CN116760251A - Novel three-degree-of-freedom translational actuator - Google Patents
Novel three-degree-of-freedom translational actuator Download PDFInfo
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- CN116760251A CN116760251A CN202310975929.5A CN202310975929A CN116760251A CN 116760251 A CN116760251 A CN 116760251A CN 202310975929 A CN202310975929 A CN 202310975929A CN 116760251 A CN116760251 A CN 116760251A
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- 230000000712 assembly Effects 0.000 claims abstract description 29
- 238000000429 assembly Methods 0.000 claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 235000014676 Phragmites communis Nutrition 0.000 claims description 7
- 230000002146 bilateral effect Effects 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 4
- 238000013519 translation Methods 0.000 claims description 3
- 244000089486 Phragmites australis subsp australis Species 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 9
- 238000006073 displacement reaction Methods 0.000 description 10
- 230000006698 induction Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 244000273256 Phragmites communis Species 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
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- 238000004891 communication Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
- H02K33/18—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
Abstract
The invention relates to a novel three-degree-of-freedom translational actuator. The invention comprises a supporting seat; a driving seat; the XY direction driving mechanism comprises an X direction electromagnetic actuating unit and a Y direction electromagnetic actuating unit which are respectively connected with the driving seat; the Z-direction driving mechanism comprises a Z-direction electromagnetic actuating unit connected with the driving seat; the X-direction electromagnetic actuating unit and the Y-direction electromagnetic actuating unit both comprise: the first rotor assembly comprises a first rotor iron core and a first permanent magnet; the two first stator assemblies comprise a first stator iron core and a first stator coil, and the first stator assemblies drive the controlled object to translate along the XY direction; the Z-direction electromagnetic actuating unit comprises: the second rotor assembly comprises a second rotor iron core and a second permanent magnet; the two second stator assemblies comprise a second stator core and a second stator coil, and the controlled object is driven to translate along the Z direction through the second rotor assemblies. The invention can realize stable movement of the controlled object in X, Y, Z directions and precise position control.
Description
Technical Field
The invention relates to the technical field of precise servo drive control, in particular to a novel three-degree-of-freedom translational actuator.
Background
In the micro-displacement motion control in the optical field, the resolution of the system can be improved by a micro-scanning scheme, and the micro-displacement motion control can be divided into motor-driven micro-scanning, piezoelectric ceramic actuator-driven micro-scanning and electromagnetic actuator-driven micro-scanning according to different driving elements in the micro-scanning process. The motor driving mode has the problem of low control bandwidth; the piezoelectric ceramic actuator driving mode has the problem of small stroke. The driving mode of the electromagnetic actuator can simultaneously meet the requirements of higher control bandwidth and relatively larger movement stroke, and is an ideal choice for micro-displacement scanning control under a large field of view. The development of the optical scanning technology promotes the progress of the multi-degree-of-freedom micro-displacement driving control technology. Compared with the existing single-degree-of-freedom and double-degree-of-freedom micro-displacement driving control technology, the three-degree-of-freedom micro-displacement driving control technology has more advantages in scanning positioning and focal length adjustment.
Most of the existing micro-displacement driving mechanisms realize three-degree-of-freedom motion by orthogonal combination superposition of three single-degree-of-freedom micro-displacement modules, and have the problems of low system integration level, large size, large volume and the like. Moreover, in different optical applications, it is often necessary to keep the micro-displacement driving mechanism with hollow structural characteristics so as to ensure the light path to pass through, and a more mature three-degree-of-freedom micro-displacement driving mechanism solution is lacking.
Disclosure of Invention
Therefore, the novel three-degree-of-freedom translational actuator provided by the invention can realize stable movement and precise position control of a controlled object in X, Y, Z directions, and has the characteristics of high integration level, high response speed and large stroke.
