CN203933441U - Realize the linear electric machine of three grades of controls based on iron gallium alloy - Google Patents

Realize the linear electric machine of three grades of controls based on iron gallium alloy Download PDF

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Publication number
CN203933441U
CN203933441U CN201420180687.7U CN201420180687U CN203933441U CN 203933441 U CN203933441 U CN 203933441U CN 201420180687 U CN201420180687 U CN 201420180687U CN 203933441 U CN203933441 U CN 203933441U
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China
Prior art keywords
gallium alloy
coil
iron gallium
annular permanent
core
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Expired - Fee Related
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CN201420180687.7U
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Chinese (zh)
Inventor
夏永明
张丽慧
陆凯元
方攸同
燕龙
潘海鹏
雷美珍
滕伟峰
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Abstract

The utility model discloses a kind of linear electric machine of realizing three grades of controls based on iron gallium alloy, comprise stator core, linear axis and brake; Linear axis is set in stator core; Described linear axis comprises magnetostrictive material, at the left and right two ends of magnetostrictive material, conducting magnet core is set respectively; On the conducting magnet core at left and right two ends, be respectively arranged with annular permanent-magnet body I and annular permanent-magnet body II; Correspond to iron gallium alloy, annular permanent-magnet body I and annular permanent-magnet body II, in stator core, be respectively arranged with fine motion coil, long stroke coil II and long stroke coil I; Brake comprises left side brake and right side brake; Described left side brake and right side brake are separately positioned on the conducting magnet core in left side and the conducting magnet core on right side.

