CN107482873A - A kind of low reluctance force permanent-magnetism linear motor - Google Patents
A kind of low reluctance force permanent-magnetism linear motor Download PDFInfo
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- CN107482873A CN107482873A CN201710885696.4A CN201710885696A CN107482873A CN 107482873 A CN107482873 A CN 107482873A CN 201710885696 A CN201710885696 A CN 201710885696A CN 107482873 A CN107482873 A CN 107482873A
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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
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
Abstract
The present invention relates to machine field, provide a kind of low reluctance force permanent-magnetism linear motor, first including being oppositely arranged primary unshakable in one's determination and the second primary iron core, the first primary side interval unshakable in one's determination away from the second primary iron core is installed on some first permanent magnets, and the second primary side interval unshakable in one's determination away from the first primary iron core is installed on some second permanent magnets；Each first permanent magnet corresponds with each second permanent magnet, and every one first permanent magnet shifts to install with corresponding second permanent magnet, and the direction of dislocation is consistent with the arragement direction of each first permanent magnet.A kind of low reluctance force permanent-magnetism linear motor of the present invention, shifted to install by every one first permanent magnet with corresponding second permanent magnet, reluctance force can be reduced, it is simple in construction, only install permanent magnet at primary place unshakable in one's determination, not only have permanent-magnetism linear motor power density high, efficiency high, the advantages that power factor is high, but also it is simple in construction with line inductance electromotor and switched relutance linear motor, cost is low, it is easy to maintain the advantages that.
Description
Technical field
The present invention relates to machine field, specially a kind of low reluctance force permanent-magnetism linear motor.
Background technology
Past is needing the occasion that moves along a straight line, and generally drives intermediate gearing by the rotary motion of motor by electric rotating machine
It is converted into moving along a straight line.But because the structure of intermediate mechanical transmission device is more complicated, easily rubbed in prolonged operating,
Abrasion, causes precise decreasing, gives raising control accuracy, and the reliability of motion to bring problem.Position, speed, acceleration simultaneously
The mechanostructural property (rigidity, inertia) of transmission device is limited by, also constrains the raising that high-precision linear moves performance.Tradition
Permanent magnet linear synchronous motor have the two-fold advantages of magneto and linear electric motors concurrently.Compared with line inductance electromotor, permanent magnetism is straight
It is the pushing force density height of line locking motor, small volume, in light weight, and there is dynamic brake function.
However, because the permanent magnet and armature winding of traditional magneto are separately mounted to primary and secondary, and permanent magnetism
The cost of body and armature is all higher, undoubtedly causes system in the long ranges such as such as track traffic, high-rise building elevator, factory's transport
Manufacturing cost and maintenance cost be significantly increased.In permanent-magnetism linear motor various structures, for single side type using more, advantage is to push away
Force density is high, but shortcoming is that normal force is very big, is probably numerically more than ten times of normal thrust.In order to bear this normal direction
Power is, it is necessary to strengthen the mechanical strength of load platform, so as to cause the quality of mobile platform and volume to greatly increase.
The content of the invention
It is an object of the invention to provide a kind of low reluctance force permanent-magnetism linear motor, can at least solve of the prior art
Segmental defect.
To achieve the above object, the embodiment of the present invention provides following technical scheme：A kind of low reluctance force permanent-magnetism linear motor,
First including being oppositely arranged primary unshakable in one's determination and the second primary iron core, described first is primary unshakable in one's determination away from the described second primary iron
The side interval of the heart is installed on some first permanent magnets, and described second is primary unshakable in one's determination away between the described first primary side unshakable in one's determination
Every being installed on some second permanent magnets；Each first permanent magnet corresponds with each second permanent magnet, and each described
First permanent magnet shifts to install with corresponding second permanent magnet, the direction of the dislocation and the row of each first permanent magnet
Cloth direction is consistent.
Further, in addition to the first secondary iron core and second subprime are unshakable in one's determination, and first secondary iron core is close to described first
Primary iron core has the side of the first permanent magnet, and the second subprime is unshakable in one's determination to have the second permanent magnetism close to the described second primary iron core
The side of body；Some first salient poles are distributed with close to the side uniform intervals of first permanent magnet in first secondary iron core
Some second salient pole teeth are distributed with tooth, the second subprime side uniform intervals unshakable in one's determination close to second permanent magnet.
Further, each first salient pole tooth and each second salient pole tooth are rectangular teeth；Any described
Distance of the one salient pole tooth along the first salient pole tooth arragement direction and the distance between two the first salient pole teeth sum that is connected
For τ, each first permanent magnet is τ/4 with the distance of the corresponding second permanent magnet dislocation.
Further, the described first primary iron core has the first keyway, and the described second primary iron core has and first key
The second keyway that groove coordinates；Along the arragement direction of each first permanent magnet, first keyway to the described first primary iron core
Wherein the distance of one end and second keyway to the difference of the distance of the end of described second primary the same side unshakable in one's determination are τ/4.
