CN117656735A - Electromagnetic suspension and vehicle - Google Patents
Electromagnetic suspension and vehicle Download PDFInfo
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- CN117656735A CN117656735A CN202310363454.4A CN202310363454A CN117656735A CN 117656735 A CN117656735 A CN 117656735A CN 202310363454 A CN202310363454 A CN 202310363454A CN 117656735 A CN117656735 A CN 117656735A
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- 239000000725 suspension Substances 0.000 title claims abstract description 78
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 26
- 230000009467 reduction Effects 0.000 abstract description 24
- 238000013016 damping Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 4
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- 238000005265 energy consumption Methods 0.000 description 2
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Abstract
The invention discloses an electromagnetic suspension and a vehicle, wherein the electromagnetic suspension comprises a linear motor unit and an elastic unit, the linear motor unit comprises a stator assembly and a rotor assembly, one of the stator assembly and the rotor assembly is suitable for being connected with a vehicle body, the other one of the stator assembly and the rotor assembly is suitable for being connected with a wheel, the stator assembly comprises a plurality of stators, the rotor assembly comprises a plurality of rotors, the number of the rotors is the same as that of the stators and corresponds to that of the stators one by one, each pair of stators and the rotors form a sub-linear motor, at least part of stators are independently controlled, and the elastic unit is connected with the linear motor unit. According to the electromagnetic suspension provided by the embodiment of the invention, the plurality of stators and the plurality of movers are arranged, and each pair of stators and the movers form one sub-linear motor, so that the linear motor unit is provided with the plurality of sub-linear motors, the integral thrust of the linear motor unit can be increased, the thrust range is enlarged, the vibration reduction effect of the electromagnetic suspension on a vehicle can be improved, and the stability of the vehicle is improved.
Description
Technical Field
The invention relates to the field of vehicles, in particular to an electromagnetic suspension and a vehicle.
Background
The electromagnetic suspension is installed between a body and wheels of a vehicle, and dampens vibration of the body by thrust generated by a motor. In the related art, the whole thrust of the linear motor unit is too small, and the thrust range is smaller, so that the whole vibration reduction effect of the electromagnetic suspension is poor, and the stability of the vehicle in running is not guaranteed.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide an electromagnetic suspension, in which a plurality of stators and a plurality of movers are provided, and each pair of stators and movers form one sub-linear motor, so that a linear motor unit can have a plurality of sub-linear motors, the plurality of sub-linear motors can increase the thrust of the whole linear motor unit, and the thrust range of the whole linear motor is enlarged, thereby improving the vibration reduction effect of the electromagnetic suspension on a vehicle and improving the stability of the vehicle.
The invention further provides a vehicle with the electromagnetic suspension.
An electromagnetic suspension according to an embodiment of the first aspect of the present invention includes: the linear motor unit comprises a stator assembly and a rotor assembly, one of the stator assembly and the rotor assembly is suitable for being connected with a vehicle body, the other one of the stator assembly and the rotor assembly is suitable for being connected with a vehicle wheel, the stator assembly comprises a plurality of stators, the rotor assembly comprises a plurality of rotors, the number of the rotors is the same as that of the stators and corresponds to that of the stators one by one, each pair of the stators and the rotors form a sub linear motor, and at least part of the stators are independently controlled; and the elastic unit is connected with the linear motor unit.
According to the electromagnetic suspension provided by the embodiment of the invention, the plurality of stators and the plurality of movers are arranged, each pair of stators and the movers form one sub-linear motor, so that the linear motor unit is provided with the plurality of sub-linear motors, the plurality of sub-linear motors can increase the integral thrust of the linear motor unit and expand the integral thrust range of the linear motor, and therefore, the vibration reduction effect of the electromagnetic suspension on a vehicle can be improved, and the stability of the vehicle is improved.
According to some embodiments of the invention, each of the stators is independently controlled.
According to some embodiments of the invention, the sub-linear motor is flat.
According to some embodiments of the invention, the stator assembly comprises a housing and a plurality of stators, the stators and the movers are all arranged in the housing, the stators are connected with the housing, the axial direction of the housing extends along the up-down direction, and the plurality of sub linear motors are arranged along the circumferential direction of the housing.
According to some embodiments of the invention, the plurality of sub-linear motors are arranged in a polygon.
According to some embodiments of the invention, the number of the sub-linear motors is three, and the three sub-linear motors are arranged in a triangle.
