CN116915091A - Lateral balance type magnetic suspension device and method - Google Patents

Lateral balance type magnetic suspension device and method Download PDF

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Publication number
CN116915091A
CN116915091A CN202310623695.8A CN202310623695A CN116915091A CN 116915091 A CN116915091 A CN 116915091A CN 202310623695 A CN202310623695 A CN 202310623695A CN 116915091 A CN116915091 A CN 116915091A
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China
Prior art keywords
magnet
magnetic
suspension
magnets
levitation
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CN202310623695.8A
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Chinese (zh)
Inventor
邓舒同
邹圣楠
李诗铸
褚褚
陈建
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Quanzhou Institute of Equipment Manufacturing
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Quanzhou Institute of Equipment Manufacturing
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Priority to CN202310623695.8A priority Critical patent/CN116915091A/en
Publication of CN116915091A publication Critical patent/CN116915091A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

The lateral balance type magnetic suspension device is characterized in that a suspension magnet is arranged in a space on one side of an upright plane, a magnet assembly is arranged on the upright plane, an upper magnetic pole group attracts the suspension magnet, a lower magnetic pole group repels the suspension magnet, and a non-magnetic object is arranged below a magnetic pole close to the upright plane in the suspension magnet to balance the moment generated by the magnetic force born by the suspension magnet, so that the suspension magnet is balanced in stress and suspended, the possibility that the suspension magnet rotates in the vertical plane around the center point of the suspension magnet is greatly reduced, and the suspension stability is improved; meanwhile, the suspension assembly is suspended on the side surface of the fixed vertical plate in a balanced manner, and the upper part and the lower part of the suspension magnet are both open spaces, so that a new design basis can be provided for commercial products, and the application range of the magnetic suspension products is widened.