In order to solve the technical problems, the invention provides a novel three-degree-of-freedom translational actuator, which comprises:
a support base;
the driving seat is movably connected with the supporting seat and is connected with a controlled object;
the XY direction driving mechanism comprises an X direction electromagnetic actuating unit and a Y direction electromagnetic actuating unit which are respectively connected with the driving seat;
the Z-direction driving mechanism comprises a Z-direction electromagnetic actuating unit connected with the driving seat;
wherein, the X-direction electromagnetic actuating unit and the Y-direction electromagnetic actuating unit each comprise:
the first rotor assembly comprises a first rotor iron core and first permanent magnets connected to two opposite side surfaces of the first rotor iron core;
the two first stator assemblies are symmetrically arranged on two opposite sides of the first rotor iron core, each first stator assembly comprises a first stator iron core and a first stator coil adhered to one surface of the first stator iron core opposite to the first rotor iron core, the first stator coils are electrified in a magnetic field generated by the first permanent magnet, so that the first rotor assemblies are stressed, the output direction of the first rotor assemblies can be changed by changing the current direction in the first stator coils, and the first rotor assemblies drive the driving seat to drive the controlled object to translate along the XY direction;
wherein, the Z-direction electromagnetic actuating unit includes:
the second rotor assembly comprises a second rotor iron core and second permanent magnets connected to two opposite side surfaces of the second rotor iron core;
the two second stator components are symmetrically arranged on two opposite sides of the second rotor core, each second stator component comprises a second stator core and a second stator coil adhered to one surface of the second stator core opposite to the second rotor core, each second stator coil is electrified in a magnetic field generated by a second permanent magnet, so that the second rotor component is stressed, the output direction of the second rotor component can be changed by changing the current direction in the second stator coil, and the second rotor component drives the driving seat to drive the controlled object to translate along the Z direction.
In one embodiment of the invention, the driving seat comprises a rotor connecting piece, an upper mounting plate, an upper elastic sheet connected to the upper mounting plate, a lower elastic sheet connected to the rotor connecting piece, a rotor center seat with upper and lower ends respectively connected with the upper elastic sheet and the second rotor core, and a support column connected between the rotor connecting piece and the upper mounting plate, wherein the second rotor core is connected to the lower elastic sheet, and the upper and lower ends of the support column are respectively connected with the upper mounting plate and the lower elastic sheet.
In one embodiment of the present invention, two sets of opposite end edges on the mover connection member are respectively connected to the first mover assemblies of the X-direction electromagnetic actuating unit and the Y-direction electromagnetic actuating unit.
In one embodiment of the present invention, the two X-direction electromagnetic actuating units and the two Y-direction electromagnetic actuating units are orthogonally distributed.
In one embodiment of the invention, the supporting seat comprises a base and an upper mounting seat connected with the base, wherein an X-direction linear guide rail and an X-axis sliding plate which is connected with the X-direction linear guide rail in a sliding manner are arranged on the upper end face of the upper mounting seat, a Y-direction linear guide rail is arranged on the upper end face of the X-axis sliding plate, and the upper mounting plate is connected with the Y-direction linear guide rail in a sliding manner.
In one embodiment of the present invention, a receiving cavity for receiving the X-direction electromagnetic actuating unit, the Y-direction electromagnetic actuating unit and the Z-direction electromagnetic actuating unit is formed between the base and the upper mounting base, two first stator assemblies of each of the X-direction electromagnetic actuating unit and the Y-direction electromagnetic actuating unit are respectively connected to the base and the upper mounting base, and two second stator assemblies of each of the Z-direction electromagnetic actuating unit are respectively connected to the base and the upper mounting base.
In one embodiment of the present invention, the first permanent magnet is a rectangular permanent magnet, the first mover core has a bilateral symmetry structure, and the two first permanent magnets are symmetrically arranged along the bilateral symmetry section of the first mover core above and below the first mover core, but the magnetic pole directions are opposite.
In one embodiment of the present invention, the second permanent magnet is an annular permanent magnet, four second permanent magnets are symmetrically arranged on two opposite sides of the second mover core along a center, the four second permanent magnets can generate four magnetic field loops which are symmetrical in pairs in a left-right direction, and the four magnetic field loops are simultaneously symmetrical about an initial position of the second mover core.
In one embodiment of the present invention, the controlled object is a lens assembly, including a lens pressing cover and a lens body mounted in the mover center seat through the lens pressing cover.
In one embodiment of the present invention, the upper and lower elastic pieces are reed pieces.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the novel three-degree-of-freedom translational actuator, the structure mode of overlapping the existing X, Y, Z three-degree-of-freedom modules layer by layer is abandoned, the rotor component of the X, Y, Z three-direction actuator directly drives a controlled object to move, the real-time response characteristic is good, and stable movement and precise position control of the controlled object in the three directions of X, Y, Z can be realized; the rotor has fewer transmission parts, the whole rotor has small mass, and the response speed and the control bandwidth are improved; the design of the symmetrical structure of the Z-direction iron core and the upper and lower reeds not only enhances the Z-direction force, but also improves the stability of the system.