According to some embodiments of the invention, the stator is flat; and/or the mover is in a flat plate shape.
According to some embodiments of the invention, the stator of the sub-linear motor is disposed parallel and opposite to the corresponding mover.
According to some embodiments of the invention, the mover assembly further comprises: the mounting piece, a plurality of the active cell is all located the mounting piece, the mounting piece is suitable for with the wheel links to each other.
According to some embodiments of the invention, the plurality of movers are arranged along a circumferential direction of the mount.
According to some embodiments of the invention, the outer circumferential surface of the mounting member has a plurality of mounting surfaces arranged along the circumferential direction of the mounting member, the mounting surfaces are plane surfaces, the number of the mounting surfaces is the same as that of the movers and corresponds to one, and the movers are mounted and fixed on the corresponding mounting surfaces.
According to some embodiments of the invention, the number of the movers is three, the number of the mounting surfaces is three, and the cross section of the mounting piece is triangular.
According to some embodiments of the invention, the electromagnetic suspension further comprises: the guide rod extends along the upper and lower direction, the mounting is formed with the guide slot that extends along the upper and lower direction, the one end of guide rod with stator module links to each other and the other end is the free end, the other end of guide rod is located in the guide slot.
According to some alternative embodiments of the invention, the elastic unit comprises a spring, the spring is sleeved on the outer peripheral side of the linear motor unit, the upper end of the spring is connected with the stator assembly, and the lower end of the spring is connected with the rotor assembly.
According to some embodiments of the invention, the vehicle electromagnetic suspension further comprises: the upper support is arranged at the upper end of the stator assembly, the lower support is arranged at the lower end of the rotor assembly, the upper end of the spring is connected with the upper support, and the lower end of the spring is connected with the lower support.
According to an embodiment of the second aspect of the present invention, a vehicle includes: an electromagnetic suspension according to an embodiment of the above first aspect of the present invention.
According to the vehicle provided by the embodiment of the invention, by arranging the electromagnetic suspension, the linear motor unit is provided with the plurality of sub linear motors by arranging the plurality of stators and the plurality of movers, and each pair of stators and the movers form one sub linear motor, the plurality of sub linear motors can increase the thrust of the whole linear motor unit and expand the whole thrust range of the linear motor, so that the vibration reduction effect of the electromagnetic suspension on the vehicle can be improved, and the stability of the vehicle is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic illustration of an assembly of an electromagnetic suspension with an on-wheel brake according to some embodiments of the present invention;
FIG. 2 is a longitudinal cross-sectional view of the electromagnetic suspension of FIG. 1;
fig. 3 is a transverse cross-sectional view of the electromagnetic suspension of fig. 1.
Reference numerals:
100. an electromagnetic suspension;
10. a linear motor unit; 1. a stator assembly; 11. a stator; 12. a housing; 2. a mover assembly; 21. a mover; 22. a mounting member; 221. a mounting surface; 222. a guide groove; 3. a sub linear motor; 4. a mounting flange; 5. a guide rod;
20. an elastic unit; 61. a spring; 62. an upper support; 63. a lower support;
30. a connecting rod structure;
40. a brake.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
An electromagnetic suspension 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
As shown in fig. 1 to 3, an electromagnetic suspension 100 according to an embodiment of the first aspect of the present invention includes: a linear motor unit 10 and an elastic unit 20.
The linear motor unit 10 includes a stator assembly 1 and a mover assembly 2, one of the stator assembly 1 and the mover assembly 2 being adapted to be connected to a vehicle body and the other being adapted to be connected to a wheel. For example, when the stator assembly 1 is attached to the vehicle body, the mover assembly 2 is attached to the vehicle wheel; when the stator assembly 1 is connected to the wheel, the mover assembly 2 is connected to the vehicle body. When the linear motor unit 10 is operated, an interaction force between the stator assembly 1 and the mover assembly 2 may be generated, so that a relative movement between the stator assembly 1 and the mover assembly 2 is generated in an up-down direction. One of the stator assembly 1 and the rotor assembly 2 is suitable for being connected with a vehicle body and the other is suitable for being connected with wheels, and the distance between the vehicle body and the wheels can be controlled when the linear motor unit 10 works, so that the vibration reduction effect of the linear motor unit 10 on the vehicle body can be realized when the vehicle runs on an uneven road surface.
