CN201994889U - Magnetic suspension double side reluctance-driving direct linear transmission device - Google Patents
Magnetic suspension double side reluctance-driving direct linear transmission device Download PDFInfo
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Abstract
The utility model discloses a magnetic suspension double side reluctance-driving direct linear transmission device. The device mainly comprises a linear double side long frame, a double side long stator linear reluctance motor, a motion platform, a stator frame fixing and connecting rod, a rotor interphase connecting rod, rectilinear motion displacement sensing rulers, an auxiliary support guide rail pair, suspension airgap detecting sensors, a radiator fan, etc. The magnetic suspension supports the multiplexing of a magnetic-conductive loop and a linear reluctance motor stator and rotor magnetic-conductive loop, the frame is not needed to play a magnetic-conducting role, and moving elements have no permanent magnets and do not need an external power supply. The utility model has the advantages of simple and compact structure, low manufacturing cost, high power volume ratio, large electromagnetic thrust, short magnetic path, good interphase encapsulation, strong fault-tolerance capability, zero-friction running, etc.
Description
Technical field
The utility model relates to fields such as a kind of direct-drive type transmission, linear reluctance motor and magnetic levitation technology, is specifically related to the direct linear actuator of the bilateral magnetic resistance drive-type of a kind of magnetic suspension.
Background technology
" zero transmission " characteristic of linear electric motors Direct Driving System, the gap that the traditional line reciprocating motion is brought by machine driving, flexibility and associated other problem have been eliminated, simplify apparatus structure, improved transmission accuracy and speed, be subjected to people's generally attention.
At present, normal alternating current impression formula linear electric motors and the permanent magnetic linear synchronous motor that adopts of high-power direct linear transmission exists starting difficulty, speed control device complexity, power factor and problems such as efficient is low, complete machine manufacturing cost height, fault-tolerant operation ability.The magnetic resistance type linear motor is as a kind of novel drive motors, have low cost of manufacture, starting performance good (the little electric current of high thrust), power density height, the stepless time adjustment performance is good, electromechanical efficiency is high, easy four quadrant running, can adapt to adverse circumstances etc., American-European-Japanese developed industrial country relevant technology of exploitation competitively that waits.As Russian Emetron company with German Paderborn university cooperation research and development based on 6 12/10 structure magnetic resistance type linear motor-driven " RailCab " railway locomotive model machines mutually; People such as the Hong S L of the state Institute of Technology of Virginia, The United States have developed based on the motor-driven vertical drive electric hoist of 3 phase 6/4 structure magnetic resistance type linears model machine; People from Japan such as Yokohama Sato Y of national university discuss and theoretical validation 3 mutually 6/4 structure magnetic resistance type linear motor as the feasibility of 2DOF precision positioning workbench drive motors etc.But comprehensive literature as can be known, the version of existing magnetic resistance type linear motor is mainly the straight line expansion mode of rotary-type reluctance motor, this kind structure causes the electromagnetism flux circuit path length between motor stator and mover, need the support magnetic conduction, and magnetic circuit is open, has formed inter-phase electromagnetic degree of coupling height, magnetic hysteresis loss is big and external electromagnetic interference is strong undesirable feature thus, therefore, be necessary further to improve the version of magnetic resistance type linear motor, to reduce magnetic flux path and closed magnetic path.