Description

Lateral balance type magnetic suspension device and method
Technical Field
The invention relates to the technical field of magnetic suspension, in particular to a lateral balance type magnetic suspension device and method.
Background
The magnetic suspension technology has wide application fields in the fields of semiconductor integrated circuit equipment, in-vitro centrifugal blood pumps and the like due to the characteristics of non-contact, friction-free, abrasion-free and the like. In addition, due to the interestingness and the related magnetic field, magnetic force, sensors, detection, signal processing, automatic control and other technologies, the magnetic suspension related products are also widely applied to the fields of teaching, scientific research, toys, ornamental and the like, and form a certain industrial scale, such as magnetic suspension wood grain lamps, magnetic suspension tellurions, magnetic suspension potting and the like. The existing magnetic levitation related products in the market are generally divided into two types, namely a pull-up type and a lifting type. An open space is arranged below the floater of the upward-pulling type magnetic suspension device, such as a magnetic suspension ceiling lamp, and an open space is arranged above the floater of the lifting type magnetic suspension device, such as a magnetic suspension pot plant; the design of the existing magnetic suspension application products is limited by the two magnetic suspension modes, products on the market are homogenized day by day, if new magnetic suspension structural designs can be provided and the form of an open space is changed, new design ideas can be provided for commercial products, distinctive products are provided, and the design and application range of the magnetic suspension products are widened.
Chinese patent No. CN113381642a discloses a lateral balanced magnetic levitation device and method, wherein the device makes the upper and lower sides of the float be open space, but the lateral space of the float is limited due to the need of suspending the float between two fixed vertical plates. The Chinese patent No. 114963135A discloses a lateral surrounding type suspension device and an illumination product thereof, wherein the upper part and the lower part of a floater are development spaces, a stator only exists on one side of the floater, the other side of the floater is also an open space, the form of the open space is greatly changed, but as the stator adopts an annular permanent magnet or an annular permanent magnet formed by a plurality of magnet arrays, the center of the annular permanent magnet is considered to be positioned at a horizontal plane gamma, and the magnetization directions of the annular permanent magnet are the same above or below the horizontal plane gamma, so that the available suspension force is limited; also, the magnetic force of the annular permanent magnet or array of magnets in the stator on the float creates a net moment that may cause the float to rotate about its own center in a vertical plane, resulting in instability.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a lateral balance type magnetic suspension device and a lateral balance type magnetic suspension method, which are used for improving the magnitude of the suspension force borne by a floater, fully considering the stress balance and the moment balance of the floater and ensuring the stability of a suspension state.
The lateral balance type magnetic levitation device provided by the present disclosure includes: a magnet assembly, a levitation assembly, and an upright plane for mounting and securing the magnet assembly, wherein:
the magnet assembly comprises a plurality of permanent magnets and/or electromagnets, each magnet is arranged in parallel along one surface of the vertical plane, and the arrangement direction of the two magnetic poles is perpendicular to the plane; the magnet assembly comprises an upper group of magnets and a lower group of magnets, and the arrangement directions of the magnetic poles of the upper group and the lower group are opposite;
the levitation assembly includes a levitation magnet and a non-magnetic object, wherein:
the arrangement direction of the magnetic poles of the suspension magnets is parallel to the direction of the magnetic poles of the magnets in the vertical plane, one magnetic pole faces the vertical plane and is magnetically attracted with the outer ends of the upper group of magnets in the plane and magnetically repelled with the outer ends of the lower group of magnets;
the non-magnetic object is arranged right below the magnetic pole facing the vertical plane in the suspension magnet, and under the combined action of the gravity provided by the non-magnetic object and the magnetic force provided by the magnet component, the resultant force and the resultant moment born by the suspension magnet are zero, and the non-magnetic object is balanced and suspended on one side of the vertical plane.
Further, the magnet assembly includes a plurality of electromagnets, and further includes: a magnetic field sensor, and a control device, wherein:
the magnetic field sensor is arranged in the vertical plane and used for detecting the position state of the suspension magnet, and a Hall sensor can be adopted;
and the control device is used for independently controlling the power of each electromagnet according to the data of the magnetic field sensor so as to adjust the position or state of the levitation magnet or keep the levitation magnet in a balanced state.
Further, the magnets on the vertical plane are arranged in an annular array, and each magnet is symmetrically distributed back and forth relative to a vertical plane where the axis of the array is located, and is symmetrically distributed up and down relative to a horizontal plane where the axis of the array is located: the upper group of magnets is arranged above, and the lower group of magnets is arranged below.
Further, the magnet assembly comprises a plurality of permanent magnets and a plurality of electromagnets, the two types of magnets respectively form a ring-shaped array and are coaxially arranged, the ring-shaped array formed by the electromagnets is positioned on the inner side, and the magnetic field sensor is arranged at the axis position of the ring-shaped array.