For example, in some embodiments of the present invention, the vehicle may independently control the linear motor units 10 on different sides of the vehicle, thereby enhancing the vibration damping effect of the electromagnetic suspension 100 on the vehicle. When the vehicle runs on the road, the vehicle speed sensor, the vehicle height position sensor and the vehicle body acceleration sensor collect real-time information of the vehicle at the moment and simultaneously transmit the collected information to the control module in real time. The control module compares the information feedback with the preset index height, and outputs corresponding signals to the electromagnetic control module and the power module according to the comparison result. The power module outputs control information such as different current sizes, directions, the number of the control execution sub linear motors 3 and the like to the linear motor units 10 on different sides of the vehicle, so that the linear motor units 10 on different sides output corresponding required force to restrain up-and-down motion of the vehicle body, and the actual height of the vehicle body is adjusted to the required index height, thereby better realizing the vibration reduction effect of the electromagnetic suspension 100 on the vehicle and improving the stability of the vehicle in the running process.
In addition, the vehicle can also improve the trafficability and the escaping ability of the vehicle by independently controlling the linear motor units 10 on different sides of the vehicle. When the unilateral wheel encounters a road surface with a low attachment coefficient and a slipping phenomenon occurs, the control module can output current in the corresponding direction and the corresponding magnitude to the linear motor unit 10 on the corresponding side through the battery control module and the power module, so that the linear motor unit 10 can lift the unilateral wheel, and the trafficability of the vehicle and the escaping capability are improved.
The stator assembly 1 includes a plurality of stators 11, and the mover assembly 2 includes a plurality of movers 21, the number of the movers 21 being the same as and corresponding to the number of the stators 11 one by one, so that each of the movers 21 can be positioned opposite to one of the stators 11. Each pair of stator 11 and mover 21 constitutes one sub-linear motor 3. The stator 11 may include an electromagnetic coil, and the mover 21 may include a permanent magnet. When the sub-linear motor 3 is operated, when current passes through the electromagnetic coil in the stator 11, the electromagnetic coil generates a magnetic field, and a repulsive or attractive magnetic force is generated between the stator 11 and the mover 21 according to the interaction between the magnetic field of the stator 11 and the magnetic field of the permanent magnet in the mover 21, so that the stator 11 and the mover 21 are relatively moved in the up-down direction.
By such arrangement, the linear motor unit 10 can be provided with the plurality of sub-linear motors 3, and when the linear motor unit 10 works, compared with the single sub-linear motor 3 in the related art, the plurality of sub-linear motors 3 can increase the whole thrust of the linear motor unit 10 and expand the whole thrust range of the linear motor unit 10, so that the vibration reduction effect of the linear motor unit 10 on the vehicle can be improved, and the stability of the vehicle can be improved.
At least part of the stators 11 are independently controllable, e.g. part of the stators 11 may be independently controllable or all of the stators 11 may be independently controllable. The independent control of the stator 11 is that the electromagnetic coil of the stator 11 can be controlled independently, and the independent control of the electromagnetic coil of the stator 11 comprises the control of the connection or disconnection of the current in the electromagnetic coil, and can also further comprise the current magnitude and the current direction in the electromagnetic coil. When the linear motor unit 10 works, at least part of the stators 11 can be independently controlled, so that the number of the stators 11 electrified in the stator assembly 1 can be changed, the working number of the sub-linear motors 3 is changed, the adjustment of the whole thrust of the linear motor unit 10 is realized, the electromagnetic suspension 100 can meet the vibration reduction requirement of a vehicle, and the whole vibration reduction effect is improved.
The thrust of the electromagnetic suspension 100 on the vehicle body is required to be different for the vehicle body under different vibration amplitudes. For example, when the vehicle body vibration amplitude is large, the thrust force that the electromagnetic suspension 100 is required to provide is large. When the vehicle body vibration amplitude is small, the thrust force that the electromagnetic suspension 100 is required to provide is small. Thus, at least part of the stators 11 are independently controlled, and the electromagnetic suspension 100 can have proper thrust by changing the number of the stators 11 electrified in the stator assembly 1, so that the electromagnetic suspension 100 can better meet the integral vibration reduction requirement, and a better vibration reduction effect is realized. Meanwhile, when the vibration amplitude of the vehicle body is smaller, the thrust required to be provided by the electromagnetic suspension 100 is smaller, and the number of the electrified stators 11 can be reduced, so that the energy consumption of the electromagnetic suspension 100 can be reduced, and the whole electromagnetic suspension is more energy-saving.