In addition, in the linear actuator of linear electric motors direct drive mode, friction between moving-member and the traditional mechanical support rails is the principal element that influences driveability, and therefore, the harmful effect of eliminating the rail friction generation is the key that improves direct linear transmission.The support rails of using the magnetic suspension form is a usual way of eliminating friction, a kind of commercial Application type active magnetic suspension machine tool guideway linear electric motors feeding platform that for example proposes among the patent documentation ZL200310107945.5, a kind of intelligent magnetic suspension linear feeding unit that proposes among the patent documentation ZL200710026069.1 all adopts the magnetic suspension bearing guide rail of 6DOF to eliminate friction in the direct linear transmission process.But this type of magnetic suspension system is owing to introduced magnetic suspension functional part relatively independent on the mechanical structure, as magnetic conductive loop of carrying electromagnet, guiding electromagnet and these electromagnet of special use etc., caused the volume and the gross mass of device to increase, it is complicated that mechanical structure is tending towards, mechanical part increases, and power to volume ratio descends; Simultaneously, because the quality of moving component and volume increase, cause that dynamic responding speed reduces, and suppressed the further raising of critical line of motion speed in theory.Therefore, similitude according to magnetic suspension bearing electromagnetic structure and linear motor stator electric electromagnetic structure, research magnetic suspension bearing magnetic conductive loop and linear electric motors rotor magnetic conductive loop are multiplexing, and the direct linear actuator of the magnetic suspension of cramped construction has good engineering Practical significance.
The utility model content
It is a kind of simple and compact for structure that the purpose of this utility model is to provide, and electromagnetic push is big, and magnetic circuit path is short and alternate closure is good, the direct linear actuator of the bilateral magnetic resistance drive-type of the magnetic suspension that fault-tolerant ability is strong.
Technical solution of the present utility model is:
The direct linear actuator of the bilateral magnetic resistance drive-type of a kind of magnetic suspension is characterized in that: the stator of bilateral long stator linear reluctance motor is connected with the bilateral lead aircraft seat of linear pattern by the out frame fixed connecting rod; The mover of bilateral long stator linear reluctance motor is connected with the motion plummer by the alternate connecting rod of mover; The moving chi parts of rectilinear motion displacement sensing chi are connected with the bilateral lead aircraft seat of motion plummer and linear pattern respectively with quiet chi parts; A cover aiding support guideway is respectively installed in both sides between the bilateral lead aircraft seat of motion plummer and linear pattern, wherein, the bilateral lead aircraft seat fixed installation of the quiet guide rail of aiding support guideway and linear pattern, the moving guide rail of aiding support guideway and the fixed installation of motion plummer, one group of radiator fan is all installed at the two ends at the whole story of the bilateral lead aircraft seat of linear pattern; Every phase stator of described bilateral long stator linear reluctance motor is made up of the stator core and the separate stator coil winding of 4 covers in this stator core of " E " shape, each " E " shape stator core is overrided to form by the electrical sheet of one group of " E " tee section, at 3 disconnected cross section ends of " E " shape stator core opening part 1 suspension air gap detecting sensor is installed respectively; Every phase promoter of described bilateral long stator linear reluctance motor only is made up of the mover core of a rectangle, and each rectangle mover core is overrided to form by the electrical sheet of one group of square-section.
The quiet guide rail longitudinal section of one cover aiding support guideway is " recessed " shape.
The stator of described bilateral long stator linear reluctance motor is bilateral n phase, n 〉=4, and mover is bilateral n-1 phase; The mounting arrangement of stator and mover is the right and left symmetrical structure, and a pair of " E " shape stator core opening on both sides in opposite directions under the same longitudinal section; On mover seesawed direction, each phase stator was equidistantly arranged, and each phase promoter is also equidistantly arranged, and the gap length between each phase stator and the ratio of the gap length between each phase promoter equal the ratio of the mover number of phases and the stator number of phases.
The alternate connecting rod with mover of described out frame fixed connecting rod is made by non-magnet material.Described bilateral long stator linear reluctance motor magnetic circuit closed within each phase stator core and mover core.
The separate stator coil winding of in the stator core of described " E " shape 4 cover is categorized as: partly and by the magnetic suspension air gap that 3 cover coil windings are formed control the winding part by the motor electromagnetic thrust winding that 1 cover coil windings is formed.Motor electromagnetic thrust winding part is made up of 1 cover coil windings, and its function is: the exciting current control by to this coil windings, realize mover and motion plummer seesawing on Z-direction; Magnetic suspension air gap control winding part is made up of all the other 3 cover coil windings, and its function is: by the exciting current control to this 3 cover coil windings, realize the suspension air gap control on X-axis and Y direction of mover and motion plummer.
