CN103904934A - Micron order converse magnetostriction driver and use method thereof - Google Patents
Micron order converse magnetostriction driver and use method thereof Download PDFInfo
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- CN103904934A CN103904934A CN201410148624.8A CN201410148624A CN103904934A CN 103904934 A CN103904934 A CN 103904934A CN 201410148624 A CN201410148624 A CN 201410148624A CN 103904934 A CN103904934 A CN 103904934A
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Abstract
The invention discloses a micron order converse magnetostriction driver which comprises a driver body and an active cell iron core (6). The micron order converse magnetostriction driver is characterized in that the driver body comprises a magnet (4) and iron-gallium alloy (3); a magnetic circuit I (7) is formed by the magnet (4) and the iron-gallium alloy (3) through a permeability magnetic material; a magnetic circuit II (8) is further formed by the magnet (4) and the active cell iron core (6) through a permeability magnetic material.
Description
Technical field
The present invention relates to one and can realize a micron positioning precision converse magnetostriction driver, particularly utilize permanent magnet to provide driving magnetic field for iron gallium alloy magnetostrictive material, utilize magnetostrictive material to change iron gallium alloy driving magnetic field against hysteresis effect, thereby change iron gallium alloy collapsing length, change mover iron core position by linear stepping motor, linear servo drive mechanism or linear electric motors, can realize micrometric displacement location.
Background technology
Intellectual material, as piezoelectric ceramic and magnetostrictive material, can realize micron order location.Piezoelectric ceramic applies after voltage, by piezoelectricity positive result, realizes micrometric displacement location, realizes larger location stroke by displacement amplifying mechanism or closed assembly mode.Piezoelectric ceramic weak point is that material itself is more crisp, tangentially bears load force limited.Be different from piezoelectric ceramic, magnetostrictive material, by applying magnetic field, utilize magnetic effect to realize micrometric displacement location.Conventional magnetostrictive material have Terfenol_D and iron gallium alloy Galfenol, wherein, iron gallium alloy Galfenol magnetostrictive material are firm, the load force that can bear larger different directions, and also the Galfenol of stress anneal type can normally work in without precompression situation.
Patent (application number 200610150582.7, Granted publication CN101166005) utilizes magnetostrictive material in conjunction with micro displacement magnifying mechanism, by regulating electric current to realize the adjustable driver of micrometric displacement.Patent (application number 200710125011.2, publication number CN101188874) adopts permanent magnet for magnetostrictive material provide excitation field, changes magnetostrictive material internal magnetic field by coil current, realizes micro-displacement and drives.Patent (application number 200410090867.7, publication number CN1619938) utilizes coil drive magnetostrictive material to drive as stroke directions, utilizes piezoelectric ceramic to do hoop position, realizes long distance and high precision location.Patent (application number 200510056369.5, publication number: CN1670977) will apply quiescent biasing magnetic field permanent magnet body and be placed on shell, and coil and magnetostrictive material are placed on inside, realize Micro-displacement Driving.
At present, magnetic telescopic driver utilizes magnetic telescopic driver positive result, adopts permanent magnet that quiescent biasing magnetic field is provided, and the magnetic in regulating winding electric current change magnetostrictive material is close, realizes micrometric displacement adjustment.The weak point of this type of drive is that energy consumption is large, and temperature is high, and magnetostrictive material magnetic permeability is conventionally lower, and this just needs more number of ampere turns to drive, and in coil, electric current can produce thermal losses.Often add in actual use extra heat radiation cooling device to guarantee the steady operation of actuator.And the use of the most just separate units of the magnetic telescopic driver using at present, can not as piezoelectric ceramic, realize large Stroke Control by multi-disc closed assembly mode.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of micron order converse magnetostriction driver simple in structure.
In order to solve the problems of the technologies described above, the invention provides micron order converse magnetostriction driver, comprise driver and mover iron core; Described driver comprises magnet and iron gallium alloy; Described magnet forms magnetic loop I by permeability magnetic material and iron gallium alloy; Described magnet also forms magnetic loop II by permeability magnetic material and mover iron core.
