High-frequency electromagnetic vibration table for coil design based on space filling curve

Abstract

The invention provides a high-frequency electromagnetic vibration table for coil design based on a space filling curve, which comprises an excitation iron core, an excitation coil, a magnetic pole plate, a driving coil assembly and a vibration table top, and is characterized in that the excitation coil and the driving coil assembly are consistent in shape, are correspondingly arranged and are wound along the space filling curve to form a loop structure; matched grooves or gaps are correspondingly formed in the excitation iron core and the magnetic pole plate, the excitation coil is installed in the groove of the excitation iron core, and the driving coil assembly is installed at the bottom of the vibration table top and can move up and down in the gap of the magnetic pole plate. According to the electromagnetic vibration table, the driving coil is directly and fixedly connected with the vibration table top, the mass and the axial length of the moving coil structure of the vibration table are reduced, and the maximum working frequency of the vibration table is improved; the driving coil adopts a space filling curve to cover the whole table surface, so that the effective electromagnetic driving force and the distribution uniformity of the table surface are improved, and the high-fidelity reduction of the vibration table surface to a high-frequency vibration signal is ensured.

Description

Technical Field

[0001] The invention relates to the field of design of an electromagnetic vibration table excitation system and a drive system, and in particular to a high-frequency electromagnetic vibration table with coil design based on a space filling curve. Background Art

[0002] As aerospace equipment becomes larger and the working environment becomes more complex, space satellites and aircraft engines usually need to work for a long time in an environment with periodic vibration. In order to analyze the response of the entire satellite and engine under vibration excitation, vibration tests are required to find the inherent vibration characteristics and structural defects of the spacecraft based on the test results, so as to optimize the design of the spacecraft.

[0003] An electromagnetic vibration table is an electromechanical transducer system that uses electromagnetic force to simulate and generate mechanical vibration. It is widely used in engineering research and quality control to test the performance and durability of products in various vibration environments. It is a core experimental equipment that simulates the adaptability and reliability of actual dynamic environments. This equipment can provide precisely controlled vibration to simulate conditions that may be encountered in daily use or in extreme environments. The design indicators of the vibration table mainly include maximum thrust, operating frequency range, and vibration amplitude. The traditional electromagnetic vibration table is mainly composed of a vibration table, suspension springs, air springs, excitation coils, drive coils, etc. During the operation of the vibration table, its upper limit of the operating frequency is subject to the first-order axial natural frequency of the vibration table.

[0004] At present, for the excitation system and drive system of electromagnetic vibration table, the industry and academia often use annular excitation coils and drive coils. The excitation coil is usually divided into two parts, upper and lower, and a radial magnetic field is generated in the center of the two coils. Alternating current passes through the drive coil, and the middle part of the two coils vibrates vertically. At the same time, the drive coil and the coil substructure of the vibration table are fixed, and the device to be tested is connected to the vibration table, thereby driving the vibration table and the device to be tested to perform vibration testing.

[0005] At present, the dynamic coil structure using special-shaped curved coils has been used in the manufacturing process of planar headphone diaphragms. Among them, AUDEZE has a number of patents in this field. For example, the invention publication number is US2015110339A1 "PLANARMAGNETIC ELECTRO-ACOUSTIC TRANSDUCER HAVING MULTIPLE DIAPHRAGMS", which discloses a multi-diaphragm planar magneto-electroacoustic transducer that combines a conductive circuit with a substrate to achieve uniform distribution of electromagnetic force on the diaphragm. The invention publication number is US2016093429A1 "Magnet arrays", which discloses a new type of magnet array arrangement method, which can enhance the magnetic induction intensity on one side of the permanent magnet, and can increase the force and uniformity of the headphone coil. The invention publication number is US2022312120A1 "ELECTROACOUSTIC DIAPHRAGM, TRANSDUCER, AUDIO DEVICE, AND METHODSHAVING SUBCIRCUITS", which discloses an acoustic-electric transducer device with a new magnetic element, which is arranged on both sides of the electro-acoustic diaphragm and can achieve uniform force distribution of the electro-acoustic diaphragm.