Drawings
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.
FIG. 1 is a schematic diagram of the overall structure of a three-degree-of-freedom translational actuator of the present invention.
FIG. 2 is a schematic diagram of the overall cross-sectional structure of the three-degree-of-freedom translational actuator of the present invention.
Fig. 3 is a schematic view of the structure of the driving seat of the present invention.
Fig. 4 is a schematic diagram of the composition structure of the X-direction electromagnetic actuating unit and the Y-direction electromagnetic actuating unit of the present invention.
Fig. 5 is a schematic view of the structure of the support base of the present invention.
Fig. 6 is a schematic view of the structure of the Z-direction electromagnetic actuating unit of the present invention.
Fig. 7 is a schematic diagram showing a sectional structure of the Z-direction electromagnetic actuating unit of the present invention.
Fig. 8 is a cross-sectional view in the X direction of the Z-direction drive mechanism of the present invention.
Fig. 9 is a graph showing force analysis of the X-direction electromagnetic actuator unit and the Y-direction electromagnetic actuator unit according to the present invention.
Fig. 10 is a graph showing the force analysis of the Z-direction electromagnetic actuating unit according to the present invention.
Description of the specification reference numerals:
1. a support base; 11. a base; 12. an upper mounting seat; 13. an X-direction linear guide rail; 14. an X-axis sliding plate; 15. a Y-direction linear guide rail;
2. a driving seat; 21. a mover connection member; 22. an upper mounting plate; 23. an upper elastic sheet; 24. a lower elastic sheet; 25. a rotor center seat; 26. a support column;
3A, X to an electromagnetic actuating unit; 3B, Y to an electromagnetic actuating unit; 31. a first mover core; 32. a first permanent magnet; 33. a first stator core; 34. a first stator coil; 35. a coil hub;
4. a Z-direction electromagnetic actuating unit; 41. a second mover core; 42. a second permanent magnet; 42a, an inner annular permanent magnet; 42b, outer annular permanent magnets; 43. a second stator core; 44. a second stator coil; 45. an iron core retainer ring; 46. a bolt; 47. a cross hole round head small screw;
51. a lens gland; 52. a lens body; 53. the gland fastens the screw.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the invention and practice it.
In the present invention, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present invention, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present invention, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present invention, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
Referring to fig. 1 to 10, a novel three-degree-of-freedom translational actuator of the present invention includes:
a support base 1;
the driving seat 2 is movably connected with the supporting seat 1 and is connected with a controlled object;
the XY direction driving mechanism comprises an X direction electromagnetic actuating unit 3A and a Y direction electromagnetic actuating unit 3B which are respectively connected with the driving seat 2;
the Z-direction driving mechanism comprises a Z-direction electromagnetic actuating unit 4 connected with the driving seat 2;
wherein the X-direction electromagnetic actuating unit 3A and the Y-direction electromagnetic actuating unit 3B each include:
the first rotor assembly comprises a first rotor core 31 and first permanent magnets 32 connected to two opposite sides of the first rotor core 31;
the two first stator assemblies are symmetrically arranged at two opposite sides of the first rotor core 31, each first stator assembly comprises a first stator core 33 and a first stator coil 34 adhered to one surface of the first stator core 33 opposite to the first rotor core 31, the first stator coils 34 are electrified in a magnetic field generated by the first permanent magnets 32, so that the first stator assemblies are stressed, the output direction of the first stator assemblies can be changed by changing the current direction in the first stator coils 34, and the first stator assemblies drive the driving seat 2 to drive the controlled object to translate along the XY direction;
wherein, the Z-direction electromagnetic actuating unit 4 comprises:
the second rotor assembly comprises a second rotor core 41 and second permanent magnets 42 connected to two opposite sides of the second rotor core 41;
the two second stator components are symmetrically arranged on two opposite sides of the second rotor core 41, each second stator component comprises a second stator core 43 and a second stator coil 44 which is adhered to one surface of the second stator core 43 opposite to the second rotor core 41, the second stator coil 44 is electrified in a magnetic field generated by a second permanent magnet 42, so that the second rotor component is stressed, the output direction of the second rotor component can be changed by changing the current direction in the second stator coil 44, and the second rotor component drives the driving seat 2 to drive the controlled object to translate along the Z direction.
