CN101150290B - A wide temperature domain huge magnet driven flexible magnetism controlled driver - Google Patents
A wide temperature domain huge magnet driven flexible magnetism controlled driver Download PDFInfo
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- CN101150290B CN101150290B CN200710176816XA CN200710176816A CN101150290B CN 101150290 B CN101150290 B CN 101150290B CN 200710176816X A CN200710176816X A CN 200710176816XA CN 200710176816 A CN200710176816 A CN 200710176816A CN 101150290 B CN101150290 B CN 101150290B
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- dish spring
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- magnetostrictive rod
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Abstract
This invention discloses a huge magnetostrictive drive working under wide temperature sphere including an excitation set, a constant magnetic set, an output piece and a screw, in which, the excitation set is sleeved in a round hole of the constant magnetic set and is composed of a coil, a magentostrictive rod and a magnetic conduction ring, the coil winds the magnetostrictive rod, the magnetic conduction ring is set under the rod and contacted to one end of the rod, the other end of the rod is contacted with the end surface of the neck of an output piece, the screw section of the screw passes through the conduction ring, the rod, the output piece, a force sensor and a disk spring to be compacted by a nut, which can work under -80-100deg.C.
Description
Technical field
The present invention relates to a kind of driver, more particularly say, be meant that a kind of wide temperature territory scope that can be applicable to the big temperature difference is-80 ℃～100 ℃ a huge magnet driven flexible magnetism controlled driver.
Background technology
Rare-Earth Giant Magnetostrictive Materials Terfenol-D has that magneto-strain is big, power output is big, electromechanical coupling factor is high and respond characteristics rapidly, has become the preferred material of novel intelligent driving element.Yet under some special Service Environment, in the empty day environment of the big temperature difference (80 ℃～100 ℃), Rare-Earth Giant Magnetostrictive Materials Terfenol-D its magnetostriction performance when high temperature and low temperature can significantly reduce, thereby causes the output strain instability of driving element.
Giant magnetostriction material has huge application potential as the new and effective electricity of a class (magnetic) energy-machinery (sound) energy transition material in intelligence structure fields such as Aero-Space, electron electric power, information communications.The large scale magnetostrictive device that does not have volume and weight to limit designs simple relatively, both can adopt solenoid, also can adopt multi-form permanent magnet that bias magnetic field is provided.As long as size is enough big, just can the guaranteed performance requirement.Application at present is that the mode of employing dc coil (or the dc bias current that superposes on exciting current) and cylinder permanent magnet is that driver applies bias magnetic field more widely.
In the development of current aircraft industry, to the weight of aviation components and parts, the more and more strictness of requirement of volume.Particularly aviation military field in order to guarantee motor-driven, the flexibility of complete machine, reduces airborne amount and power consumption, requires the components and parts volume little, in light weight as far as possible.And the bottleneck problem that giant magnetostriction material is used at aerospace field is still to show heavy in some aspects, needs microminaturization.Simultaneously, because heating problem is bigger to the micro devices influence, should not adopt solenoid that the mode of bias magnetic field is provided.
Adopted the cylinder permanent magnet that the arrangement of bias magnetic field is provided among the publication number CN2621239Y, this arrangement is applicable to large-sized giant magnetostrictive material vibration actuator.The magnetic circuit that the giant magnetostrictive rod of this actuator and excitation coil, permanent magnet form is the open circuit form.
Summary of the invention
The purpose of this invention is to provide a kind of wide temperature domain huge magnet driven flexible magnetism controlled driver, be with the excitation group in the permanent magnetic group in this magnetic control actuator, described permanent magnetic group adopts the section gap layout, and uniform bias magnetic field is provided, and has reduced magnetic resistance simultaneously; Magnetostrictive rod 7 adopts hollow structure, provides precompression by screw rod, the dish spring group of passing, and can make the overall structure of driver more compact; By on screw rod, slotting,, teslameter and thermometer provide convenience for being installed; The end face of output has reduced the unsteadiness that single pole connects as the mounting platform that is driven part; In establish the power output that produces when the power transducer can be monitored prestressing force and drive operation; Upper end cover 14, bottom end cover 11, permanent magnetic group 20, excitation group (coil 6, magnetostrictive rod 7, magnetic inductive block 9), output 8 form closed magnetic circuit, can effectively improve the magnetic machine conversion efficiency of driver; Permanent magnetic group 20 adopts permanent magnetism and magnetic conduction layout separately, has both reduced the magnetic resistance of magnetic circuit, has improved the utilance of permanent magnet again.