For example, when the thrust force provided by the electromagnetic suspension 100 is required to be larger, all or most of the stators 11 can be energized, that is, the number of the energized stators 11 is increased, so that the linear motor unit 10 has larger thrust force, and a better vibration reduction effect on the vehicle body is realized; when the thrust force provided by the electromagnetic suspension 100 is required to be smaller, a small part of the stators 11 can be electrified, namely, the number of the electrified stators 11 is reduced, so that the linear motor unit 10 has smaller thrust force, a better vibration reduction effect on a vehicle body can be ensured, and the whole energy consumption of the linear motor unit 10 can be reduced.
The elastic unit 20 is connected to the linear motor unit 10. The elastic unit 20 can support the vehicle body while attenuating a portion of vibration transmitted from the wheel to the vehicle body. The elastic unit 20 is connected with the linear motor unit 10, so that the electromagnetic suspension 100 has better vibration damping effect on the vehicle body. And the damping effect of the linear motor unit 10 on the elastic unit 20 can be conveniently achieved, and the vibration amplitude of the elastic unit 20 is reduced.
According to the electromagnetic suspension 100 of the embodiment of the invention, by arranging a plurality of stators 11 and a plurality of movers 21, and forming one sub-linear motor 3 by each pair of stators 11 and movers 21, the linear motor unit 10 can be provided with a plurality of sub-linear motors 3, the plurality of sub-linear motors 3 can increase the thrust of the whole linear motor unit 10 and expand the thrust range of the whole linear motor, so that the vibration reduction effect of the electromagnetic suspension 100 on a vehicle can be improved, and the stability of the vehicle is improved.
According to some embodiments of the present invention, referring to fig. 2-3, each stator 11 is independently controlled. When the linear motor unit 10 is operated, the energization and the de-energization of each stator 11 can be controlled, so that the thrust range of the electromagnetic suspension 100 as a whole can be increased. When the linear motor unit 10 works, the working state of each stator 11 can be reasonably controlled according to the vibration amplitude of the vehicle body, so that the electromagnetic suspension 100 is provided with proper thrust to reduce the vibration amplitude, the integral vibration reduction requirement is met, and the electromagnetic suspension 100 is ensured to have a good vibration reduction effect on the vehicle body.
According to some embodiments of the present invention, referring to fig. 2 to 3, the sub-linear motor 3 is in a flat plate shape, so that the sub-linear motor 3 has the advantages of larger thrust and high precision, and has a simple structure, and the extension of the movement stroke is more convenient. Meanwhile, the whole occupied space of the sub linear motor 3 is smaller, and the structure is more compact.
According to some embodiments of the present invention, referring to fig. 2-3, the stator assembly 1 includes a housing 12 and a plurality of stators 11, both the stators 11 and the mover 21 are disposed in the housing 12, the housing 12 can protect the stators 11 and the mover 21 from sundries falling between the stators 11 and the mover 21, and damage to the sub-linear motor 3 is avoided, so that the normal use of the linear motor unit 10 as a whole can be ensured. The stator 11 is connected to the housing 12. Thus, when the sub-linear motor 3 is operated, the stator 11 can be integrally fixed, thereby facilitating the movement of the driving mover 21.
The axial direction of the housing 12 extends in the up-down direction, and the plurality of sub-linear motors 3 are arranged in the circumferential direction of the housing 12. Thus, on the one hand, the internal structure of the shell 12 can be more compact, and the whole space of the whole vehicle occupied by the shell 12 is smaller. On the other hand, the sub-linear motor 3 can conveniently adjust the height of the vehicle body relative to the wheels along the up-down direction, so that the vibration reduction effect of the electromagnetic suspension 100 on the vehicle body can be ensured.
For example, in the embodiment of the present invention, the upper end of the linear motor unit 10 is provided with a mounting flange 4, and the mounting flange 4 is connected to the vehicle body by bolts, thereby fixing the linear motor unit 10 with respect to the vehicle body. The stator assembly 1 may be connected to the mounting flange 4 by a housing 12 so that the stator assembly 1 may be fixed relative to the vehicle body.
