CN103391028A - Magnetism-piezoelectricity actuator based on triangular geometric displacement amplifying mechanism - Google Patents
Magnetism-piezoelectricity actuator based on triangular geometric displacement amplifying mechanism Download PDFInfo
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- CN103391028A CN103391028A CN2013102693804A CN201310269380A CN103391028A CN 103391028 A CN103391028 A CN 103391028A CN 2013102693804 A CN2013102693804 A CN 2013102693804A CN 201310269380 A CN201310269380 A CN 201310269380A CN 103391028 A CN103391028 A CN 103391028A
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Abstract
Provided is a magnetism-piezoelectricity actuator based on a triangular geometric displacement amplifying mechanism. The section of the actuator is a triangular mechanism. A flexible mechanism with reduced wall thickness is arranged at the waist portion of the triangular mechanism, a piezoelectric actuation mechanism is embedded in the triangular mechanism and on the upper portion of the flexible mechanism, and a magnetic actuation mechanism is connected with the base of the triangular mechanism and comprises a hollow cylindrical coil. If the piezoelectric actuation mechanism is electrified, the upper portion of the triangular mechanism is deformed, the end portion of the triangular mechanism outputs micro displacement and force. If the hollow cylindrical coil is electrified, the lower portion of the triangular mechanism is deformed, the end portion of the triangular mechanism outputs large displacement and force. If the hollow cylindrical coil is electrified continuously, the deformation of the lower portion of the triangular mechanism is kept, and the large displacement output by the end portion of the triangular mechanism is kept. When the hollow cylindrical coil is electrified continuously and the piezoelectric actuation mechanism is electrified simultaneously, the upper portion of the triangular mechanism is also deformed, and the large displacement output by the end portion of the triangular mechanism achieves fine tuning.
Description
Technical field
The present invention relates to a kind of actuator, be specifically related to a kind of magnetic-piezoelectric actuator based on triangle geometric displacement enlarger.
Background technology
Actuator is widely used in scientific research and industrial circle as a kind of power set with output displacement and power, and its potential economic benefits are very remarkable, and the design of actuator and development are paid much attention to.But there are the following problems for existing piezoelectric actuator: one, and piezoelectric actuator realizes that the displacement start generally forms an actuating system together by piezoelectric pile, mechanical structure, spring and output mechanism, jointly finishes the work, output displacement is generally less; Two, generally adopt the piezoelectricity locking for realizing large displacement, yet locking also need the piezoelectricity continued power, and supply power voltage is generally higher, very uneconomical practicality; Three, in experiment and the course of work, for realizing large displacement, generally adopt repeatedly start, inefficiency.Also there are the following problems for existing magnetic actuator: one, the magnetic actuator realizes that the displacement start generally forms an actuating system together by permanent magnet, electromagnet, mechanical structure, spring and output mechanism, jointly finish the work, output displacement is generally larger, and precision is low; Two, in experiment and the course of work, for realizing the general employing of high accuracy, repeatedly reduce the electromagnet coil wire diameter, increase coil turn, inefficiency.
Summary of the invention
For solving above-mentioned problems of the prior art, the object of the present invention is to provide a kind of magnetic-piezoelectric actuator based on triangle geometric displacement enlarger, in actuator, electromagnetic force realizes the larger displacement output of actuator, the micrometric displacement output that piezoelectricity is realized actuator, compact conformation, easy for installation, simple to operate, the scope of application is very wide.
For achieving the above object, the technical solution adopted in the present invention is:
magnetic-piezoelectric actuator based on triangle geometric displacement enlarger, described actuator is that cross section is the actuator of cam mechanism 1, the waist of described cam mechanism 1 is provided with the compliant mechanism 1-1 that wall thickness dwindles, in described cam mechanism 1 inside, compliant mechanism 1-1 top is embedded with piezoelectric actuating mechanism 2, in described compliant mechanism 1-1 bottom, cam mechanism 1 bottom is connected with magnetic actuation mechanism 3, described magnetic actuation mechanism 3 comprises shell 3-1, be placed in the outer space concave cylindrical magnetic conductor 3-2 in shell 3-1, described outer space concave cylindrical magnetic conductor 3-2 is connected by magnetic force with an end of putting cylinder permanent magnet 3-3 in the inner, the cylinder permanent magnet 3-3 other end is connected by magnetic force with the interior cylinder magnetic conductor 3-4 in being placed in outer space concave cylindrical magnetic conductor 3-2, in gap between outer space concave cylindrical magnetic conductor 3-2 and interior cylinder magnetic conductor 3-4, cover has air-cored cylindrical coil 3-5, the first end cap 3-6 and outer space concave cylindrical magnetic conductor 3-2 that the head rod 4 that is connected with cam mechanism 1 bottom one end passes magnetic actuation mechanism 3 are threaded connection, and the second end cap 3-7 and air-cored cylindrical coil 3-5 that the second connecting rod 5 that is connected with the cam mechanism 1 bottom other end passes magnetic actuation mechanism 3 are threaded connection.
