CN113562203B - Electromagnetic actuator with redundant air gaps - Google Patents
Electromagnetic actuator with redundant air gaps Download PDFInfo
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- CN113562203B CN113562203B CN202110752772.0A CN202110752772A CN113562203B CN 113562203 B CN113562203 B CN 113562203B CN 202110752772 A CN202110752772 A CN 202110752772A CN 113562203 B CN113562203 B CN 113562203B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/645—Separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F3/14—Constrictions; Gaps, e.g. air-gaps
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Abstract
The invention provides an electromagnetic actuator with redundant air gaps, which comprises a stator and a rotor, wherein the stator comprises a stator frame, a magnetic yoke, a magnetism isolating ring, a magnetic ring and a lock nut; the mover includes a coil bobbin and a loop coil. The invention forms an upper and a lower double permanent magnetic branch magnetic circuits in a single-layer magnetic pole structure, realizes the shunting of permanent magnetic flux so as to relieve the whole magnetic saturation, and the adopted magnetism isolating ring plays a role of a redundant air gap so as to further relieve the local magnetic saturation of the magnetic yoke, effectively reduce the axial and radial dimensions and facilitate the installation and carrying. The invention has the advantages of repeated use, high thrust density, small volume and light weight, and realizes the time-sharing speed-regulating release of the nano-satellite with different masses.
Description
Technical Field
The invention relates to an electromagnetic actuator with redundant air gaps, and belongs to the technical field of aerospace.
Background
The cooperative work of a plurality of satellites to complete complex space exploration tasks becomes a research hotspot in the international aerospace field, such as formation, clustering and the like. Particularly, the cube satellite has the advantages of short development period, low cost and the like, and the formed cluster has high flexibility and robustness and can complete tasks which cannot be independently completed by a large satellite or have high required cost. For the task of deploying the nano-satellites in the orbit, in order to save cost, a large amount of nano-satellites are stored and released in the orbit by using a deployer in one launching task. Because of the weak orbital control capability and limited fuel of the nano-satellites, it is desirable to be able to naturally form stable relative motion with each other by adjusting the separation speed of the nano-satellites when ejecting and separating the nano-satellites. This requires that the rail deployer implement coordinated release for different quality satellites at a particular time. And the traditional deployer adopts compression springs more, so that the repetitive and accurate release of the nano-satellite is difficult to realize, and the nano-satellite cannot be reused, so that the cost is high and the efficiency is low.
The electromagnetic actuator utilizes the electrified coil to generate electromagnetic force in a magnetic field, has high response speed and is very suitable for the deployer to repeatedly regulate the speed and release the nano-satellite. The innovation of the current numerous patents on the electromagnetic actuator is that the electromagnetic force coefficient is often improved by remolding an air gap magnetic field, and the influence of magnetic saturation of a magnetic yoke on the whole is ignored, so that the volume and the mass of the actuator are large. For aerospace applications, it is often desirable for electromagnetic actuators to be small and lightweight for ease of assembly and to reduce launch costs.
Disclosure of Invention
In order to solve the technical problems of the prior art that a small-size light-weight electromagnetic actuator is needed to be designed for facilitating assembly and reducing emission cost, the invention provides an electromagnetic actuator with a redundant air gap.
