Magnetic suspension motor

Abstract

A magnetic suspension motor provided by the present invention comprises a rotating shaft arranged in a shell, a first magnetic member and a first electromagnetic assembly, the first magnetic member is installed at the first end of the rotating shaft, the first electromagnetic assembly is fixed on the inner wall of the shell, and the first electromagnetic assembly is opposite to the first magnetic member. The polarity of the side, facing the first magnetic piece, of the first electromagnetic assembly is the same as that of the side, facing the first electromagnetic assembly, of the first magnetic piece, and the magnetic field intensity generated by the first electromagnetic assembly is in negative correlation with the distance between the first magnetic piece and the first electromagnetic assembly. According to the invention, after the rotating shaft deviates towards the direction of the first electromagnetic assembly along the axial direction, the repulsive force generated between the first magnetic part and the first electromagnetic assembly is enhanced, and the repulsive force is enhanced to force the rotating shaft to automatically return along the axial direction, so that the axial position of the rotating shaft does not need to be detected in real time; and the problems of high cost and low measurement precision of a detection method for the axial position of the rotating shaft are solved.

Description

Technical Field

[0001] This invention belongs to the field of motor technology, specifically relating to a magnetic levitation motor. Background Technology

[0002] In existing technologies, controlling the axial position of the shaft of a magnetic levitation motor requires correction based on the real-time axial position of the shaft, which necessitates real-time detection of the shaft's axial position. However, methods for detecting the axial position of the shaft are not only costly but also have low measurement accuracy. Summary of the Invention

[0003] Therefore, the present invention provides a magnetic levitation motor that can solve the technical problems that the method for detecting the axial position of the shaft of a magnetic levitation motor is not only costly but also has low measurement accuracy.

[0004] To address the aforementioned problems, this invention provides a magnetic levitation motor, comprising a housing, a rotating shaft, a first magnetic component, and a first electromagnetic assembly. The rotating shaft, the first magnetic component, and the first electromagnetic assembly are all disposed within the housing. The first magnetic component is mounted on a first end of the rotating shaft, and the first electromagnetic assembly is fixed to the inner wall of the housing. The first electromagnetic assembly and the first magnetic component face each other. The polarity of the side of the first electromagnetic assembly facing the first magnetic component is the same as the polarity of the side of the first magnetic component facing the first electromagnetic assembly. The magnetic field strength generated by the first electromagnetic assembly is negatively correlated with the distance between the first magnetic component and the first electromagnetic assembly.

[0005] In some embodiments, the first electromagnetic component includes a first magnetic mating member, a first piezoelectric sheet, and a first coil. The first piezoelectric sheet is clamped between the first magnetic mating member and the inner wall of the housing. The first coil is wound around the periphery of the first magnetic mating member and is in communication with the first piezoelectric sheet. The first magnetic mating member and the first magnetic component are opposite to each other.

[0006] In some embodiments, the first electromagnetic component further includes a first iron core sleeve, which is fitted onto the first magnetic mating member, and the first coil is wound around the first iron core sleeve.

[0007] In some embodiments, the first magnetic component has a first center line, the first magnetic mating component has a second center line, and the rotating shaft has a third center line, wherein the first center line, the second center line, and the third center line coincide.

[0008] In some embodiments, the first end of the rotating shaft is provided with a first groove, the first magnetic element is installed in the first groove, and the depth of the first groove is greater than the thickness of the first magnetic element.

[0009] In some embodiments, a second magnetic element and a second electromagnetic component are further provided inside the housing. The second magnetic element is mounted on the second end of the rotating shaft, and the second electromagnetic component is fixed on the inner wall of the housing. The second electromagnetic component and the second magnetic element face each other. The polarity of the side of the second electromagnetic component facing the second magnetic element is the same as the polarity of the side of the second magnetic element facing the second electromagnetic component. The magnetic field strength generated by the second electromagnetic component is negatively correlated with the distance between the second magnetic element and the second electromagnetic component.

