CN104578635B - Asymmetric double-stator cylindrical permanent magnet linear motor - Google Patents
Asymmetric double-stator cylindrical permanent magnet linear motor Download PDFInfo
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- CN104578635B CN104578635B CN201510010254.6A CN201510010254A CN104578635B CN 104578635 B CN104578635 B CN 104578635B CN 201510010254 A CN201510010254 A CN 201510010254A CN 104578635 B CN104578635 B CN 104578635B
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- armature
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- magnetic pole
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
Abstract
The invention discloses an asymmetric double-stator cylindrical permanent magnet linear motor which comprises a short stator and a long rotor. The short stator is of a double-stator asymmetric structure, one side of the short stator is provided with an armature, the other side of the short stator is provided with a magnetic pole, the armature and the magnetic pole are fixed to a working platform, relatively rest, are independent from each other and are located on the different sides of the rotor. The long rotor is located between the two stator bodies. The advantages of a flux switching structure are achieved, and the defects that the magnetic pole is difficultly radiated, and a magnetic circuit and a circuit compete with each other are effectively avoided. The short stator armature portion is directly fixed to the working platform, the short stator magnetic pole portion is fixed to a long shaft, and a required gas length is kept between the long rotor and the short stator through a sliding bearing. According to the asymmetric double-stator cylindrical permanent magnet linear motor, the armature and the magnetic pole are used as the stator bodies in the short stator, so that the usage of a permanent magnet is greatly reduced, the radiating condition of the permanent magnet is not affected, and the asymmetric double-stator cylindrical permanent magnet linear motor is applicable to application occasions where the low-cost linear motion is needed in the fields of industry, civil use, medicine and the like.
Description
Technical field
The invention belongs to synchronous motor technical field, and in particular to a kind of asymmetric bimorph transducer cylinder type permanent magnet linear electricity
Machine.
Background technology
Cylinder type permanent magnet linear synchronous motor has the advantage of magneto and linear electric motors concurrently, and electric energy is directly changed into directly
Line motion mechanical energy, it is not necessary to middle double-action part, not by centrifugal forces affect, with simple structure, lightweight, small volume, height
The remarkable advantages such as fast high accuracy, high efficiency, high thrust, guiding convenience, obtain extensively in fields such as semiconductor machining, food processings
Using.Cylinder type permanent magnet linear synchronous motor typical structure is as shown in Figure 1.
The operation principle of cylinder type permanent magnet linear synchronous motor is as described below：When armature winding is passed through alternating current, just exist
Armature field is produced in air gap.Meanwhile, magnetic pole permanent magnet produces excitation field.The armature field is closed with permanent magnet excitation magnetic field
Into composition air-gap field.Magnetic pole or armature, armature travelling-magnetic-field and permanent magnet excitation magnetic field geo-stationary are dragged during starting, so as to
Electric current in armature winding produces electromagnetic push in the presence of the air-gap field.If armature is fixed, magnetic pole is in thrust
Pull under effect and move along a straight line；Conversely, then armature pulls in and moves along a straight line.
The restriction of cylinder type permanent magnet linear synchronous motor popularization and application is cost, because either being tied using long armature
Structure, or long field structure, holistic cost are all very high.For reduces cost, existing method be using cylindrical switching magnetic linkage forever
Magnetic linear synchronous generator, is placed on permanent magnet on armature, and its permanent magnet consumption is less, and armature length is not also long, and cost is significantly
Reduce, but also bring new problem：On the one hand it is that permanent magnet is surrounded by coil, radiating condition is too poor；Another aspect groove area with
Permanent magnet conditions each other, and pushing force density is restricted.
The content of the invention
For the above-mentioned technical problem existing for prior art, the invention provides a kind of asymmetric bimorph transducer cylinder type is forever
Magnetic linear electric motors, can either make permanent magnet separate with armature, can reduce the length of the consumption and armature of permanent magnet again.
