WO2014044308A1 - Actionneur électrique - Google Patents

Actionneur électrique Download PDF

Info

Publication number
WO2014044308A1
WO2014044308A1 PCT/EP2012/068523 EP2012068523W WO2014044308A1 WO 2014044308 A1 WO2014044308 A1 WO 2014044308A1 EP 2012068523 W EP2012068523 W EP 2012068523W WO 2014044308 A1 WO2014044308 A1 WO 2014044308A1
Authority
WO
WIPO (PCT)
Prior art keywords
active part
end positions
coil element
active
electric actuator
Prior art date
Application number
PCT/EP2012/068523
Other languages
German (de)
English (en)
Inventor
Martin Hoffmann
Markus Reinhard
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to PCT/EP2012/068523 priority Critical patent/WO2014044308A1/fr
Publication of WO2014044308A1 publication Critical patent/WO2014044308A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
    • H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type

Definitions

  • the present invention relates to an electrical Stel ⁇ lantrieb. Moreover, the present invention relates to a method for operating an electric actuator.
  • turnout drives are used in BriefSortieranlagen that direct the letters in the corre ⁇ sponding subjects.
  • electrical actuators are used as valve or damper actuators.
  • electric actuators are used on steered wheels or for similar applications.
  • EP 1 858 142 A1 discloses a linear motor having a secondary part with permanent magnets and a movable primary part with current-carrying multiphase windings.
  • the permanent magnets ⁇ are arranged such that their north and south poles are arranged in the same direction in the direction of one behind the other.
  • the coils of the polyphase windings are designed such that they surround the permanent magnets of the secondary part at least partially.
  • the principle of the linear motor described in EP 1 858 142 A1 can likewise be transferred to a rotary motor.
  • the rotor has a plurality of Permanentmag ⁇ Neten, which are arranged in the circumferential direction.
  • the stator has a winding arrangement which surrounds the permanent magnets at least in regions.
  • the stator has, for example, U-shaped bent coils.
  • the electric actuator according to the invention comprises a first active part and a second active part, which is movable relative to the first active part along a predetermined movement path, wherein one of the active parts has at least one magnet ⁇ element and the other of the active part has at least one coil element, the at least be the magnetic element surrounds richly and wherein a movement of the second active ⁇ part is limited between two end positions.
  • the actuator comprises a control device which is designed to move the second active part between the two predetermined end positions by setting an electrical current flowing through the at least one coil element.
  • the electric actuator has two active parts.
  • the first active part is fixed - for example, on a Ge ⁇ housing - arranged.
  • the second active part can be moved in a predetermined manner relative to the first active part. In this case, the second active part can perform a rotational movement.
  • the actuator can also be designed so that the second active part performs a linear movement.
  • One of the active le has a magnetic element, which may comprise, for example, one or more permanent magnets. All permanent magnets in a magnetic element have the same Magnetisie ⁇ tion.
  • the other of the active parts has a coil element, which may have one or more coils with corresponding windings.
  • the coil element is so downloadedbil ⁇ det that it is the magnetic element at least partially around ⁇ is.
  • the basic arrangement or design of the coil element and the magnetic element corresponds to that which is described in EP 1 858 142 AI for an electrical machine.
  • the movement of the second active part of the electric actuator along its trajectory is now limited.
  • the second active part can only be moved back and forth between two predetermined end positions.
  • a control device controls the electric current through the coil element, whereby a movement of the second active part is effected to the first active part.
  • the electric actuator is thus a bistable tilting can be found ⁇ riding.
  • no rotating rotational movement of the second Ak ⁇ tivteils is provided.
  • the end positions of the second active portion are determined by the spatial extents of the coil member and the magnet element and / or the interaction of the coil element with the Mag ⁇ netelement along the movement path of the second active portion.
  • the dimension of the coil element and the magnetic element can be chosen to correspond to a range of movement of the electric actuator ⁇ .
  • the number of coils in the coil element and the number of permanent magnet may be selected accordingly entspre ⁇ in the magnetic element in order to predetermine the two end positions for the second active part.
  • the electric Stel ⁇ lantrieb be used, for example, where only a limited angle of rotation is needed. Examples of this are the BriefSortieranlagen, valve actuators, damper actuators or applications on steered wheels mentioned above.
  • the control device is designed to adapt the current flowing through the coil element electrical current so that the second active part performs a periodi ⁇ cal movement between the two end positions.
  • an electric current can be impressed into the coil element or a winding of the coil element. Due to the current flow, the movement of the second active part can be controlled.
