CN106849605A - Linear electric motors - Google Patents
Linear electric motors Download PDFInfo
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- CN106849605A CN106849605A CN201710035425.XA CN201710035425A CN106849605A CN 106849605 A CN106849605 A CN 106849605A CN 201710035425 A CN201710035425 A CN 201710035425A CN 106849605 A CN106849605 A CN 106849605A
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- magnetic resistance
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- iron core
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- 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
- H02K41/033—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type with armature and magnets on one member, the other member being a flux distributor
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
Abstract
The invention discloses a kind of linear electric motors, the linear electric motors include：Motor secondary, motor secondary includes the magnetic resistance side of magnetic conduction, and magnetic resistance side includes the magnetic resistance iron core of the multiple annular being intervally arranged；Electric motor primary, electric motor primary and motor secondary are spaced apart and form air gap, and electric motor primary includes：Winding excitation side, winding excitation side includes that along the circumferentially spaced multiple of magnetic resistance iron core winding excitation side is suitable to sensing and produces magnetic field；Permanent magnet excitation side, permanent magnet excitation side includes along the circumferentially spaced multiple of magnetic resistance iron core, and multiple winding excitation side and multiple permanent magnet excitation sides coordinate along the circumferentially staggered arrangement of magnetic resistance iron core, and the permanent magnet excitation side with the winding excitation side.Linear electric motors of the invention, can be moved with the primary laying direction along the magnetic resistance iron core of motor secondary of pushing motor, and force density is big, is suitable to various straight lines and directly drives occasion.
Description
Technical field
The present invention relates to technical field of motors, more particularly to a kind of linear electric motors.
Background technology
In correlation technique, stator excitation type magneto has the advantages that permanent magnet consumption does not receive travel limit.But it is existing
Stator excitation type permanent magnet type linear motor, in certain space, its permanent magnet volume and groove area are mutually restricted, and are limited
The lifting of linear electric motors force density.
The content of the invention
It is contemplated that at least solving one of technical problem present in prior art.Therefore, the invention reside in proposition one
Linear electric motors are planted, the linear electric motors force density is big, is suitable to various straight lines and directly drives occasion.
Linear electric motors of the invention, including：Motor secondary, the motor secondary includes the magnetic resistance side of magnetic conduction, described
Magnetic resistance side includes the magnetic resistance iron core of the multiple annular being intervally arranged；Electric motor primary, between the electric motor primary and the motor secondary
Separate to form air gap, the electric motor primary includes：Winding excitation side, the winding excitation side was included along the week of the magnetic resistance iron core
To spaced apart multiple, the winding excitation side is suitable to sensing and produces magnetic field；Permanent magnet excitation side, the permanent magnet excitation side includes
Along the circumferentially spaced multiple of the magnetic resistance iron core, and multiple winding excitation sides and multiple permanent magnet excitation side edges
The circumferentially staggered arrangement of the magnetic resistance iron core, and the permanent magnet excitation side coordinates with the winding excitation side.
Linear electric motors of the invention, what the magnetic field and the permanent magnet excitation side that the winding excitation side produces produced
Magnetic field is modulated (for example couple) by the magnetic resistance side, is collectively forming thrust, promotes the electric motor primary along the magnetic of motor secondary
The laying direction motion of iron core is hindered, and because winding excitation side and permanent magnet excitation side include along the circumferentially-spaced arrangement of magnetic resistance iron core
Multiple, thus, not only can further increase force density, strengthen the driving force of linear electric motors, straight-line electric can also be improved
Machine drives the stability and reliability of process.Additionally, the size of electric motor primary is small, and compact conformation, motor secondary low cost, and row
Journey adjustable length is unrestricted, is suitable to various straight lines and directly drives occasion.
In certain embodiments, the winding excitation side is suitable to sensing generation a pair of poles or multipair pole field；And/or it is described
Permanent magnet excitation side suitably forms a pair of poles or multipair pole field.
In certain embodiments, the winding excitation side be suitable to sensing produce along the magnetic resistance iron core arragement direction successively
The multipair pole field of arrangement；And/or the permanent magnet excitation side suitably forms and is sequentially arranged along the arragement direction of the magnetic resistance iron core
Multipair pole field.
In certain embodiments, winding excitation side sensing produce each to each magnetic pole in pole field with
One of the permanent magnet excitation side to pole field in a magnetic pole cooperatively form by the magnetic induction path of magnetic resistance iron core.
