Suspended vibration table and control method

Abstract

The present invention provides a suspension vibration table and a control method, wherein the suspension vibration table comprises: a base; at least two vibrators fixedly connected to the upper surface of the base, uniformly distributed on the upper surface of the base; a magnetic levitation column fixedly connected to the upper surface of the base, placed at the center of the at least two vibrators; a cover plate; a control circuit board fixedly connected to the lower surface of the base, electrically connected to the at least two vibrators and the magnetic levitation column through the base; wherein the magnetic levitation column, the at least two vibrators and the cover plate are all provided with magnetic components, the control circuit board transmits current to the magnetic levitation column and the at least two vibrators, a magnetic field is generated between the magnetic components on the magnetic levitation column and the at least two vibrators and the magnetic components on the cover plate, the cover plate is suspended above the magnetic levitation column and the at least two vibrators at a preset distance under the action of the magnetic field, and the cover plate is controlled to vibrate with the change of the magnetic field intensity. The scheme of the present invention can reduce the working noise of the suspension vibration table and improve the accuracy of vibration control.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration platforms, and in particular to a suspension vibration platform and a control method thereof. Background Art

[0002] For electronic components and mechanical parts, whether in the manufacturing process, assembly, transportation, or use, vibration will cause their performance to degrade or even fail, resulting in safety accidents. Therefore, it is necessary to use a vibration table to carry out vibration tests to detect the extreme conditions that the product can withstand, expose the defects in the design, and show the weak links in the design, so as to improve the design of the product, overcome the defects and deficiencies in the design, so that the product can achieve the expected performance and service life, and prevent and avoid the occurrence of safety accidents. The vibration table can simulate the various environments encountered by the product during the manufacturing, assembly, transportation, and use execution stages, and is used to identify whether the product can adapt to environmental vibration. It is suitable for research, development, quality control, and manufacturing in various industries such as electronics, electromechanics, optoelectronics, automobiles, and toys. However, the existing vibration tables have problems such as high working noise and inaccurate control. Summary of the invention

[0003] In order to solve the above technical problems, an example of the present invention provides a suspension vibration table and a control method, which can reduce the working noise of the suspension vibration table and improve the accuracy of vibration control.

[0004] The technical solution of the present invention is as follows:

[0005] A suspension vibration table, comprising:

[0006] Base;

[0007] At least two vibrators fixedly connected to the upper surface of the base, wherein the at least two vibrators are evenly distributed on the upper surface of the base;

[0008] A magnetic levitation column fixedly connected to the upper surface of the base, wherein the magnetic levitation column is placed at the center of the at least two vibrators;

[0009] Cover plate;

[0010] A control circuit board fixedly connected to the lower surface of the base, wherein the control circuit board is electrically connected to the at least two vibrators and the magnetic levitation column through the base;

[0011] Among them, magnetic components are provided on the magnetic levitation column, at least two vibrators and the cover plate, and the control circuit board transmits current to the magnetic levitation column and the at least two vibrators, and a magnetic field is generated between the magnetic components on the magnetic levitation column and the at least two vibrators and the magnetic components on the cover plate. Under the action of the magnetic field, the cover plate is suspended above the magnetic levitation column and the at least two vibrators at a preset distance, and the cover plate is controlled to vibrate as the intensity of the magnetic field changes.

[0012] Optionally, the magnetic levitation column includes:

[0013] A first magnetic bar, wherein a first coil is wound around an outer surface of the first magnetic bar;

[0014] A second coil fixedly connected to the top end of the first magnetic bar;

[0015] Wherein, the first coil and the second coil are electrically connected to the control circuit board through the base.

[0016] Optionally, the cover plate includes:

[0017] A cover body having an accommodating space;

[0018] A fourth coil is fixedly disposed on the lower surface of the cover;

[0019] The fourth coil is arranged corresponding to the second coil, and the second coil provides electrical energy to the fourth coil after being energized.

[0020] Optionally, the at least two vibrators include: a first vibrator, a second vibrator, a third vibrator and a fourth vibrator uniformly distributed on the upper surface of the base, and the magnetic levitation column is placed at the center of the first vibrator, the second vibrator, the third vibrator and the fourth vibrator.

[0021] Optionally, the first vibrator, the second vibrator, the third vibrator and the fourth vibrator all include:

[0022] A first magnetic conductive shell fixedly connected to the upper surface of the base;

[0023] A second magnetic bar disposed in the first magnetic conductive shell;

[0024] A third coil is wound around the outer surface of the second magnetic bar;

[0025] The top of the first magnetic conductive shell is provided with first magnetic conductive teeth and first magnetic conductive grooves which are arranged at intervals;

[0026] The third coil is electrically connected to the control circuit board through the base.