A kind of asymmetric bimorph transducer cylinder permanent magnetic line motor, including short stator and long mover；
Inside and outside bimorph transducer of the described short stator using dissymmetrical structure, magnetic pole of the inner stator for cylinder type, external stator is
The armature of cylinder type, and both keep certain air gap between long mover；
Described armature includes armature core and the armature winding being sheathed on armature tooth, described magnetic for dentalation
Extremely radial magnetizing structure or axial charging structure；
Described armature adopts semi-enclosed slot or adopts open slot, and armature tooth is towards long mover；If armature adopts semi-closure
Mouth groove, then armature teeth portion is with crown；If armature adopts open slot, armature teeth portion is without crown；
Described armature core is spliced by multiple iron core units vertically and constitutes, and described iron core unit is compound using soft magnetism
Material is once stamping or is radially overrided to form using T-shaped silicon steel punching；If iron core unit adopts T-shaped silicon steel punching,
Which is at least divided into 4 sections in circumferencial direction；
If magnetic pole is axial charging structure, which is arranged alternately and is constituted by some pieces of pole cores and permanent magnet, described
The magnetizing direction of permanent magnet is axial direction, i.e., consistent with the direction of motion of long mover；
If magnetic pole be radial magnetizing structure, its by a cylinder type pole core and some pieces be attached at pole core
Above and towards the compact arranged set of permanent magnets of long mover into the magnetizing direction of the permanent magnet is radial direction, the i.e. fortune with long mover
Dynamic direction is vertical；
Described long mover is made up of by uniform intervals are axially aligned the adjustable magnetic iron block of multiple circular ring types, and adjustable magnetic iron block
Number N and armature number of teeth M meet following relation：N=kM ± 1 or N=kM ± 2, k are the natural number more than 0.
Described permanent magnet number is the integral multiple of integral multiple or armature number of teeth M for permanent magnet number of armature number of teeth M；If
Both numbers are identical, then the centrage of each permanent magnet is alignd with the centrage of corresponding armature slot.
Described permanent magnet is N poles and S poles and is alternately arranged.
Described long mover is to inject between two neighboring adjustable magnetic iron block after the filling of liquid non-magnet material using isolating construction
Solidification inserts non-magnet material ring as interval, then is fixed by stay bolt realization.
It is preferred that liquid non-magnet material filling solidify afterwards, can improve the intensity of machining accuracy and mover.
Described armature winding adopts pie winding, and the coil number of each armature slot is 1～2.
Described short stator is fixed on work platformses；Wherein, external stator is installed on work platformses by fixed support；
Inner stator by through on a major axis, be fixed on work platformses by major axis two ends.
The short stator of motor of the present invention is bimorph transducer dissymmetrical structure, is armature, and another side is magnetic pole, and both are respectively
It is fixed on work platformses, both geo-stationaries are again separate, is respectively at the different edge of mover, long mover is short in two
The advantage of magnetic flux suitching type structure between stator, had both been realized, difficult magnetic pole radiating, magnetic circuit and circuit had also been effectively prevent mutual
The shortcoming of competition；Therefore the Advantageous Effects of hinge structure of the present invention are as follows：
(1) asymmetric bimorph transducer cylinder permanent magnetic line motor of the invention armature and magnetic pole respectively as in short stator
One stator, so as to not only substantially reduce the consumption of permanent magnet, and does not affect the radiating condition of permanent magnet, it is adaptable to work
Industry, civilian, medical etc. need the application scenario of low cost linear motion, such as semiconductor machining, food processing etc..
(2) long mover of the invention is only made up of adjustable magnetic iron block, low cost, it is easy to accomplish modularity.
(3) armature in asymmetric bimorph transducer of the invention is identical with common cylinder permanent magnetic line motor with field structure,
It is easy to process, low cost.
Description of the drawings
Fig. 1 is the structural representation of existing Tubular PM Linear Synchronous Motor.
Fig. 2 is that the first of motor of the present invention implements structure overall schematic.
Armature schematic diagrams of the Fig. 3 for silicon steel punching structure.
Fig. 4 is second enforcement structural representation of motor of the present invention.
Fig. 5 is that the third of motor of the present invention implements structural representation.
Fig. 6 is the 4th kind of enforcement structural representation of motor of the present invention.
Fig. 7 is the 5th kind of enforcement structural representation of motor of the present invention.