Description

Realize the linear electric machine of three grades of controls based on iron gallium alloy
Technical field
The utility model relates to a kind of long stroke high position precision linear electric machine, especially a kind of linear electric machine of realizing three grades of controls based on iron gallium alloy.
Background technology
Now, the method for the long stroke high position precision of realization mainly contains following four kinds:
First method is to utilize driven by servomotor leading screw to realize long stroke location, piezoelectric ceramic or magnetic telescopic driver is installed on leading screw slide unit and realizes high-precision micro displacement location; This method has long stroke fast response time, the advantage that positioning precision is high; Patent (application number: CN201210340082 publication number: CN102830711A) is to adopt to realize in this way long stroke high position precision.
Second method is directly to utilize piezoelectric ceramic or magnetic telescopic driver first to adopt worm motion mode to realize long stroke location, then utilizes piezoelectric ceramic or magnetostrictive material to realize high-precision micro displacement location; This method utilizes piezoelectric ceramic or magnetic telescopic driver step motion to realize long stroke location.Because piezoelectric ceramic or magnetic telescopic driver step distance are little, need high-frequency signal to realize rapid movement.Patent (application number: CN200410072545 publication number: CN100388612C; Application number: CN200510013559; Publication number CN1693028A; Application number: CN200820155609 publication number: CN201294459Y) be all to adopt in this way, utilize piezoelectric ceramic to realize large range nanometer grade step.
The third method is to utilize linear electric motors to realize long stroke location, piezoelectric ceramic or magnetic telescopic driver is installed on linear electric motors motion slide unit and realizes high-precision micro displacement location.Linear electric motors in this method have higher response speed, realize long-travel high-accuracy location with piezoelectric ceramic or magnetic telescopic driver.Patent (application number: CN201010230855 publication number: CN101924450A) is that profit adopts linear voice coil motor to realize long stroke high position precision in this way.
The 4th kind of method be adopt piezoelectric ceramic or other intellectual materials to realize certain stroke and high precision in conjunction with displacement amplifying mechanism and guiding mechanism to locate this method be to adopt piezoelectric ceramic to realize certain stroke and high precision location in conjunction with displacement amplifying mechanism and guiding mechanism.Patent (application number: CN201310145711 publication number: CN103225728A; Application number: CN201210390352 publication number: CN102922309A) adopt and realize in this way two-dimensional parallel micromotion platform.
Above-mentioned four kinds of methods can realize long-travel high-accuracy location, but first method and the third method are that long stroke positioning mechanism and microposition mechanism are structurally separate, cause whole mechanism volume edema, complex structure; And second method realizes the speed of large stroke response lower than first method; The 4th kind of method can only realize limited large stroke.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of linear electric machine of realizing three grades of controls based on iron gallium alloy simple in structure.
In order to solve the problems of the technologies described above, the utility model provides a kind of linear electric machine of realizing three grades of controls based on iron gallium alloy, comprises stator core, linear axis and brake; Linear axis is set in stator core; Described linear axis comprises magnetostrictive material, and the left and right two ends of magnetostrictive material arrange respectively conducting magnet core; On the conducting magnet core at described left and right two ends, be respectively arranged with annular permanent-magnet body I and annular permanent-magnet body II; Correspond to iron gallium alloy, annular permanent-magnet body I and annular permanent-magnet body II, in stator core, be respectively arranged with fine motion coil, long stroke coil II and long stroke coil I; Described brake comprises left side brake and right side brake; Described left side brake and right side brake correspond respectively on the conducting magnet core in left side and the conducting magnet core on right side.
As the described improvement that realizes the linear electric machine of three grades of controls based on iron gallium alloy: the magnetic pole of described annular permanent-magnet body I and annular permanent-magnet body II is contrary.
As the described further improvement that realizes the linear electric machine of three grades of controls based on iron gallium alloy: described magnetostrictive material are iron gallium alloy.
As the described further improvement that realizes the linear electric machine of three grades of controls based on iron gallium alloy: described brake comprises the electromagnet of flexible hinge and sucked type; Flexible hinge is fixed on exterior support frame; Described electromagnet forms frictional force by magnetic drive flexible hinge on conducting magnet core.
As the described further improvement that realizes the linear electric machine of three grades of controls based on iron gallium alloy: described stator core is made up of permeability magnetic material or magnetic SMC material; Described fine motion coil, long stroke coil II and long stroke coil I are all embedded in stator core by coil brace, and described coil brace processes by nonmetallic materials nylon or bakelite.
As the described further improvement that realizes the linear electric machine of three grades of controls based on iron gallium alloy: be respectively installed with spring on the conducting magnet core at described linear axis two ends; One end of left end conducting magnet core upper spring props up left side brake, and one end props up stator core in addition; One end of right-hand member conducting magnet core upper spring props up right side brake, and one end props up stator core in addition.
A kind of using method that realizes the linear electric machine of three grades of controls based on iron gallium alloy: comprise long Stroke Control and fine motion control, long Stroke Control and fine motion control step are as follows respectively: long Stroke Control step: the first step, long stroke coil II and long stroke coil I pass into respectively after forward current and reverse current, between annular permanent-magnet body I and annular permanent-magnet body II and long stroke coil II and long stroke coil I, interact, form directed force F or to the right left; Second step, by directed force F drive linear axis left or the predetermined interval of operation to the right after, by with the reciprocal brake of linear axis traffic direction braking linear axis, long stroke coil II and long stroke coil I are distinguished power-off; Fine motion control step: the 3rd step, fine motion coil electricity, iron gallium alloy extends Δ L to the one end not being braked on the linear axis in step 2, then by the brake braking linear axis of iron gallium alloy prolonging direction; The 4th step, fine motion coil blackout, the brake that is braked one end on the linear axis in iron gallium alloy step 2 disconnects braking; The 5th step, iron gallium alloy shortens Δ L, drives in step 4, and iron gallium alloy is not braked the linear axis retraction Δ L of a side; The 6th step, circulation the 3rd step, the 4th step and the 5th step, and by the control of fine motion coil electricity amount being completed to the multistage fine motion control of linear electric machine.