[0006] It can be seen that the current traditional design scheme of the vibration table excitation coil and drive coil has defects such as the axial resonance frequency of the vibration table dynamic coil is too low, the concentrated force on the table surface is easy to excite the bending mode of the vibration table surface, etc., which limits the improvement of the vibration table's ultimate driving frequency and table surface uniformity, and reduces the comprehensive test performance of the vibration table. Summary of the invention

[0007] In view of the defects in the prior art, an object of the present invention is to provide a high-frequency electromagnetic vibration table with coil design based on a space filling curve.

[0008] According to the present invention, a high-frequency electromagnetic vibration table with coil design based on a space filling curve comprises: an excitation core, an excitation coil, a magnetic pole plate, a driving coil assembly and a vibration table, wherein the excitation core, the magnetic pole plate and the vibration table are arranged in sequence from bottom to top, and a plurality of elastic support and limiting assemblies are evenly and firmly connected to the circumference of the vibration table;

[0009] The excitation coil and the drive coil assembly have the same shape and are arranged correspondingly. Both are wound along a space-filling curve to form a loop structure. The excitation core and the magnetic pole plate are provided with matching grooves or gaps inside. The excitation coil is installed in the groove of the excitation core, and the drive coil assembly is installed at the bottom of the vibration table and can move up and down in the gap of the magnetic pole plate.

[0010] Preferably, the space filling curve includes a Moore curve, a Hilbert curve, a square spiral curve, a multi-ring curve, a Smale horse shoe curve, a fishbone curve, and an S-shaped curve. The excitation core, the magnetic pole plate, and the vibration table are all square, and the excitation coil and the drive coil assembly are evenly distributed in the square.

[0011] Preferably, the excitation coil assembly is formed by winding enameled wire along a space-filling curve.

[0012] Preferably, the drive coil assembly comprises a drive coil and a coil gasket, and the drive coil is made of multiple layers of copper bars, which are sequentially connected end to end to form a multi-turn series spiral drive coil along a space filling curve.

[0013] Preferably, an opening is formed on the driving coil, a protrusion along a space-filling curve is formed on the bottom surface of the vibration table, and the vibration table and the driving coil are fastened and connected by screws.

[0014] Preferably, the conductors of the excitation coil and the drive coil are parallel at all places, direct current flows through the excitation coil, and alternating current flows through the drive coil.

[0015] Preferably, the gap on the magnetic pole plate is wider than the driving coil, and the driving coil can move up and down between the gaps of the magnetic pole plates.

[0016] Preferably, the slot width of the pole plate is smaller than the slot width of the excitation core, the excitation core is fastened to the pole plate by bolts, and the excitation core is provided with lead-out slots for leading out the first and tail ends of the coil.

[0017] Preferably, the vibration table top is a hollow structure or has reinforcing ribs arranged inside.

[0018] Preferably, the elastic support limit assembly includes a fixed bracket and two spring steel sheets arranged in parallel, the two spring steel sheets are respectively fastened to the upper and lower surfaces of the vibration table, and the lower part of the fixed bracket is fastened to the side of the excitation core by bolts.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention retains only the vibration table structure through the electromagnetic vibration table, and directly consolidates the coil with the vibration table, thereby greatly reducing the mass and axial length of the vibration table's dynamic coil, improving the effective thrust of the vibration table, greatly improving the longitudinal natural frequency of the vibration table, and thus significantly improving the operating frequency of the vibration table; the coil uses a space filling curve to cover the entire table, which can ensure that the electromagnetic force applied to the table is evenly distributed, avoid exciting the plate and shell bending modal deformation of the table substructure, improve the table uniformity during high-frequency vibration, and ensure high fidelity during the table vibration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 The exploded view of the electromagnetic vibration table based on the space filling curve mainly embodies the present invention;

[0023] Figure 2 This is a cross-sectional view of the assembly of the vibration platform which is mainly embodied in the present invention;

[0024] Figure 3 This is a structural diagram of a vibration table assembly based on a third-order Moore curve, which is mainly embodied in the present invention;

[0025] Figure 4 This is a diagram showing the magnetic circuit direction and force principle of the electromagnetic vibration table mainly embodied in the present invention;

[0026] Figure 5 The schematic diagram of the first to third order Moore curve coil structure mainly embodies the present invention, wherein the thick solid line is the frame of the vibration table, and the thin solid line is the direction of the coil;

[0027] Figure 6 This is a schematic diagram of the structure of a closed first to third order Hi lbert curve coil mainly embodied in the present invention;

[0028] Figure 7 This is a schematic diagram of the spiral coil structure mainly embodied in the present invention;

[0029] Figure 8 This is a schematic diagram of a multi-ring curved coil structure mainly embodied in the present invention, where two adjacent ring coils are in opposite directions and connected by a wire;

[0030] Fig. 9 The present invention mainly embodies the Smale horseshoe curve (horseshoe-shaped) coil structure schematic diagram;

[0031] Fig.10 This is a schematic diagram of the fishbone curve coil structure mainly embodied in the present invention;

[0032] Fig.11 This is a schematic diagram of the S-shaped curve coil structure mainly embodied in the present invention.