In certain embodiments, the winding excitation side include winding iron core and be wound on single-phase on the winding iron core or
Polyphase windings.
In certain embodiments, the motor secondary also includes：Non-magnetic fixed plate, the magnetic resistance side is arranged on described
In fixed plate.
In certain embodiments, the magnetic conductivity of the fixed plate substantially 1.
In certain embodiments, the multiple magnetic resistance iron core along the longitudinal direction arrange by uniform intervals, and each described magnetic resistance
Iron core be in annular, at least side in the inner or outer side of the magnetic resistance iron core be disposed with the winding excitation side and it is described forever
Magnetism excitation side.
In certain embodiments, the inner side and/or outside of the magnetic resistance side be provided with along the circumferentially staggered of the magnetic resistance side and
The winding excitation side and the permanent magnet excitation side of uniform intervals arrangement.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Fig. 1 is the schematic diagram of linear electric motors according to embodiments of the present invention；
Fig. 2 is the schematic diagram of another angle of the linear electric motors shown in Fig. 1；
Fig. 3 is the schematic diagram of the winding excitation side shown in Fig. 2；
Fig. 4 is the schematic diagram of the permanent magnet excitation side shown in Fig. 2；
Fig. 5 is the schematic diagram of the linear electric motors according to other embodiments of the invention；
Fig. 6 is the schematic diagram of another angle of the linear electric motors shown in Fig. 5.
Reference：
Linear electric motors 100,
Motor secondary 1, magnetic resistance iron core 11,
Electric motor primary 2, winding excitation side 21, the first magnetic pole 211, winding iron core 212, winding 213,
Permanent magnet excitation side 22, the second magnetic pole 221, permanent magnetism iron core 222,
Air gap 3.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
It is an object of the invention to propose a kind of linear electric motors of utilization magnetic resistance mudulation effect, the winding and permanent magnetism of the motor
Body is in the same side of air gap and does not interfere with each other, and used as primary, and the motor secondary of reluctance type is simple and reliable for structure.The motor has
There is primary size small, force density is big, the characteristics of compact conformation, be adapted to be applied to various straight lines and directly drive occasion.
Linear electric motors 100 according to embodiments of the present invention are described below with reference to Fig. 1-Fig. 6.
As shown in figure 1, linear electric motors 100 according to embodiments of the present invention, including：Electric motor primary 2 and motor secondary 1.
Specifically, motor secondary 1 includes the magnetic resistance side of magnetic conduction, and the magnetic resistance side includes multiple magnetic resistance iron cores 11, multiple magnetic
Resistance iron core 11 is intervally arranged along the fore-and-aft direction shown in Fig. 1, and multiple magnetic resistance iron cores 11 are in a ring.User can be by setting
The magnetic resistance iron core 11 of varying number, the laying length of regulation magnetic resistance iron core 11, and then adjust the haul distance of linear electric motors 100.
Electric motor primary 2 and motor secondary 1 are spaced apart and form air gap 3, and electric motor primary 2 relative to motor secondary 1 along Fig. 1
Shown in fore-and-aft direction may move, so, be connected with other parts to be driven by by electric motor primary, it is possible to achieve drive it
Move along a straight line.
Electric motor primary 2 includes：Winding excitation side 21 and permanent magnet excitation side 22.Wherein, winding excitation side 21 includes multiple, and
Multiple winding excitation sides 21 are suitable to sensing and produce magnetic field along the circumferentially-spaced arrangement of magnetic resistance iron core 11.So it is easy to winding excitation
The coupling of side 21 and the magnetic resistance side.
Permanent magnet excitation side 22 also include multiple, multiple permanent magnet excitation sides 22 along magnetic resistance iron core 11 circumferentially-spaced arrangement, and
On along the circumferential direction of magnetic resistance iron core 11, multiple permanent magnet excitation sides 22 and multiple interlaced arrangements of winding excitation side 21, that is,
Say, arranged by a permanent magnet excitation side 22, along magnetic resistance between the circumferentially-adjacent two winding excitation side 21 of magnetic resistance iron core 11
Arranged between the circumferentially-adjacent two permanent magnet excitation side 22 of iron core 11 by a winding excitation side 21.Further, and permanent magnetism
Excitation side 22 coordinates generation magnetic field with winding excitation side 21.In this way, being easy to the coupling of permanent magnet excitation side 22 and the magnetic resistance side.