[0010] In some embodiments, the second electromagnetic component includes a second magnetic mating member, a second piezoelectric sheet, and a second coil. The second piezoelectric sheet is clamped between the second magnetic mating member and the inner wall of the housing. The second coil is wound around the periphery of the second magnetic mating member and is in communication with the second piezoelectric sheet. The second magnetic mating member and the second magnetic component are opposite to each other.

[0011] In some embodiments, the second electromagnetic component further includes a second iron core sleeve, which is fitted onto the second magnetic mating member, and the second coil is wound on the second iron core sleeve.

[0012] In some embodiments, the second magnetic element has a fourth center line, the second magnetic mating element has a fifth center line, the rotating shaft has a third center line, and the fourth center line, the fifth center line, and the third center line coincide.

[0013] In some embodiments, the second end of the rotating shaft is provided with a second groove, the second magnetic element is installed in the second groove, and the depth of the second groove is greater than the thickness of the second magnetic element.

[0014] The magnetic levitation motor provided by this invention has the following beneficial effects:

[0015] When the shaft shifts axially towards the direction of the first electromagnetic component, the distance between the first magnetic component and the first electromagnetic component decreases. Since the magnetic field strength generated by the first electromagnetic component is negatively correlated with the distance between them, the magnetic field strength increases as the distance decreases. Furthermore, because the polarity of the side of the first electromagnetic component facing the first magnetic component is the same as the polarity of the side of the first magnetic component facing the first electromagnetic component, the increased magnetic field strength strengthens the repulsive force between the two components. This increased repulsive force forces the shaft to automatically return to its axial position. This eliminates the need for real-time detection of the shaft's axial position, thus avoiding the problems of high cost and low accuracy associated with traditional axial position detection methods. Attached Figure Description

[0016] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a cross-sectional view of the magnetic levitation motor according to an embodiment of the present invention;

[0018] Figure 2 This is a cross-sectional view of the first electromagnetic component of the magnetic levitation motor according to an embodiment of the present invention.

[0019] Figure 3 This is a cross-sectional view of the second electromagnetic component of the magnetic levitation motor according to an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the rotating shaft of the magnetic levitation motor according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the rotating shaft of the magnetic levitation motor according to an embodiment of the present invention.

[0022] The reference numerals in the attached figures are as follows:

[0023] 1. Housing; 2. Shaft; 3. First magnetic component; 4. First electromagnetic assembly; 41. First magnetic mating component; 42. First piezoelectric sheet; 43. First coil; 44. First iron core sleeve; 5. First groove; 6. Second magnetic component; 7. Second electromagnetic assembly; 71. Second magnetic mating component; 72. Second piezoelectric sheet; 73. Second coil; 74. Second iron core sleeve; 8. Second groove. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0026] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0028] See also Figures 1 to 5 As shown, according to an embodiment of the present invention, a magnetic levitation motor is provided, including a housing 1, a rotating shaft 2, a first magnetic component 3, and a first electromagnetic component 4. The rotating shaft 2, the first magnetic component 3, and the first electromagnetic component 4 are all disposed inside the housing 1. The first magnetic component 3 is installed at the first end of the rotating shaft 1, and the first electromagnetic component 4 is fixed on the inner wall of the housing 1. The first electromagnetic component 4 and the first magnetic component 3 face each other. The polarity of the side of the first electromagnetic component 4 facing the first magnetic component 3 is the same as the polarity of the side of the first magnetic component 3 facing the first electromagnetic component 4. The magnetic field strength generated by the first electromagnetic component 4 is negatively correlated with the distance between the first magnetic component 3 and the first electromagnetic component 4.