On the device Z-direction, by the real-time displacement feedback of rectilinear motion displacement sensing chi to the motion plummer, can obtain the relative position between bilateral each phase promoter of long stator linear reluctance motor and the corresponding stator, according to the motion plummer direction of motion (Z axle positive direction or Z axle negative direction) and the speed that " magnetic resistance minimum " control principle of reluctance motor and user need, can calculate the sequential and the amplitude of the required excitation Control current of each phase stator motor electromagnetic push winding of bilateral long stator linear reluctance motor.
On device X-Y axial plane, by and stator relative fixed a plurality of suspension air gap detecting sensors of installing to the real-time detection of air-gap separation size between mover and stator, can obtain mover levitation position with respect to stator on X-axis and Y direction, according to the Differential Control principle of suspension air gap in the magnetic levitation technology, can calculate the amplitude and the direction of the required excitation Control current of magnetic suspension air gap control winding on each phase stator.
According to above-mentioned control principle, during the direct linear actuator operate as normal of the bilateral magnetic resistance drive-type of magnetic suspension, can realize not having friction, high acceleration, at a high speed, high thrust, linearity directly drive operation.
The aiding support guideway is when device quits work, and when work burst mechanical breakdown or outage etc. are in particular cases, play aiding support and the guide effect on the X-Y direction of principal axis of mover and motion plummer.
Advantage of the present utility model is:
(1) aspect the magnetic suspension bearing characteristic, magnetic suspension air gap control winding and the shared stator core of motor electromagnetic thrust winding have realized the unification of magnetic suspension functional part and stator component mechanical structure, have improved utilance unshakable in one's determination, greatly simplify mechanical structure, reduced device volume.
(2) aspect the magnetic excitation circuit characteristic, the excited work magnetic circuit of the motor electromagnetic thrust winding of linear electric motors and magnetic suspension air gap control winding all is confined to single " E " shape stator core and corresponding mover core inside thereof, need not miscellaneous part magnetic conductions such as support, magnetic circuit is the enclose inside state, and therefore, the magnetic circuit closed path is short, magnetic hysteresis loss is little, the inter-phase electromagnetic degree of coupling is low, and externally electromagnetic interference is few, has saved every the magnetic protecting component.
(3) in the moving component configuration aspects, the moving component of device is formed by passive component, need not externally fed or pulls lead (hinge), and simple in structure firm, movement inertia is little, can realize high-speed motion.
(4) aspect device performance and manufacturing cost, reluctance motor, magnetic suspension and straight-line advantage have been had concurrently; Complete machine does not have permanent magnetic material, and is simple in structure, and manufacture difficulty is little, and power to volume ratio is big, and cost is low; Motor (support) inner space is big, and heat radiation is convenient.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the apparatus structure front view of an embodiment of the utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the left view of Fig. 1.
At Fig. 1, among Fig. 2 and Fig. 3: the bilateral lead aircraft seat of 1 linear pattern, 2 out frame fixed connecting rods, the stator of 3 bilateral long stator linear reluctance motors, the mover of 4 bilateral long stator linear reluctance motors, the alternate connecting rod of 5 movers, 6 motion plummers, the quiet chi of 7 rectilinear motion displacement sensing chis, the moving chi of 8 rectilinear motion displacement sensing chis, the quiet guide rail of 9 aiding support guideways, the moving guide rail of 10 aiding support guideways, 11 suspension air gap detecting sensors, 12 stator coil windings, 13 radiator fans.
Fig. 4, Fig. 5, Fig. 6 are in Fig. 1 example, the magnetic line of force distribution schematic diagram of 4 kinds of magnetic excitation circuit of stator coil winding.
Among Fig. 4, Fig. 5, Fig. 6, the direction of arrow represents respective coil after excitation, the magnetic line of force direction of generation.