The invention provides an electromagnetic actuator with redundant air gaps, which comprises a stator and a rotor, wherein the stator comprises a stator frame, an end magnetic yoke, an outer magnetic isolation ring, an outer magnetic yoke, an outer lower magnetic ring, an outer magnetic ring, an outer upper magnetic yoke, an outer lock nut, an inner magnetic isolation ring, an inner yoke, an inner lower magnetic ring, an inner upper magnetic yoke, an inner lock nut and a main air gap;
the end magnet yoke is positioned at the bottom of an annular groove of the stator frame, the outer magnetism isolating ring is positioned at the upper end of an outer ring protrusion of the end magnet yoke, the outer magnet yoke is positioned at the upper end of the outer magnetism isolating ring, the outer lower magnet ring is positioned at the radial inner side of the outer wall of a groove of the end magnet yoke, the outer magnet ring is positioned at the upper end of the outer lower magnet ring, the outer upper magnet yoke is positioned at the upper end of the outer upper magnet ring, the outer lock nut is positioned at the upper end of the outer upper magnet yoke, the end magnet yoke, the outer magnetism isolating ring 3, the outer magnet yoke, the outer lower magnet ring, the outer upper magnet ring and the outer upper magnet yoke are fixedly arranged on the stator frame through a lock nut between the stator frame and the outer lock nut, the outer magnet ring is positioned at the upper end of an inner ring protrusion of the end magnet yoke, and the inner magnet yoke is positioned at the upper end of the inner magnetism isolating ring, the inner lower magnetic ring is located on the radial outer side of the inner wall of the end magnetic yoke groove, the inner magnetic ring is located at the upper ends of the inner magnetic yoke and the inner lower magnetic ring, the inner upper magnetic yoke is located at the upper end of the inner upper magnetic ring, the inner lock nut is located at the upper end of the inner upper magnetic yoke, the inner isolation magnetic ring, the inner magnetic yoke, the inner lower magnetic ring, the inner magnetic ring and the inner upper magnetic ring are fixedly installed on the stator frame through threads between the inner lock nut and the stator frame, main air gaps are formed between the inner walls of the outer lower magnetic ring, the outer upper magnetic yoke and the outer lock nut and the outer walls of the inner lower magnetic ring, the inner upper magnetic yoke and the inner lock nut, the coil frame is located in the main air gaps, and the annular coil is surrounded and fixed in a groove of the coil frame.
Preferably, the annular coil is wound around the groove of the coil frame and fixed by epoxy resin glue.
Preferably, the outer lower magnetic ring, the outer upper magnetic ring, the inner lower magnetic ring, the inner magnetic ring and the inner upper magnetic ring are made of cobalt alloy hard magnetic materials.
Preferably, the outer magnetic ring and the inner magnetic ring are magnetized in the radial direction, the outer lower magnetic ring, the outer upper magnetic ring, the inner lower magnetic ring and the inner upper magnetic ring are magnetized in the axial direction, and the magnetizing directions are N lower S above the outer lower magnetic ring, N inside outside the outer magnetic ring, N below S above the outer upper magnetic ring, N below S above the inner lower magnetic ring, N inside outside the inner magnetic ring and N below S above the inner upper magnetic ring.
Preferably, the outer magnetic ring and the inner magnetic ring are magnetized in the radial direction, the outer lower magnetic ring, the outer upper magnetic ring, the inner lower magnetic ring and the inner upper magnetic ring are magnetized in the axial direction, and the magnetizing directions are S lower N on the outer lower magnetic ring, S lower N inner S on the outer magnetic ring, N lower S on the outer upper magnetic ring, S lower N on the inner lower magnetic ring, N inner S on the outer inner magnetic ring and S lower N on the inner upper magnetic ring.
Preferably, the end yoke, the outer upper yoke, the inner yoke and the inner upper yoke are made of soft magnetic 1J50 material.
Preferably, the outer magnetism isolating ring and the inner magnetism isolating ring are made of titanium alloy materials.
Preferably, the width of the outer upper magnetic ring and the outer upper magnetic yoke is equal to the sum of the thicknesses of the outer yoke and the outer magnetic ring, and the width of the inner upper magnetic ring and the inner upper magnetic yoke is equal to the sum of the thicknesses of the inner yoke and the inner magnetic ring.
Preferably, the width of the outer magnetism isolating ring is equal to the thickness of the outer yoke, and the width of the inner magnetism isolating ring is equal to the thickness of the inner yoke.
The electromagnetic actuator with the redundant air gap has the beneficial effects that:
1. the double-permanent-magnet branched magnetic circuit is formed in the single-layer magnetic pole structure, the shunt of permanent magnet magnetic flux is realized, the flux density distribution in the magnetic yoke is improved, the magnetic saturation is effectively relieved, the thickness of the magnetic yoke is greatly reduced, and the volume and the mass of the electromagnetic actuator are reduced.