Described piezoelectric actuating mechanism 2 is piezoelectric pile.
Compared to the prior art, the present invention has following advantage:
1, piezoelectric actuating mechanism 2 does not switch on, and the air-cored cylindrical coil 3-5 of magnetic actuation mechanism 3 does not switch on, and cam mechanism 1 does not produce deformation.
2, piezoelectric actuating mechanism 2 energisings, piezoelectric actuating mechanism 2 expands, and the air-cored cylindrical coil 3-5 of magnetic actuation mechanism 3 does not switch on, and cam mechanism 1 top produces deformation, cam mechanism 1 upper end output micrometric displacement and power.
3, piezoelectric actuating mechanism 2 does not switch on, air-cored cylindrical coil 3-5 to magnetic actuation mechanism 3 applies a certain amount of and electric current certain orientation, the air-cored cylindrical coil 3-5 of energising produces the magnetic field with cylinder permanent magnet 3-3 opposite direction, and then produce an Ampere force that repels mutually, under the Ampere force effect of repelling mutually, cam mechanism 1 bottom produces deformation, the cam mechanism 1 upper end large displacement of output and power.
4, piezoelectric actuating mechanism 2 does not switch on, air-cored cylindrical coil 3-5 to magnetic actuation mechanism 3 is continuously applied a certain amount of and electric current certain orientation, the air-cored cylindrical coil 3-5 of energising produces the lasting magnetic field with cylinder permanent magnet 3-3 opposite direction, and then produce a lasting Ampere force that repels mutually, under the lasting Ampere force effect of repelling mutually, cam mechanism 1 bottom produces deformation and is held, and the cam mechanism 1 upper end large displacement of output is held.
5, piezoelectric actuating mechanism 2 energisings, piezoelectric actuating mechanism 2 expands, be continuously applied a certain amount of and electric current certain orientation to the air-cored cylindrical coil 3-5 of magnetic actuation mechanism 3 equally, the air-cored cylindrical coil 3-5 of energising produces the lasting magnetic field with cylinder permanent magnet 3-3 opposite direction, and then produce a lasting Ampere force that repels mutually, under the lasting Ampere force effect of repelling mutually, cam mechanism 1 bottom produces deformation and is held, cam mechanism 1 top produces deformation, and the cam mechanism 1 upper end large displacement of output realizes fine setting.
Description of drawings
Fig. 1 is the magnetic that the present invention is based on triangle geometric displacement enlarger-piezoelectric actuator structural representation.
Fig. 2 is cam mechanism 1 structural representation.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
as shown in Figure 1, magnetic-piezoelectric actuator based on triangle geometric displacement enlarger, described actuator is that cross section is the actuator of cam mechanism 1, the waist of described cam mechanism 1 is provided with the compliant mechanism 1-1 that wall thickness dwindles, in described cam mechanism 1 inside, compliant mechanism 1-1 top is embedded with piezoelectric actuating mechanism 2, in described compliant mechanism 1-1 bottom, cam mechanism 1 bottom is connected with magnetic actuation mechanism 3, described magnetic actuation mechanism 3 comprises shell 3-1, be placed in the outer space concave cylindrical magnetic conductor 3-2 in shell 3-1, described outer space concave cylindrical magnetic conductor 3-2 is connected by magnetic force with an end of putting cylinder permanent magnet 3-3 in the inner, the cylinder permanent magnet 3-3 other end is connected by magnetic force with the interior cylinder magnetic conductor 3-4 in being placed in outer space concave cylindrical magnetic conductor 3-2, in gap between outer space concave cylindrical magnetic conductor 3-2 and interior cylinder magnetic conductor 3-4, cover has air-cored cylindrical coil 3-5, the first end cap 3-6 and outer space concave cylindrical magnetic conductor 3-2 that the head rod 4 that is connected with cam mechanism 1 bottom one end passes magnetic actuation mechanism 3 are threaded connection, and the second end cap 3-7 and air-cored cylindrical coil 3-5 that the second connecting rod 5 that is connected with the cam mechanism 1 bottom other end passes magnetic actuation mechanism 3 are threaded connection.
The preferred embodiment of the present invention the most, described piezoelectric actuating mechanism 2 is piezoelectric pile.
Be illustrated in figure 2 as the structural representation of cam mechanism 1, at its waist, be provided with the compliant mechanism 1-1 that wall thickness dwindles.The setting of this compliant mechanism 1-1, do not affect mutually the action of the magnetic actuation mechanism 3 of the piezoelectric actuating mechanism 2 on compliant mechanism 1-1 top and bottom.
As shown in Figure 1, operation principle of the present invention is: piezoelectric actuating mechanism 2 does not switch on, and the air-cored cylindrical coil 3-5 of magnetic actuation mechanism 3 does not switch on, and cam mechanism 1 does not produce deformation.