Specific embodiment
In order to more specifically describe the present invention, below in conjunction with the accompanying drawings and specific embodiment is to technical scheme
It is described in detail.
Embodiment one：
As shown in Fig. 2 the asymmetric bimorph transducer cylinder permanent magnetic line motor overall schematic of the present embodiment, short stator
Pole parts are installed on a major axis 3 of inside, are fixed by the bolt 223 at two ends, and work is fixed on by support in major axis two ends
Make platform 4；Separate after liquid filling body non-magnet material solidify afterwards between long mover adjustable magnetic iron block, or directly by non-magnetic ring point
Every perforate in adjustable magnetic iron block is fixed by stay bolt 14, then installs sliding bearing 13 at 1 two ends of long mover, with short stator magnetic
Pole part 22 keeps air gap constant；The armature portion of short stator is directly fixed on work platformses 4 by support 213, with long mover 1
Between keep air gap it is constant.
Asymmetric bimorph transducer cylinder permanent magnetic line motor adopts radial magnetizing formula structure, including long mover 1 and short stator
2, short stator 2 includes external stator armature 21, inner stator magnetic pole 22, and external stator armature 21 includes armature core 211 and armature winding
212, in inner stator magnetic pole 22, permanent magnet 221 is attached on pole core 222, places two pieces of permanent magnets, closely under each armature tooth
Arrangement, opposite polarity, magnetizing direction are perpendicularly to the direction of movement, and adjacent permanent magnet magnetizing direction is conversely, permanent magnet center line and armature
Groove center line is consistent, and long mover adjustable magnetic iron block number differs 1 with the short stator armature number of teeth.
Armature core 211 can adopt silicon steel material, formed by T-shaped punching is radially superposed, be divided in terms of cylinder 4 sections or
Multistage, one armature core unit of composition, T-shaped developing apron crown when flute profile is semi-enclosed slot, in open slot, punching is without tooth
Point；Soft magnetism SMC material can also be adopted, armature core unit is then once stamping, and armature core unit is handed over armature winding
For in axial close-packed arrays, armature is constituted.Fig. 3 shows the armature 21 during silicon steel material, an armature core unit and
Corresponding T-shaped punching.
Long mover 1 is made up of multiple detached adjustable magnetic iron blocks 11, between interior external stator, 11 mid portion of adjustable magnetic iron block
Liquid filling body non-magnet_conductible material 12 is separated after solidifying；Or be directly separated by not magnetic guiding loop 12, then carried out by stay bolt
It is fixed.
The present embodiment in the form of short stator, the permanent magnet flux linkage on short stator, after long mover, into armature
In, with armature winding intersecting chain, it is clear that when short stator is different from long mover relative position, the magnetic linkage interlinked in armature winding exists
Change, produce in armature winding and be close to sinusoidal counter electromotive force, therefore three phase sine voltage is passed through in armature winding
Afterwards, corresponding three phase sine electric current will be produced, so as to produce electromagnetic push, thrust mover realizes linear motion.
The operation principle of asymmetric bimorph transducer cylinder permanent magnetic line motor in the present embodiment：In short stator armature slot with
Permanent magnet aligns, when long mover adjustable magnetic iron block is alignd with armature tooth, the short circuit of permanent magnet magnetic chain warp adjustable magnetic iron block, and armature winding magnetic
Chain is zero；As mover is moved, its magnetic linkage increases, when adjustable magnetic iron block edge with armature tooth centre position with aliging when, permanent-magnet magnetic
Chain warp toning magnet piece fully enters armature, interlinks with armature winding, reaches maximum；Mover is continued to move to, and magnetic linkage starts to subtract
Little, when long mover adjustable magnetic iron block is fully removed armature tooth, armature tooth is exactly between two adjustable magnetic iron blocks, permanent magnet flux linkage
By this two pieces of adjustable magnetic iron block short circuits, armature interlinkage magnetic linkage reaches minima；Again as mover is moved, magnetic linkage opposite direction increases, when
Movement is when aliging with armature tooth again, exactly the contrary permanent magnet of opposite magnetic, and permanent magnet flux linkage reaches minima, it is clear that magnetic linkage
It is positive and negative alternation, essentially sinusoidal pattern is bipolarity magnetic linkage.