[0033] As shown in the figure:

[0034] Excitation core 100 Excitation coil 200 Magnetic pole plate 300

[0035] Driving coil assembly 400 Driving coil 401 Coil gasket 402

[0036] Vibration table 500 Elastic support limit assembly 600 Fixed bracket 601

[0037] Spring steel sheet 602 DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0039] like Figure 1-4 As shown, a high-frequency electromagnetic vibration table for coil design based on a space-filling curve according to the present invention includes: an excitation core 100, an excitation coil 200, a pole plate 300, a drive coil assembly 400 and a vibration table 500. The excitation core 100, the pole plate 300 and the vibration table 500 are arranged in sequence from bottom to top, and the peripheral side of the vibration table 500 is evenly and firmly connected with a plurality of elastic support limit assemblies 600; the excitation coil 200 and the drive coil assembly 400 are of the same shape and are correspondingly arranged, and both are wound along the space-filling curve to form a loop structure, and matching grooves or gaps are correspondingly opened inside the excitation core 100 and the pole plate 300, the excitation coil 200 is installed in the groove of the excitation core 100, and the drive coil assembly 400 is installed at the bottom of the vibration table 500, and can move up and down in the gap of the pole plate 300.

[0040] The present application relates to the field of electromagnetic vibration table excitation system and drive system design, and specifically, to an electromagnetic vibration table drive coil, excitation coil, and matching excitation core and vibration table based on space filling curves represented by Hilbert curve and Moore curve. In particular, it relates to a coil design method that can significantly increase the axial vibration natural frequency of the vibration table, reduce the mass of the vibration table moving coil, and improve the performance of the vibration table.

[0041] A space-filling curve is a curve that fills a multidimensional space with a one-dimensional curve. It has continuity, self-similarity, and ergodicity. The space-filling curve can be generated recursively. As the order increases, the curve presents a repeated similar structure at different scales and can eventually fill the entire space. The vibration table coil assembly based on the space-filling curve of the present application includes but is not limited to the following: Figures 5 to 11 The Moore curve, Hilbert curve, square spiral curve, multi-ring curve, Smale horse shoe curve, horseshoe curve and fishbone curve are shown.

[0042] Space filling curves are a type of mapping function that converts N-dimensional spatial data into a 1-dimensional continuous space. They include Hilbert curves and Moore curves. The main idea is to traverse every point in a two-dimensional or three-dimensional space through a one-dimensional continuous curve. Space filling curves have the following characteristics: continuity. Although the space filling curve is defined in a multidimensional space, it is continuous without jumps or discontinuities; self-similarity. Space filling curves are usually fractal, which means that they repeat similar structures at different scales. As the resolution increases, the curves show self-similarity; traversal. An important property of a space filling curve is that it can "fill" the entire space. Specifically, it will traverse every point in the space with infinite precision, especially every small area in two-dimensional and three-dimensional space.

[0043] Compared with the traditional annular driving coil, winding the driving coil according to the space filling curve can ensure that the electromagnetic force generated by the coil acts evenly on the surface of the vibration table plate, thus avoiding the bending mode deformation of the vibration table caused by uneven driving force.

[0044] The vibration table excitation system mainly consists of three parts, the excitation coil 200, the excitation core 100 and the pole plate 300. The function of the excitation coil 200 is to generate a magnetic field, and the function of the excitation core 100 and the pole plate 300 is to constrain the direction of the magnetic flux lines, ensure the uniformity of the magnetic field and enhance the magnetic field generated by the coil.

[0045] The excitation core 100 , the magnetic pole plate 300 , and the vibration table 500 are all in a square shape, and the excitation coil 200 and the driving coil assembly 400 are evenly distributed in the square.