A kind of wide temperature domain huge magnet driven flexible magnetism controlled driver of the present invention, the top of shell body is a upper end cover, the center of upper end cover is provided with output, be provided with the power transducer in the centre bore of output, one end in contact of the end face of power transducer and dish spring group, the other end of dish spring group contacts with nut, and nut is connected on the screw flight section; The below of shell body is a bottom end cover, is extended with lead wire set in the centre bore of bottom end cover;
The permanent magnetic group of annular is installed in the shell body, be with the excitation group in the circular hole of permanent magnetic group, the excitation group is made of coil, magnetostrictive rod, magnetic guiding loop, coil is wrapped in the outside of magnetostrictive rod, magnetic guiding loop is located at the below of magnetostrictive rod, and with an end in contact of magnetostrictive rod, the other end of magnetostrictive rod contacts with the end face of the neck of output;
Screw flight Duan Duan is compressed by nut after passing magnetic guiding loop, magnetostrictive rod, output, power transducer, dish spring group in turn.
Description of drawings
Fig. 1 is the external structure of wide temperature domain huge magnet driven flexible magnetism controlled driver of the present invention.
Fig. 2 is the structure chart of no shell body among Fig. 1.
Fig. 2 A is the structure chart of permanent magnetic group.
Fig. 3 is the installation diagram of solenoid, output, screw rod.
Fig. 3 A is the blast diagrammatic sketch of Fig. 3.
Fig. 3 B is the blast diagrammatic sketch of output.
Among the figure: permanent magnetism annulus on the 1.A magnetic conductor 2.B magnetic conductor 3.C magnetic conductor 4.
5. descend permanent magnetism annulus 6. coils 7. magnetostrictive rods 8. outputs 81. centre bores
82. screwed hole 83. end faces 84. necks 9. magnetic guiding loops 10. screw rods
101. thread segment 102. smooth section 103. grooves 11. bottom end covers 12. shell bodies
13. lead wire set 14. upper end covers 15. nut 16.A dish spring 17.B dish springs
18.C dish spring 19. power transducers 20. permanent magnetic group 21. circular holes
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
A kind of wide temperature domain huge magnet driven flexible magnetism controlled driver of the present invention, shown in Fig. 1, Fig. 3 B, the top of shell body 12 is upper end covers 14, the center of upper end cover 14 is provided with output 8, be provided with power transducer 19 in the centre bore 81 of output 8, one end in contact of the end face of power transducer 19 and dish spring group, the other end of dish spring group contacts with nut 15, and nut 15 is connected on the thread segment 101 of screw rod 10; The below of shell body 12 is bottom end covers 11, is extended with lead wire set 13 (lead wire set 13 is meant the lead-in wire of teslameter and the lead-in wire of thermometer) in the centre bore of bottom end cover 11; Referring to shown in Figure 2, the permanent magnetic group 20 (permanent magnetic group 20 is used to produce bias magnetic field) of annular is installed in the shell body 12; Shown in Fig. 2 A, Fig. 3, Fig. 3 A, be with the excitation group in the circular hole 21 of permanent magnetic group 20, the excitation group is made of coil 6 (coil 6 is used to produce excitation field), magnetostrictive rod 7, magnetic guiding loop 9, coil 6 is wrapped in the outside of magnetostrictive rod 7, magnetic guiding loop 9 is located at the below of magnetostrictive rod 7, and with an end in contact of magnetostrictive rod 7, the other end of magnetostrictive rod 7 contacts with the end face of the neck 84 of output 8; Thread segment 101 ends of screw rod 10 are compressed by nut 15 after passing magnetic guiding loop 9, magnetostrictive rod 7, output 8, power transducer 19, dish spring group in turn.