According to some embodiments of the present invention, referring to fig. 2 to 3, the plurality of sub-linear motors 3 are arranged in a polygonal shape, so that the electromagnetic suspension 100 can bear forces in all directions during the running process of the vehicle, the overall structure of the electromagnetic suspension 100 is more stable, and the stability of the electromagnetic suspension 100 is improved.
According to some embodiments of the present invention, referring to fig. 3, the number of sub-linear motors 3 is three, so that a range of a large thrust of the linear motor unit 10 can be ensured, and the vibration reduction effect of the electromagnetic suspension 100 on the whole vehicle is better. But also the whole cost is lower, and the cost is saved. The three sub linear motors 3 are arranged in a triangle shape, so that the structural strength and rigidity of the linear motor unit 10 can be enhanced, and the stability of the linear motor unit 10 can be improved.
According to some embodiments of the present invention, referring to fig. 2-3, the stator 11 is in a flat plate shape, which is convenient for arranging and installing the stator 11, so that the overall structure is more compact, and the reasonable utilization of the overall space is facilitated. When the stator 11 is in a flat plate shape, the mover 21 may have other shapes, and the movement of the mover 21 may be realized under the magnetic force between the stator 11 and the mover 21. For example, the projected shape of the mover 21 on the horizontal plane may be an arc shape, or the mover 21 may be a cylinder shape and other shapes.
According to some embodiments of the present invention, referring to fig. 2-3, the mover 21 is in a flat plate shape, so that the stress area of the mover 21 is larger, and thus the mover 21 receives a larger magnetic force from the stator 11, and the vibration reduction effect of the electromagnetic suspension 100 is ensured. When the mover 21 is in a flat plate shape, the stator 11 may have other shapes, and the movement of the mover 21 may be realized under the magnetic force between the stator 11 and the mover 21. For example, the projected shape of the stator 11 on the horizontal plane may be an arc shape, or the stator 11 may be a cylindrical shape, as well as other shapes.
According to some embodiments of the present invention, referring to fig. 2-3, the stator 11 and the mover 21 are both in a flat plate shape, which is convenient for arranging and installing the stator 11 and the mover 21, so that the overall structure of the sub-linear motor 3 is more compact, the area of the interaction of the magnetic force between the stator 11 and the mover 21 is larger, the mover 21 receives the magnetic force from the stator 11 is larger, and the vibration reduction effect of the electromagnetic suspension 100 is better.
According to some embodiments of the present invention, referring to fig. 2-3, the stator 11 of the sub-linear motor 3 is disposed parallel to and opposite to the corresponding mover 21, so that the distances between the positions of the mover 21 facing the stator 11 and the positions of the stator 11 facing the mover 21 are the same, so that the stress of the whole mover 21 is more uniform when the sub-linear motor 3 works, and the stability of the movement of the mover 21 can be improved.
According to some embodiments of the invention, referring to fig. 1-3, the mover assembly 2 further comprises: the mounting member 22, a plurality of movers 21 are all provided to the mounting member 22, and the mounting member 22 is adapted to be connected to a wheel. For example, in the embodiment of the present invention, the upper end of the linear motor unit 10 is provided with a mounting flange 4, and the mounting flange 4 is connected to the vehicle body by bolts. The stator assembly 1 comprises a housing 12 and a plurality of stators 11, the housing 12 of the stator assembly 1 being connected to the vehicle body by means of the mounting flange 4. For example, the mounting member 22 is coupled to the brake 40 of the wheel via the linkage 30 such that the mounting member 22 is coupled to the wheel.
Therefore, the plurality of movers 21 are arranged on the mounting piece 22, the mounting piece 22 is suitable for being connected with the wheel, the plurality of movers 21 can be integrated on the mounting piece 22, the mounting of the plurality of movers 21 is facilitated, and all the movers 21 are conveniently connected with the wheel through the mounting piece 22. When the stator 11 is fixed relative to the vehicle body and the sub linear motor 3 works, current flows through the stator 11, so that interaction magnetic force is generated between the stator 11 and the rotor 21, the rotor 21 moves under the action of the magnetic force, and the motion of the rotor 21 drives the mounting piece 22 to move. The mounting piece 22 is connected with the wheels, and the wheels can move relative to the vehicle body due to the movement of the mounting piece 22, so that the distance between the vehicle body and the wheels can be adjusted, the vibration reduction effect of the linear motor unit 10 on the vehicle body as a whole can be realized, and the trafficability of the vehicle in the running process can be improved.