[0046] The excitation coil assembly 200 is wound by enameled wire according to a space filling curve, and the coil fills the entire slotted area of ​​the excitation core 100. Direct current passes through the coil, which can generate a constant magnetic field between the gaps of the magnetic pole plate 300. It is wound by enameled wire.

[0047] The driving coil assembly 400 includes a driving coil 401 and a coil gasket 402. The driving coil 401 is made of conductive metal strips stacked along a space-filling curve, and the ends are connected in sequence to form a multi-turn series spiral driving coil along the space-filling curve. An opening is formed on the driving coil 401, and a protrusion along the space-filling curve is formed on the bottom surface of the vibration table 500. The vibration table 500 and the driving coil 401 are fastened and connected by bolts.

[0048] Preferably, the driving coil 401 is made of a copper plate by wire cutting, and its direction is the same as that of the excitation coil 200, and a copper strip with a width is formed along the space filling curve. Multiple layers of copper strips are stacked, and multiple copper strips are connected in series at their end faces by connectors. Under the action of the electromagnetic field, vibration excitation is provided for the vibration table 500 and the device to be tested.

[0049] The conductors of the excitation coil 200 and the driving coil 401 are parallel at all places. Direct current flows through the excitation coil 200 and alternating current flows through the driving coil 401. The driving coil 401 will be subjected to a vertical alternating electromagnetic force.

[0050] The slit on the magnetic pole plate 300 is wider than the driving coil 401 . The driving coil 401 can move up and down in the slit of the magnetic pole plate 300 , thereby driving the vibration table 500 to vibrate.

[0051] The excitation core 100 is fastened to the pole plate 300 by bolts, and the excitation core 100 is provided with lead-out slots for leading out the first and last ends of the coil. The excitation core 100 is made of a square soft magnetic material, and grooves are cut on its surface according to a space filling curve, and the excitation coil 200 can be placed inside. The pole plate 300 is made of the same soft magnetic material as the excitation core 100, and a gap is obtained by wire cutting according to the same space filling curve, and its gap width is slightly narrower than the width of the excitation coil 200. The pole plate 300 and the excitation core 100 are fastened by bolts to avoid the appearance of air gaps as much as possible and improve the magnetic induction intensity.

[0052] The vibration table 500 is a hollow structure or has internal reinforcement ribs. The natural frequency can be increased by adding reinforcement ribs, or its mass can be reduced by hollowing out. The vibration table 500 eliminates the rib plate structure and coil structure of the traditional vibration table dynamic coil, retains only the table structure, and fixes the drive coil assembly 400 to the bottom of the vibration table.

[0053] The elastic support and limit assembly 600 includes a fixed bracket 601 and two parallel spring steel sheets 602. The main function of the spring steel sheet 602 is to restrict the lateral movement of the vibration table 500, so as to ensure that the driving coil 401 does not collide with the vibration table excitation system during the vibration of the vibration table 500, so the lateral stiffness of the spring steel sheet 602 should be as high as possible. The two spring steel sheets 602 are respectively fastened to the upper and lower surfaces of the vibration table 500, and the lower part of the fixed bracket 601 is fastened to the side of the excitation core 100 by bolts. The vibration table includes 8 elastic support and limit assemblies, which are distributed on the 4 sides of the vibration table 500. The upper and lower surfaces of the square vibration table 500 have a total of 8 edges. Two spring steel sheets 602 are connected to each edge, and their lateral stiffness is much greater than the vertical stiffness, so as to limit the two lateral displacements of the vibration table 500 and the rotation around three axes, so as to ensure that the vibration table 500 only vibrates vertically.

[0054] The technical principles of this application are as follows:

[0055] Two wires are placed in the same direction. If currents flow in opposite directions through them, the two wires will repel each other. If currents flow in the same direction, the two wires will attract each other. If the current in one wire is fixed and alternating current flows through the other wire, the wire will be stimulated by the force in the plane of the wire and vibrate. Based on this principle, the driving coil and excitation coil of the vibration table are designed as two parallel wires, which can drive the vibration table surface to vibrate. Figure 4 As shown, in the present invention, magnetic steel is added around the excitation coil, and the function of the magnetic pole plate is to improve the uniformity of the magnetic field.