The first magnetic pole 211 of the neighbouring magnetic resistance side is could be formed with winding excitation side 21.For example, working as winding excitation side
When winding on 21 is powered, can be formed on the winding iron core of winding excitation side 21 first magnetic pole 211 (it is described below around
The first magnetic pole 211 on group excitation side 21 is referred both to after the winding 212 of winding excitation side 21 is powered, the shape on winding iron core 213
Into magnetic pole), and the first magnetic pole 211 is adjacent to the magnetic resistance side.Permanent magnet excitation side 22 has the second magnetic of the neighbouring magnetic resistance side
Pole 221.In other words, permanent magnet excitation side 22 has the second magnetic pole 221, and the second magnetic pole 221 is set adjacent to the magnetic resistance side.First magnetic
Pole 211, the second magnetic pole 221 are suitable to cooperatively form magnetic induction path with magnetic resistance iron core 11.Thus, by the magnetic resistance side cause around
Coupling between group excitation side 21 and permanent magnet excitation side 22 can be better achieved, and can better profit from magnetic resistance mudulation effect,
Be conducive to improving the force density of linear electric motors 100.
Wherein, the magnetic field that the magnetic field and the permanent magnet excitation side 22 that the winding excitation side 21 produces produce is by described
Magnetic resistance side is modulated, and is collectively forming thrust, promotes the electric motor primary 2 to be moved along the laying direction of the magnetic resistance iron core of motor secondary 1.
Linear electric motors 100 according to embodiments of the present invention, magnetic field and the permanent magnetism that the winding excitation side 21 produces
The magnetic field that excitation side 22 produces is modulated (for example couple) by the magnetic resistance side, is collectively forming thrust, promotes the electric motor primary 2
Moved along the laying direction of the magnetic resistance iron core 11 of motor secondary 1, and because winding excitation side 21 and permanent magnet excitation side 22 include
Along the circumferentially spaced multiple of magnetic resistance iron core 11, thus, not only can further increase force density, strengthen linear electric motors 100
Driving force, can also improve linear electric motors 100 drive process stability and reliability.Additionally, the size of electric motor primary 2
It is small, compact conformation, the low cost of motor secondary 1, and haul distance is adjustable unrestricted, is suitable to various straight lines and directly drives occasion.
It should be noted that because the winding excitation side 21 and permanent magnet excitation side 22 of electric motor primary 2 are along the magnetic resistance side
Circumferential uniform intervals arrangement, its good stability for driving, can correct in stroke deviation (such as linear electric motors be subject to
The angled external force effect of its stroke directions), it is particularly well-suited to the more severe area of environment and uses.Additionally, multiple magnetic resistance iron cores
Laying direction is not limited to straight line, that is to say, that multiple magnetic resistance iron cores 11 can be laid in curve, linear electric motors of the invention 100
Electric motor primary 2 can realize along multiple magnetic resistance iron cores 11 laying route move.
In one embodiment of the invention, reference picture 3, when the winding on winding excitation side 21 is powered, winding excitation
At least one of first magnetic pole 211 of the sensing generation of side 21 and the second magnetic pole 221 of permanent magnet excitation side 22 include the institute along Fig. 1
The spaced apart multiple of fore-and-aft direction shown.That is, can be that the first magnetic pole 211 of winding excitation side 21 is included along front and rear
The spaced apart multiple in direction.Can also be permanent magnet excitation side 22 the second magnetic pole 221 include it is spaced apart along the longitudinal direction
It is multiple.Can also be that the first magnetic pole 211 of winding excitation side 21 and the second magnetic pole 221 of permanent magnet excitation side 22 include along front and rear
The spaced apart multiple in direction.As a result, winding excitation side 21 can further be realized with the coupling of permanent magnet excitation side 22.
Wherein, in some specific embodiments of the invention, the first magnetic pole 211 and forever that the sensing of winding excitation side 21 is produced
Second magnetic pole 221 of magnetism excitation side 22 can be corresponded.
It should be noted that multiple here can include two or more.Certainly, the invention is not restricted to this,
In other embodiment of the invention, the first magnetic pole 211 of winding excitation side 21 and the second magnetic pole 221 of permanent magnet excitation side 22 also may be used
With including one.For example, the first magnetic pole 211 of winding excitation side 21 includes one, the second magnetic pole 221 of permanent magnet excitation side 22
Including one.The number and arrangement side of the first magnetic pole 211 of winding excitation side 21 and the second magnetic pole 221 of permanent magnet excitation side 22
Formula adaptability can be set according to actual needs.