  • the feed force with which the second active part is moved relative to the first active part results from the amplitude of the electrical current. It may be desired for any applications that the second active part performs a pendulum movement from the first to the second end position of the two end positions.
  • the control device can impress a substantially periodically changing current in the coil element.
  • the coil element can be supplied with a sinusoidal current. This can be provided in a simple manner, a job drive that performs a periodic movement.
  • control device is designed to hold the second active part in one of the end positions by adjusting the electrical current flowing through the coil element. If the second active part is to remain in a defined position, the current flow through the coil element can be interrupted. Thus, the second active part remains ste ⁇ hen in one of the end positions. It is also conceivable that the second active part remains in one or more intermediate positions between the end positions. If, for example, a force is to be generated with the second active part which acts against a stop, the coil element can continue to be energized. Thus, the second active part can be easily held in one of the end positions.
  • control means is adapted to reduce a current flowing through the coils of the element ⁇ sequent electric current to a predetermined value if the second active part of one of the end positions approaches.
  • the electric actuator can have a sensor with which it can be detected whether the second active part is approaching an area assigned to the first or second end position.
  • At the two end positions can be provided a mechanical stop. It can also be provided that the current in the coil element is reduced when the second active part is in one of the end positions. It is also conceivable that the current flow through the coil is switched off when the second active part approaches one of the end positions. Thus can be changed prevent that I heated the coil element as a result of current flow ⁇ .
  • the actuator includes a switching element with which the second active part in each of the two end positions together menwirkt, wherein said control means is adapted to the current flowing through the coil element electric current in response to a switching signal of the switching element ⁇ fit.
  • a switching element may be provided which is triggered by the second tivteil AK- when this occurs because the switching element be ⁇ .
  • the switching element can be formed as a mechanical switch ⁇ , which is actuated by the second active part when this is in the end position.
  • Switching element is actuated, the current flow through the coil element can be switched off. On a switching signal of the
  • Switching element also the current flow through the coil ⁇ element can be reduced with the control device.
  • the current flowing through the coil element current can be limited in a simple manner, when the second active part is in one of the end positions.
  • the actuator has a Hal ⁇ teelement for respectively holding the second active part in the includes two end positions.
  • the second active part can be mechanically held in the end position.
  • the second active part in the holding element einras ⁇ th or snap.
  • the second active part can also be released again from the holding element to allow movement of the second active part.
  • the coil element includes two single coil ⁇ .
  • the individual coils can each have a frame-shaped form.
  • the individual coils may consist of a wire winding and are in particular formed as flat coils.
  • As a carrier material for the individual coils also (flexible) printed circuit boards can be used, on which the Wick ⁇ lungs of the coils are printed.
  • the individual coils can be arranged on opposite sides of the magnetic element.
  • the individual coils may be arranged so that their winding axes are arranged perpendicular to the movement path of the second active part.
  • the second active part comprises the magnetic element.
  • the permanent magnets of the magnetic element do not require electrical connections, it may be useful for reasons of reliability to equip the second active part, ie the movable part of the actuator, with the magnetic element.
  • the coil element is arranged in the first Ak ⁇ tivteil.
  • the second active part may comprise the coil element. Since the coil element is significantly lighter than the magnetic element, the coil element can be placed on the movable Ak ⁇ tivteil. In order to supply the coil element with electrical ⁇ tricity, slip rings, inductive transducer or trailing wires can be used. Since a two-th active part comprises a coil element less Träg ⁇ moment of inertia, the dynamics of the actuator can be increased noticeably.
  • the inventive method for operating an electric actuator having a first active part and a second active part, which is movable relative to the first active part along a predetermined movement path, wherein one of the active parts has at least one magnetic element and the other of the active parts has at least one coil element, the the magnetic element surrounds at least in regions, comprises limiting a movement of the second active part between two end positions, setting a by the at least one coil element electric current flowing and thus moving the second active part between the two pre give ⁇ NEN end positions.