2. Compared with the traditional double-sided double-layer magnetic pole configuration, the double-sided single-layer magnetic pole configuration effectively reduces the axial size of the electromagnetic actuator, and is convenient for aerospace installation and carrying application.
3. The magnetism isolating ring plays a role of a redundant air gap, local magnetic saturation is effectively relieved, an auxiliary permanent magnet loop is formed, the magnetic density of an air gap at the end part is increased, a magnetic field is uniformly distributed, and compared with a traditional electromagnetic actuator, the thrust density is high and stable, and thrust fluctuation is effectively inhibited.
4. The invention can be repeatedly used, has the characteristics of large thrust density, small volume and light weight, and can realize the time-sharing speed regulation and release of the nano-satellites with different masses.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a radial cross-sectional view of an electromagnetic actuator having redundant air gaps according to the present invention;
FIG. 2 is a cross-sectional view of a stator of an electromagnetic actuator having redundant air gaps according to the present invention;
FIG. 3 is a perspective view of a mover of an electromagnetic actuator with redundant air gaps in accordance with the present invention
FIG. 4 is a schematic diagram of a dual permanent magnet shunt loop for an electromagnetic actuator with redundant air gaps according to the present invention;
FIG. 5 is a left half magnetic flux path simulation for an electromagnetic actuator having a redundant air gap according to the present invention;
the magnetic field generator comprises a stator frame 1, a stator frame 2, an end magnetic yoke 2, an outer magnetic isolating ring 3, an outer magnetic yoke 4, an outer lower magnetic ring 5, an outer magnetic ring 6, an outer upper magnetic ring 7, an outer upper magnetic yoke 8, an outer lock nut 9, an inner magnetic isolating ring 10, an inner magnetic yoke 11, an inner lower magnetic ring 12, an inner magnetic ring 13, an inner upper magnetic ring 14, an inner upper magnetic yoke 15, an inner lock nut 16 and a main air gap 17.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
the first embodiment is as follows: the present embodiment is explained with reference to fig. 1 to 5.
Fig. 1 is a radial cross-sectional view of an electromagnetic actuator according to a technical solution of the present invention, which mainly includes a stator and a mover, and is characterized in that the stator mainly includes: the magnetic field excitation type magnetic field excitation motor comprises a stator frame 1, an end magnet yoke 2, an outer magnetism isolating ring 3, an outer magnet yoke 4, an outer lower magnet ring 5, an outer magnet ring 6, an outer upper magnet ring 7, an outer upper magnet yoke 8, an outer locknut 9, an inner magnetism isolating ring 10, an inner magnet yoke 11, an inner lower magnet ring 12, an inner magnet ring 13, an inner upper magnet ring 14, an inner upper magnet yoke 15, an inner locknut 16 and a main air gap 17; the active cell mainly includes: a bobbin 18 and a loop coil 19; the end magnet yoke 2 is positioned at the bottom of an annular groove of the stator frame 1, the outer magnetism isolating ring 3 is positioned at the axial upper end of an outer ring protrusion of the end magnet yoke 2, the magnet yoke 4 is positioned at the axial upper end of the outer magnetism isolating ring 3, the outer lower magnet ring 5 is positioned at the radial inner side of the outer wall of a groove of the end magnet yoke 2, the outer magnet ring 6 is positioned at the axial upper end of the outer lower magnet ring 5, the outer upper magnet ring 7 is positioned at the axial upper end of the outer upper magnet ring 7, the outer locknut 9 is positioned at the axial upper end of the outer upper magnet yoke 8, the end magnet yoke 2, the outer magnetism isolating ring 3, the outer magnet yoke 4, the outer lower magnet ring 5, the outer magnet ring 6, the outer upper magnet ring 7 and the outer upper magnet yoke 8 are fixedly arranged on the stator frame 1 through the locknut between the stator frame 1 and the outer locknut 9, the inner magnetism isolating ring 10 is positioned at the axial upper end of the inner ring protrusion of the end magnet yoke 2, the inner magnet yoke 11 is positioned at the axial upper end of the inner magnetism isolating ring 10, the inner magnetism isolating ring 13 is positioned at the radial outer side of the inner magnetism isolating ring 2 groove inner magnetism isolating ring 13, the inner magnetism isolating ring 13 is positioned at the axial upper end of the inner magnetism isolating ring 11 and the inner magnetism isolating ring 12, the inner magnetism isolating ring 12 is positioned at the axial upper end of the inner magnetism isolating ring 14, the inner magnetism isolating ring 14 is positioned at the inner magnetism isolating ring 14, an inner magnetic ring 13 and an inner upper magnetic ring 14 are fixedly arranged on a stator frame 1 through threads between an inner lock nut 16 and the stator frame 1, the inner walls of an outer lower magnetic ring 5, an outer magnetic ring 6, an outer upper magnetic ring 7, an outer upper magnetic yoke 8 and an outer lock nut 9 and the outer walls of an inner lower magnetic ring 12, an inner magnetic ring 13, an inner upper magnetic ring 14, an inner upper magnetic yoke 15 and an inner lock nut 16 form a main air gap 17, a coil frame 18 is positioned in the main air gap 17, and an annular coil 19 is encircled and fixed in a groove of the coil frame 18.