2 energisings of piezoelectric actuating mechanism, piezoelectric actuating mechanism 2 expands, and the air-cored cylindrical coil 3-5 of magnetic actuation mechanism 3 does not switch on, and cam mechanism 1 top produces deformation, cam mechanism 1 upper end output micrometric displacement and power.
2 energisings of piezoelectric actuating mechanism, piezoelectric actuating mechanism 2 expands, be continuously applied a certain amount of and electric current certain orientation to the air-cored cylindrical coil 3-5 of magnetic actuation mechanism 3 equally, the air-cored cylindrical coil 3-5 of energising produces the lasting magnetic field with cylinder permanent magnet 3-3 opposite direction, and then produce a lasting Ampere force that repels mutually, under the lasting Ampere force effect of repelling mutually, cam mechanism 1 bottom produces deformation and is held, cam mechanism 1 top produces deformation, and the cam mechanism 1 upper end large displacement of output realizes fine setting.
Claims (2)
1. based on the magnetic-piezoelectric actuator of triangle geometric displacement enlarger, it is characterized in that: described actuator is that cross section is the actuator of cam mechanism (1), the waist of described cam mechanism (1) is provided with the compliant mechanism (1-1) that wall thickness dwindles, in described cam mechanism (1) inside, compliant mechanism (1-1) top is embedded with piezoelectric actuating mechanism (2), in described compliant mechanism (1-1) bottom, cam mechanism (1) bottom is connected with magnetic actuation mechanism (3), described magnetic actuation mechanism (3) comprises shell (3-1), be placed in the outer space concave cylindrical magnetic conductor (3-2) in shell (3-1), described outer space concave cylindrical magnetic conductor (3-2) is connected by magnetic force with an end of putting cylinder permanent magnet (3-3) in the inner, cylinder permanent magnet (3-3) other end is connected by magnetic force with the interior cylinder magnetic conductor (3-4) in being placed in outer space concave cylindrical magnetic conductor (3-2), in gap between outer space concave cylindrical magnetic conductor (3-2) and interior cylinder magnetic conductor (3-4), cover has air-cored cylindrical coil (3-5), the first end cap (3-6) and outer space concave cylindrical magnetic conductor (3-2) that the head rod (4) that is connected with cam mechanism (1) bottom one end passes magnetic actuation mechanism (3) are threaded connection, and the second end cap (3-7) and air-cored cylindrical coil (3-5) that the second connecting rod (5) that is connected with cam mechanism (1) the bottom other end passes magnetic actuation mechanism (3) are threaded connection.
2. magnetic-the piezoelectric actuator based on triangle geometric displacement enlarger according to claim 1 is characterized in that: described piezoelectric actuating mechanism (2) is piezoelectric pile.
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| CN2013102693804A CN103391028A (en) | 2013-06-28 | 2013-06-28 | Magnetism-piezoelectricity actuator based on triangular geometric displacement amplifying mechanism |
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| CN2013102693804A CN103391028A (en) | 2013-06-28 | 2013-06-28 | Magnetism-piezoelectricity actuator based on triangular geometric displacement amplifying mechanism |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119079A (en) * | 2007-09-13 | 2008-02-06 | 上海大学 | Triangle bended plate type piezoelectric straight line ultrasound electric motor |
| CN101412020A (en) * | 2008-11-19 | 2009-04-22 | 南京航空航天大学 | Combined wide-band actuator system and actuator thereof |
| CN103023374A (en) * | 2012-12-28 | 2013-04-03 | 东南大学 | Inertia type piezoelectric linear motor |
-
2013
- 2013-06-28 CN CN2013102693804A patent/CN103391028A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119079A (en) * | 2007-09-13 | 2008-02-06 | 上海大学 | Triangle bended plate type piezoelectric straight line ultrasound electric motor |
| CN101412020A (en) * | 2008-11-19 | 2009-04-22 | 南京航空航天大学 | Combined wide-band actuator system and actuator thereof |
| CN103023374A (en) * | 2012-12-28 | 2013-04-03 | 东南大学 | Inertia type piezoelectric linear motor |
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Inventor after: An Zengyong Inventor after: Xu Minglong Inventor after: Yu Xinzhan Inventor after: Wei Juanfang Inventor after: Di Chongpu Inventor after: Zhang Shuwen Inventor after: Yang Keya Inventor after: Chen Jie Inventor after: Feng Bo Inventor before: An Zengyong Inventor before: Xu Minglong Inventor before: Di Chongpu Inventor before: Zhang Shuwen Inventor before: Yang Keya Inventor before: Chen Jie Inventor before: Feng Bo |
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Free format text: CORRECT: INVENTOR; FROM: AN ZENGYONG XU MINGLONG ZHAI CHONGPU ZHANG SHUWEN YANG KEYA CHEN JIE FENG BO TO: AN ZENGYONG XU MINGLONG YU XINZHAN WEI JUANFANG ZHAI CHONGPU ZHANG SHUWEN YANG KEYA CHEN JIE FENG BO |
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Application publication date: 20131113 |