  • FIG. 1 shows a perspective view of an electric Stellan ⁇ drive
  • FIG. 2 shows a perspective view of the electrical Stellan ⁇ drive and a control device
  • FIG. 6 shows an arrangement of the coil element to the magnetic ⁇ element in a further embodiment
  • 7 shows an arrangement of a plurality of coil elements
  • FIG. 1 shows an electric actuator 10.
  • the electric actuator 10 has a first active part 12 and a second active part 14.
  • the second active part 14 is movable ⁇ Lich to the first active part 12 is formed.
  • the second Ak ⁇ tivteil 14 b may be moved along a movement path.
  • the first active part 12 in the present case only one coil element 16 is shown.
  • the coil element 16 has a winding, which is made of several layers of electrical conductors.
  • the electrical conductors may be formed by a copper wire, an aluminum wire or an aluminum foil. In the present case, only one turn 24 is shown by way of example.
  • the second active part 14 has a magnetic element 20 with a plurality of permanent magnets 18, which are glued or fixed on a magnetic carrier 22.
  • All Per ⁇ manentmagnete 18 in a magnetic element 20 have the same magnetization.
  • the permanent magnets 18 are cylindrical in the present example.
  • the magnetic elements 20 are arranged so that their respective Magneti ⁇ stechnikscardi extends along the path b.
  • the magnetic elements 20 are arranged so that in adjacent magnetic elements 20 are the same poles.
  • the coil element 16 is formed so that it surrounds the Perma ⁇ nentmagneten 18 regions.
  • the second Ak ⁇ tivteil 14 is moved relative to the first active part 12th
  • the movement path b of the second active part 14 is partially circular.
  • the electric actuator 10 has only one coil element 16. Due to the spatial extent of the coil element 16 and the Number and dimensions of the magnetic elements 20, the movement of the second active part 14 along the movement path b is limited between two end positions. The second active part 14 can only be moved back and forth between end positions.
  • the electric actuator 10 has a control device 26 which is electrically connected to the winding 24 of the coil element 16. With the control device 26, the current flowing through the coil element 16 can be adjusted.
  • the control device 26 is shown in FIG.
  • FIG. 3 shows the various curves 28, 30 and 32 of the electrical current that can be impressed into the coil element 16 with the control device 26.
  • the current intensity I is plotted over time.
  • the electric current must be impressed so that the desired Drehbewe ⁇ tion of the second active part 14 results. Ie. It must be a feed force generated in the desired direction.
  • the electric actuator 10 can also be operated with a DC ⁇ stream. This is shown by the curve 30 of the electrical current I.
  • the Spulenele ⁇ ment is operated with a bipolar direct current. By the change of sign of the electric current, the direction of movement of the second active part 14 along the movement path b can be reversed.
  • the electrical current can also be impressed into the coil element 16 according to the profile 32.
  • the second active part 14 which is located in one of the end positions, becomes lungs is, first with an electric current having a high amplitude applied to overcome the Massenträgheitsmo ⁇ ment of the second active part fourteenth
  • the amplitude of the electric current flowing through the Spulenele ⁇ ment 16 is again reduced.
  • an electric current with a high amplitude is necessary.
  • the permanent magnets 18 may have the shape of a hollow cylinder ⁇ segment.
  • the permanent magnets can also be formed cuboid ⁇ shaped.
  • the coil element 16 has two individual coils 34.
  • the individual coils 34 are formed as a frame-shaped flat coils.
  • a single coil 34 may be gebil ⁇ det by a single layer or a multi-layer printed circuit board, are applied to the respective windings. If the single coil 34 is a three-dimensional contour aufwei ⁇ sen to, a flexible printed circuit board with entspre ⁇ accordingly applied turns may be used.
  • the turns can be printed, for example. Lei ⁇ terplatten can be used, which have no curved contour on ⁇ .
  • the magnetic elements 20 may be magnetized along the movement path b or perpendicularly through the movement path b.
  • the individual coils 34 are arranged such that the Wi ⁇ ckelachsen of the individual coils 34 are arranged perpendicular to the movement path b.
  • the individual coils 34 are arranged along the supply track BEWE ⁇ b on the right and left edges of the permanent magnet 18th In the two individual coils 34, the current direction can be impressed against each other or rectified to each other, whereby a magnetization of the permanent magnet 18 parallel or perpendicular to the movement path b is possible.
  • the use of a single coil 34 in the first Ak is 12 is sufficient.
  • ge ⁇ shows in FIG. 5
  • the coil element 16 or the individual coils 34 can be arranged on the tangential side surfaces of the permanent magnet 18.
  • the individual coils 34 may also be arranged so that they are arranged along the movement path b above and below the permanent magnet 18 Perma ⁇ . Such an embodiment is shown in FIG.
  • a plurality of coil elements 16 and magnetic elements 20 along the movement path b can be arranged one behind the other. Such an arrangement is shown in FIG.
  • the coil elements 16 may be electrically connected in parallel or in series.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