Further, the magnetic field sensor includes a lateral detection element and a longitudinal detection element.
The disclosure also provides a lateral balanced magnetic levitation method using the device, comprising the following steps:
placing the suspension magnets in the lateral areas of the vertical plane in a state that two magnetic poles are distributed on the left side and the right side, and adjusting the positions of the suspension magnets until the axes of the suspension magnets are overlapped with the axes of the annular arrays of the permanent magnets;
selecting a proper non-magnetic object, so that the mass center position and the mass of the non-magnetic object meet the following conditions: total moment τ=τ experienced by the levitated magnet relative to its two pole center point O M +τ q =0, where τ M For the moment generated by the magnetic force of the permanent magnet to the levitation magnet, τ q Is the moment of gravity applied to the non-magnetic object to the point O.
The method further comprises the steps of:
when external interference occurs, the magnetic field sensor monitors the position state of the suspension magnet in real time and transmits position state information data to the control device;
the control device independently controls the power of each electromagnet according to the data, and applies electromagnetic force to the suspension magnet, and adjusts and maintains the suspension magnet in a balanced state.
Compared with the prior art, the beneficial effects of the present disclosure are: (1) The magnetic object and the non-magnetic object in the suspension assembly enable the resultant moment of the suspension magnet to be zero, so that the possibility that the suspension magnet rotates around the center point of the suspension magnet in a vertical plane is greatly reduced, and the suspension stability is improved; (2) The suspension assembly is suspended on the side surface of the fixed vertical plate in a balanced manner, and an open space is formed above and below the suspension magnet, so that a new design basis can be provided for commercial products, and the application range of the magnetic suspension products is widened; and (3) the structure is simple and easy to realize.
Drawings
The foregoing and other objects, features and advantages of the disclosure will be apparent from the following more particular descriptions of exemplary embodiments of the disclosure as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the disclosure.
FIG. 1 is a schematic diagram of a first exemplary embodiment according to the present disclosure;
FIG. 2 is a side view of a first embodiment showing a force diagram of a levitated magnet;
FIG. 3 is a schematic view showing the layout of the components on the first embodiment of the fixing riser;
FIG. 4 is a schematic diagram of a second exemplary implementation according to the present disclosure;
FIG. 5 is a schematic view showing a layout of the parts on the second embodiment of the fixing riser;
in the figure: 1. suspension magnet, fixed riser, magnetic force support assembly, 3A, upper pole group, 3B, lower pole group, 31, permanent magnet, 4, positioning platform, 5, leveling assembly, 51, electromagnet, 511, cylindrical armature, 512, solenoid coil, 52, hall sensor, 521, transverse detecting element, 522, longitudinal detecting element, 53, controller.
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The lateral balance type magnetic suspension device provided by the invention has the advantages that the suspension magnet is arranged in one side space of the vertical plane, the suspension magnet is suspended by realizing stress balance through the magnet assembly on the vertical plane, the upper magnetic pole group in the magnet assembly attracts the suspension magnet, the lower magnetic pole group repels the suspension magnet, and meanwhile, a non-magnetic object is arranged below the magnetic pole close to the vertical plane in the suspension magnet to balance the moment generated by the magnetic force born by the suspension magnet, so that the resultant moment born by the suspension magnet is zero, the possibility that the suspension magnet rotates around the center point of the suspension magnet in the vertical plane is greatly reduced, the suspension stability is improved, and more choices are added for the structural design of magnetic suspension application products.
Example 1
A lateral balanced magnetic levitation device according to the present disclosure, as shown in fig. 1 to 3, includes a positioning platform 1, a fixed vertical plate 2, a magnetic force support assembly 3, a levitation assembly 4, and a leveling assembly 5. Wherein:
the lower end of the fixed vertical plate 2 is fixedly arranged on the positioning platform 1 and keeps an upright state; the magnetic force supporting component 3 comprises a plurality of permanent magnets 31, and each permanent magnet 31 is distributed on one surface of the fixed vertical plate 2 and is divided into an upper magnetic pole group 3A and a lower magnetic pole group 3B. The fixed vertical plate is also provided with a leveling component 5 which comprises a plurality of electromagnets 51, a Hall sensor 52 serving as a magnetic field sensor and a controller 53. The permanent magnet and the electromagnet together provide a magnetic field for the levitation assembly.
The permanent magnets 31 on the fixed vertical plate 2 are arranged in an annular array, preferably 8 permanent magnets 31 are arranged, each permanent magnet 31 is symmetrically distributed in front and back relative to a vertical plane where the array axis is located, each permanent magnet 31 is symmetrically distributed in top and bottom relative to a horizontal plane where the array axis is located, the permanent magnet 31 above the horizontal plane is made to be an upper magnetic pole group 3A, the permanent magnet 31 below the horizontal plane is made to be a lower magnetic pole group 3B, and the outward magnetic pole direction of each permanent magnet 31 of the upper magnetic pole group 3A is opposite to the outward magnetic pole direction of each permanent magnet 31 of the lower magnetic pole group 3B.