Improvement as above-described micron order converse magnetostriction driver: described permeability magnetic material comprises end iron gallium alloy conducting magnet core, end permanent magnet conducting magnet core and base conducting magnet core; Between described end permanent magnet conducting magnet core and base conducting magnet core, magnet is set; Between described end iron gallium alloy conducting magnet core and base conducting magnet core, iron gallium alloy is set.
Further improvement as above-described micron order converse magnetostriction driver: in described end iron gallium alloy conducting magnet core, iron gallium alloy and base conducting magnet core, mover iron core is set; Described magnet, base conducting magnet core, iron gallium alloy, end iron gallium alloy conducting magnet core and end permanent magnet conducting magnet core form magnetic loop I successively; Described magnet, base conducting magnet core, mover iron core, end iron gallium alloy conducting magnet core and end permanent magnet conducting magnet core form magnetic loop II successively.
Further improvement as above-described micron order converse magnetostriction driver: described end permanent magnet conducting magnet core, magnet and base conducting magnet core arrange mover iron core outward; Described magnet, base conducting magnet core, iron gallium alloy, end iron gallium alloy conducting magnet core and end permanent magnet conducting magnet core form magnetic loop I successively; Described magnet, base conducting magnet core, mover iron core and end permanent magnet conducting magnet core form magnetic loop II successively.
Further improvement as above-described micron order converse magnetostriction driver: described magnet axial magnetizes.
Further improvement as above-described micron order converse magnetostriction driver: cooperatively interact with single mover iron core after the multiple series connection successively of described driver.
Further improvement as above-described micron order converse magnetostriction driver: described magnet is permanent magnet or electromagnet.
The using method of micron order converse magnetostriction driver: comprise the steps: that mover iron core is along axial operation, change the magnetic resistance in magnetic loop II; After in magnetic loop II, magnetic resistance changes, the magnetic flux of magnetic loop I changes, and makes iron gallium alloy generation deformation by the variation of magnetic flux, orders about end iron gallium alloy conducting magnet core along axial stretching.
The present invention is different from current existing Driving technique, the present invention utilizes permanent magnet to provide driving magnetic field for iron gallium alloy magnetostrictive material, utilize magnetostrictive material to change iron gallium alloy driving magnetic field against hysteresis effect, thereby change iron gallium alloy collapsing length, change mover iron core position by linear stepping motor, linear servo drive mechanism or linear electric motors, can realize the control of iron gallium alloy micron order.And can be as heat that the coil in conventional driver produced and affect magnetostrictive material.Therefore, actuator working stability, is applicable to hi-Fix demand.And activation configuration of the present invention can be realized many actuator tandem working modes, do not adopt worm Stepping Drive Mode and displacement amplification device both can realize the large stroke location under micron order.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is that mover iron core 6 of the present invention is at inner structural representation;
Fig. 2 is that mover iron core 6 of the present invention is at outside structural representation;
Fig. 3 is mover iron core permanent magnet magnetic path in the time of a certain position in interior mover core structure;
Fig. 4 is mover iron core permanent magnet magnetic path in the time of a certain position in outer mover core structure;
Fig. 5 is that interior mover core structure driver series connection is used schematic diagram;
Fig. 6 is that outer mover core structure driver series connection is used schematic diagram.
Embodiment
When reality is used, after connecting successively by multiple drivers, be used in conjunction with each other with single mover iron core 6, the end iron gallium alloy conducting magnet core 1 of a driver is connected with the base conducting magnet core 5 of another one driver.
Concrete using method and principle are as follows: drive unit drives mover iron core 6 along moving axially, the magnetic resistance of magnetic loop II 8 changes, and has changed magnetic flux magnetic in iron gallium alloy 3 close, then, the length of iron gallium alloy 3 changes, and causes the length of driver that corresponding change occurs.