Referring to fig. 3, the driving seat 2 includes a mover connecting member 21, an upper mounting plate 22, an upper elastic sheet 23 connected to the upper mounting plate 22, a lower elastic sheet 24 connected to the mover connecting member 21, a mover center seat 25 with upper and lower ends respectively connected to the upper elastic sheet 23 and the second mover core 41, and a support column 26 connected between the mover connecting member 21 and the upper mounting plate 22, wherein the second mover core 41 is connected to the lower elastic sheet 24, and upper and lower ends of the support column 26 are respectively connected to the upper mounting plate 22 and the lower elastic sheet 24. Through the arrangement, the second rotor core 41 of the Z-direction electromagnetic actuating unit 4 generates Z-direction motion, and as the second rotor core 41 is fixed on the lower elastic sheet 24, the lower elastic sheet 24 is stressed and generates micro deformation, so that the rotor center seat 25 is driven to move in the Z-direction, and meanwhile, the upper reed is driven to move, and the stability of the rotor center seat 25 in the two-dimensional translation direction is ensured.
In some embodiments, the upper and lower elastic pieces 23, 24 are each reed.
Referring to fig. 3, two sets of opposite end edges of the mover coupler 21 are respectively connected to the first mover assemblies of the X-direction electromagnetic actuating unit 3A and the Y-direction electromagnetic actuating unit 3B.
In this embodiment, the two X-direction electromagnetic actuating units 3A and the two Y-direction electromagnetic actuating units 3B are orthogonally distributed; the first stator assembly further includes a coil hub 35 connected to a surface of the first stator core 33 opposite to the first stator core 31, and the first stator coil 34 is wound on the coil hub 35.
Referring to fig. 5, the support base 1 includes a base 11 and an upper mounting base 12 connected to the base 11, an X-direction linear guide 13 and an X-axis sliding plate 14 slidably connected to the X-direction linear guide 13 are disposed on an upper end surface of the upper mounting base 12, a Y-direction linear guide 15 is disposed on an upper end surface of the X-axis sliding plate 14, and the upper mounting plate 22 is slidably connected to the Y-direction linear guide 15. The X-direction linear guide rail 13 and the Y-direction linear guide rail 15 are fixedly connected by the X-axis slide plate 14 in a double-layer superposition mode, and the linear guide rail mainly plays a role in guiding in the X, Y direction and supporting in the Z direction.
Specifically, a receiving cavity for receiving the X-direction electromagnetic actuating unit 3A, the Y-direction electromagnetic actuating unit 3B, and the Z-direction electromagnetic actuating unit 4 is formed between the base 11 and the upper mounting base 12, two first stator assemblies of each of the X-direction electromagnetic actuating unit 3A and the Y-direction electromagnetic actuating unit 3B are respectively connected with the base 11 and the upper mounting base 12, and two second stator assemblies of the Z-direction electromagnetic actuating unit 4 are respectively connected with the base 11 and the upper mounting base 12.
Specifically, the first permanent magnets 32 are rectangular permanent magnets, the first mover core 31 has a bilateral symmetry structure, and the two first permanent magnets 32 are symmetrically arranged along the bilateral symmetry section of the first mover core 31 above and below the first mover core 31, but the magnetic pole directions are opposite. Referring to fig. 9, the first permanent magnet 32 generates a counterclockwise magnetic field by the first permanent magnet and the energized first stator coil 34; energizing the first stator coil 34 in a top-down view produces a counter-clockwise current. According to the ampere force principle, it can be determined that there is rightward electromagnetic force F1 on the first stator coil 34, and an interaction force F2 is generated on the first rotor core 31, so that the first rotor core 31 and the first permanent magnet 32 are driven to move, and when the current direction is changed, an acting force in the opposite direction can be obtained, so that reciprocating translation in one-dimensional direction is realized, and the other direction is the same as the principle.
Specifically, the second permanent magnet 42 is an annular permanent magnet, four second permanent magnets 42 are symmetrically arranged on two opposite sides of the second mover core 41 along the center, the four second permanent magnets 42 can generate four magnetic field loops that are symmetrical in pairs in the left-right direction, and the four magnetic field loops are simultaneously symmetrical about the initial position of the second mover core 41.