According to some embodiments of the present invention, referring to fig. 3, the plurality of movers 21 are arranged along the circumferential direction of the mounting member 22, so that the plurality of movers 21 can be connected with the mounting member 22, and the overall structure of the mover assembly 2 can be made more compact, thereby making the mover assembly 2 occupy less overall space.
According to some embodiments of the present invention, referring to fig. 2 to 3, the outer circumferential surface of the mounting member 22 has a plurality of mounting surfaces 221 arranged along the circumferential direction of the mounting member 22, the mounting surfaces 221 are planar, the number of the mounting surfaces 221 is the same as and corresponds to the number of the movers 21 one by one, and the movers 21 are mounted and fixed to the corresponding mounting surfaces 221. For example, the mover 21 is flat, the mounting surface 221 is flat, so that the contact area between the mover 21 and the mounting surface 221 is large, and the mover 21 is conveniently fixed to the mounting surface 221, thereby improving the safety and stability of the mover 21 when the sub-linear motor 3 is operated. The mover 21 is in one-to-one correspondence with the mounting surfaces 221 in position and number, so that the connection of the mover 21 and the mounting member 22 can be made more stable, and the overall movement of the linear motor unit 10 can be made more reliable.
According to some embodiments of the present invention, referring to fig. 3, the number of the movers 21 is three, so that a range of a large thrust of the linear motor unit 10 can be ensured, and the vibration reduction effect of the electromagnetic suspension 100 on the whole vehicle is better. But also the whole cost is lower, and the cost is saved. The mounting surfaces 221 are three, and the cross section of the mounting member 22 is triangular. By the arrangement, on one hand, the mounting piece 22 can be stressed in all directions, and when a single or a plurality of movers 21 move, the mounting piece 22 can move under the action of the movers 21. On the other hand, the cross section of the mounting piece 22 is triangular, so that the overall structural strength and rigidity of the mounting piece 22 can be enhanced, and the safety and stability of the mounting piece 22 are ensured.
According to some embodiments of the invention, referring to fig. 2-3, electromagnetic suspension 100 further comprises: the guide rod 5, the guide rod 5 extends along the up-down direction, the mounting piece 22 is formed with a guide groove 222 extending along the up-down direction, one end of the guide rod 5 is connected with the stator assembly 1, the other end is a free end, and the other end of the guide rod 5 is positioned in the guide groove 222. One end of the guide rod 5 is connected to the stator assembly 1, and can be fixed relative to the vehicle body by the stator assembly 1. The other end of the guide bar 5 is positioned in the guide groove 222 of the mounting member 22 and is engaged with the guide groove 222, so that the mounting member 22 can be guided to move the mounting member 22 in the up-down direction along the guide bar 5.
When the linear motor unit 10 works, the mover 21 of the mover assembly 2 moves under the action of the stator assembly 1, and the mounting member 22 can move together under the driving of the mover 21. Since the other end of the guide bar 5 is located in the guide groove 222 of the mount 22, the mount 22 can be moved in the up-down direction along the guide bar 5. The stator assembly 1 is fixed relative to the vehicle body, the mounting piece 22 is connected with the vehicle wheels, and the distance between the vehicle body and the vehicle wheels can be adjusted by moving the mounting piece 22 in the up-down direction, so that the height of the vehicle body relative to the vehicle wheels can be changed, and the vibration reduction effect of the electromagnetic suspension 100 on the whole vehicle body is better realized.
According to some alternative embodiments of the present invention, referring to fig. 1 to 3, the elastic unit 20 includes a spring 61, and the spring 61 is sleeved on the outer circumferential side of the linear motor unit 10, so that the overall space of the electromagnetic suspension 100 can be more compact, the space occupied by the electromagnetic suspension 100 in the up-down direction is smaller, and the overall space utilization is improved. The upper end of the spring 61 is connected to the stator assembly 1, and the lower end of the spring 61 is connected to the mover assembly 2. Since the stator assembly 1 is connected to the vehicle body, the mover assembly 2 is connected to the vehicle wheels. Thus, the upper end of the spring 61 may be coupled to the vehicle body through the stator assembly 1, and the lower end of the spring 61 may be coupled to the wheel through the mover assembly 2. The springs 61 can thereby support the vehicle body and can dampen the vibrations transmitted to the vehicle body by portions of the wheels.