The actual step of single mover iron core 6 and driver is as follows:
By external mover iron core 6 drive unit, drive unit can be as mechanisms such as linear stepping motor, servomotor and linear electric motors;
Drive unit drives mover iron core 6 along axially moving right, and the magnetic resistance of magnetic loop II 8 reduces, and part starts by magnetic loop II 8 through the magnetic flux of magnetic loop I 7, causes the magnetic flux density in iron gallium alloy 3 to reduce, and iron gallium alloy 3 shortens;
Drive unit drives mover iron core 6 along being axially moved to the left, and the magnetic resistance of magnetic loop II 8 increases, and part starts by magnetic loop I 7 through the magnetic flux of magnetic loop II 8, causes the magnetic flux density in iron gallium alloy 3 to increase, and iron gallium alloy 3 extends.
Actual step after single mover iron core 6 and the series connection of multiple driver is as follows:
By external mover iron core 6 drive unit, drive unit can be as mechanisms such as linear stepping motor, servomotor and linear electric motors;
Drive unit drives mover iron core 6 along axially moving from left to right (entering first driver), the magnetic resistance of the magnetic loop II 8 of first driver reduces, in first driver, part starts by magnetic loop II 8 through the magnetic flux of magnetic loop I 7, cause the magnetic flux density of iron gallium alloy 3 in first driver to reduce, the iron gallium alloy 3 of first driver shortens gradually;
When mover iron core 6 enters after first driver completely, the iron gallium alloy 3 of first driver stops shortening, and keeps current length;
Drive unit drives mover iron core 6 along axially moving from left to right (entering second driver from first driver), the magnetic resistance of the magnetic loop II 8 of second driver reduces, in second driver, part starts by magnetic loop II 8 through the magnetic flux of magnetic loop I 7, cause the magnetic flux density of iron gallium alloy 3 in second driver to reduce, the iron gallium alloy 3 of second driver shortens gradually;
In the time that mover iron core 6 enters N driver, the length of driver is because iron gallium alloy 3 can shorten corresponding length; In the time that mover iron core 6 exits from N driver, the length of driver is because iron gallium alloy 3 can increase corresponding length while not entering driver (return to mover iron core 6 length); By this method, just can realize elongation or the shortening step by step of driver length.
Embodiment 2, Fig. 2, Fig. 4 and Fig. 5 have provided a kind of micron order magnetostrictive actuator, on end iron gallium alloy conducting magnet core 1 and iron gallium alloy 3, are set with end permanent magnet conducting magnet core 2 and magnet 4; On permanent magnet conducting magnet core 2 and magnet 4, be set with mover iron core 6.Magnet 4 is axial charging, by axial charging, forms magnetic loop I 7 at base conducting magnet core 5, iron gallium alloy 3 and end iron gallium alloy conducting magnet core 1; Base conducting magnet core 5, mover iron core 6 and conducting magnet core 2 form magnetic loop II 8.
When reality is used, after connecting successively by multiple drivers, be used in conjunction with each other with single mover iron core 6.
When reality is used, use step identical with principle and the embodiment 1 of use.