Above accompanying drawing is to illustrate with the direct linear actuator structure of the bilateral magnetic resistance drive-type of magnetic suspension that is made of bilateral four phase long stator linear reluctance motors (be that stator is bilateral four phases, mover is bilateral three-phase).According to the basic principle of reluctance motor, equally applicable to the direct linear actuator of the bilateral magnetic resistance drive-type of magnetic suspension that adopts the more bilateral long stator linear reluctance motor of the number of phases to constitute.
Embodiment
With the direct linear actuator structure of the bilateral magnetic resistance drive-type of magnetic suspension that is made of bilateral four phase long stator linear reluctance motors is example, and the utility model is described in further detail in conjunction with the accompanying drawings.
The direct linear actuator of the bilateral magnetic resistance drive-type of described magnetic suspension is by the bilateral lead aircraft seat 1 of linear pattern, out frame fixed connecting rod 2, the stator 3 of bilateral long stator linear reluctance motor, the mover 4 of bilateral long stator linear reluctance motor, the alternate connecting rod 5 of mover, motion plummer 6, the quiet chi 7 of rectilinear motion displacement sensing chi, the moving chi 8 of rectilinear motion displacement sensing chi, the quiet guide rail 9 of aiding support guideway, the moving guide rail 10 of aiding support guideway, suspension air gap detecting sensor 11, stator coil winding 12, radiator fan 13 compositions such as grade.
Referring to accompanying drawing 1, Fig. 2 and Fig. 3, the stator 3 of bilateral long stator linear reluctance motor is connected with the bilateral lead aircraft seat 1 of linear pattern by out frame fixed connecting rod 2; The mover 4 of bilateral long stator linear reluctance motor is connected with motion plummer 6 by the alternate connecting rod 5 of mover; The moving chi parts 8 of rectilinear motion displacement sensing chi are connected with the bilateral lead aircraft seat 1 of motion plummer 6 and linear pattern respectively with quiet chi parts 7; A cover aiding support guideway is respectively installed in both sides between the bilateral lead aircraft seat 1 of motion plummer 6 and linear pattern, wherein, the quiet guide rail 9 of aiding support guideway and bilateral lead aircraft seat 1 fixed installation of linear pattern, the moving guide rail 10 of aiding support guideway and 6 fixed installations of motion plummer, in addition, wherein the quiet guide rail longitudinal section of a cover aiding support guideway is " recessed " shape, the width of this quiet guide rail " recessed " shape opening is a bit larger tham the moving guide rail longitudinal section width in it, with the displacement amplitude of fluctuation of constrained motion plummer 6 on X-direction; One group of radiator fan 13 is all installed at the two ends at the whole story of the bilateral lead aircraft seat 1 of linear pattern, makes to form certain air-flow in base inner, reaches the purpose of heat radiation.Every phase stator 3 of described bilateral long stator linear reluctance motor is made up of the stator core and the separate stator coil winding 12 of 4 covers in this stator core of " E " shape, each " E " shape stator core is overrided to form by the electrical sheet of one group of " E " tee section, at 3 disconnected cross section ends of " E " shape stator core opening part 1 suspension air gap detecting sensor 11 is installed respectively; Every phase promoter 4 of described bilateral long stator linear reluctance motor only is made up of the mover core of a rectangle, and each rectangle mover core is overrided to form by the electrical sheet of one group of square-section.
In this enforcement accompanying drawing example, the stator of bilateral long stator linear reluctance motor is bilateral four phase structures, be respectively X-axis left side SA, SB, SC, SD four phases and X-axis the right NA, NB, NC, ND four mutually, these double-sided stators are by X-direction the right and left symmetry, and the layout type of at interval consistent (this spacing is 1s in the accompanying drawing) installs and fixes before and after the Z-direction.Every phase stator is made up of the stator core and the separate stator coil winding 12 of 4 covers in this stator core of " E " shape.Each " E " shape stator core is overrided to form by the electrical sheet of one group of " E " tee section, at 3 disconnected cross section ends of " E " shape stator core opening part 1 suspension air gap detecting sensor 11 is installed respectively.A pair of " E " shape stator core opening of motor the right and left in opposite directions under the same longitudinal section.