[0029] In this technical solution, when the rotating shaft 2 shifts along its axial direction towards the location of the first electromagnetic component 4, the distance between the first magnetic component 3 and the first electromagnetic component 4 decreases. Since the magnetic field strength generated by the first electromagnetic component 4 is negatively correlated with the distance between the first magnetic component 3 and the first electromagnetic component 4, the magnetic field strength generated by the first electromagnetic component 4 increases after the distance between them decreases. Furthermore, because the polarity of the side of the first electromagnetic component 4 facing the first magnetic component 3 is the same as the polarity of the side of the first magnetic component 3 facing the first electromagnetic component 4, the increased magnetic field strength generated by the first electromagnetic component 4 will increase the repulsive force between the first magnetic component 3 and the first electromagnetic component 4. This increased repulsive force forces the rotating shaft 2 to automatically return to its axial position. Therefore, there is no need to detect the axial position of the rotating shaft 2 in real time, thus avoiding the problems of high cost and low measurement accuracy associated with traditional axial position detection methods. The first magnetic component 3 can be a permanent magnet.

[0030] See also Figure 1 and Figure 2 As shown, the first electromagnetic component 4 includes a first magnetic mating member 41, a first piezoelectric sheet 42, and a first coil 43. The first piezoelectric sheet 42 is clamped between the first magnetic mating member 41 and the inner wall of the housing 1. The first coil 43 is wound around the periphery of the first magnetic mating member 41, and the first coil 43 is in communication with the first piezoelectric sheet 42. The first magnetic mating member 41 and the first magnetic component 3 face each other.

[0031] In this embodiment, the first piezoelectric element 42 has extremely high sensitivity, and its specific material can be lead zirconate titanate, etc. Due to the material properties, the first piezoelectric element 42 converts pressure into voltage when subjected to pressure. According to the piezoelectric effect, voltage is generated on the two opposite surfaces of the first piezoelectric element 42. When the two ends of the first coil 43 are connected to the positive and negative poles of the first piezoelectric element 42, the first piezoelectric element 42 supplies power to the first coil 43 when subjected to force, thereby causing the first coil 43 to generate a magnetic field. When the rotating shaft 2 is offset along its axial direction towards the location of the first electromagnetic component 4, the repulsive force generated between the first magnetic element 3 and the first magnetic mating element 41 will increase, thereby increasing the pressure exerted by the first magnetic mating element 41 on the first piezoelectric element 42. After the first piezoelectric element 42 receives increased pressure from the first magnetic mating element 41, the voltage generated by the first piezoelectric element 42 will increase, thereby increasing the magnetic field strength generated by the first coil 43. Therefore, the magnetic field strength generated by the first electromagnetic component 4 can be negatively correlated with the distance between the first magnetic element 3 and the first electromagnetic component 4. It is understood that the first magnetic mating component 41 can be a permanent magnet. The polarity of the side of the first magnetic mating component 41 facing the first magnetic component 3 is the same as the polarity of the side of the first magnetic component 3 facing the first magnetic mating component 41. In order to make the magnetic pole direction of the magnetic field generated by the first coil 43 the same as the magnetic pole direction of the first magnetic mating component 41, the winding method of the first coil 43 is determined according to the right-hand rule.

[0032] See also Figure 1 and Figure 2 As shown, the first electromagnetic component 4 also includes a first iron core sleeve 44, which is fitted onto the first magnetic mating member 41, and the first coil 43 is wound around the first iron core sleeve 44.

[0033] In this technical solution, by adding a first iron core sleeve 44, the first coil 43 is wound around the first iron core sleeve 44, thereby enhancing the magnetic field strength generated by the first coil 43. The first iron core sleeve 44 can be made of stacked silicon steel sheets. Specifically, the first magnetic mating component 41 is bonded to one end face of the first piezoelectric sheet 42, the other end face of the first piezoelectric sheet 42 is bonded to the inner wall of the housing 1, and the first iron core sleeve 44 is bonded to the outer peripheral wall of the first magnetic mating component 41 and the first piezoelectric sheet 42. The entire first electromagnetic assembly 4 has a simple structure, occupies little space within the housing 1, and can reduce costs.

[0034] In one specific implementation, the first magnetic component 3 has a first center line, the first magnetic mating component 41 has a second center line, the rotating shaft 2 has a third center line, and the first iron core sleeve 44 has a fourth center line, with the first center line, the second center line, the third center line, and the fourth center line coinciding.