When above-described magnetostrictive material are selected, can use Terfenol(to occur the earliest) or Galfenol (iron gallium alloy), because current magnetostrictive material comprise that Terfenol(occurs the earliest) and Galfenol (iron gallium alloy), under same magnetic flux density, the Terfenol of same length extends long than Galfenol, Terfenol magnetostriction length reaches as high as 2000ppm, and Galfenol collapsing length is up to 400ppm; But the advantage of Galfenol difference Terfenol is, Terfenol is more crisp, and Galfenol is very hard, and Galfenol can weld, and magnetic permeability is large, can reach 100 left and right, and Terfenol can only reach 10.Large this character of magnetic permeability of Galfenol can be used in the iron core of motor, as a part for magnetic circuit; Another remarkable advantage of Galfenol is to have stress anneal type, when Terfenol work, must have precompression, this precompression is to guarantee that Terfenol is operated in optimum state, under this precompression, under same magnetic environment, can reach maximum percentage elongation; The Galfenol of non-pressure annealing (stress annealing) type also needs this precompression, but, another remarkable advantage of Galfenol is, in the time that sintering is prepared Galfenol, this precompression can preset be entered, like this, can, without precompression, can reach optimum Working when in use.The Galfenol of stress anneal type can be operated under pulling force rather than pressure working condition, and Terfenol can only be operated in pressure, if be operated under state of tension, can damage.And to sum up tell, when the iron gallium alloy of selecting when magnetostrictive material is stress anneal type, can additionally not apply preload pressure.Driver is compacter than adopting Tefenol magnetostrictive material, and iron gallium alloy Galfenol magnetic permeability is higher than Terfenol, and needed coil is less.Mover iron core 6 can use the mechanisms such as linear stepping motor, servomotor and linear electric motors to drive.
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 (8)
1. micron order converse magnetostriction driver, comprises driver and mover iron core (6); It is characterized in that: described driver comprises magnet (4) and iron gallium alloy (3);
Described magnet (4) forms magnetic loop I (7) by permeability magnetic material and iron gallium alloy (3);
Described magnet (4) also forms magnetic loop II (8) by permeability magnetic material and mover iron core (6).
2. micron order converse magnetostriction driver according to claim 1, is characterized in that: described permeability magnetic material comprises end iron gallium alloy conducting magnet core (1), end permanent magnet conducting magnet core (2) and base conducting magnet core (5);
Between described end permanent magnet conducting magnet core (2) and base conducting magnet core (5), magnet (4) is set;
Between described end iron gallium alloy conducting magnet core (1) and base conducting magnet core (5), iron gallium alloy (3) is set.
3. micron order converse magnetostriction driver according to claim 2, is characterized in that: in described end iron gallium alloy conducting magnet core (1), iron gallium alloy (3) and base conducting magnet core (5), mover iron core (6) is set;
Described magnet (4), base conducting magnet core (5), iron gallium alloy (3), end iron gallium alloy conducting magnet core (1) and end permanent magnet conducting magnet core (2) form magnetic loop I (7) successively;
Described magnet (4), base conducting magnet core (5), mover iron core (6), end iron gallium alloy conducting magnet core (1) and end permanent magnet conducting magnet core (2) form magnetic loop II (8) successively.
4. micron order converse magnetostriction driver according to claim 2, is characterized in that: the outer mover iron core (6) that arranges of described end permanent magnet conducting magnet core (2), magnet (4) and base conducting magnet core (5);
Described magnet (4), base conducting magnet core (5), iron gallium alloy (3), end iron gallium alloy conducting magnet core (1) and end permanent magnet conducting magnet core (2) form magnetic loop I (7) successively;
Described magnet (4), base conducting magnet core (5), mover iron core (6) and end permanent magnet conducting magnet core (2) form magnetic loop II (8) successively.
5. according to the micron order converse magnetostriction driver described in claim 3 or 4, it is characterized in that: described magnet (4) axial charging.
6. micron order converse magnetostriction driver according to claim 5, is characterized in that: after the multiple series connection successively of described driver, cooperatively interact with single mover iron core (6).
7. micron order converse magnetostriction driver according to claim 6, is characterized in that: described magnet (4) is permanent magnet or electromagnet.
8. the using method of micron order converse magnetostriction driver, is characterized in that: comprise the steps:
Mover iron core (6), along axial operation, changes the magnetic resistance in magnetic loop II (8);
After the interior magnetic resistance of magnetic loop II (8) changes, the magnetic flux of magnetic loop I (7) changes, and makes iron gallium alloy (3) that deformation occur by the variation of magnetic flux, orders about end iron gallium alloy conducting magnet core (1) along axial stretching.