According to the new structure of this device, can know by inference by the first principles analysis of reluctance motor, when stator was bilateral n phase (n 〉=4), mover was bilateral n-1 phase.Therefore, the mover of these bilateral four phase long stator linear reluctance motors should be bilateral three-phase.Every phase promoter only is made up of the mover core of a rectangle, does not have winding on this mover core, and each rectangle mover core is overrided to form by the electrical sheet of one group of square-section.These movers are by X-direction the right and left symmetry, and the layout type of at interval consistent (this spacing is 1m in the accompanying drawing) is arranged before and after the Z-direction.Under the same longitudinal section, 2 movers of the right and left symmetry form 1 group of bilateral mover phase, so these bilateral four phase long stator linear reluctance motors have 3 bilateral mover phase TA, TB, TC after connecting by 1 alternate connecting rod 5 of mover.The ratio of stator spacing 1s and mover spacing 1m equals the ratio of the mover number of phases and the stator number of phases, that is:
In every phase stator core 4 cover coil windings can be divided into two classes according to the function difference of its excitation control, and promptly the motor electromagnetic thrust winding of being made up of 1 cover coil windings partly and by 3 is overlapped the magnetic suspension air gap control winding part that coil windings are formed.With bilateral one group of stator and mover under the same longitudinal section is example, referring to accompanying drawing 4 to accompanying drawing 6, in the stator core of the left side 1 cover motor electromagnetic thrust winding is A1-A1 ', in the stator core of the left side 3 cover magnetic suspension air gap control winding is B1, C1 and D1,1 cover motor electromagnetic thrust winding in the stator core of the right is A2-A2 ', and the cover of 3 in the stator core of the right magnetic suspension air gap control winding is B2, C2 and D2.Now with in the right and left stator core the function and the operation principles of totally 8 cover coil windings be described below: winding A1-A1 ' and winding A2-A2 ' are a pair of motor electromagnetic thrust winding, the two powers on simultaneously and cuts off the power supply, need when powering on to carry out excitation, can make mover obtain the electromagnetic push that advances or retreat on the Z direction according to flow direction shown in Figure 4; Winding B1 and winding C1 are a pair of magnetic suspension air gap control winding, according to suspension air gap detecting sensor detected value, adopt the differential current control mode, carry out excitation according to flow direction shown in Figure 5, promptly may command left side mover is in two ends up and down and the suspension air gap y1 between corresponding stator and the value of y1 ' of Y direction; Winding B2 and winding C2 are a pair of magnetic suspension air gap control winding, according to suspension air gap detecting sensor detected value, adopt the differential current control mode, carry out excitation according to flow direction shown in Figure 5, promptly may command right side mover is in two ends up and down and the suspension air gap y2 between corresponding stator and the value of y2 ' of Y direction; Winding D1 and winding D2 are a pair of magnetic suspension air gap control winding, according to suspension air gap detecting sensor detected value, adopt the differential current control mode, carry out excitation according to flow direction shown in Figure 6, promptly the bilateral mover of may command is in the left and right sides and the suspension air gap x0 between corresponding stator and the value of x0 ' of X-direction.
The mover of bilateral long stator linear reluctance motor can obtain by the real-time displacement feedback calculation of rectilinear motion displacement sensing chi with respect to the real time position of stator.Referring to accompanying drawing 2, if this moment the motor electromagnetic thrust winding on the double-sided stator, according to left side SB → SC → SD → SA → SB sequential energising, right side NB → NC → ND → NA → NB sequential energising, then mover and motion plummer can obtain the lasting thrust on the Z axle negative direction; If the motor electromagnetic thrust winding on the double-sided stator is switched on according to left side SD → SC → SB → SA → SD sequential at this moment, right side ND → NC → NB → NA → ND sequential energising, then mover and motion plummer can obtain the lasting thrust on the Z axle positive direction.Controlled the exciting current amplitude of each motor electromagnetic thrust winding, i.e. the translational speed of may command mover and motion plummer.