[0056] For the excitation coil current i1, the number of excitation coil turns is N1, if the width of the magnetic pole plate gap is d, the drive coil current is i2, the number of drive coil turns is N2, the vacuum magnetic permeability is μ0, and the coil length is L, the magnetic induction intensity of the generated magnetic field is approximately:

[0057]

[0058] The electromagnetic force on the driving coil is:

[0059] F=N2BLi2

[0060] In order to increase the thrust of the vibration table, the length of the wire in the coil should be increased as much as possible. At the same time, in order to avoid the plate shell bending of the vibration table 500, the excitation force of the vibration table should be evenly distributed on the surface of the vibration table 500.

[0061] This application further describes the third-order Moore curve as an example. Figure 1As shown. The vibration system includes an excitation core 100, an excitation coil 200, a magnetic pole plate 300, a drive coil assembly 400, a vibration table 500, an elastic support limit assembly 600, etc. The grooves of the excitation coil 200, the drive coil 401 and the excitation core 100 form a loop structure along the space filling curve, and the vibration table moving coil eliminates the rib plate structure and the coil structure and only includes a square vibration table 500. The side of the square vibration table 500 is connected to the limited displacement bracket to constrain its lateral vibration.

[0062] The excitation core 100 is made by milling a square soft magnetic material. The grooves are milled from the square soft magnetic material on a milling machine according to the third-order Moore curve. The main purpose of the excitation core 100 is to constrain the direction of the magnetic flux lines and increase the magnetic induction intensity. The excitation core 100 has small grooves for leading out the ends of the coil.

[0063] The pole plate 300 is milled from a square soft magnetic material, and its thickness is less than that of the excitation coil 200. Compared with the width of the groove of the excitation core 100, the width of the slot of the pole plate 300 is slightly narrower, and its main purpose is to increase the uniformity and magnetic induction intensity of the magnetic field within the working stroke of the vibration table.

[0064] The excitation coil 200 is made of enameled wire. The wire is wound into a coil along the same space filling curve as the excitation core 100 and inserted into the groove of the excitation core 100. When direct current passes through the coil, a magnetic field will be formed between the gaps of the magnetic pole plates 300. The current directions of two adjacent wires are often opposite, ensuring that the magnetic field directions between the two wires are the same. The wire of the drive coil assembly 400 will be subjected to a vertical excitation force in the magnetic field.

[0065] The driving coil 401 is formed by stacking a plurality of copper bars. The copper bars are cut from a copper plate according to a space filling curve. The plurality of copper bars are stacked on top of each other, and the ends are connected in sequence, and an insulating coating is applied between the copper bars. The driving coil 401 can move up and down freely in the groove between the excitation core 100 and the pole plate 300. Holes are distributed on the copper bars of the excitation coil 200, which can be fixed to the coil gasket 402 and the square vibration table 500 by bolts. In order to ensure that there is no short circuit between the copper bars, a heat shrink tube is provided on the inner wall of the hole to ensure insulation between the coil wire and the bolt.

[0066] The vibration table 500 is made of a square plate, which can be made of non-ferromagnetic materials such as carbon fiber or aluminum alloy. The bottom of the vibration table 500 has a protrusion along the space filling curve to ensure that the drive coil 401 extends into the magnetic field. The bottom of the vibration table 500 and the drive coil 401 are fixed by bolts.

[0067] The lower part of the fixed bracket 601 of the elastic support and limit assembly 600 is connected to the side of the excitation core 100 by bolts, and the upper part is connected to the vibration table 500 by a spring steel sheet 602, which is used to restrict the lateral vibration of the vibration table 500. The entire vibration system includes 8 groups of elastic support and limit assemblies 600, which are evenly distributed on the four sides of the square vibration table 500.

[0068] The present application significantly reduces the height of the vibration table dynamic coil. Compared with the traditional vibration table dynamic coil, the vibration table 500 of the present application deletes the coil structure and the rib plate structure, and only retains the table structure. The coil is directly fixed to the vibration table, which greatly reduces the mass of the vibration table dynamic coil and improves the effective thrust of the vibration table. At the same time, the longitudinal natural frequency of the vibration table 500 is greatly improved. Compared with the traditional vibration table dynamic coil, the first-order longitudinal natural frequency of the vibration table body of the present application can be increased by 10 times, thereby significantly improving the operating frequency of the vibration table.