Embodiment two：
As shown in figure 4, the characteristics of the present embodiment being：Long mover adjustable magnetic iron block number differs 2 with short stator armature slot number, its
It is remaining identical with example one, radial magnetizing formula structure is also adopted by, asymmetric bimorph transducer cylinder permanent magnetic line motor in the present embodiment
Operation principle it is identical with embodiment one, with the change of rotor position, the positive and negative alternation of the magnetic linkage in armature winding, essentially just
Chordwise, is bipolarity magnetic linkage.
Embodiment three：
As shown in figure 5, the characteristics of the present embodiment being：Short stator permanent magnet number is 2 times of the short stator armature number of teeth, its
It is remaining identical with embodiment two, it is also adopted by radial magnetizing formula structure.
In the present embodiment, the operation principle of asymmetric bimorph transducer cylinder permanent magnetic line motor is identical with embodiment one, with
The change of rotor position, the positive and negative alternation of the magnetic linkage in armature winding, essentially sinusoidal pattern are bipolarity magnetic linkages.
Example IV：
As shown in fig. 6, the characteristics of the present embodiment being：Using axial charging formula structure, inner stator magnetic pole 22 includes permanent magnetism
Body 221 and pole core 222 are alternately arranged composition, adjacent permanent magnet magnetizing direction conversely, magnetizing direction is consistent with the direction of motion,
Armature 21 is separately fixed on work platformses with magnetic pole 22, and both remains stationaries, and two short stators are all kept with long mover 1
Certain gas length.The short stator armature number of teeth is identical with the number of poles of permanent magnetism magnetic pole, permanent magnet centrage and armature slot on position
Alignment, long mover adjustable magnetic iron block number differ 1 with the short stator armature number of teeth.
In the present embodiment, the operation principle of asymmetric bimorph transducer cylinder permanent magnetic line motor is identical with embodiment one, with
The change of rotor position, the positive and negative alternation of the magnetic linkage in armature winding, essentially sinusoidal pattern are bipolarity magnetic linkages.
Embodiment five：
As shown in fig. 7, the characteristics of the present embodiment being：Long mover adjustable magnetic iron block number differs 2 with the short stator armature number of teeth, its
It is remaining identical with example four, it is also adopted by using axial charging formula structure.
In the present embodiment, the operation principle of asymmetric bimorph transducer cylinder permanent magnetic line motor is identical with embodiment one, with
The change of rotor position, the positive and negative alternation of the magnetic linkage in armature winding, essentially sinusoidal pattern are bipolarity magnetic linkages.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply this
It is bright.Person skilled in the art obviously easily can make various modifications to above-described embodiment, and described herein
General Principle is applied in other embodiment without through performing creative labour.Therefore, the invention is not restricted to above-described embodiment,
Those skilled in the art's announcement of the invention, the improvement made for the present invention and modification all should be in the protections of the present invention
Within the scope of.