Referring to fig. 10, a cross-sectional view of the Z-direction electromagnetic actuator 4 in the X-direction is shown, and analysis is performed by taking a left magnetic field circuit as an example. Four annular permanent magnets are symmetrically distributed, two upper and lower annular permanent magnets are respectively arranged, the S pole of the inner annular permanent magnet is arranged at the lower part, the N pole is arranged at the upper part, the N pole of the outer annular permanent magnet is arranged at the lower part, the S pole is arranged at the upper part, and the magnetic induction line loop direction is anticlockwise; the upper annular permanent magnet is provided with an inner annular permanent magnet with an N pole at the lower part, an S pole at the upper part and an outer annular permanent magnet with an S pole at the lower part, and the N pole at the upper part and the magnetic induction line loop direction are clockwise. The permanent magnet layout scheme enables the upper ring-shaped permanent magnet and the lower ring-shaped permanent magnet to form two symmetrical magnetic field loops, and when the second stator coil 44 is not electrified, the second stator core 43 receives magnetic field forces from the upper ring-shaped permanent magnet and the lower ring-shaped permanent magnet, the magnetic field forces are equal in magnitude and opposite in direction, and the magnetic field forces just cancel each other out, so that the second rotor assembly is kept stationary.
When the second stator coil 44 is energized, and a counterclockwise current in the view direction is applied, and the left iron core is taken as an example for analysis, the current direction is directed to the outside of the paper, so that a counterclockwise magnetic induction loop is generated, and the direction of the counterclockwise magnetic induction loop is the same as that of the magnetic induction loop of the lower annular permanent magnet, the magnetic field strength formed by the lower annular permanent magnet is enhanced, the magnetic field strength of the upper annular permanent magnet is partially offset, and the magnetic field strength is weakened. The resultant force of the magnetic fields received by the second mover core 41 is directed downward. The right magnetic field loop assumes a symmetrical condition with respect to the left, and eventually the second mover core 41 is still subjected to a downward magnetic force. Similarly, the second mover core 41 is forced downward to control the mover center 25 to move downward on the entire annular Z actuator. Changing the direction of the current of the second stator coil 44 may change the direction of the force applied by the second sub-assembly. Considering that the exciting coil and the mover core form a negative stiffness system, annular permanent magnets are arranged at two sides of the second mover core 41 and are symmetrically distributed, and meanwhile, upper reeds and lower reeds are arranged at the upper side and the lower side of the mover center seat 25, so that the overall structure reduces the negative stiffness of the system and increases the stability of the second mover core 41.
In this embodiment, referring to fig. 8, the controlled object is a lens assembly, and includes a lens pressing cover 51 and a lens body 52 mounted in the sub-center 25 through the lens pressing cover 51. The invention enables the mover components of the actuator in the X, Y, Z directions to directly drive the controlled object to move, has better real-time response characteristic, and can realize stable movement and precise position control of the lens component in the X, Y, Z directions.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a novel three degree of freedom translation actuators which characterized in that includes:
a support base (1);
the driving seat (2) is movably connected with the supporting seat (1) and is connected with a controlled object;
the XY direction driving mechanism comprises an X direction electromagnetic actuating unit (3A) and a Y direction electromagnetic actuating unit (3B) which are respectively connected with the driving seat (2);
the Z-direction driving mechanism comprises a Z-direction electromagnetic actuating unit (4) connected with the driving seat (2);
wherein the X-direction electromagnetic actuating unit (3A) and the Y-direction electromagnetic actuating unit (3B) each comprise:
the first rotor assembly comprises a first rotor iron core (31) and first permanent magnets (32) connected to two opposite side surfaces of the first rotor iron core (31);
the two first stator assemblies are symmetrically arranged on two opposite sides of the first rotor core (31), each first stator assembly comprises a first stator core (33) and a first stator coil (34) adhered to one surface of the first stator core (33) opposite to the first rotor core (31), the first stator coils (34) are electrified in a magnetic field generated by the first permanent magnets (32), so that the first rotor assemblies are stressed, the output direction of the first rotor assemblies can be changed by changing the current direction in the first stator coils (34), and the first rotor assemblies drive the driving seat (2) to drive the controlled object to translate along the XY direction;
wherein the Z-direction electromagnetic actuating unit (4) comprises:
the second rotor assembly comprises a second rotor iron core (41) and second permanent magnets (42) connected to two opposite side surfaces of the second rotor iron core (41);
the two second stator assemblies are symmetrically arranged on two opposite sides of the second rotor core (41), each second stator assembly comprises a second stator core (43) and a second stator coil (44) adhered to one surface of the second stator core (43) opposite to the second rotor core (41), the second stator coils (44) are electrified in a magnetic field generated by the second permanent magnet (42), so that the second rotor assemblies are stressed, the output direction of the second rotor assemblies can be changed by changing the current direction in the second stator coils (44), and the second rotor assemblies drive the driving seat (2) to drive the controlled object to translate along the Z direction.