The moving guide rail 10 of aiding support guideway is along with mover and motion plummer 6 same moved further.During operate as normal, because the Suspension Control effect, moving guide rail 10 and quiet guide rail 9 are contactless; When device quits work, and operating state time burst mechanical breakdown or outage etc. are in particular cases, and the moving guide rail 10 of aiding support guideway contacts with quiet guide rail 9, plays aiding support and the guide effect on the X-Y direction of principal axis of mover and motion plummer 6.
In order to guarantee that motion plummer 6 is in required stroke range, that the stator of bilateral long stator linear reluctance motor and number of phases coupled relation between the mover remain is constant (be stator be bilateral n mutually, mover is bilateral n-1 phase, n 〉=4), when device was made, actual installation can be taken as bilateral K in the stator number of phases on support both sides
1* n phase (K
1Be positive integer), the number of phases of mover is taken as bilateral K
2* (n-1) phase (K
2Be positive integer).This bilateral K
1Coil windings in the stator core of * n phase can adopt the working method of segmentation excitation, real-time displacement feedback calculation according to rectilinear motion displacement sensing chi draws the real time position of the mover of bilateral long stator linear reluctance motor with respect to stator, form on the interval of relative position coupling at stator and mover, according to aforesaid operation principle, corresponding motor electromagnetic push winding and magnetic suspension air gap control winding to this interval inner stator coil carry out excitation, can realize the direct linear transmission operation of the magnetic suspension of motion plummer 6 in long stroke range.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201376644U CN201994889U (en) | 2011-05-04 | 2011-05-04 | Magnetic suspension double side reluctance-driving direct linear transmission device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201376644U CN201994889U (en) | 2011-05-04 | 2011-05-04 | Magnetic suspension double side reluctance-driving direct linear transmission device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185459A (en) * | 2011-05-04 | 2011-09-14 | 南通大学 | Magnetic suspension bilateral magnetic resistance driving type direct linear transmission device |
| CN103929041A (en) * | 2014-04-29 | 2014-07-16 | 江苏大学 | A magnetic levitation permanent magnet linear motor |
| CN106516758A (en) * | 2015-07-13 | 2017-03-22 | 南通大学 | Self-driven type magnetic levitation curved and straight compound circulation type conveying unit with application field expanded |
| CN115189545A (en) * | 2022-07-22 | 2022-10-14 | 北京交通大学 | Suspended and guided self-stabilizing enhanced linear induction motor |
-
2011
- 2011-05-04 CN CN2011201376644U patent/CN201994889U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185459A (en) * | 2011-05-04 | 2011-09-14 | 南通大学 | Magnetic suspension bilateral magnetic resistance driving type direct linear transmission device |
| CN102185459B (en) * | 2011-05-04 | 2012-10-31 | 南通大学 | Magnetic Suspension Bilateral Reluctance Driven Direct Linear Actuator |
| CN103929041A (en) * | 2014-04-29 | 2014-07-16 | 江苏大学 | A magnetic levitation permanent magnet linear motor |
| CN106516758A (en) * | 2015-07-13 | 2017-03-22 | 南通大学 | Self-driven type magnetic levitation curved and straight compound circulation type conveying unit with application field expanded |
| CN106516758B (en) * | 2015-07-13 | 2018-08-10 | 南通大学 | Expand the right and wrong combined-circulation type transmission unit of self-driving type magnetic suspension of application field |
| CN115189545A (en) * | 2022-07-22 | 2022-10-14 | 北京交通大学 | Suspended and guided self-stabilizing enhanced linear induction motor |
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