Some specific embodiments of the invention, winding excitation side 21 is suitable to sensing and produces a pair of pole fields or multipair pole
Magnetic field；And/or permanent magnet excitation side 22 suitably forms a pair of pole fields or multipair pole field.As a result, winding excitation side 21 with
The coupling of permanent magnet excitation side 22 can be realized further.
Reference picture 1, winding excitation side 21 is suitable to sensing and produces a pair of pole fields；When arranged for interval is more on winding excitation side 21
During individual winding, winding excitation side 21 is suitable to sensing and produces multipair pole field.Reference picture 3, permanent magnet excitation side 22 suitably forms a pair
Pole field；Certainly, permanent magnet excitation side 22 suitably forms multipair pole field.
Further, reference picture 1, winding excitation side 21 be suitable to sensing produce along magnetic resistance iron core 11 arragement direction (for example
Fore-and-aft direction shown in Fig. 1) the multipair pole field that is sequentially arranged；And/or permanent magnet excitation side 22 is suitably formed along magnetic resistance iron core
The multipair pole field that 11 arragement direction is sequentially arranged.So enable the coupling of winding excitation side 21 and permanent magnet excitation side 22
It is better achieved.
In some specific embodiments of the invention, winding excitation side 21 sensing produce each pair pole field in each
Magnetic pole is cooperatively formed and led to by the magnetic induction of magnetic resistance iron core 11 with a magnetic pole in a pair of pole fields of permanent magnet excitation side 22
Road.As a result, the coupling between winding excitation side 21 and permanent magnet excitation side 22 can be better achieved, can better profit from
Magnetic resistance mudulation effect, is conducive to improving the force density of linear electric motors 100.
Some specific embodiments of the invention, permanent magnet excitation side 22 and winding excitation side 21 include multiple, permanent magnetism
Excitation side 22 and winding excitation side 21 along magnetic resistance iron core 11 circumferentially staggered arrangement, adjacent permanent magnet excitation side 22 and winding excitation
Suitably formed between side 21 by least one magnetic induction return circuit of magnetic resistance iron core 11.So it is easy to set linear electric motors 100
Into different specifications, so as to the range of choice for extending one's service.
Further, the sensing of winding excitation side 21 is produced the first magnetic pole 211 and the second magnetic pole 221 of permanent magnet excitation side 22
At least one of including arranged for interval along the longitudinal direction and two neighboring opposite polarity multiple.That is, winding is encouraged
At least one of first magnetic pole 211 of the sensing generation of magnetic side 21 and the second magnetic pole 221 of permanent magnet excitation side 22 are included along front and rear
In the spaced apart multiple in direction, and the magnetic pole 221 of multiple first magnetic poles 211 and/or second two neighboring first magnetic pole 211 and/
Or second magnetic pole 221 opposite polarity.Thus, be conducive to improving the force density of compound rectifier excitation linear electric motors 100.
Specifically, the first magnetic pole 211 that the sensing of winding excitation side 21 is produced can include spaced apart along the longitudinal direction
The opposite polarity of two neighboring first magnetic pole 211 in multiple, and multiple first magnetic poles 211.
Second magnetic pole 221 of permanent magnet excitation side 22 includes spaced apart multiple along the longitudinal direction, and multiple second magnetic poles
The opposite polarity of two neighboring second magnetic pole 221 in 221.
The first magnetic pole 211 and the second magnetic pole 221 of permanent magnet excitation side 22 that the sensing of winding excitation side 21 is produced include edge
The opposite polarity of two neighboring first magnetic pole 211 in the spaced apart multiple of fore-and-aft direction, and multiple first magnetic poles 211, and it is many
The opposite polarity of two neighboring second magnetic pole 221 in individual second magnetic pole 221.
In some specific embodiments of the invention, the first magnetic pole 211 includes spaced apart multiple along the longitudinal direction, the
Two magnetic poles 221 include spaced apart multiple along the longitudinal direction, and multiple first magnetic poles 211 are with multiple second magnetic poles 221 along magnetic resistance
The circumferential direction of iron core 11 is corresponded, and the mutually magnetic pole 221 of corresponding first magnetic pole 211 and second is suitable to and a magnetic resistance iron
Core 11 cooperatively forms magnetic induction path.Thus, the magnetic field for being easy to the first magnetic pole 211 to produce couples with magnetic resistance iron core 11, also allows for
The magnetic field that second magnetic pole 221 is produced couples with magnetic resistance iron core 11 so that the coupling energy of winding excitation side 21 and permanent magnet excitation side 22
Enough it is better achieved by the modulation of the magnetic resistance side.
