CN1307780C - Phase change temp controlling super magneto strictive extension microshifting actuator - Google Patents
Phase change temp controlling super magneto strictive extension microshifting actuator Download PDFInfo
- Publication number
- CN1307780C CN1307780C CNB2004100171088A CN200410017108A CN1307780C CN 1307780 C CN1307780 C CN 1307780C CN B2004100171088 A CNB2004100171088 A CN B2004100171088A CN 200410017108 A CN200410017108 A CN 200410017108A CN 1307780 C CN1307780 C CN 1307780C
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- China
- Prior art keywords
- temperature control
- magnetostrictive rod
- coil
- actuator
- push rod
- Prior art date
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- Expired - Fee Related
Links
- 230000008859 change Effects 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 239000012782 phase change material Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 15
- 230000004044 response Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- -1 coil rack Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical class [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The present invention discloses a phase change temperature control type super magnetostrictive micro-displacement actuator. A magnetostrictive rod is arranged on a small convex platform in the center of a bottom seat, and a phase change temperature control device is arranged outside the magnetostrictive rod. A coil framework outside the phase change temperature control device is in turn provided with a drive coil and a bias coil from inside to outside, wherein an outer shell is arranged outside the bias coil; an output push rod, a prepressing spring, an upper end cover and a prepressing nut form a combined prepressing mechanism. The magnetostrictive rod is driven by a magnetic field generated by input current, and the output displacement and the output force of the actuator can be controlled by controlling the input current. The size of prepressing and the strength of a biased magnetic field strength can be adjusted to cause the magnetostrictive rod to be positioned in a favorable operating condition. The phase change temperature control device additionally arranged between the super magnetostrictive rod and the drive coil can ensure the output displacement precision of the actuator. The present invention has the advantages of small volume, light weight, high frequency response, large output force and high precision of displacement, and prevents heat generated by the coils from affecting the output displacement of the actuator. The present invention can be used in the fields of superprecision processing, vibration control, etc.
Description
Technical field
The present invention relates to a kind of phase change temperature control type ultra-magnetostriction microdisplacement actuator.
Background technology
Micro-displacement actuator has obtained in fields such as ultraprecise processing, robot, fluid machinery, vibration control, sonar systems to use widely, uses more type at present and mainly contains mechanical type, fluid pressure type and piezoelectric type etc.Mechanical type and hydraulic actuator frequency response are lower, and power output is less, and the output displacement is difficult to satisfy high-precision requirement; Though piezo-activator displacement resolution and frequency response are all than higher, it is less to exert oneself, and easily produces electrical breakdown, and can produce drift phenomenon.Phase change temperature control type ultra-magnetostriction microdisplacement actuator has advantages such as big displacement, brute force, high accuracy, fast-response, high reliability, broadband, little drift value, low-voltage driving, but the heating of magnetostrictive rod is not added control to prior art or temperature control system is too complicated, realizes difficulty.
Summary of the invention
The object of the invention provides a kind of phase change temperature control type ultra-magnetostriction microdisplacement actuator, controls the actuating device of output displacement by electric current, and solves the magnetostrictive rod heating problem, improves the displacement control precision.
In order to achieve the above object, the technical solution adopted in the present invention is: comprise base, temperature control sleeve, magnetostrictive rod, phase-change material, coil rack, shell, drive coil, bias coil, output push rod, pre-compressed spring, upper end cover, precompressed nut; On the center small boss of base magnetostrictive rod is housed, magnetostrictive rod is equipped with the phase-change temperature control device of being made up of sleeve and phase-change material outward, the outer coil rack of phase-change temperature control device from inside to outside is equipped with drive coil successively, bias coil, bias coil is equipped with shell outward, the output push rod is equipped with in the magnetostrictive rod upper end, the boss of output push rod both sides and the inner convex platform of shell are for being slidingly matched, pre-compressed spring is enclosed within on the outer boss of output push rod, the two ends of pre-compressed spring are respectively by boss and the precompressed nut support of exporting push rod, the upper end cover threaded engagement of precompressed nut and shell, the output push rod, pre-compressed spring, upper end cover and precompressed nut constitute combination precompressed mechanism, and the coil rack two ends are respectively by shell convex table top and base support.
Output push rod, shell and base are that permeability magnetic material and magnetostrictive rod form closed magnetic circuit; Upper end cover and precompressed nut are non-magnet material.