The beneficial effects of the utility model: magnetostrictive material iron gallium alloy is placed in linear electric motors, form a part for linear electric motors magnetic circuit, the method driving in conjunction with conventional linear electric motors, the micro-displacement driving method of straight line worm stepping motor driving method and intellectual material, realize centimetre-micron-nanometer Stroke Control.
Brief description of the drawings
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is that the utility model is realized the linear electric machine of three grades of controls and the primary structure schematic diagram of using method thereof based on iron gallium alloy;
Fig. 2 is the structural representation one of Fig. 1 under long Stroke Control state;
Fig. 3 is the structural representation two of Fig. 1 under long Stroke Control state;
Fig. 4 is the structural representation one of Fig. 1 under fine motion state of a control;
Fig. 5 is the structural representation two of Fig. 1 under fine motion state of a control;
Fig. 6 is the structural representation three of Fig. 1 under fine motion state of a control;
Fig. 7 is Fig. 1 another structural representation under long Stroke Control state;
Fig. 8 is that Fig. 1 is at iron gallium alloy magnetic flux structural representation.
Embodiment
Embodiment 1, Fig. 1 have provided a kind of linear electric machine and using method thereof that realizes three grades of controls based on iron gallium alloy to Fig. 8; Wherein, the linear electric machine of realizing three grades of controls based on iron gallium alloy comprises stator core 6, linear axis 1 and brake; The interior linear axis 1 that arranges of stator core 6; Linear axis 1 comprises iron gallium alloy 11, and is separately positioned on the conducting magnet core 9 of iron gallium alloy 11 arranged on left and right sides; The magnetic pole that annular permanent-magnet body I 8 and annular permanent-magnet body II 12(annular permanent-magnet body I 8 and annular permanent-magnet body II 12 are set respectively on the conducting magnet core 9 of arranged on left and right sides is contrary, the lateral surface that is annular permanent-magnet body I 8 is the N utmost point, and the lateral surface of annular permanent-magnet body II 12 is the S utmost point); Annular permanent-magnet body I 8 and annular permanent-magnet body II 12 are to be all spliced to form by the annular permanent-magnet body of four 1/4th.With respect to iron gallium alloy 11, annular permanent-magnet body I 8 and annular permanent-magnet body II 12, in stator core 6, be respectively arranged with fine motion coil 5, long stroke coil II 7 and long stroke coil I 4; Respectively by the interaction between long stroke coil II 7 and annular permanent-magnet body I 8 and long stroke coil I 4 and annular permanent-magnet body II 12, form directed force F or left to the right, more just can promote linear axis 1 by this directed force F and do long stroke motion left or to the right; And by fine motion coil 5, can drive iron gallium alloy generation deformation, the deformation occurring by iron gallium alloy, can realize the fine motion of linear axis 1.
Brake is divided into left side brake 10 and right side brake 2; With respect to the conducting magnet core 9 at linear axis 1 two ends, left side brake 10 and right side brake 2 are set respectively; On the conducting magnet core 9 at linear axis 1 two ends, be respectively installed with spring; One end of left end conducting magnet core 9 upper springs props up left side brake 10, and one end props up stator core 6 in addition; One end of right-hand member conducting magnet core 9 upper springs props up right side brake 2, and one end props up stator core 6 in addition; By spring, can make linear axis 1 reset fast.
Brake comprises flexible hinge and electromagnet, flexible hinge is fixed on exterior support frame, and the electromagnet that electromagnet is sucked type, in needs braking, on electromagnet, pass into electric current, just can on linear axis 1, form frictional force by solenoid actuated flexible hinge, then brake linear axis 1.Above-described stator core 6 is made up of permeability magnetic material or magnetic SMC material, and fine motion coil 5, long stroke coil II 7 and long stroke coil I 4 are all embedded in stator core 6 by coil brace, coil brace processes by nonmetallic materials nylon or bakelite.
When use, step following (electric current passing in long stroke coil II 7 is Ia, and the electric current passing in long stroke coil I 4 is Ib):
1, in long stroke coil II 7, pass into forward current; In long stroke coil I 4, pass into reverse current; Now, long stroke coil II 7 and long stroke coil I 4 produce power directed force F from left to right after interacting with annular permanent-magnet body I 8 and annular permanent-magnet body II 12 respectively, drive linear axis 1 from left to right to move;
2, when linear axis 1 from left to right moves to the node of regulation, left side brake 10 is braked to straight limit axle 1 motion from left to right;
3, long stroke coil II 7 and 4 power-off respectively of long stroke coil I;
4, fine motion coil 5 switch on (fine motion coil 5 flow directions are identical with the flow direction of annular permanent-magnet body I 8 and annular permanent-magnet body II 12), iron gallium alloy 11 extends (deformation occurs iron gallium alloy 11 in magnetic field) to the right, now, in step 2, left side brake 10 only limits the motion of iron gallium alloy 11 Guide magnetic cores 9, but iron gallium alloy 11 occurs can extend to the right after deformation, the conducting magnet core 9 on iron gallium alloy 11 right sides is not braked by right side brake 2;
5, fine motion is arrived after the stroke Δ L of regulation to the right, just brake by right side brake 2, the motion of the conducting magnet core 9 on restriction right side, and the braking of cancellation left side brake 10,5 power-off of fine motion coil, now, because iron gallium alloy 11 shortens Δ L, but because the conducting magnet core 9 on right side is braked by right side brake 2, cannot retract, so the conducting magnet core 9 in left side moves Δ L to the right;
6, by circulation above step 4 and step 5, just can carry out micron-sized driving to linear axis 1, and by accurately controlling the electric current of fine motion coil 5, just can carry out nano level driving to linear axis 1.
If need to carry out Linear Control from right to left, only need to, on the basis of above step, input reverse electric current.
Contrast above-described long stroke high position precision method by the utility model, the utility model patent is applied to intellectual material iron gallium alloy in conventional linear electric motors, make long stroke positioning mechanism and microposition mechanism not separate, really realize integratedly, significantly reduce whole device volume.Because what long stroke adopted is that linear electric motors drive, the utility model has retained the advantage of method one and three fast response times; Because micrometric displacement adopts intellectual material iron gallium alloy, its Micro-displacement Driving mode has advantages of again method two and four again.To sum up, it is that linear electric motors driving, magnetostrictive material iron gallium alloy material stepper drive and microposition are driven and combined together that the utility model patent is put forward structure notable feature, has advantages of little, the large stroke of volume and fast response time.
Finally, it is also to be noted that, what more than enumerate is only a specific embodiment of the present utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model, all should think protection range of the present utility model.