Wherein, the magnetic field that the magnetic field and the permanent magnet excitation side 22 that the winding excitation side 21 produces produce is by described
Magnetic resistance side is modulated, and is collectively forming thrust, promotes the primary to be moved along secondary laying direction.
Referring to Figures 1 and 2, some specific embodiments of the invention, winding excitation side 21 includes the He of winding iron core 212
It is wound on the unidirectional or polyphase windings 213 on winding iron core 212.As a result, the coupling of winding excitation side 21 and the magnetic resistance side
Can be better achieved.
Wherein, winding iron core 212 can be made up of high permeability material (such as silicon steel sheet etc.), and winding 213 is concentratred winding,
The number of phases of winding 213 can be single-phase or multiphase (such as two-phase, three equal), when can be with after the alternating current of the injection correspondence number of phases
It is the travelling-magnetic-field of ps to form number of pole-pairs.
In certain embodiments, winding excitation side 21 can sense to form spaced apart three the first magnetic poles 211,
Winding 213 is equipped between per two adjacent the first magnetic poles 211, and two phases of winding 213 differ 90 °.Now, winding
213 number of phases can be two-phase so that the number of phases of winding 213 can be not only single-phase, or multiphase, so can be one
Determine the scope of application of expansion linear electric motors 100 in degree, preferably meet the different demands of user.
Certainly, in other embodiments of the invention, winding excitation side 21 can also sense to form spaced apart four
First magnetic pole 211, is equipped with winding 213, and three phases of winding 213 differences between every two adjacent the first magnetic poles 211
120°.Now, the number of phases of winding 213 can be three-phase.
In addition, reference picture 2, permanent magnet excitation side 22 also includes permanent magnetism iron core 222, permanent magnetism iron core 222 and the phase of the second magnetic pole 221
Connect, and permanent magnetism iron core 222 can be located at side of second magnetic pole 221 away from air gap 3.
Some specific embodiments of the invention, the motor secondary 1 also includes：Non-magnetic fixed plate (is not shown
Go out), the magnetic resistance side is arranged in the fixed plate.Specifically, multiple magnetic resistance iron cores 11 (institute in reference picture 1 along the longitudinal direction
The fore-and-aft direction for showing) it is intervally arranged in fixed plate, and also magnetic resistance iron core 11 is fixed with fixed plate relative position.Thus, it is easy to
Positioning of the magnetic resistance iron core 11 in fixed plate is realized, so as to be conducive to the installation of linear electric motors 100.
Further, the magnetic conductivity of fixed plate substantially 1.In other words, fixed plate can be magnetic conductivity for 1 or so (with sky
The magnetic conductivity of gas close to) materials such as plastics etc., thus, be conducive to improving the use reliability of linear electric motors 100.
Reference picture 1, some specific embodiments of the invention, multiple magnetic resistance iron cores 11 are along the longitudinal direction (in reference picture 1
Shown fore-and-aft direction) uniform intervals arrangement, and each magnetic resistance iron core 11 is in annular.Allow to need decision many regarding stroke
The laying length of individual magnetic resistance iron core 11, is so conducive to improving the smoothness of operation of linear electric motors 100.
In some embodiments of the invention, multiple winding excitation sides 21 and multiple permanent magnet excitation sides 22 are along magnetic resistance iron core 11
Circumferential uniform intervals arrangement, and winding excitation side 21 and permanent magnet excitation side 22 are located at radially same of magnetic resistance iron core 11
Side, such as shown in Fig. 2, multiple winding excitation sides 21 and multiple permanent magnet excitation sides 22 are along the circumferentially staggered and equal of magnetic resistance iron core 11
Even arranged for interval in the outside of magnetic resistance iron core 11, and as shown in Figure 5 and Figure 6, multiple winding excitation sides 21 and multiple permanent magnet excitations
Side 22 is arranged in the inner side of magnetic resistance iron core 11 along the circumferentially staggered and uniform intervals of magnetic resistance iron core 11.It is of course also possible to described
The inner side and outer side of magnetic resistance side is equipped with the winding excitation side 21 and permanent magnet excitation side 22 of circumferentially uniform intervals and interlaced arrangement.