Further, the to the described second primary direction depression unshakable in one's determination is provided between two connected first permanent magnets
One groove, the second groove to the described first primary direction depression unshakable in one's determination is provided between two connected second permanent magnets；
The first armature winding is equipped with each first groove, the second armature winding is equipped with each second groove.
Further, each first armature winding and each second armature winding include six be arranged in order
Individual armature coil.
Further, it is respectively provided with air gap in each first groove and each second groove.
Further, each first armature winding and described first primary unshakable in one's determination and each second armature winding
Bonded with the described second primary iron core by glue.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of low reluctance force permanent-magnetism linear motor, pass through every 1
One permanent magnet shifts to install with corresponding second permanent magnet, can reduce reluctance force, and simple in construction, only pacifies at primary iron core
It is not only high with permanent-magnetism linear motor power density if permanent magnet, efficiency high, the advantages that power factor is high, but also with straight
Line induction machine and switched relutance linear motor are simple in construction, and cost is low, it is easy to maintain the advantages that；Every one first salient pole tooth and every
One second salient pole tooth is set to rectangular teeth, and the distance of dislocation, which is set to τ/4, can make the first primary iron core and the second primary iron core each
Cancelled out each other from caused reluctance force, greatly reduce the reluctance force of motor；It is only primary unshakable in one's determination unshakable in one's determination with the second primary first
Place sets armature winding, can substantially reduce cost；The armature coil being arranged in order can obtain the unloaded back-emf of maximum；Pass through
Motor radiating is easy in glue bonding, also allows for motor installation and linear motion；Both facilitate two by the first keyway and the second keyway
Individual primary positioning unshakable in one's determination, facilitates their installation again.
Brief description of the drawings
Fig. 1 is a kind of structural representation of low reluctance force permanent-magnetism linear motor provided in an embodiment of the present invention；
Fig. 2 is that a kind of structure of first armature winding of low reluctance force permanent-magnetism linear motor provided in an embodiment of the present invention is shown
It is intended to；
Fig. 3 is that a kind of structure of second armature winding of low reluctance force permanent-magnetism linear motor provided in an embodiment of the present invention is shown
It is intended to；
Fig. 4 is a kind of low reluctance force permanent-magnetism linear motor reluctance force curve map provided in an embodiment of the present invention；
In reference：1- first is primary unshakable in one's determination；2- second is primary unshakable in one's determination；The permanent magnets of 3- first；The permanent magnets of 4- second；5-
First secondary iron core；50- the first salient pole teeth；6- second subprimes are unshakable in one's determination；60- the second salient pole teeth；The grooves of 7- first；The electricity of 70- first
Pivot winding；The grooves of 8- second；The armature winding of 80- second；9- armature coils；90- air gaps；The keyways of 91- first；The keyways of 92- second.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Referring to Fig. 1, the embodiment of the present invention provides a kind of low reluctance force permanent-magnetism linear motor, including first be oppositely arranged
Primary 1 and second primary iron core 2 of iron core.Wherein, side interval of the first primary iron core 1 away from the second primary iron core 2 is installed
There are some first permanent magnets 3, side interval of the second primary iron core 2 away from the first primary iron core 1 is installed on some second permanent magnetism
Body 4, each first permanent magnet 3 correspond with each second permanent magnet 4, and every one first permanent magnet 3 and corresponding second permanent magnet 4
Shift to install, the direction of dislocation is consistent with the arragement direction of each first permanent magnet 3.By way of shifting to install, first is primary
After iron core 1 produces reluctance force and the second primary generation of iron core 2 reluctance force, the reluctance force of the two can cancel out each other, and greatly reduce
The reluctance force of motor.In addition, only installing permanent magnet on the first primary 1 and second primary iron core 2 of iron core, permanent magnet can be reduced
Cost, substantially reduce the manufacturing cost of this motor, suitable for promoting the use of.
As the prioritization scheme of the embodiment of the present invention, Fig. 1 and Fig. 4 are referred to, this motor also includes the first primary 1 He unshakable in one's determination
Second primary iron core 2, wherein, the first secondary iron core 5 has the side of the first permanent magnet 3 close to the first primary iron core 1, for the second time
Level iron core 6 has the side of the second permanent magnet 4 close to the second primary iron core 2；First secondary iron core 5 is close to the first permanent magnet 3
Some first salient pole teeth 50, side uniform intervals of the second subprime iron core 6 close to the second permanent magnet 4 are distributed with side uniform intervals
Some second salient pole teeth 60 are distributed with.Preferably, every one first salient pole tooth 50 and every one second salient pole tooth 60 are rectangular teeth,
Rectangular teeth is set to be easy to rule；Distance of the one first salient pole tooth 50 along the arragement direction of the first salient pole tooth 50 be connected two it is first convex
The distance between pole tooth 50 sum is τ, and every one first permanent magnet 3 is τ/4 with the distance that corresponding second permanent magnet 4 misplaces.Adopt
With this dislocation distance, can making the first primary iron core 1 and the second primary iron core 2, each caused reluctance force spatially misplaces
90 ° of electrical angles, therefore the detent force finally synthesized is cancelled out each other, and greatly reduces the detent force of motor.As shown in figure 4, first
Reluctance force waveform caused by primary primary 2 independent actions unshakable in one's determination of iron core 1 and second is basically identical, is simply differed in phase
90 ° of electrical angle, therefore the reluctance force that can make to finally give after cancelling out each other is greatly reduced.
