux generated by the coil (4) when the latter is supplied.
- the permanent magnets are in the form of a single annular magnet (3a) axially magnetized and positioned inside the movable mass (2), for example as a layer of interposed material between two half-parts of the mobile mass (2) and always in such a way that its magnetic flux opposes that of the coil (6) when the latter is supplied.
- Figure 3 shows an alternative embodiment comprising two coaxial coils (6a, 6b) which are connected to each other in series or parallel so as to obtain only two supply wires. These coils (6a, 6b) are positioned inside the magnetic sheath (4) on either side of a ferromagnetic pole piece (8).
- the winding direction of the coils (6a, 6b) is alternated between each coil so that the magnetic fluxes generated by the two coils (6a, 6b) are opposite to each other, this in order to mainly generate a direction of magnetic field circulation of the coils (6a, 6b) as indicated by the dotted arrows.
- the direction of circulation can be opposite if the direction of magnetization of the magnet (3a) is also opposite.
- the pole piece (8) is indeed extended radially and internally by a magnet (3a), for example in the form of a ring whose magnetization is always such that the generated flux is opposed to the flow of the coils (6a, 6b), for example outgoing or incoming radial.
- a magnet (3a) for example in the form of a ring whose magnetization is always such that the generated flux is opposed to the flow of the coils (6a, 6b), for example outgoing or incoming radial.
- the ring can be replaced by an assembly of tiles or prisms whose magnetization is locally unidirectional in order to form, overall, a re-entrant or outgoing magnetization.
- Figure 4 shows the typical force curves - in Newton ([N]) - generated by an actuator according to the invention, depending on the position of the moving mass (2) - in millimeter ([mm]) - without the forms or the amplitudes being limiting. Without current in the coil (6), the force (F0) applied to the moving mass (2) is negative to the left of the graph and positive to the right of the graph, denoting the two positions of stability without current.
- the actuator it is therefore essential, in the invention, to associate the actuator with an electronic control of the voltage or of the current injected into the coil (6) which is synchronized with the movement of the moving mass (2) .
- the stopping of the supply to the coil can be controlled, in a closed loop, by the position detection performed by a sensor (not shown) external or integrated into the actuator, as described below.
- the power supply can also be stopped in an open loop thanks, for example, to a multi-dimensional table holding account for fluctuations in the supply voltage and external conditions, such as load or temperature.
- Figure 5 shows that for two different control voltage levels - in Volt ([V]) - the supply time - in milliseconds ([ms]) - of the coil (6 ) is variable. For 9 Volts, this duration is greater than that required for a control voltage of 16 Volts. Consequently, the current forms - in Ampere ([A]) - are different although ultimately implying a neighboring mechanical energy even if not strictly equal given the non-homogeneous conditions between the two cases (speed, peak current level , ).
- a device may advantageously integrate a current threshold detection function or the voltage induced by the coils (6a, 6b) themselves or by one or more other detection coils close to the coils (6a, 6b) and which are not supplied with voltage.
- position detection can be performed when a voltage threshold induced in these detection coils is reached.
- Detection can also be carried out by reaching a given value of current in the control coil (6a, 6b).
- Figures 7a, 7b and 8 are other exemplary embodiments of linear actuators.
- Figures 7a and 7b refer to two similar embodiments which differ in the orientation of the magnetization of the magnets (3a, 3b).
- the magnetization is radial outward or inward while it has an angular orientation relative to the axis of displacement in FIG. 7b.
- This angle here is close to 45 ° but this value is not limiting and serves in particular to increase the force due to the magnets to maximize the effort of stability on both sides of the race.
- the stator structure differs from the previous ones in that it is constituted by a single sleeve (4) without flange, and by the fact that it has only radial air gaps (12a, 12b) without axial air gaps.
- the orientation of the magnetization of the magnets (3a, 3b) is always such that the magnetic flux generated by the magnets (3a, 3b) always opposes that of the coil (6) regardless of the position of the mass. mobile (2).
- FIG 7b there is also shown a magnetosensitive probe (14), for example Hall effect, detecting the magnetic induction at a given point whose position can be adjusted to optimize the signal, and whose intensity or the direction is progressive as a function of the position of the moving mass (2). It is specified that such a probe can be used in any other configuration presented in this document.
- Figure 8 shows an even more compact embodiment using only magnet sectors (3a1, 3a2, 3b2) instead of annular magnet.