The electromagnets 51 in the leveling assembly 5 are distributed on one side of the fixed vertical plate 2, on which the permanent magnets 31 are arranged, the electromagnets 51 are arranged at the inner side of the annular array formed by the permanent magnets 31, the electromagnets 51 are arranged in an annular array, and the axle center of the annular array of the electromagnets 51 is arranged coaxially with the axle center of the annular array of the permanent magnets 31. Preferably, the fixed vertical plate 2 is provided with 4 electromagnets 51, two of the electromagnets 51 are located on a vertical plane where the array axis is located, the other two electromagnets are located on a transverse plane where the array axis is located, the electromagnets 51 comprise a cylindrical framework 511 and solenoid coils 512, an iron core is arranged in the cylindrical framework 511, and the solenoid coils 512 are wound outside the cylindrical framework 511. The hall sensor 52 is arranged on the fixed vertical plate 2 and is positioned at the axle center position of the annular array, the hall sensor 52 comprises a transverse detection element 521 and a longitudinal detection element 522 and is used for detecting the position state of the suspension magnet 42, the controller 53 is connected with the hall sensor 52 and each electromagnet 51, and the power of each electromagnet 51 is independently controlled through the data of the hall sensor 52 so as to regulate or maintain the suspension magnet 42 in a balanced state.
The levitation assembly 4 includes a levitation magnet 42, a non-magnetic object 43, and a levitation platform 41 for connecting and securing the two. A levitation magnet 42 and a non-magnetic object 43 are mounted on the levitation platform 41, the non-magnetic object 43 being located below the levitation magnet 42. The levitation magnet 42 has two magnetic poles, the axes of which are coaxially arranged with the axes of the annular arrays of the permanent magnets 31, and one magnetic pole of the levitation magnet 42 faces the direction of the fixed vertical plate 2, magnetically attracts the outer end of the levitation magnet 42 of the upper magnetic pole group 3A of the fixed vertical plate 2, and magnetically repels the outer end of the levitation magnet 42 of the lower magnetic pole group 3B. The nonmagnetic object 43 is located directly below the magnetic pole facing the fixed riser 2 in the levitation magnet 42. Under the combined action of the magnetic force provided by the magnet component and the gravity provided by the non-magnetic object on the fixed vertical plate, the resultant force and the resultant moment of the suspension magnet are zero.
The principle and the method of the lateral balance type magnetic suspension device are as follows:
the suspension magnets 42 are placed on the side surfaces of the fixed vertical plate 2 in a state that two magnetic poles are distributed on the left and right sides, and the suspension magnets 42 are in a cylindrical structure and are adjusted to the positions of the axes of the suspension magnets and the axes of the annular arrays of the permanent magnets 31. In this state, the levitation magnet 42 faces one end of the fixed riser 2, magnetically attracts the outer end of the permanent magnet 31 of the upper magnetic pole group 3A of the fixed riser 2, and magnetically repels the outer end of the permanent magnet 31 of the lower magnetic pole group 3B.
Further detailed analysis is as follows:
taking the center O point of the suspension magnet 42 as an origin, taking the vertical direction as a z axis, taking the central axis of the suspension magnet 42 as a y axis, and establishing a space rectangular coordinate system, e 1 、e 2 And e 3 The basis vectors for the x-axis, y-axis and z-axis, respectively. In the vertical direction, the attraction force F of the upper magnetic pole group 3A of the fixed riser 2 to the levitation magnet 42 is considered 1 Is the vertical component F of (2) 1⊥ And repulsive force F of lower magnetic pole group 3B of fixed riser 2 to levitation magnet 42 2 Is the vertical component F of (2) 2⊥ ，F 1⊥ And F 2⊥ Vertically upward, opposite to the direction of the gravity force exerted by the levitation component 4, so that under the combined action of the magnetic force support component 3 on the fixed vertical plate 2, enough levitation force can be provided to cause the levitation force exerted by the levitation magnet 4 in the vertical direction (F 1⊥ +F 2⊥ ) Balanced with the gravitational forces experienced by the suspension assembly. In the horizontal direction, the attraction force F of the upper magnetic pole group 3A of the fixed riser 2 to the levitation magnet 42 is considered 1 Of (2) horizontal component F 1∥ And repulsive force F of lower magnetic pole group 3B of fixed riser 2 to levitation magnet 42 2 Of (2) horizontal component F 2∥ Since the permanent magnets 31 are symmetrically distributed in front-rear direction with respect to the vertical plane in which the array axes are located, F 1∥ And F 2∥ Are all symmetrical about a vertical plane yOz, and have F after the direction is considered 1∥ ＝|F 1∥ |e 2 ，F 2∥ ＝|F 2∥ |e 2 . And because the permanent magnets 31 on the fixed vertical plate 2 are vertically and symmetrically distributed relative to the transverse plane where the axes of the arrays are positioned, F 1∥ And F 2∥ Equal in size, i.e. |F 1∥ |＝|F 2∥ I, therefore, in the horizontal direction, the levitation magnet 42 is forced F 1∥ +F 2∥ ＝|F 1∥ |e 2 +|F 2∥ |e 2 =0, in a state of force balance. Thus, the levitation magnet 42 is in a force-balanced state in both the vertical and horizontal directions.