Further optimize such scheme, referring to Fig. 1, the first primary iron core 1 has the first keyway 91, second is primary unshakable in one's determination
2 have the second keyway 92 coordinated with the first keyway 91, along the arragement direction of each first permanent magnet 3, the first keyway 91 to the
The difference of the distance of the end of primary 2 the same sides unshakable in one's determination of one primary the iron core 1 wherein distance of one end and the second keyway 92 to the second
For τ/4.For two primary iron cores in addition to the keyway difference that their own is installed, they two are identicals.Keyway is set, can be with
The position of good keyway is predefined, the first primary iron core 1 is staggered τ/4 with second primary unshakable in one's determination 2 when installation
Distance, be easy to position；On the other hand, two primary arranged in dislocation unshakable in one's determination are facilitated by the way of key connection.In actual behaviour
In work, N groups the first keyway 91 and the second keyway 92 can be set, N is more than 1, for example, two group of first keyway 92 of keyway 91 and second is set,
As shown in figure 1, in first group, the first keyway 91 and the second keyway 92 are in paper upper left side, 91 to the first primary iron of the first keyway
The distance of the end on the left side of the heart 1 is a, and the distance of the end on primary 2 left sides unshakable in one's determination of the second keyway 92 to the second is b1, and b1 subtracts a1
Equal to τ/4, in second group, the first keyway 91 and the second keyway 92 are in right side on paper, the primary iron core 1 of the first keyway 91 to the first
The distance of the end on the right is a2, and the distance of the end on the primary the right of iron core 2 of the second keyway 92 to the second is b2, and a2 subtracts b2 etc.
In τ/4, a1 need not be equal to a2, and b1 is also without equal to b2, as long as can be stably primary by the first primary iron core 1 and second
Iron core 2 installs.
As the prioritization scheme of the embodiment of the present invention, referring to Fig. 1, between two the first connected permanent magnets 3 be provided with to
First groove 7 of the second primary unshakable in one's determination 2 directions depression, it is provided with to the first primary iron core 1 between two the second connected permanent magnets 4
Second groove 8 of direction depression；The first armature winding 70 is equipped with each first groove 7, second is equipped with each second groove 8
Armature winding 80.Armature winding only is set at the first primary 1 and second primary iron core 2 of iron core, cost can be substantially reduced.
Further optimize such scheme, refer to Fig. 1, Fig. 2 and Fig. 3, every one first armature winding 70 and every 1
Two armature winding 80 include six armature coils 9 being arranged in order.Six armature coils 9 of the first armature winding 70 are respectively
A1、B1、C1、X1、Y1And Z1, six armature coils 9 of the second armature winding 80 are respectively A2、B2、C2、X2、Y2And Z2, by suitable
Sequence is arranged in order, and can obtain the unloaded back-emf of maximum.According to actual conditions, when needing series winding, the first armature winding 70
In Y1With B1Connection, X1With A1Connection, Z1With C1Connection, similarly, in the second armature winding 80 and in this way, repeating no more；
When needing in parallel, it is only necessary to by the A in two armature winding1With A2Connection, B1With B2Connection, C1With C2Connection, X1With X2Even
Connect, Y1With Y2Connection, Z1With Z2Connection.
Further optimize such scheme, referring to Fig. 1, being respectively provided with gas in every one first groove 7 and every one second groove 8
Gap 90.Air gap 90 herein is smaller, and reluctance force can be made also smaller.
Further optimize such scheme, every primary iron core 1 of one first armature winding 70 and first and every one second armature
Winding 80 is bonded with the second primary iron core 2 by glue., can be by primary unshakable in one's determination and coil windings embedding using filling process
For an entirety, casting glue is easy to motor radiating, also allows for motor installation and straight line fortune using high-thermal-conductivity epoxy resin
It is dynamic.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
- A kind of 1. low reluctance force permanent-magnetism linear motor, it is characterised in that：The first primary iron core and second including being oppositely arranged Primary unshakable in one's determination, the described first primary remote described second primary side interval unshakable in one's determination unshakable in one's determination is installed on some first permanent magnets, The described second primary side interval unshakable in one's determination away from the described first primary iron core is installed on some second permanent magnets；Each described first Permanent magnet corresponds with each second permanent magnet, and each first permanent magnet and corresponding second permanent magnet are wrong Position is set, and the direction of the dislocation is consistent with the arragement direction of each first permanent magnet.