[0027] Optionally, the cover plate further includes:

[0028] At least two magnetic conductive legs fixedly arranged on the lower surface of the cover body;

[0029] The at least two magnetic conductive legs are arranged in one-to-one correspondence with the at least two vibrators.

[0030] Optionally, the at least two magnetic conductive legs each include:

[0031] A second magnetic conductive shell fixed to the lower surface of the cover;

[0032] a permanent magnet disposed in the second magnetically conductive shell;

[0033] Wherein, a second magnetic conductive tooth and a second magnetic conductive groove are arranged at intervals at the end of the second magnetic conductive shell facing the first magnetic conductive shell;

[0034] The second magnetic conductive teeth are arranged correspondingly to the first magnetic conductive teeth, and the second magnetic conductive grooves are arranged correspondingly to the first magnetic conductive grooves;

[0035] The permanent magnet and the second magnetic bar are arranged opposite to each other;

[0036] When the third coils on the outer surfaces of the second magnetic bars of the first vibrator, the second vibrator, the third vibrator and the fourth vibrator are energized, a magnetic field is generated between the permanent magnet and the second magnetic bar.

[0037] Optionally, the control circuit board includes:

[0038] Micro control unit;

[0039] A power control circuit electrically connected to the micro control unit;

[0040] A current collection circuit electrically connected to the micro control unit and the power control circuit;

[0041] Wherein, the power control circuit is electrically connected to the first vibrator, the second vibrator, the third vibrator, the fourth vibrator and the magnetic levitation column respectively;

[0042] The current collection circuit collects the currents respectively output by the power control circuit to the first vibrator, the second vibrator, the third vibrator, the fourth vibrator and the magnetic levitation column;

[0043] The micro control unit controls the power control circuit to transmit corresponding target currents to the first vibrator, the second vibrator, the third vibrator, the fourth vibrator and the magnetic levitation column respectively according to the current, so that a target magnetic field is generated between the magnetic components on the magnetic levitation column and the at least two vibrators and the magnetic components on the cover plate.

[0044] Optionally, the power control circuit includes:

[0045] Potentiometer;

[0046] a capacitor electrically connected to the potentiometer;

[0047] A bidirectional trigger diode electrically connected to the capacitor and the potentiometer;

[0048] A bidirectional thyristor electrically connected to the bidirectional trigger diode;

[0049] Among them, according to the charging voltage on the capacitor and the breakover voltage of the bidirectional trigger diode, the bidirectional trigger diode is controlled to discharge to the control electrode of the bidirectional thyristor, triggering the bidirectional thyristor to turn on, and according to the changing resistance value of the potentiometer, the corresponding current is output to the first vibrator, the second vibrator, the third vibrator, the fourth vibrator and the magnetic levitation column.

[0050] An embodiment of the present invention further provides a control method for a suspension vibration table, which is applied to the suspension vibration table described in the above solution, and the method includes:

[0051] By controlling the current collection circuit of the circuit board, the power control circuit collects and outputs the coil currents of at least two vibrators and the magnetic levitation column respectively;

[0052] Determining the magnetic field strength between the at least two vibrators and the cover plate and between the magnetic levitation column and the cover plate according to the coil current;

[0053] According to the magnetic field strength, the power control circuit is controlled to output corresponding target currents to the at least two vibrators and the magnetic levitation column respectively, so that a target magnetic field is generated between the magnetic components on the magnetic levitation column and the at least two vibrators and the magnetic components on the cover plate. Under the action of the target magnetic field, the cover plate is suspended at a preset distance above the magnetic levitation column and the at least two vibrators.

[0054] The above solution of the present invention includes at least the following beneficial effects:

[0055] The above scheme of the present invention is provided with a base; at least two vibrators fixedly connected to the upper surface of the base, the at least two vibrators are evenly distributed on the upper surface of the base; a magnetic levitation column fixedly connected to the upper surface of the base, the magnetic levitation column is placed at the center of the at least two vibrators; a cover plate; a control circuit board fixedly connected to the lower surface of the base, the control circuit board is electrically connected to the at least two vibrators and the magnetic levitation column through the base; wherein the magnetic levitation column, the at least two vibrators and the cover plate are all provided with magnetic components, the control circuit board transmits current to the magnetic levitation column and the at least two vibrators, a magnetic field is generated between the magnetic components on the magnetic levitation column and the at least two vibrators and the magnetic components on the cover plate, under the action of the magnetic field, the cover plate is suspended above the magnetic levitation column and the at least two vibrators by a preset distance, and the cover plate is controlled to vibrate with the change of the magnetic field strength. It can reduce the working noise of the suspension vibration table and improve the accuracy of vibration control. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 is a schematic plan view of the suspended vibration platform of the present invention;