When the vehicle is traveling on a flat road surface, the linear motor unit 10 may be deactivated, the body being supported by the springs 61, and vibrations transmitted to the body by the wheels of the portion being damped. The small vibration of the wheels in the up-down direction can drive the rotor assembly 2 to move up and down, so that the magnetic induction wire of the rotor assembly 2 continuously cuts the electromagnetic coil in the stator assembly 1 to generate partial current, and the energy of the vibration can be partially converted into electric energy, thereby realizing the energy-saving effect.
When the vehicle is traveling on an uneven road surface, the linear motor unit 10 operates, and the springs 61 act as supports for the vehicle body. The linear motor changes the moving direction and the thrust of the rotor assembly 2 according to the up-and-down vibration amplitude and direction of the wheels, and changes the moving direction and the thrust of the rotor assembly 2 according to the current direction and the current magnitude continuously, so that the direction of the thrust is opposite to the vibration direction of the wheels, and the electromagnetic suspension 100 can realize the vibration attenuation of the wheels transmitted to the vehicle body integrally, and the vehicle is more stable and safer in the running process.
Referring to fig. 1-3, according to some embodiments of the present invention, electromagnetic suspension 100 further includes: an upper support 62 and a lower support 63, the upper support 62 is provided at the upper end of the stator assembly 1, the lower support 63 is provided at the lower end of the mover assembly 2, the upper end of the spring 61 is connected to the upper support 62, and the lower end of the spring 61 is connected to the lower support 63. The spring 61 is installed between the upper support 62 and the lower support 63, and the upper support 62 and the lower support 63 can fix and support the spring 61, thereby facilitating the connection of the spring 61 with the stator assembly 1 and the mover assembly 2. For example, the upper support 62 may be coupled to the housing 12 of the stator assembly 1 by fasteners, and the lower support 63 may be coupled to the mounting member 22 of the mover assembly 2 by fasteners, welding, or the like.
According to a second aspect of the present invention, a vehicle includes: the electromagnetic suspension 100 according to the embodiment of the first aspect of the present invention described above.
According to the vehicle of the present invention, by providing the electromagnetic suspension 100 described above, by providing the plurality of stators 11 and the plurality of movers 21 and configuring one sub-linear motor 3 for each pair of stators 11 and movers 21, the linear motor unit 10 can be provided with the plurality of sub-linear motors 3, the plurality of sub-linear motors 3 can increase the thrust of the entire linear motor unit 10, and the thrust range of the entire linear motor can be enlarged, so that the vibration damping effect of the electromagnetic suspension 100 on the vehicle can be improved, and the stability of the vehicle can be improved.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (16)
1. An electromagnetic suspension, comprising:
the linear motor unit comprises a stator assembly and a rotor assembly, one of the stator assembly and the rotor assembly is suitable for being connected with a vehicle body, the other one of the stator assembly and the rotor assembly is suitable for being connected with a vehicle wheel, the stator assembly comprises a plurality of stators, the rotor assembly comprises a plurality of rotors, the number of the rotors is the same as that of the stators and corresponds to that of the stators one by one, each pair of the stators and the rotors form a sub linear motor, and at least part of the stators are independently controlled;
and the elastic unit is connected with the linear motor unit.
2. The electromagnetic suspension of claim 1, wherein each of the stators is independently controlled.
3. The electromagnetic suspension of claim 1, wherein the sub-linear motor is planar.
4. The electromagnetic suspension according to claim 1, wherein the stator assembly comprises a housing and a plurality of stators, the stators and the mover are all disposed in the housing, the stators are connected with the housing, the axial direction of the housing extends in the up-down direction, and the plurality of sub-linear motors are arranged in the circumferential direction of the housing.
5. The electromagnetic suspension of claim 4, wherein a plurality of said sub-linear motors are arranged in a polygonal configuration.
6. The electromagnetic suspension of claim 5, wherein the number of sub-linear motors is three, and the three sub-linear motors are arranged in a triangle.
7. The electromagnetic suspension of claim 1, wherein the stator is planar; and/or the mover is in a flat plate shape.
8. The electromagnetic suspension according to claim 7, wherein the stator of the sub-linear motor is disposed parallel and opposite to the corresponding mover.