[0035] In this embodiment, both the first magnetic component 3 and the first magnetic mating component 41 are regular structures, which can be cylinders or cubes. The shape of the first iron core sleeve 44 is determined according to the shape of the first magnetic mating component 41. When the first center line of the first magnetic component 3, the second center line of the first magnetic mating component 41, the third center line of the rotating shaft 2, and the fourth center line of the first iron core sleeve 44 coincide, it can be ensured that the force on the rotating shaft 2 is entirely along the center line direction of the rotating shaft 2, thereby ensuring the positional accuracy of the rotating shaft 2 after it automatically returns to its axial position.

[0036] See also Figure 1 , Figure 4 and Figure 5 As shown, the first end of the rotating shaft 1 is constructed with a first groove 5, and the first magnetic element 3 is installed in the first groove 5. The depth of the first groove 5 is greater than the thickness of the first magnetic element 3.

[0037] In this technical solution, the first magnetic component 3 can be installed in the first groove 5 by bonding with epoxy resin. When the depth of the first groove 5 is greater than the thickness of the first magnetic component 3, the first magnetic component 3 can be completely contained within the first groove 5. When the first magnetic component 3 is completely contained within the first groove 5, it can prevent the first magnetic component 3 from being thrown out during high-speed rotation of the rotating shaft 1, thus improving the fixing effect.

[0038] See Figure 1 As shown, a second magnetic component 6 and a second electromagnetic component 7 are also provided inside the housing 1. The second magnetic component 6 is installed at the second end of the rotating shaft 1, and the second electromagnetic component 7 is fixed on the inner wall of the housing 1. The second electromagnetic component 7 and the second magnetic component 6 face each other. The polarity of the side of the second electromagnetic component 7 facing the second magnetic component 6 is the same as the polarity of the side of the second magnetic component 6 facing the second electromagnetic component 7. The magnetic field strength generated by the second electromagnetic component 7 is negatively correlated with the distance between the second magnetic component 6 and the second electromagnetic component 7.

[0039] In this embodiment, when the rotating shaft 2 shifts along its axial direction towards the location of the second electromagnetic component 7, the distance between the second magnetic element 6 and the second electromagnetic component 7 decreases. Since the magnetic field strength generated by the second electromagnetic component 7 is negatively correlated with the distance between the second magnetic element 6 and the second electromagnetic component 7, the magnetic field strength generated by the second electromagnetic component 7 increases after the distance between the two decreases. Furthermore, because the polarity of the side of the second electromagnetic component 7 facing the second magnetic element 6 is the same as the polarity of the side of the second magnetic element 6 facing the second electromagnetic component 7, the increased magnetic field strength generated by the second electromagnetic component 7 will increase the repulsive force between the second magnetic element 6 and the second electromagnetic component 7. This increased repulsive force forces the rotating shaft 2 to automatically return to its axial position. Combined with the previously described first magnetic element 3 and first electromagnetic component 4, the rotating shaft 2 will automatically return to its axial position regardless of which direction it shifts. The first magnetic element 3 can be a permanent magnet.

[0040] See also Figure 1 and Figure 3 As shown, the second electromagnetic component 7 includes a second magnetic mating member 71, a second piezoelectric sheet 72, and a second coil 73. The second piezoelectric sheet 72 is sandwiched between the second magnetic mating member 71 and the inner wall of the housing 1. The second coil 73 is wound around the periphery of the second magnetic mating member 71 and is in communication with the second piezoelectric sheet 72. The second magnetic mating member 71 and the second magnetic component 6 face each other.