2. The novel three-degree-of-freedom translational actuator of claim 1, wherein the driving seat (2) comprises a rotor connecting piece (21), an upper mounting plate (22), an upper elastic sheet (23) connected to the upper mounting plate (22), a lower elastic sheet (24) connected to the rotor connecting piece (21), a rotor center seat (25) with upper and lower ends respectively connected to the upper elastic sheet (23) and the second rotor core (41), and a support column (26) connected between the rotor connecting piece (21) and the upper mounting plate (22), wherein the second rotor core (41) is connected to the lower elastic sheet (24), and the upper and lower ends of the support column (26) are respectively connected to the upper mounting plate (22) and the lower elastic sheet (24).
3. A novel three-degree-of-freedom translational actuator according to claim 2, wherein two sets of opposite end edges of the mover connecting member (21) are respectively connected to the first mover assemblies of the X-direction electromagnetic actuating unit (3A) and the Y-direction electromagnetic actuating unit (3B).
4. A novel three-degree-of-freedom translational actuator according to claim 3, wherein the two X-direction electromagnetic actuating units (3A) and the two Y-direction electromagnetic actuating units (3B) are orthogonally distributed.
5. The novel three-degree-of-freedom translational actuator of claim 2, wherein the supporting seat (1) comprises a base (11) and an upper mounting seat (12) connected with the base (11), an upper end surface of the upper mounting seat (12) is provided with an X-direction linear guide rail (13) and an X-axis sliding plate (14) which is slidably connected with the X-direction linear guide rail (13), an upper end surface of the X-axis sliding plate (14) is provided with a Y-direction linear guide rail (15), and the upper mounting plate (22) is slidably connected with the Y-direction linear guide rail (15).
6. The novel three-degree-of-freedom translational actuator of claim 5, wherein a containing cavity for containing the X-direction electromagnetic actuating unit (3A), the Y-direction electromagnetic actuating unit (3B) and the Z-direction electromagnetic actuating unit (4) is formed between the base (11) and the upper mounting base (12), two first stator assemblies of each of the X-direction electromagnetic actuating unit (3A) and the Y-direction electromagnetic actuating unit (3B) are respectively connected with the base (11) and the upper mounting base (12), and two second stator assemblies of the Z-direction electromagnetic actuating unit (4) are respectively connected with the base (11) and the upper mounting base (12).
7. The novel three-degree-of-freedom translational actuator according to claim 1, wherein the first permanent magnet (32) is a rectangular permanent magnet, the first rotor core (31) is in a bilateral symmetry structure, and the two first permanent magnets (32) are arranged above and below the first rotor core (31) symmetrically along the bilateral symmetry section of the first rotor core (31), but the magnetic pole directions are opposite.
8. The novel three-degree-of-freedom translational actuator according to claim 1, wherein the second permanent magnet (42) is an annular permanent magnet, four second permanent magnets (42) are symmetrically arranged on two opposite sides of the second mover core (41) along the center, the four second permanent magnets (42) can generate four magnetic field loops which are symmetrical in pairs in the left-right direction, and the four magnetic field loops are simultaneously symmetrical about the initial position of the second mover core (41).
9. The novel three-degree-of-freedom translational actuator of claim 2, wherein the controlled object is a lens assembly, and comprises a lens gland (51) and a lens body (52) mounted in the mover center seat (25) through the lens gland (51).
10. A novel three-degree-of-freedom translational actuator according to claim 2, wherein the upper elastic sheet (23) and the lower elastic sheet (24) are reeds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310975929.5A CN116760251A (en) | 2023-08-04 | 2023-08-04 | Novel three-degree-of-freedom translational actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310975929.5A CN116760251A (en) | 2023-08-04 | 2023-08-04 | Novel three-degree-of-freedom translational actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116760251A true CN116760251A (en) | 2023-09-15 |
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ID=87949920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310975929.5A Pending CN116760251A (en) | 2023-08-04 | 2023-08-04 | Novel three-degree-of-freedom translational actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116760251A (en) |
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2023
- 2023-08-04 CN CN202310975929.5A patent/CN116760251A/en active Pending
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