9. The electromagnetic suspension of claim 1, wherein the mover assembly further comprises: the mounting piece, a plurality of the active cell is all located the mounting piece, the mounting piece is suitable for with the wheel links to each other.
10. The electromagnetic suspension according to claim 9, wherein a plurality of the movers are arranged along a circumferential direction of the mount.
11. The electromagnetic suspension according to claim 10, wherein the outer peripheral surface of the mount has a plurality of mount surfaces arranged in the circumferential direction of the mount, the mount surfaces being flat surfaces, the number of the mount surfaces being the same as the number of the movers and being in one-to-one correspondence, the movers being mounted and fixed to the corresponding mount surfaces.
12. The electromagnetic suspension according to claim 11, wherein the number of the movers is three, the number of the mounting surfaces is three, and the cross section of the mounting member is triangular.
13. The electromagnetic suspension of claim 9, further comprising: the guide rod extends along the upper and lower direction, the mounting is formed with the guide slot that extends along the upper and lower direction, the one end of guide rod with stator module links to each other and the other end is the free end, the other end of guide rod is located in the guide slot.
14. The electromagnetic suspension according to any one of claims 1 to 13, wherein the elastic unit includes a spring which is sleeved on an outer peripheral side of the linear motor unit, an upper end of the spring is connected to the stator assembly, and a lower end of the spring is connected to the mover assembly.
15. The electromagnetic suspension of claim 14, further comprising: the upper support is arranged at the upper end of the stator assembly, the lower support is arranged at the lower end of the rotor assembly, the upper end of the spring is connected with the upper support, and the lower end of the spring is connected with the lower support.
16. A vehicle, characterized by comprising: the electromagnetic suspension according to any one of claims 1-15.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310363454.4A CN117656735A (en) | 2023-03-31 | 2023-03-31 | Electromagnetic suspension and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310363454.4A CN117656735A (en) | 2023-03-31 | 2023-03-31 | Electromagnetic suspension and vehicle |
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| CN117656735A true CN117656735A (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310363454.4A Pending CN117656735A (en) | 2023-03-31 | 2023-03-31 | Electromagnetic suspension and vehicle |
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Citations (6)
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|---|---|---|---|---|
| JPH08130862A (en) * | 1994-11-02 | 1996-05-21 | Sumitomo Special Metals Co Ltd | Moving magnet linear actuator |
| CN103847454A (en) * | 2014-01-16 | 2014-06-11 | 江苏大学 | Electromagnetic damping vibration reduction device for vehicle suspension |
| CN104811011A (en) * | 2015-05-26 | 2015-07-29 | 哈尔滨工业大学 | Cylindrical type transverse magnetic-field permanent-magnet flux-switching linear motor |
| CN105774525A (en) * | 2016-03-04 | 2016-07-20 | 重庆大学 | Multistage stator and rotor combined type electric wheel assembly |
| CN110182013A (en) * | 2019-05-20 | 2019-08-30 | 江苏大学 | A kind of two-freedom electromagnetism feed energy suspension based on double winding mixed magnetic circuit linear rotation permanent magnet motor actuator |
| CN115622302A (en) * | 2022-10-26 | 2023-01-17 | 浙江大学 | Multi-rotor permanent magnet linear motor with self-powered rotors and cooperative control method thereof |
-
2023
- 2023-03-31 CN CN202310363454.4A patent/CN117656735A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08130862A (en) * | 1994-11-02 | 1996-05-21 | Sumitomo Special Metals Co Ltd | Moving magnet linear actuator |
| CN103847454A (en) * | 2014-01-16 | 2014-06-11 | 江苏大学 | Electromagnetic damping vibration reduction device for vehicle suspension |
| CN104811011A (en) * | 2015-05-26 | 2015-07-29 | 哈尔滨工业大学 | Cylindrical type transverse magnetic-field permanent-magnet flux-switching linear motor |
| CN105774525A (en) * | 2016-03-04 | 2016-07-20 | 重庆大学 | Multistage stator and rotor combined type electric wheel assembly |
| CN110182013A (en) * | 2019-05-20 | 2019-08-30 | 江苏大学 | A kind of two-freedom electromagnetism feed energy suspension based on double winding mixed magnetic circuit linear rotation permanent magnet motor actuator |
| CN115622302A (en) * | 2022-10-26 | 2023-01-17 | 浙江大学 | Multi-rotor permanent magnet linear motor with self-powered rotors and cooperative control method thereof |
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