[0057] Figure 2 is a bottom view schematic diagram of the suspension vibration table of the present invention;

[0058] Figure 3 is a schematic top view of the suspended vibration table of the present invention;

[0059] Figure 4 It is a schematic diagram of the magnetic levitation column of the suspension vibration platform of the present invention;

[0060] Figure 5 It is a schematic diagram of the outer side of the magnetic legs of the vibrator and the cover plate of the suspension vibration table of the present invention;

[0061] Figure 6 It is a schematic diagram of the inner side of the magnetic legs of the vibrator and the cover plate of the suspension vibration table of the present invention;

[0062] Figure 7 is a schematic diagram of a control circuit board of the suspension vibration platform of the present invention;

[0063] Figure 8 It is a schematic diagram of a power control circuit of a control circuit board of a suspension vibration platform of the present invention.

[0064] Description of reference numerals:

[0065] 1-base; 2-magnetic levitation column; 21-first magnetic rod; 22-first coil; 23-second coil; 31-first vibrator; 32-second vibrator; 33-third vibrator; 34-fourth vibrator; 311-first magnetic shell; 321-second magnetic rod; 331-third coil; 341-first magnetic tooth; 351-first magnetic groove; 4-cover; 41-cover body; 42-fourth coil; 43-magnetic leg; 431-second magnetic shell; 432-permanent magnet; 433-second magnetic tooth; 434-second magnetic groove; 5-control circuit board. DETAILED DESCRIPTION

[0066] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0067] like Figure 1 As shown, an embodiment of the present invention provides a suspension vibration table, comprising:

[0068] Base 1;

[0069] At least two vibrators fixedly connected to the upper surface of the base 1, wherein the at least two vibrators are evenly distributed on the upper surface of the base 1;

[0070] A magnetic levitation column 2 fixedly connected to the upper surface of the base 1, wherein the magnetic levitation column 2 is placed at the center of the at least two vibrators;

[0071] Cover plate 4;

[0072] A control circuit board 5 fixedly connected to the lower surface of the base 1, wherein the control circuit board 5 is electrically connected to the at least two vibrators and the magnetic levitation column 2 through the base 1;

[0073] Among them, magnetic components are provided on the magnetic levitation column 2, at least two vibrators and the cover plate 4, and the control circuit board 5 transmits current to the magnetic levitation column 2 and the at least two vibrators. A magnetic field is generated between the magnetic components on the magnetic levitation column 2 and the at least two vibrators and the magnetic components on the cover plate 4. Under the action of the magnetic field, the cover plate 4 is suspended above the magnetic levitation column 2 and the at least two vibrators at a preset distance, and the cover plate 4 is controlled to vibrate as the intensity of the magnetic field changes.

[0074] In this embodiment, Figure 1 , Figure 2 , Figure 3As shown, the magnetic levitation column 2 and the at least two vibrators and the cover plate 4 are all provided with magnetic components, which can generate a magnetic field. The cover plate 4 relies on the magnetic field force to suspend a preset distance above the magnetic levitation column 2 and the at least two vibrators. According to the magnitude of the current output by the control circuit, the magnetic field force generated by the magnetic component can produce strength changes, and the preset distance can be changed according to the strength of the magnetic force. The magnetic component is a permanent magnet or an electromagnet. In this embodiment, the magnetic component of the cover plate 4 is a permanent magnet, and the magnetic components of the magnetic levitation column 2 and the at least two vibrators are electromagnets. A control circuit board 5 is used to supply the electromagnet. The control circuit board 5 transmits current to the electromagnet to adjust the posture of the cover plate 4. After the electromagnet is energized, the strength of the electromagnetic field can be changed according to the change of the power supply current of the electromagnet, thereby controlling the cover plate 4 to vibrate with the change of the magnetic field strength. During the vibration process, the cover plate 4 is always in a suspended state and has no contact with other mechanical parts, so that the suspended vibration table can be precisely controlled and the working noise can be reduced at the same time. When the electromagnet is powered off, the cover plate 4 can rely on the permanent magnet to be adsorbed on the magnetic levitation column 2 and at least two vibrators, so that the suspended vibration table forms a whole, which is convenient for storage and movement.

[0075] like Figure 4 As shown, in an optional embodiment of the present invention, the magnetic levitation column 2 includes:

[0076] A first magnetic bar 21, wherein a first coil 22 is wound around the outer surface of the first magnetic bar 21;

[0077] A second coil 23 fixedly connected to the top of the first magnetic bar 21;

[0078] The first coil 22 and the second coil 23 are electrically connected to the control circuit board 5 through the base 1 .

