CN103904936A - Linear motor capable of being controlled at three levels on basis of iron and gallium alloy and application method of linear motor - Google Patents
Linear motor capable of being controlled at three levels on basis of iron and gallium alloy and application method of linear motor Download PDFInfo
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- CN103904936A CN103904936A CN201410148771.5A CN201410148771A CN103904936A CN 103904936 A CN103904936 A CN 103904936A CN 201410148771 A CN201410148771 A CN 201410148771A CN 103904936 A CN103904936 A CN 103904936A
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Abstract
The invention discloses a linear motor capable of being controlled at three levels on the basis of iron and gallium alloy. The linear motor comprises a stator iron core, a linear shaft and brakes. The linear shaft is arranged in the stator iron core and comprises a magnetostriction material, wherein magnetic conduction iron cores are arranged at the left end and the right end of the magnetostriction material respectively. An annular permanent magnet I and an annular permanent magnet II are arranged on the magnetic conduction iron cores at the left end and the right end of the magnetostriction material respectively. A micro-motion coil corresponding to the iron and gallium alloy, a long-stroke coil II corresponding to the annular permanent magnet I, and a long-stroke coil I corresponding to the annular permanent magnet II are arranged in the stator iron core. The brakes include the left brake and the right brake, wherein the left brake and the right brake are arranged on the left magnetic conduction iron core and the right magnetic conduction iron core respectively.
Description
Technical field
The present invention relates to a kind of long stroke high position precision linear electric machine, especially a kind of linear electric machine and using method thereof that realizes 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.
Summary of the invention
The technical problem to be solved in the present invention 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 invention provides 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, 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.
Beneficial effect of the present invention: 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.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 the present invention is based on iron gallium alloy to realize the linear electric machine of three grades of controls and the primary structure schematic diagram of using method thereof;
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
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 present invention, patent of the present invention 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 present invention 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 patent of the present invention 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 invention.Obviously, the invention is not restricted to above embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (7)
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.
7. a using method that realizes the linear electric machine of three grades of controls based on iron gallium alloy, is characterized in that: 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, and 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148771.5A CN103904936B (en) | 2014-04-14 | 2014-04-14 | Linear electric machine and the using method thereof of three class control is realized based on ferrum gallium alloy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410148771.5A CN103904936B (en) | 2014-04-14 | 2014-04-14 | Linear electric machine and the using method thereof of three class control is realized based on ferrum gallium alloy |
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| CN103904936A true CN103904936A (en) | 2014-07-02 |
| CN103904936B CN103904936B (en) | 2016-09-28 |
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| CN201410148771.5A Expired - Fee Related CN103904936B (en) | 2014-04-14 | 2014-04-14 | Linear electric machine and the using method thereof of three class control is realized based on ferrum gallium alloy |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099063A (en) * | 2015-08-26 | 2015-11-25 | 浙江理工大学 | Driving device capable of rotary and linear two-degree-of-freedom running |
| CN117713398A (en) * | 2024-02-05 | 2024-03-15 | 西南交通大学 | High-precision direct-drive electromechanical actuator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07222465A (en) * | 1994-01-28 | 1995-08-18 | Toshiba Corp | Magnetostrictive actuator |
| CN101821871A (en) * | 2007-10-03 | 2010-09-01 | Feonic公共有限公司 | Magnetostrictive actuator |
| CN102255555A (en) * | 2011-07-11 | 2011-11-23 | 南京航空航天大学 | Permanent magnet dual-coil-driven giant magnetostrictive actuator and working method thereof |
| CN203933441U (en) * | 2014-04-14 | 2014-11-05 | 浙江理工大学 | Realize the linear electric machine of three grades of controls based on iron gallium alloy |
-
2014
- 2014-04-14 CN CN201410148771.5A patent/CN103904936B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07222465A (en) * | 1994-01-28 | 1995-08-18 | Toshiba Corp | Magnetostrictive actuator |
| CN101821871A (en) * | 2007-10-03 | 2010-09-01 | Feonic公共有限公司 | Magnetostrictive actuator |
| CN102255555A (en) * | 2011-07-11 | 2011-11-23 | 南京航空航天大学 | Permanent magnet dual-coil-driven giant magnetostrictive actuator and working method thereof |
| CN203933441U (en) * | 2014-04-14 | 2014-11-05 | 浙江理工大学 | Realize the linear electric machine of three grades of controls based on iron gallium alloy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099063A (en) * | 2015-08-26 | 2015-11-25 | 浙江理工大学 | Driving device capable of rotary and linear two-degree-of-freedom running |
| CN117713398A (en) * | 2024-02-05 | 2024-03-15 | 西南交通大学 | High-precision direct-drive electromechanical actuator |
| CN117713398B (en) * | 2024-02-05 | 2024-05-07 | 西南交通大学 | High-precision direct-drive electromechanical actuator |
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