Electromagnetic, eddy current damping collaborative vibration reduction and energy recovery integrated device

Abstract

The application provides an electromagnetic and eddy current damping cooperative vibration reduction and energy recovery integrated device, which comprises a vibrating body provided with a first magnet, a second magnet and a third magnet, a fixed body provided with an electromagnet and a copper plate, the change of magnetic force between the electromagnet and the first magnet is controlled to realize the vibration reduction control of the vibrating body, the vibrating body can drive the second magnet to move when vibrating, so that the magnetic induction intensity through the copper plate changes, the internal part of the copper plate forms an eddy current effect to generate a damping force and act on the vibrating body, and an energy recovery component can store electric energy. The electromagnetic damping and the eddy current damping and energy recovery are integrated, the effect of electromagnetic damping and eddy current damping cooperative vibration reduction is realized, electric energy recovery and reuse are simultaneously performed, and the device has the advantages of low manufacturing cost, compact structure, no mechanical contact and easy popularization and application.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction control and energy recovery technology, specifically to an integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery. Background Technology

[0002] With the continuous advancement of science and technology, the application of mechanical equipment in various fields has become crucial. However, the vibration and energy waste generated during the operation of mechanical equipment have always been pressing problems that need to be addressed. To solve these problems, researchers have begun to explore the potential of electromagnetic and eddy current damping technologies, both of which can effectively reduce vibration and recover energy.

[0003] Electromagnetic damping refers to using electromagnetic force to dissipate the energy of vibrations, thereby achieving vibration reduction. Compared with traditional mechanical vibration reduction methods, electromagnetic damping has a higher damping effect and a faster response speed. Furthermore, electromagnetic damping allows for more precise vibration reduction control by adjusting the magnitude and direction of the damping force.

[0004] Eddy current damping is a technique that uses eddy currents to dissipate the energy of vibrations. Eddy currents are the phenomenon where a change in a magnetic field generates a current in a conductor in the absence of an external power source. In eddy current damping, an alternating current is passed through a coil, causing the coil to generate an alternating magnetic field. When another coil approaches this coil and moves within this magnetic field, eddy currents are generated, thereby dissipating the energy of the vibration.

[0005] While both electromagnetic damping and eddy current damping are effective in vibration reduction, they are somewhat competitive. Using both techniques simultaneously may result in a canceling effect, thus reducing the overall vibration reduction efficiency. Therefore, it is necessary to study the synergistic effect of these two techniques to fully leverage their respective advantages and achieve better vibration reduction results.

[0006] Besides vibration reduction, energy recovery is another hot research topic. During the operation of mechanical equipment, the energy generated by vibration is often wasted. If this energy can be recovered and utilized, it can not only reduce the energy consumption of the equipment but also achieve energy recycling. Therefore, researchers have begun to explore how to combine electromagnetic damping and eddy current damping technologies with energy recovery technologies to achieve efficient energy utilization. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the purpose of this invention is to provide an integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery.

[0008] An integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery, provided by the present invention, includes:

[0009] The vibrating body is equipped with a first magnet and a third magnet;

[0010] A fixed body is provided with an electromagnet and a copper plate. By controlling the magnitude and / or direction of the current flowing through the electromagnet, the magnetic force between the electromagnet and the first magnet is changed, thereby achieving vibration reduction control of the vibrating body.

[0011] The second magnet, when the vibrating body vibrates, can drive the second magnet to move, thereby causing the second magnet to move relative to the copper plate when the vibrating body vibrates, thus causing the magnetic induction intensity passing through the copper plate to change, and an eddy current effect to be formed inside the copper plate, thereby generating a damping force that acts on the vibrating body;

[0012] An energy recovery component that can store electrical energy when the third magnet vibrates in sync with the vibrating body.

[0013] Preferably, the vibrating body is in contact with or not in contact with the stationary body.

[0014] Preferably, there are multiple third magnets, and the multiple third magnets are arranged in an opposite-pole array or a Halbach array.

[0015] Preferably, a fourth magnet is provided between two adjacent induction coils.

[0016] Preferably, a plurality of the second magnets are disposed on the vibrating body; or

[0017] Multiple second magnets are mounted on the gear, and the vibrating body is provided with a rack that meshes with the gear. When the vibrating body vibrates, it can drive the rack to drive the gear to rotate, thereby causing the magnetic induction intensity passing through the copper plate to change.

[0018] Preferably, a plurality of the second magnets are arranged on the gear in a symmetrical or asymmetrical manner.