[0079] In this embodiment, Figure 4 As shown, the first magnetic rod 21 is a soft magnet made of soft magnetic material. The soft magnetic material is a magnetic material with low coercive force and high magnetic permeability. The soft magnetic material is easy to magnetize and also easy to demagnetize. The first coil 22 is wound around the outer surface of the first magnetic rod 21. After the control circuit board 5 supplies power to the first coil 22, it can generate a magnetic field and control the strength of the magnetic field by changing the magnitude of the power supply current. The magnetic levitation column 2 mainly provides a suspension support force for the cover plate 4 through the magnetic field, so that the cover plate 4 is in a suspended state and does not come into contact with other mechanical parts. The second coil 23 is located at the top of the first magnetic rod 21. When powered on, it can provide electrical energy to the cover plate 4 wirelessly to meet the power demand of the cover plate 4.

[0080] like Figure 4 As shown, in an optional embodiment of the present invention, the cover plate 4 includes:

[0081] A cover body 41 having an accommodating space;

[0082] A fourth coil 42 is fixedly disposed on the lower surface of the cover body 41;

[0083] The fourth coil 42 is arranged corresponding to the second coil 23 , and the second coil 23 provides electrical energy to the fourth coil 42 after being energized.

[0084] In this embodiment, Figure 3 , Figure 4 As shown, the accommodating space of the cover body 41 provides a working platform for the suspended vibration table; the fourth coil 42 is located on the lower surface of the cover body 41, and is arranged corresponding to the second coil 23. The second coil 23 is electrically connected to the control circuit board 5. The second coil 23 can transfer electric energy to the fourth coil 42 wirelessly, thereby providing the required electric energy for the cover body 41.

[0085] like Figure 1 , Figure 2 As shown, in an optional embodiment of the present invention, the at least two vibrators include: a first vibrator 31, a second vibrator 32, a third vibrator 33 and a fourth vibrator 34 uniformly distributed on the upper surface of the base 1, and the magnetic levitation column 2 is placed at the center of the first vibrator 31, the second vibrator 32, the third vibrator 33 and the fourth vibrator 34.

[0086] In this embodiment, Figure 1 , Figure 2 As shown, the first vibrator 31, the second vibrator 32, the third vibrator 33 and the fourth vibrator 34 are evenly distributed at the four vertex positions of the base 1, so as to form a balanced support for the cover plate 4 and be able to vibrate in multiple directions; the magnetic levitation column 2 is located at the center of the four vibrators, and can provide a supporting force for the center position of the cover plate 4, and support the vibration of the cover plate 4 in multiple directions.

[0087] like Figure 5 As shown, in an optional embodiment of the present invention, the first vibrator 31, the second vibrator 32, the third vibrator 33 and the fourth vibrator 34 all include:

[0088] A first magnetic conductive shell 311 fixedly connected to the upper surface of the base 1;

[0089] A second magnetic rod 321 disposed in the first magnetic conductive shell 311;

[0090] A third coil 331 is wound around the outer surface of the second magnetic bar 321;

[0091] The top of the first magnetic conductive shell 311 has first magnetic conductive teeth 341 and first magnetic conductive grooves 351 arranged at intervals;

[0092] The third coil 331 is electrically connected to the control circuit board 5 through the base 1 .

[0093] In this embodiment, Figure 5 , Figure 6 As shown, the first vibrator 31, the second vibrator 32, the third vibrator 33 and the fourth vibrator 34 have the same structure, the first magnetic shell 311 and the second magnetic bar 321 are both soft magnets made of soft magnetic materials, and the soft magnetic material is a magnetic material with low coercive force and high magnetic permeability. The soft magnetic material is easy to magnetize and also easy to demagnetize. The first magnetic shell 311 and the second magnetic bar 321 can increase the electromagnetic field strength;

[0094] At least one first magnetic conductive tooth 341 is arranged at intervals on the top of the first magnetic conductive shell 311, and a first magnetic conductive groove 351 is arranged between adjacent first magnetic conductive teeth 341. The first magnetic conductive shell 311 and the second magnetic rod 321 can fix the circumferential position of the cover plate 4 through the force of the magnetic field to prevent the cover plate 4 from circumferentially rotating during the vibration process, and can also provide a force for the vibration of the cover plate 4;

[0095] The third coil 331 is electrically connected to the control circuit board 5 through the base 1. When the third coil 331 is energized, it can generate a magnetic field, so that the first magnetic shell 311 and the second magnetic rod 321 both generate magnetism, thereby generating an electromagnetic field force. Through the change of the electromagnetic field force, the cover plate 4 can be driven to vibrate.