[0069] Compared with the coil arrangement method that generates driving force through a ring coil, since the filling curve covers the entire table top, it can ensure that the electromagnetic force applied to the table top is evenly distributed, avoid exciting the plate and shell bending modal deformation of the table top substructure, improve the table top uniformity during high-frequency vibration, and ensure high fidelity during table top vibration.

[0070] The present application can significantly reduce the mass of the vibration table surface, increase the first-order axial natural frequency of the vibration table surface 500, and because the electromagnetic excitation force on the vibration table surface 500 is evenly distributed on the surface, bending and deformation of the surface of the vibration table surface 500 can be effectively avoided.

[0071] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0072] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A high-frequency electromagnetic vibration table with coil design based on space filling curve, characterized in that: include: An excitation core (100), an excitation coil (200), a magnetic pole plate (300), a driving coil assembly (400) and a vibration table (500), wherein the excitation core (100), the magnetic pole plate (300) and the vibration table (500) are arranged in sequence from bottom to top, and a plurality of elastic support and limiting assemblies (600) are evenly and firmly connected to the circumference of the vibration table (500); The excitation coil (200) and the drive coil assembly (400) are of the same shape and are arranged correspondingly. Both are wound along a space-filling curve to form a loop structure. The excitation core (100) and the magnetic pole plate (300) are provided with matching grooves or gaps in their interiors. The excitation coil (200) is installed in the groove of the excitation core (100), and the drive coil assembly (400) is installed at the bottom of the vibration table (500) and is capable of moving up and down in the gap of the magnetic pole plate (300).

2. The high-frequency electromagnetic vibration table for coil design based on space filling curve according to claim 1, characterized in that: The space filling curves include Moore curves, Hilbert curves, square spiral curves, multi-ring curves, Smalehorse shoe curves, fishbone curves, and S-shaped curves; the excitation core (100), the magnetic pole plate (300), and the vibration table (500) are all square; and the excitation coil (200) and the drive coil assembly (400) are evenly distributed in the square.

3. The high-frequency electromagnetic vibration table for coil design based on space filling curve according to claim 1, characterized in that: The excitation coil assembly (200) is formed by winding enameled wire along the space filling curve.

4. The high-frequency electromagnetic vibration table for coil design based on space filling curves according to claim 1, characterized in that: The driving coil assembly (400) comprises a driving coil (401) and a coil gasket (402); the driving coil (401) is made of multiple layers of copper bars, which are connected end to end in sequence to form a multi-turn series spiral driving coil along the space filling curve.

5. The high-frequency electromagnetic vibration table for coil design based on space filling curves as claimed in claim 4, characterized in that: The driving coil (401) is provided with an opening, the bottom surface of the vibration table (500) is formed with a protrusion along a space-filling curve, and the vibration table (500) and the driving coil (401) are fastened and connected by screws.

6. The high-frequency electromagnetic vibration table for coil design based on space filling curves as claimed in claim 4, characterized in that: The conductors of the excitation coil (200) and the drive coil (401) are parallel at all places; direct current flows through the excitation coil (200) and alternating current flows through the drive coil (401).

7. The high-frequency electromagnetic vibration table for coil design based on space filling curves as claimed in claim 4, characterized in that: The gap on the magnetic pole plate (300) is wider than the driving coil (401), and the driving coil (401) can move up and down between the gaps of the magnetic pole plate (300).

8. The high-frequency electromagnetic vibration table for coil design based on space filling curves as claimed in claim 1, characterized in that: The slot width of the magnetic pole plate (300) is smaller than the slot width of the excitation core (100); the excitation core (100) and the magnetic pole plate (300) are fastened together by bolts; and the excitation core (100) is provided with lead-out slots for leading out the first and last ends of the coil.

9. The high-frequency electromagnetic vibration table for coil design based on space filling curves as claimed in claim 1, characterized in that: The vibration table top (500) is a hollow structure or has reinforcing ribs arranged inside.

10. The high-frequency electromagnetic vibration table for coil design based on space filling curves according to claim 1, characterized in that: The elastic support limit assembly (600) comprises a fixed bracket (601) and two spring steel sheets (602) arranged in parallel, the two spring steel sheets (602) are respectively fastened to the upper and lower surfaces of the vibration table (500), and the lower part of the fixed bracket (601) is fastened to the side of the excitation core (100) by bolts.

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