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| CN201410148624.8A CN103904934B (en) | 2014-04-14 | 2014-04-14 | Micron order converse magnetostriction driver and using method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953890A (en) * | 2015-06-24 | 2015-09-30 | 浙江理工大学 | Excitation moving-magnet type magnetostrictive micro-displacement actuator |
| CN104953891A (en) * | 2015-06-24 | 2015-09-30 | 浙江理工大学 | Magnetostriction driver driven by rotating motor |
| CN105162354A (en) * | 2015-08-27 | 2015-12-16 | 上海交通大学 | Giant magnetostrictive material-based rocking head type micromotor |
| CN105322823A (en) * | 2015-11-09 | 2016-02-10 | 林三军 | Temperature interference error compensation method for low power consumption magnetic control system |
| CN105356788A (en) * | 2015-11-09 | 2016-02-24 | 林三军 | Temperature interference compensation system of low power consumption magnetic control device |
| CN105540533A (en) * | 2016-01-22 | 2016-05-04 | 缪雪峰 | Permanent magnet force regulator |
| CN112303247A (en) * | 2020-10-27 | 2021-02-02 | 浙江大学 | Ultra-clean proportional valve |
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| WO1995013649A1 (en) * | 1993-11-11 | 1995-05-18 | Tovarischestvo S Ogranichennoj Otvetstvennostiju Firma 'trio' | Magneto-mechanical converter |
| KR100693752B1 (en) * | 2005-10-13 | 2007-03-12 | 엘지전자 주식회사 | Piezo actuated linear motor, driving method thereof and camera module using the same |
| CN201038194Y (en) * | 2007-04-05 | 2008-03-19 | 杨锦堂 | Magnetostrictive device and linear motor and vibration device adopting same |
| RU2373611C2 (en) * | 2007-05-28 | 2009-11-20 | Институт машиноведения им. А.А. Благонравова Российской Академии Наук | Linear drive |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1995013649A1 (en) * | 1993-11-11 | 1995-05-18 | Tovarischestvo S Ogranichennoj Otvetstvennostiju Firma 'trio' | Magneto-mechanical converter |
| KR100693752B1 (en) * | 2005-10-13 | 2007-03-12 | 엘지전자 주식회사 | Piezo actuated linear motor, driving method thereof and camera module using the same |
| CN201038194Y (en) * | 2007-04-05 | 2008-03-19 | 杨锦堂 | Magnetostrictive device and linear motor and vibration device adopting same |
| RU2373611C2 (en) * | 2007-05-28 | 2009-11-20 | Институт машиноведения им. А.А. Благонравова Российской Академии Наук | Linear drive |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953890A (en) * | 2015-06-24 | 2015-09-30 | 浙江理工大学 | Excitation moving-magnet type magnetostrictive micro-displacement actuator |
| CN104953891A (en) * | 2015-06-24 | 2015-09-30 | 浙江理工大学 | Magnetostriction driver driven by rotating motor |
| CN104953890B (en) * | 2015-06-24 | 2017-03-29 | 浙江理工大学 | A kind of excitation moving-magnetic type mangneto micro-displacement driver |
| CN105162354A (en) * | 2015-08-27 | 2015-12-16 | 上海交通大学 | Giant magnetostrictive material-based rocking head type micromotor |
| CN105162354B (en) * | 2015-08-27 | 2018-01-19 | 上海交通大学 | Swing type micro machine based on giant magnetostrictive material |
| CN105322823A (en) * | 2015-11-09 | 2016-02-10 | 林三军 | Temperature interference error compensation method for low power consumption magnetic control system |
| CN105356788A (en) * | 2015-11-09 | 2016-02-24 | 林三军 | Temperature interference compensation system of low power consumption magnetic control device |
| CN105540533A (en) * | 2016-01-22 | 2016-05-04 | 缪雪峰 | Permanent magnet force regulator |
| CN112303247A (en) * | 2020-10-27 | 2021-02-02 | 浙江大学 | Ultra-clean proportional valve |
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| CN103904934B (en) | 2016-09-28 |
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