- the magnet sectors (3a1, 3a2, 3b2) are thus embedded in the sheath (4) between poles (4a, 4b) of the sheath (4).
- Figure 6 shows such a rotary actuator, the dotted line denoting the path followed by the moving mass (2), here integral with the magnets (3a, 3b).
- the stator (13) made of ferromagnetic material, which replaces the sheath (4) and the flange (5), but keeping the same mechanical and magnetic function ensuring directly or indirectly via a bearing, the stops and the channeling of magnetic fluxes.
- FIG. 9 schematically shows the control architecture which can be used to control an actuator according to the invention.
- This architecture includes here, the actuator (ACT.) Which is possibly associated with a position sensor (SENS.) Which sends its signal to an electronic control circuit (ECU).
- the electronic circuit (ECU) includes a table (TAB.) Which calculates, from the information battery supply voltage (BAT.) and ambient temperature (TEMP.), this pulse duration.
- Figures 10a, 10b and 10c show three sectional views of three alternative embodiments of an actuator according to the invention.
- the choice of using one or the other actuator from among these examples in FIGS. 10a, 10b, 10c will be dictated by the compromise between cost of production and desired performance.
- the actuators shown in Figures 10a, 10b and 10c have common elements with in particular an axis (1) integral with two movable masses (2a, 2b) between which is positioned a permanent magnet (3), guided and sliding at the 'interior of two bearings (17).
- This moving assembly moves between two stable end-of-travel positions delimited by two upper and lower flanges (5a, 5b) respectively, made integral by a sheath (4).
- the moving masses (2a, 2b), the flanges (5a, 5b) and the sheath (4) are made of a soft ferromagnetic material in order to channel the magnetic field of the magnet (3) and of the coil (s) (6, 6a , 6b, 6c), the number of which differs according to the variants shown in these three figures.
- the stroke ends are materialized either by contact of the mobile masses (2a, 2b) with, respectively, the flanges (5a, 5b) or by contact of the mobile masses (2a, 2b) with the guide bearings (17).
- FIG. 10a there is only one coil (6) fixed on a coil body (16) and positioned in the vicinity of the transverse median plane of the actuator so that it is in looking, radially, at the moving masses (2a, 2b) in one or other of the end-of-travel positions.
- FIG. 10a shows a "high" end of travel position and the moving mass (2b) is opposite, radially, from the coil (6).
- Figure 10b there are two coils (6a, 6b) fixed on a coil body (16) and positioned on either side of the transverse median plane of the actuator so that they are opposite, radially, the moving masses (2a, 2b) in one or the other of the end-of-travel positions.
- Figure 10b shows a "low" end-of-travel position and the moving mass (2b) faces, radially, the low spool (6b).
- Figure 10c there are three coils (6a, 6b, 6c) fixed on a coil body (16) and positioned in the vicinity of the transverse median plane of the actuator for the coil (6c) and share d 'other of said median plane for the coils (6a, 6b) so that they are facing, radially, moving masses (2a, 2b) in one or the other of the end positions.
- Figure 10c shows a mid-stroke position. The reader will understand that in the "high" end position, the coils (6a, 6c) will be opposite the moving masses, respectively (2a, 2b) and that in the "low” end position, the coils (6c, 6b) will be opposite the moving masses, respectively (2a, 2b).