Thus, it is possible to adaptability arranges the relative position of winding excitation side 21 and permanent magnet excitation side 22 and magnetic resistance iron core 11 as needed,
Improve the scope of application of linear electric motors.
Below with reference to Fig. 1-Fig. 4 descriptions according to a linear electric motors for specific embodiment 100 of the invention.
Embodiment one,
Reference picture 1, linear electric motors 100 include electric motor primary 2 and motor secondary 1, wherein, electric motor primary 2 and motor secondary 1
Between between-line spacing open form into air gap 3, electric motor primary 2 includes multiple winding excitation sides 21 and multiple permanent magnet excitation sides 22, motor
Level 1 includes magnetic resistance side, and the magnetic resistance side includes magnetic resistance iron core 11 and fixed plate.
Specifically, the fixation that the magnetic resistance iron core 11 and non-magnet material that the magnetic resistance side is made up of high permeability material are constituted
Plate is constituted, and particularly, the magnetic resistance iron core 11 is equidistantly spaced from along stroke directions (fore-and-aft direction), and magnetic resistance iron core is in annulus
Shape.
Multiple winding excitation sides 21 and multiple permanent magnet excitation sides 22 are arranged in magnetic along the circumferential uniform intervals of magnetic resistance iron core 11
Resistance iron core 11 outside radially, and multiple winding excitation sides 21 and multiple permanent magnet excitation sides 22 hand over along the circumference of magnetic resistance iron core 11
Mistake arrangement, i.e.,：Arranged by (a winding of permanent magnet excitation side 22 between two adjacent winding excitation sides 21 (permanent magnet excitation side 22)
Excitation side 21).
The winding iron core 212 and the winding 213 of coiling thereon that winding excitation side 21 is made up of high permeability material are constituted, institute
State permanent magnetism iron core 222 that permanent magnet excitation side 22 is made up of high permeability material and permanent magnet is constituted, the He of permanent magnet excitation side 22
The winding excitation side 21 keeps relatively fixed position, and each with the magnetic resistance side keeps fixed interval (FI) (air gap 3).Work as institute
Stating when be passed through alternating current in winding 213, what the magnetic field and the permanent magnet excitation side 22 that the winding excitation side 21 produces produced
Magnetic field is collectively forming row thrust ripple by the modulation of the magnetic resistance iron core 11, promotes the electric motor primary 2 along the magnetic resistance iron
The direction of the laying of core 11 moves ahead.
Linear electric motors 100 according to embodiments of the present invention, cylindrical shape, winding excitation side 21 and permanent magnet excitation side 22 exist
The same side of air gap 3 is symmetrical arranged and does not interfere with each other, used as electric motor primary 2；And the simple structure of motor secondary 1 of magnetic resistance side can
Lean on.The linear electric motors 100 have primary size small, and force density is big, the characteristics of compact conformation, are adapted to be applied to various straight lines and directly drive
Occasion, is not limited by haul distance.
Embodiment two,
As shown in Figure 5 and Figure 6, the present embodiment is roughly the same with the structure of embodiment one, and wherein identical part uses phase
Same reference, the difference is that only：Multiple winding excitation sides 21 described in embodiment one and multiple permanent magnet excitation sides 22
It is arranged in the magnetic resistance iron core 11 outside radially, and multiple winding excitation sides 21 described in the present embodiment two and multiple permanent magnetism
Excitation side 22 is arranged in the magnetic resistance iron core 11 inner side radially.
In the description of the invention, it is to be understood that term " " center ", " length ", " on ", D score, "front", "rear",
"left", "right", etc. instruction orientation or position relationship be, based on orientation shown in the drawings or position relationship, to be for only for ease of and retouch
The present invention is stated to be described with simplified, must be with specific orientation, with specific rather than the device or element for indicating or imply meaning
Azimuth configuration and operation, therefore be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " is meant that two or more,
Unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect, can also be communication；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be with
Be two element internals connection or two interaction relationships of element.For the ordinary skill in the art, may be used
To understand above-mentioned term concrete meaning in the present invention as the case may be.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
Can these embodiments be carried out with various changes, modification, replacement and modification in the case of departing from principle of the invention and objective, this
The scope of invention is limited by claim and its equivalent.