[0096] In an optional embodiment of the present invention, the cover plate 4 further includes:

[0097] At least two magnetic conductive legs 43 fixedly disposed on the lower surface of the cover body 41;

[0098] The at least two magnetic conductive legs 43 are arranged in one-to-one correspondence with the at least two vibrators, that is, one magnetic conductive leg corresponds to one vibrator.

[0099] In this embodiment, Figure 4 , Figure 5 As shown, the accommodating space of the cover body 41 provides a vibration platform, and the at least two magnetic conductive legs 43 are arranged in a one-to-one correspondence with the at least two vibrators, and can interact with the at least two vibrators to jointly fix the circumferential position of the cover plate 4 to prevent the cover plate 4 from circumferential rotation during vibration, and can also provide a force for the vibration of the cover plate 4.

[0100] like Figure 5 As shown, in an optional embodiment of the present invention, the at least two magnetic conductive legs 43 each include:

[0101] A second magnetic conductive shell 431 fixed to the lower surface of the cover body 41;

[0102] A permanent magnet 432 disposed in the second magnetic conductive shell 431;

[0103] The second magnetic conductive shell 431 is provided with a second magnetic conductive tooth 433 and a second magnetic conductive groove 434 at an end thereof facing the first magnetic conductive shell 311;

[0104] The second magnetic conductive teeth 433 are arranged correspondingly to the first magnetic conductive teeth 341 , and the second magnetic conductive grooves 434 are arranged correspondingly to the first magnetic conductive grooves 351 ;

[0105] The permanent magnet 432 is arranged opposite to the second magnetic bar 321;

[0106] When the third coils 331 on the outer surfaces of the second magnetic bars 321 of the first vibrator 31 , the second vibrator 32 , the third vibrator 33 and the fourth vibrator 34 are energized, a magnetic field is generated between the permanent magnet 432 and the second magnetic bars 321 .

[0107] In this embodiment, Figure 5 , Figure 6 As shown, the at least two magnetic legs 43 each include a permanent magnet 432, and the second magnetic teeth 433 and the second magnetic groove 434 are spaced apart at the end of the second magnetic shell 431 facing the first magnetic shell 311, the second magnetic teeth 433 are arranged corresponding to the first magnetic teeth 341, and the second magnetic groove 434 is arranged corresponding to the first magnetic groove 351; the permanent magnet 432 is arranged opposite to the second magnetic rod 321; the third coil 331 generates a magnetic field after being energized, the magnetic teeth are opposite to the magnetic teeth, and the magnetic grooves are opposite to the magnetic grooves, which jointly fix the circumferential position of the cover plate 4 to prevent the cover plate 4 from circumferential rotation during vibration, and can also provide a force for the vibration of the cover plate 4.

[0108] like Figure 7 As shown, in an optional embodiment of the present invention, the control circuit board 5 includes:

[0109] Microcontroller unit MCU;

[0110] A power control circuit electrically connected to the micro control unit MCU;

[0111] A current collection circuit electrically connected to the micro control unit and the power control circuit;

[0112] The power control circuit is electrically connected to the first vibrator 31, the second vibrator 32, the third vibrator 33, the fourth vibrator 34 and the magnetic levitation column 2 respectively;

[0113] The current acquisition circuit acquires the current, and the power control circuit outputs the current to the first vibrator 31, the second vibrator 32, the third vibrator 33, the fourth vibrator 34 and the magnetic levitation column 2 respectively;

[0114] The microcontroller unit MCU controls the power control circuit to transmit corresponding target currents to the first vibrator 31, the second vibrator 32, the third vibrator 33, the fourth vibrator 34 and the magnetic levitation column 2 respectively according to the current, so that a target magnetic field is generated between the magnetic components on the magnetic levitation column 2 and the at least two vibrators and the magnetic components on the cover plate 4. Under the action of the target magnetic field, the cover plate 4 is suspended above the first vibrator 31, the second vibrator 32, the third vibrator 33, the fourth vibrator 34 and the magnetic levitation column 2, and can generate vibrations of a preset frequency.

[0115] In this embodiment, Figure 7 As shown, the control circuit board 5 provides electrical energy to the first vibrator 31, the second vibrator 32, the third vibrator 33, the fourth vibrator 34 and the magnetic levitation column 2, and changes the intensity of the target magnetic field between the magnetic components on the magnetic levitation column 2 and the at least two vibrators and the magnetic components on the cover plate 4 by outputting different currents to the first vibrator 31, the second vibrator 32, the third vibrator 33, the fourth vibrator 34 and the magnetic levitation column 2, thereby causing the cover plate 4 to produce different vibration effects.