The present invention compares the advantage that is had with background technology:
1) volume is little, and is in light weight, and power output is big;
2) precompression and biasing field intensity are adjustable, possess the dynamic bias condition, help obtaining best output characteristic;
3) driving power is simple, and drive current is 0～2A, is easy to design, stable performance, and antijamming capability is strong;
4) working stability, dynamic response characteristic is good, and output is linear preferable, and repeatable fine, frequency response reaches 2000Hz;
5) the phase change temperature control realization is very simple, and effect is fine, has guaranteed that the temperature of magnetostrictive rod keeps constant, thereby has suppressed its thermic elongation well, makes the output displacement accuracy of actuator reach submicron order even higher; And can adapt to various bad working environment.
6) little, in light weight, the not electricity consumption of phase-change temperature control device volume, do not have moving component, can be used under the harsh conditions such as vibration and impacts, and reliability is very high, can periodic duty, use for a long time repeatedly.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Accompanying drawing is a structural principle schematic diagram of the present invention.
Among the figure: 1. base, 2. temperature control sleeve, 3. magnetostrictive rod, 4. phase-change material, 5. coil rack, 6. shell, 7. drive coil, 8. bias coil, 9. output push rod, 10. pre-compressed spring, 11. upper end covers, 12. precompressed nuts.
Embodiment
As shown in drawings, the present invention includes base 1, temperature control sleeve 2, magnetostrictive rod 3, phase-change material 4, coil rack 5, shell 6, drive coil 7, bias coil 8, output push rod 9, pre-compressed spring 10, upper end cover 11, precompressed nut 12.On the center small boss of base 1 magnetostrictive rod 3 is housed, the magnetostrictive rod 3 outer phase-change temperature control devices of forming by sleeve 2 and phase-change material 4 that are equipped with, the outer coil rack 5 of phase-change temperature control device from inside to outside is equipped with drive coil 7, bias coil 8 successively.The joint of temperature control sleeve 2 and coil rack 5 seals, and the closed chamber of phase-change material is held in inner formation one.The bias coil 8 outer shells 6 that are equipped with, output push rod 9 is equipped with in magnetostrictive rod 3 upper ends, and the boss of output push rod 9 both sides and the inner convex platform of shell 6 are for being slidingly matched.Pre-compressed spring 10 is enclosed within on the boss of exporting outside the push rod 9, and upper end cover 11 threaded engagement of precompressed nut 12 and shell 6 are supported by the boss and the precompressed nut 12 of output push rod 9 respectively in the two ends of pre-compressed spring 10.Output push rod 9, pre-compressed spring 10, upper end cover 11 and precompressed nut 12 constitute combination precompressed mechanism, and coil rack 5 two ends are supported by shell 6 convex table tops and base 1 respectively.
Output push rod 9, shell 6 are that permeability magnetic material and magnetostrictive rod 3 form closed magnetic circuit with base 1; Upper end cover 11 and precompressed nut 12 are non-magnet material.
The field drives that magnetostrictive rod 3 is produced by input current, magnetostrictive rod 3 lower ends are supported by the boss of base 1, and the upper end is by the outwards micron-sized displacement of output of transmission of output push rod 9.Change input current and promptly changed driving magnetic field, the dilatation amount of magnetostrictive rod 3 is along with respective change, therefore by controlling the output displacement and the power output of input current controlled actuator.
Adopting pre-compressed spring 10, precompressed nut 12, output push rod 9 and upper end cover 11 combined mechanisms to apply preloads, bias coil 8 produces required bias magnetic field and eliminates the frequency multiplication characteristic of magnetostrictive rod, adjusts precompression and the big I of biased magnetic field strength magnetostrictive rod is under the preferable condition of work.
The thermic that tens degree will produce the dozens of micron if the temperature of giant magnetostrictive rod 3 raises extends, and is about the same with controlled magnetic elongation amount, and working temperature has very big influence to the magnetostriction coefficient of giant magnetostrictive material.Between giant magnetostrictive rod 3 and drive coil 7, increase phase-change temperature control device, can suppress the temperature rise and the thermic elongation of magnetostrictive rod, guarantee the output displacement accuracy of actuator.In the actuator course of work, coil is passed to phase-change temperature control device by certain density of heat flow rate with heat, when the phase-change material 4 (inorganic hydrated salt of phase transition temperature about 40 ℃, as two water sodium fluorides, ammonioferric alum etc.) temperature begins fusing when being elevated to its fusing point, the heat that absorption and storage and the latent heat of fusion are suitable, simultaneously to remain on fusing point constant for the interface temperature, thereby the temperature of magnetostrictive rod 3 is controlled.When actuator quit work, the liquid phase-change material began to discharge latent heat and solidifies voluntarily, and magnetostrictive rod 3 temperature still remain unchanged; After phase-change material all solidified, magnetostrictive rod 3 temperature just were returned to ambient temperature gradually.