[0041] In this technical solution, the second piezoelectric element 72 has extremely high sensitivity, and its specific material can be lead zirconate titanate, etc. Due to the material properties, the second piezoelectric element 72 converts pressure into voltage when subjected to pressure. According to the piezoelectric effect, a voltage is generated on the two opposite surfaces of the second piezoelectric element 72. When the two ends of the second coil 73 are connected to the positive and negative poles of the second piezoelectric element 72, the second piezoelectric element 72 supplies power to the second coil 73 when subjected to force, thereby causing the second coil 73 to generate a magnetic field. When the rotating shaft 2 is offset along its axial direction towards the location of the second electromagnetic component 7, the repulsive force generated between the second magnetic element 6 and the second magnetic mating element 71 will increase, thereby increasing the pressure exerted by the second magnetic mating element 71 on the second piezoelectric element 72. After the second piezoelectric element 72 receives increased pressure from the second magnetic mating element 71, the voltage generated by the second piezoelectric element 72 will increase, thereby increasing the magnetic field strength generated by the second coil 73. Therefore, the magnetic field strength generated by the second electromagnetic component 7 can be negatively correlated with the distance between the second magnetic element 6 and the second electromagnetic component 7. It is understood that the second magnetic mating component 71 can be a permanent magnet. The polarity of the side of the second magnetic mating component 71 facing the second magnetic component 6 is the same as the polarity of the side of the second magnetic component 6 facing the second magnetic mating component 71. In order to make the magnetic field pole direction generated by the second coil 73 the same as the magnetic pole direction of the second magnetic mating component 71, the winding method of the second coil 73 is determined according to the right-hand rule.

[0042] See also Figure 1 and Figure 3 As shown, the second electromagnetic component 7 also includes a second iron core sleeve 74, which is fitted onto the second magnetic mating member 71, and the second coil 73 is wound around the second iron core sleeve 74.

[0043] In this embodiment, by adding a second iron core sleeve 74, the second coil 73 is wound around the second iron core sleeve 74, thereby enhancing the magnetic field strength generated by the second coil 73. The second iron core sleeve 74 can be made of stacked silicon steel sheets. Specifically, the second magnetic mating member 71 is bonded to one end face of the second piezoelectric sheet 72, the other end face of the second piezoelectric sheet 72 is bonded to the inner wall of the housing 1, and the second iron core sleeve 74 is bonded to the outer peripheral wall of the second magnetic mating member 71 and the second piezoelectric sheet 72. The entire second electromagnetic assembly 7 has a simple structure, occupies little space within the housing 1, and can reduce costs.

[0044] In one specific implementation, the second magnetic component 6 has a fifth center line, the second magnetic mating component 71 has a sixth center line, the rotating shaft 2 has a third center line, and the second iron core sleeve 74 has a seventh center line. The fifth, sixth, third, and seventh center lines coincide.

[0045] In this technical solution, both the second magnetic component 6 and the second magnetic mating component 71 are regular structures, which can be cylindrical or cubic. The shape of the second iron core sleeve 74 is determined according to the shape of the second magnetic mating component 71. When the fifth center line of the second magnetic component 6, the sixth center line of the second magnetic mating component 71, the third center line of the rotating shaft 2, and the seventh center line of the second iron core sleeve 74 coincide, it can be ensured that the force on the rotating shaft 2 is entirely along the center line direction of the rotating shaft 2, thereby ensuring the positional accuracy of the rotating shaft 2 after automatic axial return.

[0046] See also Figure 1 , Figure 4 and Figure 5 As shown, the second end of the rotating shaft 1 is constructed with a second groove 8, and the second magnetic element 6 is installed in the second groove 8. The depth of the second groove 8 is greater than the thickness of the second magnetic element 6.

[0047] In this embodiment, the second magnetic element 6 can be installed in the second groove 8 by bonding with epoxy resin. When the depth of the second groove 8 is greater than the thickness of the second magnetic element 6, the second magnetic element 6 can be completely contained within the second groove 8. When the second magnetic element 6 is completely contained within the second groove 8, it can prevent the second magnetic element 6 from being thrown out during high-speed rotation of the rotating shaft 1, thus improving the fixing effect.