Fig. 2 is a sectional view of a stator of an electromagnetic actuator according to a technical solution of the present invention, the stator mainly including: the magnetic field excitation type magnetic field excitation motor comprises a stator frame 1, an end magnet yoke 2, an outer magnetism isolating ring 3, an outer magnet yoke 4, an outer lower magnet ring 5, an outer magnet ring 6, an outer upper magnet ring 7, an outer upper magnet yoke 8, an outer locknut 9, an inner magnetism isolating ring 10, an inner magnet yoke 11, an inner lower magnet ring 12, an inner magnet ring 13, an inner upper magnet ring 14, an inner upper magnet yoke 15, an inner locknut 16 and a main air gap 17; the end magnetic yoke 2 is positioned at the bottom of an annular groove of the stator frame 1, the outer magnetism isolating ring 3 is positioned at the axial upper end of the outer ring bulge of the end magnetic yoke 2, the magnetic yoke 4 is positioned at the axial upper end of the outer magnetism isolating ring 3, the outer lower magnetic ring 5 is positioned at the radial inner side of the outer wall of the groove of the end magnetic yoke 2, the outer magnetic ring 6 is positioned at the axial upper end of the outer lower magnetic ring 5, the outer upper magnetic ring 7 is positioned at the axial upper ends of the outer lower magnetic ring 5 and the outer magnetic ring 6, the outer upper magnetic yoke 8 is positioned at the axial upper end of the outer upper magnetic ring 7, the outer lock nut 9 is positioned at the axial upper end of the outer upper magnetic yoke 8, the end magnetic yoke 2, the outer magnetism isolating ring 3, the outer magnetic yoke 4, the outer lower magnetic ring 5, the outer magnetic ring 6, the outer upper magnetic ring 7 and the outer upper magnetic yoke 8 are fixedly arranged on the stator frame 1 through the lock nut between the stator frame 1 and the outer lock nut 9, the inner magnetic isolation ring 10 is positioned at the axial upper end of the inner ring protrusion of the end magnetic yoke 2, the inner magnetic yoke 11 is positioned at the axial upper end of the inner magnetic isolation ring 10, the inner magnetic ring 13 of the inner lower magnetic ring 12 is positioned at the radial outer side of the inner wall of the groove of the end magnetic yoke 2, the inner magnetic ring 13 is positioned at the axial upper ends of the inner magnetic yoke 11 and the inner lower magnetic ring 12, the inner upper magnetic ring 14 is positioned at the axial upper end of the inner magnetic ring 13, the inner upper magnetic yoke 15 is positioned at the axial upper end of the inner upper magnetic ring 14, the inner lock nut 16 is positioned at the axial upper end of the inner upper magnetic yoke 15, the inner magnetic isolation ring 10, the inner magnetic yoke 11, the inner lower magnetic ring 12, the inner magnetic ring 13 and the inner upper magnetic ring 14 are fixedly arranged on the stator frame 1 through the screw thread between the inner lock nut 16 and the stator frame 1, the inner walls of the outer lower magnetic ring 5, the outer magnetic ring 6, the outer upper magnetic ring 7, the outer upper magnetic yoke 8 and the outer locknut 9 and the outer walls of the inner lower magnetic ring 12, the inner magnetic ring 13, the inner upper magnetic ring 14, the inner upper magnetic yoke 15 and the inner locknut 16 form a main air gap 17.