Claims (2)
1, a kind of phase change temperature control type ultra-magnetostriction microdisplacement actuator is characterized in that: comprise base (1), temperature control sleeve (2), magnetostrictive rod (3), phase-change material (4), coil rack (5), shell (6), drive coil (7), bias coil (8), output push rod (9), pre-compressed spring (10), upper end cover (11), precompressed nut (12); Magnetostrictive rod (3) is housed on the center small boss of base (1), the outer phase-change temperature control device of forming by sleeve (2) and phase-change material (4) that is equipped with of magnetostrictive rod (3), the outer coil rack (5) of phase-change temperature control device from inside to outside is equipped with drive coil (7) successively, bias coil (8), the outer shell (6) that is equipped with of bias coil (8), output push rod (9) is equipped with in magnetostrictive rod (3) upper end, the boss of output push rod (9) both sides and the inner convex platform of shell (6) are for being slidingly matched, pre-compressed spring (10) is enclosed within on the outer boss of output push rod (9), the two ends of pre-compressed spring (10) are supported by the boss and the precompressed nut (12) of output push rod (9) respectively, upper end cover (11) threaded engagement of precompressed nut (12) and shell (6), output push rod (9), pre-compressed spring (10), upper end cover (11) and precompressed nut (12) constitute combination precompressed mechanism, and coil rack (5) two ends are supported by shell (6) convex table top and base (1) respectively.
2, a kind of phase change temperature control type ultra-magnetostriction microdisplacement actuator according to claim 1 is characterized in that: output push rod (9), shell (6) are permeability magnetic material with base (1), and magnetostrictive rod (3) forms closed magnetic circuit; Upper end cover (11) and precompressed nut (12) are non-magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100171088A CN1307780C (en) | 2004-03-19 | 2004-03-19 | Phase change temp controlling super magneto strictive extension microshifting actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100171088A CN1307780C (en) | 2004-03-19 | 2004-03-19 | Phase change temp controlling super magneto strictive extension microshifting actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1564452A CN1564452A (en) | 2005-01-12 |
| CN1307780C true CN1307780C (en) | 2007-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100171088A Expired - Fee Related CN1307780C (en) | 2004-03-19 | 2004-03-19 | Phase change temp controlling super magneto strictive extension microshifting actuator |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101626202B (en) * | 2008-07-11 | 2012-01-25 | 杨锦堂 | Magnetostrictor actuator |
| CN105915107B (en) * | 2016-06-24 | 2018-06-29 | 沈阳工业大学 | Ultra-magnetic deformation actuator with automatic thermal compensation function |
| CN107144801A (en) * | 2017-06-27 | 2017-09-08 | 西安电子科技大学 | Room temperature smart active member |
| CN107395045A (en) * | 2017-09-11 | 2017-11-24 | 安徽理工大学 | The two-way creeping motion type miniature linear and control method of ultra-magnetic telescopic driving |
| CN111390632A (en) * | 2020-04-02 | 2020-07-10 | 上海应用技术大学 | Feedback regulation flutter suppression device based on giant magnetostrictive material |
| CN112901592B (en) * | 2021-03-03 | 2024-04-19 | 南京伶机宜动驱动技术有限公司 | Hydraulic driver based on magneto-electric displacement detection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2587531Y (en) * | 2002-12-05 | 2003-11-26 | 董玉环 | Vibration generator made of ultramagnetostriction material |
| CN2605934Y (en) * | 2003-01-27 | 2004-03-10 | 浙江大学 | Active vibration absorbor with super magnetostrictive actuator |
| CN2694608Y (en) * | 2004-03-19 | 2005-04-20 | 浙江大学 | Super magnetostrictive micro displacement actuator |
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- 2004-03-19 CN CNB2004100171088A patent/CN1307780C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2587531Y (en) * | 2002-12-05 | 2003-11-26 | 董玉环 | Vibration generator made of ultramagnetostriction material |
| CN2605934Y (en) * | 2003-01-27 | 2004-03-10 | 浙江大学 | Active vibration absorbor with super magnetostrictive actuator |
| CN2694608Y (en) * | 2004-03-19 | 2005-04-20 | 浙江大学 | Super magnetostrictive micro displacement actuator |
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| Publication number | Publication date |
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| CN1564452A (en) | 2005-01-12 |
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Granted publication date: 20070328 Termination date: 20100319 |