[0048] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A magnetic levitation motor, characterized in that, The device includes a housing (1), a rotating shaft (2), a first magnetic component (3), and a first electromagnetic component (4). The rotating shaft (2), the first magnetic component (3), and the first electromagnetic component (4) are all disposed inside the housing (1). The first magnetic component (3) is installed at the first end of the rotating shaft (1). The first electromagnetic component (4) is fixed on the inner wall of the housing (1). The first electromagnetic component (4) and the first magnetic component (3) face each other. The polarity of the side of the first electromagnetic component (4) facing the first magnetic component (3) is the same as the polarity of the side of the first magnetic component (3) facing the first electromagnetic component (4). The magnetic field strength generated by the first electromagnetic component (4) is negatively correlated with the distance between the first magnetic component (3) and the first electromagnetic component (4).

2. The magnetic levitation motor according to claim 1, characterized in that, The first electromagnetic component (4) includes a first magnetic mating member (41), a first piezoelectric sheet (42), and a first coil (43). The first piezoelectric sheet (42) is clamped between the first magnetic mating member (41) and the inner wall of the housing (1). The first coil (43) is wound around the periphery of the first magnetic mating member (41), and the first coil (43) is in communication with the first piezoelectric sheet (42). The first magnetic mating member (41) and the first magnetic component (3) are opposite to each other.

3. The magnetic levitation motor according to claim 2, characterized in that, The first electromagnetic component (4) further includes a first iron core sleeve (44), which is fitted onto the first magnetic mating member (41), and the first coil (43) is wound around the first iron core sleeve (44).

4. The magnetic levitation motor according to claim 3, characterized in that, The first magnetic component (3) has a first center line, the first magnetic mating component (41) has a second center line, the rotating shaft (2) has a third center line, and the first iron core sleeve (44) has a fourth center line. The first center line, the second center line, the third center line, and the fourth center line coincide.

5. The magnetic levitation motor according to any one of claims 1 to 4, characterized in that, The first end of the rotating shaft (1) is provided with a first groove (5), and the first magnetic element (3) is installed in the first groove (5). The depth of the first groove (5) is greater than the thickness of the first magnetic element (3).

6. The magnetic levitation motor according to claim 1, characterized in that, The housing (1) is further provided with a second magnetic component (6) and a second electromagnetic component (7). The second magnetic component (6) is installed at the second end of the rotating shaft (1). The second electromagnetic component (7) is fixed on the inner wall of the housing (1). The second electromagnetic component (7) and the second magnetic component (6) face each other. The polarity of the side of the second electromagnetic component (7) facing the second magnetic component (6) is the same as the polarity of the side of the second magnetic component (6) facing the second electromagnetic component (7). The magnetic field strength generated by the second electromagnetic component (7) is negatively correlated with the distance between the second magnetic component (6) and the second electromagnetic component (7).

7. The magnetic levitation motor according to claim 6, characterized in that, The second electromagnetic component (7) includes a second magnetic mating part (71), a second piezoelectric sheet (72), and a second coil (73). The second piezoelectric sheet (72) is clamped between the second magnetic mating part (71) and the inner wall of the housing (1). The second coil (73) is wound around the periphery of the second magnetic mating part (71), and the second coil (73) is in communication with the second piezoelectric sheet (72). The second magnetic mating part (71) and the second magnetic part (6) are opposite to each other.

8. The magnetic levitation motor according to claim 7, characterized in that, The second electromagnetic component (7) further includes a second iron core sleeve (74), which is fitted onto the second magnetic mating member (71), and the second coil (73) is wound around the second iron core sleeve (74).

9. The magnetic levitation motor according to claim 8, characterized in that, The second magnetic component (6) has a fifth center line, the second magnetic mating component (71) has a sixth center line, the rotating shaft (2) has a third center line, and the second iron core sleeve (74) has a seventh center line. The fifth center line, the sixth center line, the third center line, and the seventh center line coincide.

10. The magnetic levitation motor according to any one of claims 6 to 9, characterized in that, The second end of the rotating shaft (1) is provided with a second groove (8), and the second magnetic element (6) is installed in the second groove (8). The depth of the second groove (8) is greater than the thickness of the second magnetic element (6).

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