Claims (6)

1. the linear electric machine of realizing three grades of controls based on iron gallium alloy, comprises stator core, linear axis and brake; Linear axis is set in stator core; It is characterized in that: described linear axis comprises magnetostrictive material, the left and right two ends of magnetostrictive material arrange respectively conducting magnet core;
On the conducting magnet core at described left and right two ends, be respectively arranged with annular permanent-magnet body I and annular permanent-magnet body II;
Correspond to iron gallium alloy, annular permanent-magnet body I and annular permanent-magnet body II, in stator core, be respectively arranged with fine motion coil, long stroke coil II and long stroke coil I;
Described brake comprises left side brake and right side brake;
Described left side brake and right side brake correspond respectively on the conducting magnet core in left side and the conducting magnet core on right side.
2. the linear electric machine of realizing three grades of controls based on iron gallium alloy according to claim 1, is characterized in that: the magnetic pole of described annular permanent-magnet body I and annular permanent-magnet body II is contrary.
3. the linear electric machine of realizing three grades of controls based on iron gallium alloy according to claim 2, is characterized in that: described magnetostrictive material are iron gallium alloy.
4. the linear electric machine of realizing three grades of controls based on iron gallium alloy according to claim 3, is characterized in that: described brake comprises the electromagnet of flexible hinge and sucked type;
Flexible hinge is fixed on exterior support frame;
Described electromagnet forms frictional force by magnetic drive flexible hinge on conducting magnet core.
5. the linear electric machine of realizing three grades of controls based on iron gallium alloy according to claim 4, is characterized in that: described stator core is made up of permeability magnetic material or magnetic SMC material;
Described fine motion coil, long stroke coil II and long stroke coil I are all embedded in stator core by coil brace, and described coil brace processes by nonmetallic materials nylon or bakelite.
6. the linear electric machine of realizing three grades of controls based on iron gallium alloy according to claim 5, is characterized in that: on the conducting magnet core at described linear axis two ends, be respectively installed with spring;
One end of left end conducting magnet core upper spring props up left side brake, and one end props up stator core in addition;
One end of right-hand member conducting magnet core upper spring props up right side brake, and one end props up stator core in addition.
CN201420180687.7U 2014-04-14 2014-04-14 Realize the linear electric machine of three grades of controls based on iron gallium alloy Expired - Fee Related CN203933441U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103904936A (en) * 2014-04-14 2014-07-02 浙江理工大学 Linear motor capable of being controlled at three levels on basis of iron and gallium alloy and application method of linear motor
CN104993734A (en) * 2015-06-24 2015-10-21 浙江理工大学 Moving-magnetic type magneto micro-displacement drive

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103904936A (en) * 2014-04-14 2014-07-02 浙江理工大学 Linear motor capable of being controlled at three levels on basis of iron and gallium alloy and application method of linear motor
CN103904936B (en) * 2014-04-14 2016-09-28 浙江理工大学 Linear electric machine and the using method thereof of three class control is realized based on ferrum gallium alloy
CN104993734A (en) * 2015-06-24 2015-10-21 浙江理工大学 Moving-magnetic type magneto micro-displacement drive

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141105

Termination date: 20150414

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