The outer lower magnetic ring 5, the outer magnetic ring 6, the outer upper magnetic ring 7, the inner lower magnetic ring 12, the inner magnetic ring 13 and the inner upper magnetic ring 14 are made of cobalt alloy hard magnetic materials, wherein the outer magnetic ring 6 and the inner magnetic ring 13 are magnetized in a radial direction, the outer lower magnetic ring 5, the outer upper magnetic ring 7, the inner lower magnetic ring 12 and the inner upper magnetic ring 14 are magnetized in an axial direction, and the magnetizing directions are that the upper part N and the lower part S of the outer lower magnetic ring 5, the outer part S and the inner N of the outer magnetic ring 6, the upper part S and the lower part N of the outer upper magnetic ring 7, the upper part N and the lower part S of the inner lower magnetic ring 12, the outer part S and the upper part N and the lower part S of the inner magnetic ring 13, or the upper part S and the lower part N of the outer lower magnetic ring 5, the outer part N and the inner part S of the outer upper magnetic ring 6, the upper part N and the lower part S of the outer upper magnetic ring 7, the upper part S and the lower part N and the upper part N and the inner lower part N of the inner lower magnetic ring 12, the outer part N of the inner magnetic ring 13 and the upper part S and the upper part of the inner upper part of the upper magnetic ring 14. The end yoke 2, the outer yoke 4, the outer upper yoke 8, the inner yoke 11 and the inner upper yoke 15 are made of soft magnetic 1J50 materials. The outer magnetism isolating ring 3 and the inner magnetism isolating ring 10 are made of titanium alloy materials.
The widths of the outer upper magnetic ring 7 and the outer upper magnetic yoke 8 are equal to the sum of the thicknesses of the outer yoke 4 and the outer magnetic ring 6, and the widths of the inner upper magnetic ring 14 and the inner upper magnetic yoke 15 are equal to the sum of the thicknesses of the inner yoke 11 and the inner magnetic ring 13.
The width of the outer magnetism isolating ring 3 is equal to the thickness of the outer yoke 4, and the width of the inner magnetism isolating ring 10 is equal to the thickness of the inner yoke 11.
Fig. 3 is a cross-sectional view of a mover of an electromagnetic actuator according to a technical solution of the present invention, the mover mainly includes: the coil comprises a coil framework 18 and a ring coil 19, wherein the ring coil 19 surrounds the groove of the coil framework 18 and is fixed by epoxy resin glue.
Fig. 4 is a schematic diagram of a dual permanent magnet branch loop of an electromagnetic actuator according to the technical solution of the present invention, wherein an upper permanent magnet branch magnetic circuit generated by the present invention is: the upper magnetic flux starts from the N pole of the outer upper magnetic ring 7, reaches the S pole of the outer magnetic ring 6 through the upper half part of the outer yoke 4, flows out of the N pole of the outer magnetic ring 6, reaches the S pole of the inner magnetic ring 13 through the main air gap 17, flows out of the N pole of the inner magnetic ring 13, reaches the S pole of the inner upper magnetic ring 14 through the upper half part of the inner yoke 11, flows out of the N pole of the inner upper magnetic ring 14, and returns to the S pole of the outer upper magnetic ring 7 through the inner upper magnetic ring 14, the main air gap 17 and the outer upper magnetic yoke 8 in sequence.