Shown in Fig. 3 B, in the present invention, output 8 is tubaeform, output 8 bell-mouthed end faces 83 are provided with a plurality of screwed holes 82 (being used for being fixed by screw and cooperating of screwed hole 82 being driven part), strong transducer 19 is set (in the present invention in the centre bore 81 of output 8, what choose is the LC0502 type power transducer that U.S. Lanace measuring technology Co., Ltd produces), the end face of power transducer 19 is placed with dish spring group, described dish spring group can be by a plurality of dish springs with involutory, superimposed mode is combined, as dish spring group involutory by A dish spring 16 and B dish spring 17, and the superimposed formation of B dish spring 17 and C dish spring 18.
Shown in Fig. 2, Fig. 2 A, in the present invention, the superimposed in turn formation one permanent magnetic group 20 of C magnetic conductor 3, time permanent magnetism annulus 5, B magnetic conductor 2, last permanent magnetism annulus 4 and A magnetic conductor 1.The overall structure of permanent magnetic group 20 is annulars, and promptly C magnetic conductor 3, time permanent magnetism annulus 5, B magnetic conductor 2, last permanent magnetism annulus 4 have identical interior external diameter with A magnetic conductor 1.Permanent magnetic group 20 provides one along screw rod 10 axial equally distributed bias magnetic fields for magnetostrictive rod 7, the magnetic field intensity of bias magnetic field is 300～600Oe, can record by the teslameter in the groove 103 that is installed in screw rod 10 (in the present invention, choosing the SG-41/42 type teslameter that Beijing Zhuo Sheng magnetoelectricity technology Co., Ltd produces).
In the present invention, magnetostrictive rod 7 is a hollow circuit cylinder.
In the present invention, coil 6 is the anti-enamelled wire of high temperature more than 180 ℃.In operate as normal, the heat that coil 6 produces can record by thermometer, and promptly thermometric is the operating ambient temperature of magnetostrictive rod 7 in the driver of the present invention.Thermometer adopts the JM624U type thermometer that Tianjin Jin Ming Instr Ltd. produces among the present invention.
In operate as normal, the power output that magnetostrictive rod 7 produces under the excitation field effect can record by power transducer 19.What magnetostrictive rod 7 adopted is the TbDyFeCo oriented crystal, and this TbDyFeCo material can provide magnetostrictive rod 7 all to have good magnetostriction performance in-80 ℃～100 ℃ serviceability temperature scopes.
In the present invention, last permanent magnetism annulus 4 and following permanent magnetism annulus 5 are samarium-cobalt permanent-magnetic material.A magnetic conductor 1, B magnetic conductor 2, C magnetic conductor 3 adopt soft magnetic material, as high magnetic permeability soft magnetic materials such as pure iron, silicon steel or permalloys.
In the present invention, upper end cover 14, bottom end cover 11, permanent magnetic group 20, excitation group (coil 6, magnetostrictive rod 7, magnetic inductive block 9), output 8 form closed magnetic circuit, can effectively improve the magnetic machine conversion efficiency of driver.Upper end cover 14, bottom end cover 11, output 8, magnetic inductive block 9 are magnetic conductor, adopt soft magnetic material, as high magnetic permeability soft magnetic materials such as pure iron, silicon steel or permalloys.Output 8 is designed to flared structure, matches with magnetostrictive rod 7, has both sealed magnetic circuit effectively, helps the quick-expansion of magnetostrictive rod 7 simultaneously.
In the present invention, screw rod 10, shell body 12 adopt stainless steel, duralumin or titanium alloy etc materials to make.