Claims (2)
1. a kind of asymmetric bimorph transducer cylinder permanent magnetic line motor, including short stator and long mover；It is characterized in that：Described
Inside and outside bimorph transducer of the short stator using dissymmetrical structure, magnetic pole of the inner stator for cylinder type, armature of the external stator for cylinder type, and
Both keep certain air gap between long mover；
Described armature includes armature core and the armature winding being sheathed on armature tooth for dentalation, and described magnetic pole is
Radial magnetizing structure or axial charging structure；
Described armature adopts semi-enclosed slot or adopts open slot, and armature tooth is towards long mover；If armature adopts semi-enclosed slot,
Then armature teeth portion is with crown；If armature adopts open slot, armature teeth portion is without crown；
Described armature core is spliced by multiple iron core units vertically and constitutes, and described iron core unit adopts soft-magnetic composite material
It is once stamping or be radially overrided to form using T-shaped silicon steel punching；If iron core unit adopt T-shaped silicon steel punching, its
Circumferencial direction is at least divided into 4 sections；
If magnetic pole is axial charging structure, which is arranged alternately and is constituted by some pieces of pole cores and permanent magnet, the permanent magnetism
The magnetizing direction of body is axial direction, i.e., consistent with the direction of motion of long mover；
If magnetic pole be radial magnetizing structure, its by a cylinder type pole core and some pieces be attached on pole core and
Towards the compact arranged set of permanent magnets of long mover into the magnetizing direction of the permanent magnet is radial direction, i.e. the motion side with long mover
To vertical；
Described long mover is made up of by uniform intervals are axially aligned the adjustable magnetic iron block of multiple circular ring types, and adjustable magnetic iron block number
N and armature number of teeth M meet following relation：N=kM ± 1 or N=kM ± 2, k are the natural number more than 0；
Described permanent magnet number is the integral multiple of integral multiple or armature number of teeth M for permanent magnet number of armature number of teeth M；If both
Number is identical, then the centrage of each permanent magnet is alignd with the centrage of corresponding armature slot；
Described long mover is that liquid non-magnet material filling solidify afterwards are injected between two neighboring adjustable magnetic iron block using isolating construction
Or insertion non-magnet material ring is realized fixing as interval, then by stay bolt；
Described armature winding adopts pie winding, and the coil number of each armature slot is 1～2；
Described short stator is fixed on work platformses；Wherein, external stator is installed on work platformses by fixed support；It is default
Son by through on a major axis, be fixed on work platformses by major axis two ends.
2. asymmetric bimorph transducer cylinder permanent magnetic line motor according to claim 1, it is characterised in that：Described permanent magnetism
Body is N poles and S poles and is alternately arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510010254.6A CN104578635B (en) | 2015-01-09 | 2015-01-09 | Asymmetric double-stator cylindrical permanent magnet linear motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510010254.6A CN104578635B (en) | 2015-01-09 | 2015-01-09 | Asymmetric double-stator cylindrical permanent magnet linear motor |
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| CN104578635A CN104578635A (en) | 2015-04-29 |
| CN104578635B true CN104578635B (en) | 2017-04-12 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018018671A1 (en) * | 2016-07-26 | 2018-02-01 | 江苏大学 | Fault-tolerant permanent-magnet vernier cylindrical electric motor with electromagnetic suspension and fault-tolerant vector control method for short circuit of two adjacent phases |
| CN106505821A (en) * | 2016-09-19 | 2017-03-15 | 江苏大学 | A kind of primary permanent magnet vernier linear electric motors and its dividing method |
| CN108306479B (en) * | 2018-01-22 | 2019-06-25 | 南京理工大学 | Armature and permanent magnetism magnetic yoke sports type permanent-magnetism linear motor and its operation method simultaneously |
| CN109586433B (en) * | 2018-11-27 | 2021-02-09 | 东南大学 | Modularized rotary linear flux switching permanent magnet motor |
| CN110011512B (en) * | 2019-03-06 | 2021-02-23 | 江苏大学 | Primary permanent magnet type magnetic field modulation linear motor |
| CN113178999B (en) * | 2021-04-28 | 2024-04-19 | 华中科技大学 | Stator permanent magnet type linear oscillating motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101982929A (en) * | 2010-10-28 | 2011-03-02 | 哈尔滨工业大学 | High dynamic and short stroke linear oscillating motor |
| CN102195440A (en) * | 2010-03-11 | 2011-09-21 | 株式会社安川电机 | Linear motor |
| CN104242596A (en) * | 2014-09-11 | 2014-12-24 | 浙江大学 | Asymmetric double-side type permanent magnet straight line synchronous motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013215021A (en) * | 2012-03-30 | 2013-10-17 | Kogakuin Univ | Electromagnetic induction device |
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- 2015-01-09 CN CN201510010254.6A patent/CN104578635B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102195440A (en) * | 2010-03-11 | 2011-09-21 | 株式会社安川电机 | Linear motor |
| CN101982929A (en) * | 2010-10-28 | 2011-03-02 | 哈尔滨工业大学 | High dynamic and short stroke linear oscillating motor |
| CN104242596A (en) * | 2014-09-11 | 2014-12-24 | 浙江大学 | Asymmetric double-side type permanent magnet straight line synchronous motor |
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