Further, consider the moment experienced by the levitation magnet 42. Consider first the moment of the levitation magnet 42 subjected to the magnetic force generated by each permanent magnet 31 of the magnetic support assembly 3. The magnetization of the levitation magnet 42 is m=me 2 The external magnetic field b=b provided by each permanent magnet 31 of the magnetic support assembly 3 1 e 1 +B 2 e 2 +B 3 e 3 In the magnetic suspension system, the O point is taken as a reference point, and the moment tau generated by the magnetic force of each permanent magnet 31 in the magnetic assembly 3 is acted on by the suspension magnet 42 M ＝∫∫∫(M×V)dV＝∫∫∫(-MB 1 e 3 +MB 3 e 1 )dV＝M(∫∫∫B 3 dVe 1 -∫∫∫B 1 dVe 3 ) (where dV represents the voxel of the levitation magnet 42). Since the permanent magnets 31 in the magnetic support assembly 3 are symmetrically distributed back and forth with respect to the vertical plane in which the array axes are located, that is, symmetrically distributed about the plane yOz, the x-direction component B of the external magnetic field B provided by each permanent magnet 31 1 Also symmetrically distributed about the plane yOz, from the symmetry and taking into account the magnetic field direction, has a structure of ≡ 1 dv=0. In addition, the permanent magnets 31 in the magnetic force support assembly 3 are vertically and symmetrically distributed relative to the transverse plane where the array axis is located, but the outward magnetic pole direction of each permanent magnet 31 of the upper magnetic pole group 3A is opposite to the outward magnetic pole direction of each permanent magnet 31 of the lower magnetic pole group 3B, and the moment τ of the levitation magnet 42 is obtained by considering the magnetic field direction according to the symmetry M ＝∫∫∫B 3 dVe 1 And ≡ ≡b 3 dV<0 (because inside the levitation magnet 42 there is B 3 <0 holds true) that causes the levitation magnet 42 to rotate about point O in plane yOz. To balance the moment tau generated by the magnetic force M The resultant moment of the levitation magnet 42 is 0, and the levitation platform 41 is mounted with a mass m q Is located directly below the levitation magnet 42, the centroid Q of the non-magnetic object 43 is located in the plane yOz and the centroid Q is a distance l from the plane xOz q . The non-magnetic object 43 is subjected to gravity-m q ge 3 Moment τ for reference point O q ＝OQ×(-m q ge 3 )＝l q m q ge 1 (where g is gravitational acceleration) which causes the levitating magnet 42 to rotate about point O in plane yOz. Thus, the total torque τ=τ experienced by the levitation magnet 42 relative to the reference point O M +τ q ＝(M∫∫∫B 3 dV+l q m q g)e 1 And has a value of ≡ 3 dV<0，l q m q g>0. Selecting a suitable non-magnetic object 43 to make l q And m q Is suitably sized to combine a total torque τ=0, thus placing the levitation magnet 42 in a torque-balanced state.
In summary, the resultant force of the magnetic force applied to the levitation magnet 42 and the gravity applied to the levitation component 4 is 0, and the resultant moment applied to the levitation magnet 42 is 0, so that the levitation magnet 42 can be levitated on the side surface of the fixed vertical plate 2 in a balanced manner. Because each permanent magnet 31 forms annular array arrangement, each permanent magnet 31 is distributed front and back symmetrically relative to the vertical plane where the array axle center is located, each permanent magnet 31 is distributed up and down symmetrically relative to the horizontal plane where the array axle center is located, and the symmetrical arrangement mode ensures that the magnetic force born by the suspension magnet 42 is uniform and multidirectional, namely, the suspension magnet 42 has certain self-adjusting capability and fault tolerance, and can compensate the manufacturing error amount during the production of products.
Under the conditions of external vibration, incomplete horizontal placement position of the positioning platform 4 and the like, the position of the levitation magnet 42 will change or the trend of the position change, if the position change is too large, the levitation magnet 42 is separated from the balance range of the magnetic force support assembly 3, which can realize the balance support of the levitation magnet, and the levitation magnet 42 is separated from the levitation state. Therefore, the leveling assembly 5 needs to be introduced to make up, the hall sensor 52 comprises a transverse detection element 521 and a longitudinal detection element 522, the vertical plane coverage detection can be realized, the hall sensor 52 monitors the position state of the levitation magnet 42 in real time and transmits position state information data to the controller 53, the controller 53 calculates according to the data information, if the position deviation of the levitation magnet 42 is found, the power of each electromagnet 51 is independently controlled, the electromagnetic force is applied to the levitation magnet 42, and the levitation magnet 42 is adjusted to be in a balanced state and maintained. For example, when the levitation magnet 42 is detected to be biased in one direction, the power of the corresponding electromagnet 51 is increased or decreased to form an electromagnetic force in the opposite bias direction, the magnetic levitation body 1 is adjusted back to the equilibrium state, and then the power of each electromagnet 51 is decreased or increased again to form an electromagnetic force for maintaining the levitation magnet 42 in the equilibrium state. The leveling assembly 5 greatly improves the self-adjusting capacity and fault tolerance of the lateral balanced magnetic levitation device and improves the actual use experience.
Example two
Referring to fig. 4 and 5, in the leveling assembly 5 of the present embodiment, the annular array axes of the electromagnets 51 and the annular array axes of the permanent magnets 31 are coaxially arranged, and the vertical plane β where the array axes are located and the horizontal plane γ where the array axes are located are respectively used as symmetry planes, and four electromagnets 51 are symmetrically distributed in groups of 2 each. This may help to balance the individual electromagnet currents and prevent an electromagnet from being overpower. The rest of the structure and the working principle are similar to those of the first embodiment.
The foregoing technical solutions are merely exemplary embodiments of the present invention, and various modifications and variations can be easily made by those skilled in the art based on the application methods and principles disclosed in the present invention, not limited to the methods described in the foregoing specific embodiments of the present invention, so that the foregoing description is only preferred and not in a limiting sense.