[0019] Preferably, the energy recovery component includes a load and an induction coil arranged circumferentially along the third magnet. When the third magnet vibrates following the vibrating body, it causes an induced current to be generated in the induction coil, which in turn causes the load circuit to convert the energy into electrical energy for storage.

[0020] Preferably, the device further includes a sensor and a controller. The sensor is mounted on the vibrating body and is connected to the controller and the electromagnet for signal transmission. The controller actively controls the vibration and impact to achieve precise and proactive control.

[0021] Preferably, the electrical energy required by the electromagnet comes part or all of the electrical energy recovered by the energy recovery component.

[0022] Preferably, a buffer spring is provided between the vibrating body and the stationary body.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This invention integrates electromagnetic damping, eddy current damping, and energy recovery into a device for absorbing vibrations by electromagnetic force. On the one hand, it achieves the synergistic vibration reduction effect of electromagnetic damping and eddy current damping. On the other hand, the energy recovery technology can convert the energy generated during the vibration of mechanical equipment into electrical energy, realizing the reuse of energy. It has the characteristics of high efficiency, practicality, and adjustability, and also has the advantages of low manufacturing cost, compact structure, no mechanical contact, and easy promotion and application. Attached Figure Description

[0025] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the structure of Example 1;

[0027] Figure 2 This is a schematic diagram of the structure of Example 3;

[0028] Figure 3 This is a schematic diagram of the structure of Example 2;

[0029] Figure 4 This is a schematic diagram of the structure of Example 4;

[0030] Figure 5 This is a schematic diagram of the energy recovery component in Example 1;

[0031] Figure 6 This is a schematic diagram of the energy recovery component in Example 3;

[0032] Figure 7 A schematic diagram illustrating the principle of precise active control of vibration and shock.

[0033] Figure 8 This is a schematic diagram of a gear and rack assembly.

[0034] The diagram shows:

[0035] Vibrating body 1

[0036] First magnet 11

[0037] Second magnet 12

[0038] Third magnet 13

[0039] Fourth Magnet 14

[0040] Rack 15

[0041] Sensor 16

[0042] Controller 17

[0043] Gear 18

[0044] Fixed shaft 181

[0045] Fixture 2

[0046] Electromagnet 21

[0047] 22 copper coins

[0048] Induction coil 31

[0049] Load 32

[0050] Buffer spring 4 Detailed Implementation

[0051] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0052] Example 1:

[0053] This invention provides an integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery, such as... Figure 1 As shown, the device includes a vibrating body 1, a fixed body 2, and an energy recovery assembly. The vibrating body 1 is equipped with a first magnet 11, a second magnet 12, and a third magnet 13. The fixed body 2 is equipped with an electromagnet 21 and a copper plate 22. By controlling the magnitude and / or direction of the current supplied to the electromagnet 21, the magnetic force between the electromagnet 21 and the first magnet 11 is changed, thereby achieving vibration reduction control of the vibrating body 1.

[0054] Specifically, when the vibrating body 1 vibrates, it can drive the second magnet 12 to move up and down, thereby causing the second magnet 12 to move relative to the copper plate 22 when the vibrating body 1 vibrates. This causes the magnetic induction intensity passing through the copper plate 22 to change, and an eddy current effect is formed inside the copper plate 22, which in turn generates a damping force that acts on the vibrating body 1, thus achieving the vibration reduction effect of the vibrating body 1.

[0055] The energy recovery assembly of this invention includes a load 32 and an induction coil 31 arranged circumferentially along the third magnet 13, such as Figure 5As shown, when the third magnet 13 vibrates following the vibrator 1, it induces a current in the induction coil 31. This induced current travels through the circuit to the load 32, whereby the load 32 circuit converts it into electrical energy for storage, achieving both vibration suppression and energy recovery. During operation, the axial movement of the vibrator 1 causes a change in magnetic flux, generating an induced current in the induction coil 31. This current can be converted into electrical energy and stored for later use through the external load circuit. Compared to traditional electromagnetic energy recovery devices, this invention offers higher energy recovery efficiency and a longer service life. This electromagnetic energy recovery device is suitable not only for various applications requiring vibration energy recovery, such as vehicle braking, suspension damping, and aircraft landing gear, but also for applications in power storage and distributed energy systems. Due to its high efficiency, durability, and adjustability, this invention has significant practical value and social benefits in addressing energy shortages and reducing environmental pollution.