[0116] like Figure 8 As shown, in an optional embodiment of the present invention, the power control circuit includes:

[0117] A potentiometer RP, wherein the potentiometer RP is electrically connected to a power supply via a resistor R and a load;

[0118] A capacitor C electrically connected to the potentiometer RP;

[0119] A bidirectional trigger diode VD electrically connected to the capacitor C and the potentiometer RP;

[0120] A bidirectional thyristor T electrically connected to the bidirectional trigger diode VD;

[0121] Among them, according to the charging voltage on the capacitor C and the breakover voltage of the bidirectional trigger diode VD, the bidirectional trigger diode VD is controlled to discharge to the control electrode of the bidirectional thyristor T, triggering the bidirectional thyristor T to turn on, and according to the changing resistance value of the potentiometer RP, the corresponding current is output to the first oscillator 31, the second oscillator 32, the third oscillator 33, the fourth oscillator 34 and the magnetic levitation column 2.

[0122] In this embodiment, Figure 8As shown, when the circuit is turned on, the power supply charges the capacitor C through the resistor R and the potentiometer RP. When the charging voltage on the capacitor C is higher than the turning voltage of the bidirectional trigger diode VD, the capacitor C discharges to the control electrode of the bidirectional thyristor T through the bidirectional trigger diode VD, triggering the bidirectional thyristor T to turn on. Changing the resistance value of the potentiometer RP can change the speed of charging to C, thereby changing the conduction angle of the bidirectional thyristor T, and then changing the current value passing through the load, so as to achieve the purpose of continuously adjusting the electromagnetic field force. The load is the first vibrator 31, the second vibrator 32, the third vibrator 33, the fourth vibrator 34 or the magnetic levitation column 2. Each load corresponds to a branch of the power control circuit. Figure 8 It is a branch of the power control circuit, and each branch has the same structure. This embodiment needs to power five components, namely, the first vibrator 31, the second vibrator 32, the third vibrator 33, the fourth vibrator 34 and the magnetic levitation column 2, and the power control circuit requires five corresponding branches.

[0123] The suspension vibration table of the present invention is composed of a cover plate, a suspension column, a first vibrator, a second vibrator, a third vibrator, a fourth vibrator, a base, and a control circuit board. A permanent magnet is installed at the bottom center of the cover plate. The bottoms of the four corners of the cover plate are fixed to the upper magnetic shells of the four vibrators. The lower magnetic shells of the four vibrators are respectively fixed above the four corners of the base. The four vibrators have the same structure, the upper magnetic shell contains a permanent magnet, the lower magnetic shell contains a soft magnetic rod, and the coil is wound around the soft magnetic rod. The upper magnetic shell and the lower magnetic shell have tooth structures, and the teeth are opposite to the teeth and the grooves are opposite to the grooves. The suspension column can be composed of a conductive coil wound around a soft magnetic material, or it can be composed of a permanent magnet. The vibrator conductive coil and the suspension column conductive coil are both connected to the control circuit board under the base, and the control circuit board can collect the position information of the cover plate and provide a control current to each conductive coil.

[0124] The main advantages of the present invention are: 1. The cover plate is in a suspended state and will not contact other parts or collide to cause vibration and noise. 2. The position information of the cover plate can be identified and collected by the control board; 3. According to the position information, the control circuit board transmits current to the vibrator coil or the suspension column, thereby controlling the suspension position of the cover plate; 4. The control circuit board can transmit current to each coil to make the cover plate vibrate at any frequency; 5. If the cover plate has mechanical vibration, the control circuit board can transmit current to each coil to slow down the vibration of the cover plate; 6. The control circuit board can transmit current to each coil to adjust the posture of the cover plate so that the cover plate is in a horizontal state; 7. The control circuit board can transmit current to each coil to adjust the posture of the cover plate so that the cover plate is in a state with a certain inclination angle with the horizontal plane, but the cover plate is still not in contact with other mechanical parts and is in a suspended state; 8. The cover plate can be wirelessly powered through the coil above the magnetic levitation column and the coil below the cover plate.

[0125] An embodiment of the present invention further provides a control method for a suspension vibration table, which is applied to the suspension vibration table described in the above solution, and the method comprises:

[0126] Step 91, collecting the coil currents of at least two vibrators and the magnetic levitation column 2 outputted by the power control circuit by controlling the current collection circuit of the circuit board 5;

[0127] Step 92, determining the magnetic field strength between the at least two vibrators and the cover plate 4 and between the magnetic levitation column 2 and the cover plate 4 according to the coil current;

[0128] Step 93, according to the magnetic field strength, controlling the power control circuit to output corresponding target currents to the at least two vibrators and the magnetic levitation column 2 respectively, so that a target magnetic field is generated between the magnetic components on the magnetic levitation column 2 and the at least two vibrators and the magnetic components on the cover plate 4, and under the action of the target magnetic field, the cover plate 4 is suspended at a preset distance above the magnetic levitation column 2 and the at least two vibrators.