The lower permanent magnet branch magnetic circuit produced by the invention is as follows: the lower magnetic flux starts from the N pole of the outer magnetic ring 6, reaches the S pole of the inner magnetic ring 13 through the main air gap 17, flows out from the N pole of the inner magnetic ring 13, sequentially passes through the lower half part of the inner yoke 11, the inner magnetic isolation ring 10, the end yoke 2, the outer magnetic isolation ring 3 and the outer yoke 4, and returns to the S pole of the outer magnetic ring 6; the auxiliary permanent magnetic circuit generated by the invention is as follows: the auxiliary magnetic flux starts from the N pole of the outer lower magnetic ring 5, sequentially passes through the outer magnetic ring 6, the main air gap 17 and the inner magnetic ring 13 to reach the S pole of the inner lower magnetic ring 12, and flows out of the N pole of the inner lower magnetic ring 12 to return to the S pole of the outer lower magnetic ring 5 through the end magnetic yoke 2.
Fig. 5 is a magnetic line simulation diagram of the left half of the electromagnetic actuator according to the technical solution of the present invention, and it can be seen that the magnetic lines of force obviously form an upper permanent magnetic branch magnetic circuit, a lower permanent magnetic branch magnetic circuit and an auxiliary permanent magnetic circuit, and the magnetic lines of force are uniformly distributed at the air gap, and meanwhile, the local magnetic saturation at the end splicing part is relieved, thereby verifying the novelty and feasibility of the present invention.
The working principle of the electromagnetic actuator with the redundant air gap is as follows:
an upper permanent magnetic branch magnetic circuit and a lower permanent magnetic branch magnetic circuit are formed in the single-layer magnetic pole structure, the magnetic yoke is effectively relieved by shunting the permanent magnetic flux through the branch magnetic circuits, a large permanent magnetic field is generated in the air gap, and the coil placed in the air gap generates ampere force after being electrified so as to push the nano satellite to release. The outer magnetism isolating ring 3 and the inner magnetism isolating ring 10 are made of non-magnetic-conductive titanium alloy materials, and the magnetic resistance of the outer magnetism isolating ring 3 and the inner magnetism isolating ring 10 is similar to that of an air gap, so that the outer magnetism isolating ring can be regarded as a redundant air gap, and local magnetic saturation at the end splicing part can be effectively relieved. Due to the existence of the outer magnetism isolating ring 3 and the inner magnetism isolating ring 10, the outer lower magnetism isolating ring 5 and the inner magnetism isolating ring 13 form an independent auxiliary permanent magnetism loop, and the magnetic field distribution at the end of the air gap is improved.
The generation principle of the upper permanent magnet branch magnetic circuit is as follows: the upper magnetic flux starts from the N pole of the outer upper magnetic ring 7, reaches the S pole of the outer magnetic ring 6 through the upper half part of the outer yoke 4, flows out of the N pole of the outer magnetic ring 6, reaches the S pole of the inner magnetic ring 13 through the main air gap 17, flows out of the N pole of the inner magnetic ring 13, reaches the S pole of the inner upper magnetic ring 14 through the upper half part of the inner yoke 11, flows out of the N pole of the inner upper magnetic ring 14, and returns to the S pole of the outer upper magnetic ring 7 through the inner upper magnetic ring 14, the main air gap 17 and the outer upper magnetic yoke 8 in sequence;
the generation principle of the lower permanent magnet branch magnetic circuit is as follows: the lower magnetic flux starts from the N pole of the outer magnetic ring 6, reaches the S pole of the inner magnetic ring 13 through the main air gap 17, flows out from the N pole of the inner magnetic ring 13, sequentially passes through the lower half part of the inner yoke 11, the inner magnetic isolation ring 10, the end yoke 2, the outer magnetic isolation ring 3 and the outer yoke 4, and returns to the S pole of the outer magnetic ring 6;