Claims (7)

1. A laterally balanced magnetic levitation device, comprising: a magnet assembly, a levitation assembly, and an upright plane for mounting and securing the magnet assembly, wherein:
the magnet assembly comprises a plurality of permanent magnets and/or electromagnets, each magnet is arranged in parallel along one surface of the vertical plane, and the arrangement direction of the two magnetic poles is perpendicular to the plane; the magnet assembly comprises an upper group of magnets and a lower group of magnets, and the arrangement directions of the magnetic poles of the upper group and the lower group are opposite;
the levitation assembly includes a levitation magnet and a non-magnetic object, wherein:
the arrangement direction of the magnetic poles of the suspension magnets is parallel to the direction of the magnetic poles of the magnets in the vertical plane, one magnetic pole faces the vertical plane and is magnetically attracted with the outer ends of the upper group of magnets in the plane and magnetically repelled with the outer ends of the lower group of magnets;
the non-magnetic object is arranged right below the magnetic pole facing the vertical plane in the suspension magnet, and under the combined action of the gravity provided by the non-magnetic object and the magnetic force provided by the magnet component, the resultant force and the resultant moment born by the suspension magnet are zero, and the non-magnetic object is balanced and suspended on one side of the vertical plane.
2. The apparatus of claim 1, wherein the magnet assembly comprises a plurality of electromagnets, and further comprising: a magnetic field sensor, and a control device, wherein:
a magnetic field sensor installed in the standing plane for detecting a position state of the levitation magnet;
and the control device is used for independently controlling the power of each electromagnet according to the data of the magnetic field sensor so as to adjust the position or state of the levitation magnet or keep the levitation magnet in a balanced state.
3. The device of claim 2, wherein the magnets on the vertical plane are arranged in an annular array, and each of the magnets is symmetrically disposed in front-back relation to a vertical plane in which the array axis is located, and is symmetrically disposed in front-back relation to a horizontal plane in which the array axis is located: the upper group of magnets is arranged above, and the lower group of magnets is arranged below.
4. A device according to claim 3, wherein the magnet assembly comprises a plurality of permanent magnets and a plurality of electromagnets, the two types of magnets respectively form an annular array and are coaxially arranged, the annular array formed by the electromagnets is positioned on the inner side, and the magnetic field sensor is arranged at the axial position of the annular array.
5. The device of any of claims 2-4, wherein the magnetic field sensor comprises a lateral detection element and a longitudinal detection element.
6. A laterally balanced magnetic levitation method using the apparatus of claim 4 or 5, comprising the steps of:
placing the suspension magnets in the lateral areas of the vertical plane in a state that two magnetic poles are distributed on the left side and the right side, and adjusting the positions of the suspension magnets until the axes of the suspension magnets are overlapped with the axes of the annular arrays of the permanent magnets;
selecting a proper non-magnetic object, so that the mass center position and the mass of the non-magnetic object meet the following conditions: total moment τ=relative to the center point O of the two poles of the levitation magnet M + q =0, where τ M For the moment generated by the magnetic force of the permanent magnet to the levitation magnet, τ q Is the moment of gravity applied to the non-magnetic object to the point O.
7. The method of claim 6, further comprising the step of:
when external interference occurs, the magnetic field sensor monitors the position state of the suspension magnet in real time and transmits position state information data to the control device;
the control device independently controls the power of each electromagnet according to the data, applies electromagnetic force to the suspension magnet, and adjusts and maintains the suspension magnet in a balanced state.
CN202310623695.8A 2023-05-30 2023-05-30 Lateral balance type magnetic suspension device and method Pending CN116915091A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310623695.8A CN116915091A (en) 2023-05-30 2023-05-30 Lateral balance type magnetic suspension device and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310623695.8A CN116915091A (en) 2023-05-30 2023-05-30 Lateral balance type magnetic suspension device and method

Publications (1)

Publication Number Publication Date
CN116915091A true CN116915091A (en) 2023-10-20

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Application Number Title Priority Date Filing Date
CN202310623695.8A Pending CN116915091A (en) 2023-05-30 2023-05-30 Lateral balance type magnetic suspension device and method

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