[0129] In this embodiment, the current acquisition circuit of the control circuit board 5 is used to collect the current of the at least two vibrators and the magnetic levitation column 2, respectively. The force between the at least two vibrators and the cover plate 4, and between the magnetic levitation column 2 and the cover plate 4 are obtained according to the current. By changing the magnitude of the current, the magnitude of the magnetic field force is changed, so that the cover plate 4 produces a vibration effect.

[0130] Wherein, according to the magnetic field strength, controlling the power control circuit to output corresponding target currents to the at least two vibrators and the magnetic levitation column 2 respectively comprises: The magnetic field force is obtained, wherein F is the magnetic field force, N is the number of turns of the coil, π is a constant, x is the distance from the center of the permanent magnet to the center of the corresponding coil, μ0 is the magnetic permeability of the coil, I is the current passing through the coil, and A is the cross-sectional area of ​​the permanent magnet; the greater the current passing through the at least two vibrators and the magnetic levitation column 2, the greater the magnetic field force generated, and the higher the vibration frequency of the cover.

[0131] In the above embodiments of the present invention, the magnetic field strength is controlled by the current, and the magnetic field force is used to represent the magnetic field strength. When calculating the force generated by the electromagnetic coil on the permanent magnet, multiple factors need to be considered, including the current, number of turns, geometric shape of the electromagnetic coil, magnetic properties of the permanent magnet, and relative positions between them. When the electromagnetic coil is energized, a magnetic field is generated, and this magnetic field interacts with the magnetic field of the permanent magnet, thereby generating a force, an attractive force or a repulsive force, and the magnitude of the force depends on the interaction strength between the two magnetic fields.

[0132] The above scheme of the present invention can make the cover plate of the suspended vibration table in a suspended state, and will not contact other parts or produce collisions to cause vibration, thereby avoiding causing noise; the position information of the cover plate can be identified and collected by the control circuit board; according to the position information, the control circuit board transmits current to the vibrator coil or the suspension column, thereby controlling the suspension position of the cover plate; the control circuit board can transmit current to each coil to make the cover plate vibrate at any frequency; when necessary, if the cover plate has mechanical vibration, the control circuit board can transmit current to each coil to slow down the vibration of the cover plate; the control circuit board can transmit current to each coil to adjust the posture of the cover plate so that the cover plate is in a horizontal state; the control circuit board can transmit current to each coil to adjust the posture of the cover plate so that the cover plate is in a state with a certain inclination angle with the horizontal plane, but the cover plate is still not in contact with other mechanical parts and is in a suspended state; the cover plate can be wirelessly powered by the coil at the top of the magnetic levitation column and the coil at the bottom of the cover plate.

[0133] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A suspended vibration table, characterized in that: include: Base (1); At least two vibrators fixedly connected to the upper surface of the base (1), the at least two vibrators being evenly distributed on the upper surface of the base (1); A magnetic levitation column (2) fixedly connected to the upper surface of the base (1), the magnetic levitation column (2) being placed at the center of the at least two vibrators; Cover plate (4); a control circuit board (5) fixedly connected to the lower surface of the base (1), the control circuit board (5) being electrically connected to the at least two vibrators and the magnetic levitation column (2) respectively through the base (1); The magnetic levitation column (2), the at least two vibrators and the cover plate (4) are all provided with magnetic components, the control circuit board (5) transmits current to the magnetic levitation column (2) and the at least two vibrators, a magnetic field is generated between the magnetic components on the magnetic levitation column (2) and the at least two vibrators and the magnetic components on the cover plate (4), and under the action of the magnetic field, the cover plate (4) is suspended above the magnetic levitation column (2) and the at least two vibrators by a preset distance, and the cover plate (4) is controlled to vibrate as the intensity of the magnetic field changes; The magnetic levitation column (2) comprises: A first magnetic bar (21), wherein a first coil (22) is wound around the outer surface of the first magnetic bar (21); A second coil (23) fixedly connected to the top end of the first magnetic bar (21); Wherein, the first coil (22) and the second coil (23) are electrically connected to the control circuit board (5) through the base (1); The cover plate (4) comprises: A cover body (41) having an accommodating space; A fourth coil (42) is fixedly disposed on the lower surface of the cover body (41); Wherein, the fourth coil (42) is arranged corresponding to the second coil (23), and the second coil (23) provides electrical energy to the fourth coil (42) after being energized; The at least two vibrators include: a first vibrator (31), a second vibrator (32), a third vibrator (33) and a fourth vibrator (34) uniformly distributed on the upper surface of the base (1); the magnetic levitation column (2) is placed at the center of the first vibrator (31), the second vibrator (32), the third vibrator (33) and the fourth vibrator (34); The first vibrator (31), the second vibrator (32), the third vibrator (33) and the fourth vibrator (34) all comprise: A first magnetic conductive shell (311) fixedly connected to the upper surface of the base (1); a second magnetic bar (321) disposed in the first magnetic conductive shell (311); A third coil (331) is wound around the outer surface of the second magnetic bar (321); The top of the first magnetic conductive shell (311) is provided with first magnetic conductive teeth (341) and first magnetic conductive grooves (351) which are arranged at intervals; The third coil (331) is electrically connected to the control circuit board (5) via the base (1).