Claims (9)
1. wide temperature domain huge magnet driven flexible magnetism controlled driver, it is characterized in that: the top of shell body (12) is upper end cover (14), the center of upper end cover (14) is provided with output (8), be provided with power transducer (19) in the centre bore (81) of output (8), one end in contact of the end face of power transducer (19) and dish spring group, the other end of dish spring group contacts with nut (15), and nut (15) is connected on the thread segment (101) of screw rod (10);
The below of shell body (12) is bottom end cover (11), is extended with lead wire set (13) in the centre bore of bottom end cover (11);
The permanent magnetic group (20) of annular is installed in the shell body (12), be with the excitation group in the circular hole (21) of permanent magnetic group (20), the excitation group is made of coil (6), magnetostrictive rod (7), magnetic guiding loop (9), coil (6) is wrapped in the outside of magnetostrictive rod (7), magnetic guiding loop (9) is located at the below of magnetostrictive rod (7), and with an end in contact of magnetostrictive rod (7), the other end of magnetostrictive rod (7) contacts with the end face of the neck (84) of output (8);
After passing magnetic guiding loop (9), magnetostrictive rod (7), output (8), power transducer (19), dish spring group in turn, thread segment (101) end of screw rod (10) compresses by nut (15).
2. magnetic control driver according to claim 1 is characterized in that: described permanent magnetic group (20) is by the superimposed in turn formation of C magnetic conductor (3), time permanent magnetism annulus (5), B magnetic conductor (2), last permanent magnetism annulus (4) and A magnetic conductor (1).
3. magnetic control driver according to claim 1 is characterized in that: described dish spring group is combined in involutory, superimposed mode by a plurality of dish springs.
4. magnetic control driver according to claim 1 is characterized in that: described lead wire set (13) is meant the lead-in wire of magnetometer and the lead-in wire of thermometer.
5. magnetic control driver according to claim 1 is characterized in that: described output (8) is for tubaeform, and the bell-mouthed end face of output (8) (83) is provided with a plurality of screwed holes (82).
6. magnetic control driver according to claim 1 is characterized in that: described dish spring group is involutory by A dish spring (16) and B dish spring (17), and the superimposed formation of B dish spring (17) and C dish spring (18).
7. magnetic control driver according to claim 1 is characterized in that: what the material of described magnetostrictive rod (7) adopted is the TbDyFeCo oriented crystal.
8. magnetic control driver according to claim 2 is characterized in that: described upward permanent magnetism annulus (4) and following permanent magnetism annulus (5) are samarium-cobalt permanent-magnetic material.
9. magnetic control driver according to claim 1 is characterized in that: described wide temperature territory temperature range is-80 ℃～100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710176816XA CN101150290B (en) | 2007-11-05 | 2007-11-05 | A wide temperature domain huge magnet driven flexible magnetism controlled driver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710176816XA CN101150290B (en) | 2007-11-05 | 2007-11-05 | A wide temperature domain huge magnet driven flexible magnetism controlled driver |
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| Publication Number | Publication Date |
|---|---|
| CN101150290A CN101150290A (en) | 2008-03-26 |
| CN101150290B true CN101150290B (en) | 2010-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710176816XA Expired - Fee Related CN101150290B (en) | 2007-11-05 | 2007-11-05 | A wide temperature domain huge magnet driven flexible magnetism controlled driver |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218845B (en) * | 2014-08-14 | 2016-05-04 | 北京航空航天大学 | A kind of commutation motion based on magnetostriction materials |
| CN107567230B (en) * | 2017-10-26 | 2019-12-03 | 合肥超越电器有限责任公司 | A kind of temperature controller shell with lateral easily assembling mechanism for monitoring |
| CN111273204B (en) * | 2020-02-25 | 2022-10-25 | 杭州电子科技大学 | Resonant cavity magnetic field sensing system for enhancing DC field sensing precision by wide temperature range AC field |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779718Y (en) * | 2005-01-27 | 2006-05-10 | 上海交通大学 | Bias magnetic field continuously adjustable over-magnetostrictive actuator |
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- 2007-11-05 CN CN200710176816XA patent/CN101150290B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779718Y (en) * | 2005-01-27 | 2006-05-10 | 上海交通大学 | Bias magnetic field continuously adjustable over-magnetostrictive actuator |
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Granted publication date: 20100811 Termination date: 20111105 |