Claims (9)
1. a kind of linear electric motors, it is characterised in that including：
Motor secondary, the motor secondary includes the magnetic resistance side of magnetic conduction, and the magnetic resistance side includes the multiple annular being intervally arranged
Magnetic resistance iron core；
Electric motor primary, the electric motor primary and the motor secondary are spaced apart and form air gap, and the electric motor primary includes：
Winding excitation side, the winding excitation side is included along the circumferentially spaced multiple of the magnetic resistance iron core, the winding
Excitation side is suitable to sensing and produces magnetic field；
Permanent magnet excitation side, the permanent magnet excitation side is included along the circumferentially spaced multiple of the magnetic resistance iron core, and multiple institutes
State the circumferentially staggered arrangement of winding excitation side and multiple permanent magnet excitation sides along the magnetic resistance iron core, and the permanent magnet excitation side
Coordinate with the winding excitation side.
2. linear electric motors according to claim 1, it is characterised in that the winding excitation side is suitable to sensing and produces a pair of poles
Or multipair pole field；And/or
The permanent magnet excitation side suitably forms a pair of poles or multipair pole field.
3. linear electric motors according to claim 2, it is characterised in that the winding excitation side is suitable to sensing and produces along described
The multipair pole field that the arragement direction of magnetic resistance iron core is sequentially arranged；And/or
The permanent magnet excitation side suitably forms the multipair pole field being sequentially arranged along the arragement direction of the magnetic resistance iron core.
4. linear electric motors according to claim 2, it is characterised in that the winding excitation side sensing produce each to pole
Each magnetic pole in magnetic field with one of the permanent magnet excitation side to pole field in a magnetic pole cooperatively form by magnetic
Hinder the magnetic induction path of iron core.
5. linear electric motors according to claim 1, it is characterised in that the winding excitation side includes winding iron core and is wound on
Single-phase or polyphase windings on the winding iron core.
6. linear electric motors according to any one of claim 1-5, it is characterised in that the motor secondary also includes：It is non-
The fixed plate of magnetic conduction, the magnetic resistance side is arranged in the fixed plate.
7. linear electric motors according to claim 6, it is characterised in that the magnetic conductivity of the fixed plate substantially 1.
8. linear electric motors according to any one of claim 1-5, it is characterised in that the multiple magnetic resistance iron core is along front and back
Arranged to uniform intervals, and each described magnetic resistance iron core is in annular, in the inner or outer side of the magnetic resistance iron core at least one
Side is disposed with the winding excitation side and the permanent magnet excitation side.
9. linear electric motors according to claim 8, it is characterised in that the inner side and/or outside of the magnetic resistance side are provided with
Along the winding excitation side and the permanent magnet excitation side that the circumferentially staggered and uniform intervals of the magnetic resistance side are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035425.XA CN106849605B (en) | 2017-01-18 | 2017-01-18 | Linear motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710035425.XA CN106849605B (en) | 2017-01-18 | 2017-01-18 | Linear motor |
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| CN106849605B CN106849605B (en) | 2019-08-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323646A (en) * | 2018-11-13 | 2019-02-12 | 阿斯科纳科技（深圳）有限公司 | A kind of position sensor system applied to linear motor vector controlled |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6192158A (en) * | 1984-10-11 | 1986-05-10 | Hitachi Ltd | Linear motor |
| CN104811011A (en) * | 2015-05-26 | 2015-07-29 | 哈尔滨工业大学 | Cylindrical type transverse magnetic-field permanent-magnet flux-switching linear motor |
| CN105048764A (en) * | 2015-08-12 | 2015-11-11 | 兰州空间技术物理研究所 | Single-phase cylindrical switch-reluctance linear motor |
-
2017
- 2017-01-18 CN CN201710035425.XA patent/CN106849605B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6192158A (en) * | 1984-10-11 | 1986-05-10 | Hitachi Ltd | Linear motor |
| CN104811011A (en) * | 2015-05-26 | 2015-07-29 | 哈尔滨工业大学 | Cylindrical type transverse magnetic-field permanent-magnet flux-switching linear motor |
| CN105048764A (en) * | 2015-08-12 | 2015-11-11 | 兰州空间技术物理研究所 | Single-phase cylindrical switch-reluctance linear motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323646A (en) * | 2018-11-13 | 2019-02-12 | 阿斯科纳科技（深圳）有限公司 | A kind of position sensor system applied to linear motor vector controlled |
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| CN106849605B (en) | 2019-08-30 |
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