2. The suspension vibration table according to claim 1, characterized in that: The cover plate (4) further comprises: At least two magnetic conductive legs (43) fixedly arranged on the lower surface of the cover body (41); The at least two magnetic conductive legs (43) are arranged in one-to-one correspondence with the at least two vibrators.

3. The suspension vibration table according to claim 2, characterized in that: The at least two magnetic conductive legs (43) each comprise: A second magnetic conductive shell (431) fixed to the lower surface of the cover body (41); a permanent magnet (432) disposed in the second magnetic conductive shell (431); Wherein, a second magnetic conductive tooth (433) and a second magnetic conductive groove (434) are arranged at intervals on the end of the second magnetic conductive shell (431) facing the first magnetic conductive shell (311); The second magnetic conductive teeth (433) are arranged correspondingly to the first magnetic conductive teeth (341), and the second magnetic conductive grooves (434) are arranged correspondingly to the first magnetic conductive grooves (351); The permanent magnet (432) and the second magnetic bar (321) are arranged opposite to each other; When the third coil (331) on the outer surface of the second magnetic bar (321) of the first vibrator (31), the second vibrator (32), the third vibrator (33) and the fourth vibrator (34) is energized, a magnetic field is generated between the permanent magnet (432) and the second magnetic bar (321).

4. The suspension vibration table according to claim 3, characterized in that: The control circuit board (5) comprises: Micro control unit; A power control circuit electrically connected to the micro control unit; A current collection circuit electrically connected to the micro control unit and the power control circuit; The power control circuit is electrically connected to the first vibrator (31), the second vibrator (32), the third vibrator (33), the fourth vibrator (34) and the magnetic levitation column (2) respectively; The current collection circuit collects currents respectively output by the power control circuit to the first vibrator (31), the second vibrator (32), the third vibrator (33), the fourth vibrator (34) and the magnetic levitation column (2); The microcontrol unit controls the power control circuit to transmit corresponding target currents to the first vibrator (31), the second vibrator (32), the third vibrator (33), the fourth vibrator (34) and the magnetic levitation column (2) respectively according to the current, so that a target magnetic field is generated between the magnetic components on the magnetic levitation column (2) and the at least two vibrators and the magnetic components on the cover plate (4).

5. The suspension vibration table according to claim 4, characterized in that: The power control circuit comprises: Potentiometer (RP); a capacitor (C) electrically connected to the potentiometer (RP); a bidirectional trigger diode (VD) electrically connected to the capacitor (C) and the potentiometer (RP); A bidirectional thyristor (T) electrically connected to the bidirectional trigger diode (VD); According to the charging voltage on the capacitor (C) and the breakover voltage of the bidirectional trigger diode (VD), the bidirectional trigger diode (VD) is controlled to discharge to the control electrode of the bidirectional thyristor (T), triggering the bidirectional thyristor (T) to turn on, and according to the changed resistance value of the potentiometer (RP), the corresponding current is output to the first oscillator (31), the second oscillator (32), the third oscillator (33), the fourth oscillator (34) and the magnetic levitation column (2).

6. A control method for a suspended vibration table, characterized in that: Applied to the suspended vibration table according to any one of claims 4 to 5, the method comprises: By controlling the current collection circuit of the circuit board (5), the power control circuit collects the coil currents of at least two vibrators and the magnetic levitation column (2) respectively output; Determining the magnetic field strength between the at least two vibrators and the cover plate (4) and between the magnetic levitation column (2) and the cover plate (4) according to the coil current; According to the magnetic field strength, the power control circuit is controlled to output corresponding target currents to the at least two vibrators and the magnetic levitation column (2) respectively, so that a target magnetic field is generated between the magnetic components on the magnetic levitation column (2) and the at least two vibrators and the magnetic components on the cover plate (4); under the action of the target magnetic field, the cover plate (4) is suspended above the magnetic levitation column (2) and the at least two vibrators by a preset distance.

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