[0056] In this embodiment, there are multiple third magnets 13, which are arranged circumferentially along the vibrator 1 and in a structure of opposite poles facing each other, such as... Figure 1 , Figure 5 As shown, two adjacent third magnets 13 are arranged at intervals of d, and the size of d can be flexibly arranged according to the actual scene.

[0057] This implementation also includes sensor 16 and controller 17, such as Figure 7 As shown, sensor 16 is mounted on vibrating body 1 and is connected to controller 17 and electromagnet 21. Controller 17 actively controls the vibration impact to achieve precise active control. Specifically, this invention generates active force through electromagnetic force to achieve precise active control of vibration impact. Electromagnet 21 generates a magnetic field, and controller 17 controls the current flowing through the coil of electromagnet 21 based on the feedback signal from sensor 16, thereby changing the magnetic field strength and direction of electromagnet 21, ultimately achieving active control. Compared with traditional mechanical actuation, this invention has higher precision and response speed. Because electromagnetic force can be precisely controlled, it enables fine adjustments to the actuation force, making it suitable for high-precision, high-sensitivity applications.

[0058] In this invention, the electromagnet 21 requires part or all of its electrical energy from the energy recovery component. In practical applications, external electrical energy is used when the energy recovered by the energy recovery component is insufficient. Since electromagnetic force is converted from electrical energy, and electrical energy can be obtained from the upper energy recovery component, the device has low external energy requirements and is energy-saving and environmentally friendly. It also avoids the noise and vibration caused by friction in traditional mechanical power generation. The device has a wide range of applications, including but not limited to robotics, automation equipment, and aerospace. For example, in robotics, it can be used to achieve precise movement and attitude adjustment of robots; in aerospace, it can be used to achieve precise control and attitude adjustment of spacecraft, greatly improving the device's versatility and practicality.

[0059] In this embodiment, a buffer spring 4 is provided between the vibrating body 1 and the fixed body 2. The buffer spring 4 enables the vibrating body 1 and the fixed body 2 to adopt an elastic contact connection. By setting the buffer spring 4 with the combined force, the buffer spring 4 can achieve the vibration reduction and damping effect on the vibrating body 1.

[0060] It should be noted that the fixing body 2 can take various structural forms, such as Figure 1 In order to achieve the purpose of vibration reduction, the fixed body 2 can also adopt other structural forms. In order to achieve the purpose of vibration reduction in different scenarios, the structure of the vibrating body 1 can be extended. For example, if the vibrating part is not easy to suppress vibration, other structures can be connected to the vibrating body 1 so that the other structures can cooperate with the fixed body 2 to suppress vibration, and the effect of the present invention can also be achieved. The other structures mentioned here can be column structures, tubular structures, barrel structures, plate structures, etc., or combinations of multiple structures, so that the device in the present invention has better versatility.

[0061] The electromagnetic and eddy current damping synergistic energy dissipation technology of this invention combines the advantages of electromagnetic damping and eddy current damping to achieve a more efficient and stable energy dissipation effect. When the structure vibrates under external excitation, electromagnetic damping and eddy current damping work simultaneously to generate damping force to suppress the vibration of the structure. At the same time, during the energy absorption process of the structure, the two dampers also work together to absorb energy, generate induced current through electromagnetic induction, and form usable electrical energy in the external load circuit; through the external copper guide plate, the relative motion of the permanent magnet generates eddy current, generates damping force, and dissipates it in the form of heat on the copper plate 22. This invention achieves a more efficient and stable energy dissipation effect by combining the advantages of electromagnetic damping and eddy current damping; the electromagnetic energy recovery can be used for active regulation power supply of electromagnetic force and power supply of wireless sensing circuits to realize active and passive integrated vibration reduction control and structural self-health detection, which has the advantages of low manufacturing cost, compact structure, no mechanical contact, and easy promotion and application.

[0062] Example 2:

[0063] This embodiment is a preferred example of Embodiment 1. The difference between this embodiment and Embodiment 1 is that a fourth magnet 14 is provided between two adjacent induction coils 31, such as... Figure 3 As shown, by setting a fourth magnet 14, during the vibration of the vibrator 1, the repulsive force and / or attractive force between the third magnet 13 and the fourth magnet 14 cause a tangential force between the vibrator 1 and the fixed body 2, which has the effect of assisting vibration reduction.