the generation principle of the auxiliary permanent magnetic loop is as follows: the auxiliary magnetic flux starts from the N pole of the outer lower magnetic ring 5, sequentially passes through the outer magnetic ring 6, the main air gap 17 and the inner magnetic ring 13 to reach the S pole of the inner lower magnetic ring 12, and flows out of the N pole of the inner lower magnetic ring 12 to return to the S pole of the outer lower magnetic ring 5 through the end magnetic yoke 2.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An electromagnetic actuator with redundant air gaps is characterized by comprising a stator and a rotor, wherein the stator comprises a stator frame (1), an end magnetic yoke (2), an outer magnetism isolating ring (3), an outer magnetic yoke (4), an outer lower magnetic ring (5), an outer magnetic ring (6), an outer upper magnetic ring (7), an outer upper magnetic yoke (8), an outer lock nut (9), an inner magnetism isolating ring (10), an inner magnetic yoke (11), an inner lower magnetic ring (12), an inner magnetic ring (13), an inner upper magnetic ring (14), an inner upper magnetic yoke (15), an inner lock nut (16) and a main air gap (17), and the rotor comprises a coil frame (18) and an annular coil (19);
the end magnetic yoke (2) is positioned at the bottom of an annular groove of the stator frame (1), the outer magnetism isolating ring (3) is positioned at the upper end of an outer ring protrusion of the end magnetic yoke (2), the outer yoke (4) is positioned at the upper end of the outer magnetism isolating ring (3), the outer lower magnetic ring (5) is positioned at the radial inner side of the outer wall of a groove of the end magnetic yoke (2), the outer magnetic ring (6) is positioned at the upper end of the outer lower magnetic ring (5), the outer upper magnetic ring (7) is positioned at the upper end of the outer upper magnetic ring (7), the outer lock nut (9) is positioned at the upper end of the outer upper magnetic ring (8), the end magnetic yoke (2), the outer magnetism isolating ring (3), the outer yoke (4), the outer lower magnetic ring (5), the outer magnetic ring (6), the outer upper magnetic ring (7) and the outer upper magnetic yoke (8) are fixedly arranged on the stator frame (1) through a lock nut between the end magnetic yoke (1) and the outer magnetic ring (9), the inner magnetism isolating ring (10) is positioned at the upper end of the inner magnetic ring (11) of the inner magnetic yoke (2), the inner magnetic ring (10) is positioned at the inner magnetic ring (11) and the inner magnetic ring (12), the inner magnetic ring (10) is positioned at the inner magnetic ring (2) and the inner magnetic ring (11), the inner upper magnetic ring (14) is located at the upper end of the inner magnetic ring (13), the inner upper magnetic yoke (15) is located at the upper end of the inner upper magnetic ring (14), the inner locking nut (16) is located at the upper end of the inner upper magnetic yoke (15), the inner isolation magnetic ring (10), the inner yoke (11), the inner lower magnetic ring (12), the inner magnetic ring (13) and the inner upper magnetic ring (14) are fixedly installed on the stator frame (1) through threads between the inner locking nut (16) and the stator frame (1), a main air gap (17) is formed between the inner walls of the outer lower magnetic ring (5), the outer magnetic ring (6), the outer upper magnetic ring (7), the outer upper magnetic yoke (8) and the outer locking nut (9) and the outer walls of the inner lower magnetic ring (12), the inner magnetic ring (13), the inner upper magnetic ring (14), the inner upper magnetic yoke (15) and the inner locking nut (16), the coil skeleton (18) is located in the main air gap (17), and the annular coil (19) is surrounded and fixed in a groove of the coil skeleton (18).
2. The electromagnetic actuator with the redundant air gap according to claim 1, wherein the outer lower magnetic ring (5), the outer magnetic ring (6), the outer upper magnetic ring (7), the inner lower magnetic ring (12), the inner magnetic ring (13), and the inner upper magnetic ring (14) are each a samarium cobalt hard magnetic material.
3. The electromagnetic actuator with redundant air gaps according to claim 1, wherein the outer magnetic ring (6) and the inner magnetic ring (13) are magnetized radially, the outer lower magnetic ring (5), the outer upper magnetic ring (7), the inner lower magnetic ring (12) and the inner upper magnetic ring (14) are magnetized axially in the directions of N-down S above the outer lower magnetic ring (5), N-up S inside outside the outer magnetic ring (6), N-up N above the outer upper magnetic ring (7), N-up S inside the inner lower magnetic ring (12), N-up S inside outside the inner magnetic ring (13) and N-down S above the inner upper magnetic ring (14).