- A kind of 2. low reluctance force permanent-magnetism linear motor as claimed in claim 1, it is characterised in that：Also include the first secondary iron core Unshakable in one's determination with second subprime, first secondary iron core is described close to the described first primary side with the first permanent magnet unshakable in one's determination Second subprime is unshakable in one's determination close to the described second primary side with the second permanent magnet unshakable in one's determination；First secondary iron core is close to described Some first salient pole teeth are distributed with the side uniform intervals of first permanent magnet, and the second subprime is unshakable in one's determination close to second permanent magnetism Some second salient pole teeth are distributed with the side uniform intervals of body.
- A kind of 3. low reluctance force permanent-magnetism linear motor as claimed in claim 2, it is characterised in that：Each first salient pole tooth And each second salient pole tooth is rectangular teeth；Any first salient pole tooth is along the first salient pole tooth arragement direction Distance is τ with the distance between two the first salient pole teeth sum that is connected, each first permanent magnet with it is corresponding described The distance of second permanent magnet dislocation is τ/4.
- A kind of 4. low reluctance force permanent-magnetism linear motor as claimed in claim 3, it is characterised in that：Described first primary tool unshakable in one's determination There are the first keyway, described second primary the second keyway unshakable in one's determination having with first keyway cooperation；Along each first permanent magnetism The arragement direction of body, first keyway to the described first primary wherein distance of one end unshakable in one's determination and second keyway to institute The difference for stating the distance of the end of second primary the same side unshakable in one's determination is τ/4.
- A kind of 5. low reluctance force permanent-magnetism linear motor as claimed in claim 1, it is characterised in that：Two connected described first Be provided with the first groove to the described second primary direction depression unshakable in one's determination between permanent magnet, two connected second permanent magnets it Between be provided with the second groove to the described first primary direction depression unshakable in one's determination；Be equipped with each first groove the first armature around Group, the second armature winding is equipped with each second groove.
- A kind of 6. low reluctance force permanent-magnetism linear motor as claimed in claim 5, it is characterised in that：Each first armature around Group and each second armature winding include six armature coils being arranged in order.
- A kind of 7. low reluctance force permanent-magnetism linear motor as claimed in claim 5, it is characterised in that：Each first groove with And it is respectively provided with air gap in each second groove.
- A kind of 8. low reluctance force permanent-magnetism linear motor as claimed in claim 5, it is characterised in that：Each first armature around Group is bonded with described first primary unshakable in one's determination and each second armature winding with the described second primary iron core by glue.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710885696.4A CN107482873B (en) | 2017-09-27 | 2017-09-27 | A kind of low reluctance force permanent-magnetism linear motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710885696.4A CN107482873B (en) | 2017-09-27 | 2017-09-27 | A kind of low reluctance force permanent-magnetism linear motor |
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| CN107482873A true CN107482873A (en) | 2017-12-15 |
| CN107482873B CN107482873B (en) | 2019-08-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088518A (en) * | 2018-09-25 | 2018-12-25 | 苏州直为精驱控制技术有限公司 | integrated linear motor |
| CN110932521A (en) * | 2019-11-26 | 2020-03-27 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation motor and low magnetic resistance design method thereof |
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| CN104052238A (en) * | 2014-06-12 | 2014-09-17 | 江苏大学 | Bilateral primary permanent magnetic vernier linear motor |
| CN105391260A (en) * | 2015-11-16 | 2016-03-09 | 江苏大学 | Double-stator permanent-magnetic cursor linear motor and design method for increasing magnetic field modulation effect |
| CN106992655A (en) * | 2017-04-11 | 2017-07-28 | 江苏大学 | A kind of magnetic field modulation permanent-magnetism linear motor and its Optimization Design for improving winding utilization |
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| JPH1052025A (en) * | 1996-08-01 | 1998-02-20 | Fanuc Ltd | Linear motor and its control method |
| US20060076839A1 (en) * | 2004-10-07 | 2006-04-13 | Yoichi Kawai | Linear motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088518A (en) * | 2018-09-25 | 2018-12-25 | 苏州直为精驱控制技术有限公司 | integrated linear motor |
| CN110932521A (en) * | 2019-11-26 | 2020-03-27 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation motor and low magnetic resistance design method thereof |
| CN110932521B (en) * | 2019-11-26 | 2022-02-15 | 江苏大学 | Primary permanent magnet bilateral linear magnetic field modulation motor and low magnetic resistance design method thereof |
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| CN107482873B (en) | 2019-08-09 |
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