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Electromagnets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1859948A FR3087935B1 (fr) | 2018-10-26 | 2018-10-26 | Actionneur bistable unipolaire de type balistique |
PCT/FR2019/052441 WO2020084220A1 (fr) | 2018-10-26 | 2019-10-16 | Actionneur bistable unipolaire de type balistique |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3871238A1 true EP3871238A1 (fr) | 2021-09-01 |
Family
ID=65861376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19808628.2A Pending EP3871238A1 (fr) | 2018-10-26 | 2019-10-16 | Actionneur bistable unipolaire de type balistique |
Country Status (7)
Country | Link |
---|---|
US (1) | US11657943B2 (fr) |
EP (1) | EP3871238A1 (fr) |
JP (1) | JP2022505489A (fr) |
KR (1) | KR102685288B1 (fr) |
CN (1) | CN112912974A (fr) |
FR (1) | FR3087935B1 (fr) |
WO (1) | WO2020084220A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3982379A1 (fr) * | 2020-10-08 | 2022-04-13 | The Swatch Group Research and Development Ltd | Micro-actionneur a solenoïde a retraction magnetique |
FR3127066B1 (fr) * | 2021-09-13 | 2023-09-08 | Commissariat Energie Atomique | Dispositif a surface reconfigurable, notamment afficheur pour afficher des caracteres braille |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3202886A (en) * | 1962-01-11 | 1965-08-24 | Bulova Watch Co Inc | Bistable solenoid |
US4747010A (en) * | 1987-04-16 | 1988-05-24 | General Electric Company | Bi-stable electromagnetic device |
DE3814765A1 (de) * | 1988-04-30 | 1989-11-09 | Messerschmitt Boelkow Blohm | Magnetventil |
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US6265956B1 (en) * | 1999-12-22 | 2001-07-24 | Magnet-Schultz Of America, Inc. | Permanent magnet latching solenoid |
US20020149456A1 (en) | 2000-06-21 | 2002-10-17 | Erwin Krimmer | Actuator, in particular for valves, relays or similar |
US7777600B2 (en) * | 2004-05-20 | 2010-08-17 | Powerpath Technologies Llc | Eddy current inductive drive electromechanical liner actuator and switching arrangement |
FR2884349B1 (fr) | 2005-04-06 | 2007-05-18 | Moving Magnet Tech Mmt | Actionneur electromagnetique polarise bistable a actionnement rapide |
ITMI20051404A1 (it) * | 2005-07-21 | 2007-01-22 | Rpe Srl | Valvola di intercettazione del flusso di liquidi con gruppo elettromagnetico di pilotaggio di tipo bi-stabile |
GB0822760D0 (en) * | 2008-12-13 | 2009-01-21 | Camcon Ltd | Bistable electromagnetic actuator |
DE102009039562B4 (de) * | 2009-09-01 | 2020-03-19 | Eto Magnetic Gmbh | Bistabile elektromagnetische Stellvorrichtung |
FR2951316B1 (fr) * | 2009-10-09 | 2013-01-18 | Schneider Electric Ind Sas | Actionneur bistable rotatif |
DE102010017874B4 (de) * | 2010-04-21 | 2013-09-05 | Saia-Burgess Dresden Gmbh | Bistabiler Magnetaktor |
CN101873046A (zh) * | 2010-06-11 | 2010-10-27 | 蹇兴亮 | 含稳态的永磁体电磁驱动装置 |
US9136052B2 (en) * | 2012-06-06 | 2015-09-15 | Glen A Robertson | Divergent flux path magnetic actuator and devices incorporating the same |
US9343216B2 (en) * | 2013-09-02 | 2016-05-17 | Glen A. Robertson | Energy efficient bi-stable permanent magnet actuation system |
DE102014216274A1 (de) | 2014-08-15 | 2016-02-18 | Zf Friedrichshafen Ag | Aktuator mit zumindest einer stabilen Schaltlage |
DE102014113500A1 (de) * | 2014-09-18 | 2016-03-24 | Eto Magnetic Gmbh | Bistabile elektromagnetische Aktorvorrichtung |
WO2016075571A1 (fr) * | 2014-11-13 | 2016-05-19 | Director General, Defence Research & Development Organisation (Drdo) | Actionneur magnétique bistable |
CN205195494U (zh) * | 2015-11-25 | 2016-04-27 | 杨斌堂 | 磁转子式双稳态动作执行器 |
-
2018
- 2018-10-26 FR FR1859948A patent/FR3087935B1/fr not_active Expired - Fee Related
-
2019
- 2019-10-16 CN CN201980069597.6A patent/CN112912974A/zh active Pending
- 2019-10-16 US US17/285,054 patent/US11657943B2/en active Active
- 2019-10-16 JP JP2021521749A patent/JP2022505489A/ja active Pending
- 2019-10-16 EP EP19808628.2A patent/EP3871238A1/fr active Pending
- 2019-10-16 WO PCT/FR2019/052441 patent/WO2020084220A1/fr unknown
- 2019-10-16 KR KR1020217015879A patent/KR102685288B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR20210082220A (ko) | 2021-07-02 |
WO2020084220A1 (fr) | 2020-04-30 |
US11657943B2 (en) | 2023-05-23 |
FR3087935B1 (fr) | 2021-05-14 |
KR102685288B1 (ko) | 2024-07-16 |
US20220005639A1 (en) | 2022-01-06 |
JP2022505489A (ja) | 2022-01-14 |
CN112912974A (zh) | 2021-06-04 |
FR3087935A1 (fr) | 2020-05-01 |
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