L'invention concerne un actionneur électrique (10) muni d'une première partie active (12) et d'une deuxième partie active (14) qui peut être déplacée par rapport à la première partie active (12) le long d'une trajectoire de déplacement (b) prédéfinie, une des parties actives (12, 14) comportant au moins un élément magnétique (20) et l'autre partie active (12, 14) comportant au moins un enroulement (16) qui entoure au moins par endroits l'élément magnétique (20), et le déplacement de la deuxième partie active (14) étant délimité entre deux positions de fin de course. L'actionneur (10) comprend un dispositif de commande (26), qui est configuré pour déplacer la deuxième partie active (14) entre les deux positions de fin de course prédéfinies, par l'ajustement d'un courant électrique parcourant le ou les enroulements (16).
PCT/EP2012/068523 2012-09-20 2012-09-20 Actionneur électrique WO2014044308A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/068523 WO2014044308A1 (fr) 2012-09-20 2012-09-20 Actionneur électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2012/068523 WO2014044308A1 (fr) 2012-09-20 2012-09-20 Actionneur électrique

Publications (1)

Publication Number Publication Date
WO2014044308A1 true WO2014044308A1 (fr) 2014-03-27

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ID=47044978

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/068523 WO2014044308A1 (fr) 2012-09-20 2012-09-20 Actionneur électrique

Country Status (1)

Country Link
WO (1) WO2014044308A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014226861A1 (de) * 2014-12-22 2016-06-23 Siemens Aktiengesellschaft Elektrischer Verdichter
WO2017016710A1 (fr) * 2015-07-28 2017-02-02 Siemens Aktiengesellschaft Propulseur pour un aéronef et aéronef ou avion à ailes comprenant ce propulseur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605412A1 (de) * 1996-02-14 1997-08-28 Voss Michael Dipl Ing Elektrodynamischer Gleichstromlinearmotor mit aktiver Klemmung
EP1152077A2 (fr) * 2000-05-03 2001-11-07 Lindauer Dornier Gesellschaft M.B.H Entraínement rotatif pour le support du peigne d'un métier à tisser
EP1310588A2 (fr) * 2001-11-08 2003-05-14 Lindauer DORNIER GmbH Ensemble d'entraínement pour le peigne d'un métier à tisser
EP1858142A1 (fr) 2006-05-16 2007-11-21 Technische Universität Kaiserlautern Moteur linéaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19605412A1 (de) * 1996-02-14 1997-08-28 Voss Michael Dipl Ing Elektrodynamischer Gleichstromlinearmotor mit aktiver Klemmung
EP1152077A2 (fr) * 2000-05-03 2001-11-07 Lindauer Dornier Gesellschaft M.B.H Entraínement rotatif pour le support du peigne d'un métier à tisser
EP1310588A2 (fr) * 2001-11-08 2003-05-14 Lindauer DORNIER GmbH Ensemble d'entraínement pour le peigne d'un métier à tisser
EP1858142A1 (fr) 2006-05-16 2007-11-21 Technische Universität Kaiserlautern Moteur linéaire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014226861A1 (de) * 2014-12-22 2016-06-23 Siemens Aktiengesellschaft Elektrischer Verdichter
WO2017016710A1 (fr) * 2015-07-28 2017-02-02 Siemens Aktiengesellschaft Propulseur pour un aéronef et aéronef ou avion à ailes comprenant ce propulseur

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