4. The electromagnetic actuator with redundant air gaps according to claim 1, wherein said outer magnetic ring (6) and said inner magnetic ring (13) are magnetized radially, said outer lower magnetic ring (5), said outer upper magnetic ring (7), said inner lower magnetic ring (12), and said inner upper magnetic ring (14) are magnetized axially in a direction of up to S down N of said outer lower magnetic ring (5), up to N down S of said outer magnetic ring (6), up to N down S of said outer upper magnetic ring (7), up to S down N of said inner lower magnetic ring (12), up to N down S of said outer N down S of said inner magnetic ring (13), and up to S down N of said inner upper magnetic ring (14).
5. The electromagnetic actuator with a redundant air gap according to claim 1, characterized in that the end yoke (2), the outer yoke (4), the outer upper yoke (8), the inner yoke (11) and the inner upper yoke (15) are of magnetically soft alloy 1J50 material.
6. The electromagnetic actuator with redundant air gaps according to claim 1, characterized in that the outer magnetic isolating ring (3) and the inner magnetic isolating ring (10) are made of titanium alloy material.
7. Electromagnetic actuator with redundant air gaps according to claim 1, characterized in that the width of the outer upper magnetic ring (7) and the outer upper magnetic yoke (8) is equal to the sum of the thicknesses of the outer yoke (4) and the outer magnetic ring (6), and the width of the inner upper magnetic ring (14) and the inner upper magnetic yoke (15) is equal to the sum of the thicknesses of the inner yoke (11) and the inner magnetic ring (13).
8. Electromagnetic actuator with redundant air gaps according to claim 1, characterized in that the width of the outer magnetism isolating ring (3) is equal to the thickness of the outer yoke (4) and the width of the inner magnetism isolating ring (10) is equal to the thickness of the inner yoke (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110752772.0A CN113562203B (en) | 2021-07-02 | 2021-07-02 | Electromagnetic actuator with redundant air gaps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110752772.0A CN113562203B (en) | 2021-07-02 | 2021-07-02 | Electromagnetic actuator with redundant air gaps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113562203A CN113562203A (en) | 2021-10-29 |
| CN113562203B true CN113562203B (en) | 2022-12-13 |
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| CN201834655U (en) * | 2010-10-21 | 2011-05-18 | 岳阳鸿升电磁科技有限公司 | Electric controlled permanent magnetic chuck |
| CN102405503A (en) * | 2007-12-31 | 2012-04-04 | 勒达有限责任公司 | Electromagnetic actuator for a proportional solenoid valve |
| CN103443877A (en) * | 2011-03-16 | 2013-12-11 | Eto电磁有限责任公司 | Electromagnetic actuator device |
| CN108679084A (en) * | 2018-06-07 | 2018-10-19 | 北京石油化工学院 | A kind of axial passive magnetic bearing of high rigidity high-damping |
| CN111120510A (en) * | 2019-12-19 | 2020-05-08 | 北京哈尔贝克科技有限公司 | High-rigidity spherical Lorentz deflection bearing with auxiliary air gap |
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| FR2978883B1 (en) * | 2011-08-01 | 2013-07-26 | Moving Magnet Tech | COMPACT POSITIONING ASSEMBLY COMPRISING AN ACTUATOR AND A SENSOR INTEGRATED IN THE ACTUATOR CYLINDER HEAD |
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| CN102405503A (en) * | 2007-12-31 | 2012-04-04 | 勒达有限责任公司 | Electromagnetic actuator for a proportional solenoid valve |
| CN201834655U (en) * | 2010-10-21 | 2011-05-18 | 岳阳鸿升电磁科技有限公司 | Electric controlled permanent magnetic chuck |
| CN103443877A (en) * | 2011-03-16 | 2013-12-11 | Eto电磁有限责任公司 | Electromagnetic actuator device |
| CN108679084A (en) * | 2018-06-07 | 2018-10-19 | 北京石油化工学院 | A kind of axial passive magnetic bearing of high rigidity high-damping |
| CN111120510A (en) * | 2019-12-19 | 2020-05-08 | 北京哈尔贝克科技有限公司 | High-rigidity spherical Lorentz deflection bearing with auxiliary air gap |
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