[0064] Example 3:

[0065] This embodiment is a variation of Embodiment 1. The difference between this embodiment and Embodiment 1 is that the multiple third magnets 13 are arranged in a Halbach array structure, such as... Figure 2 , Figure 6 As shown, multiple second magnets 12 are simultaneously mounted on the gear 18, such as... Figure 8 As shown, the vibrating body 1 is equipped with a rack 15 that meshes with the gear 18. When the vibrating body 1 vibrates, it drives the rack 15 to rotate the gear 18. The second magnet 12 on the gear 18 also rotates with the gear 18, which causes a change in the magnetic induction intensity passing through the copper plate 22. This creates an eddy current effect inside the copper plate 22, generating a damping force that acts on the vibrating body 1, thus reducing the vibration of the vibrating body 1. The gear 18 is mounted on a fixed shaft 181 and can rotate around the fixed shaft 181. The fixed shaft 181 can be fixed to the fixed body 2 by a connector. A ring array of permanent magnets is symmetrically installed on the end face of the gear 18. When the gear 18 rotates, the permanent magnet array rotates accordingly, causing a drastic change in the surrounding magnetic field. This generates eddy currents on the copper plate 22, forming a damping force, which is dissipated through heat. The magnitude of the eddy current damping can be adjusted by changing the transmission ratio of the gear 22 and the rack 15.

[0066] It should be noted that the arrangement of the second magnet 12 on the gear 18 is preferably that multiple second magnets 12 are arranged in an asymmetrical manner on the gear 18, but in some scenarios they can also be arranged in a symmetrical manner.

[0067] Example 4:

[0068] The difference between this embodiment and embodiment 3 is that a fourth magnet 14 is provided between two adjacent induction coils 31, such as... Figure 4 As shown, by setting a fourth magnet 14, during the vibration of the vibrator 1, the repulsive force and / or attractive force between the third magnet 13 and the fourth magnet 14 cause a tangential force between the vibrator 1 and the fixed body 2, which has the effect of assisting vibration reduction.

[0069] Example 5:

[0070] This embodiment is a variation of Embodiment 1. Unlike Embodiment 1, the vibrating body 1 and the fixed body 2 are connected in a non-contact manner, and vibration suppression is achieved solely through magnetic force.

[0071] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0072] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery, characterized in that, include: The vibrating body (1) is provided with a first magnet (11) and a third magnet (13). The fixed body (2) is provided with an electromagnet (21) and a copper plate (22). By controlling the magnitude and / or direction of the current passed through the electromagnet (21), the change of magnetic force between the electromagnet (21) and the first magnet (11) is realized, thereby realizing the vibration reduction control of the vibrating body (1). The second magnet (12) is driven to move when the vibrating body (1) vibrates, thereby causing the second magnet (12) to move relative to the copper plate (22) when the vibrating body (1) vibrates, thus causing the magnetic induction intensity passing through the copper plate (22) to change, and an eddy current effect is formed inside the copper plate (22), thereby generating a damping force and acting on the vibrating body (1). The energy recovery component can store electrical energy when the third magnet (13) vibrates with the vibrating body (1). The electrical energy recovered by the energy recovery component is at least partially used to supply the electromagnet, forming an energy self-consistent closed-loop system. The energy recovery component continuously recovers electrical energy throughout the entire vibration process of the vibrating body. The electromagnet continuously performs active vibration reduction control based on the recovered electrical energy throughout the entire vibration process of the vibrating body. The electromagnet (21) requires part or all of its electrical energy from the electrical energy recovered by the energy recovery component; The energy recovery assembly includes a load (32) and an induction coil (31) arranged circumferentially along the third magnet (13). When the third magnet (13) vibrates with the vibrating body (1), an induced current is generated in the induction coil (31), which in turn causes the load (32) circuit to convert into electrical energy for storage. It also includes a sensor (16) and a controller (17). The sensor (16) is installed on the vibrating body (1). The sensor (16) is connected to the controller (17) and the electromagnet (21) respectively. The controller (17) actively controls the vibration impact to achieve precise active control.

2. The integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery according to claim 1, characterized in that, The vibrating body (1) may be in contact with or not in contact with the fixed body (2).

3. The integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery according to claim 1, characterized in that, The number of the third magnets (13) is multiple, and the multiple third magnets (13) are arranged in opposite pole relative array or Halbach array.

4. The integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery according to claim 3, characterized in that, A fourth magnet (14) is provided between two adjacent induction coils (31).

5. The integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery according to claim 1, characterized in that, A plurality of the second magnets (12) are disposed on the vibrator (1); or Multiple second magnets (12) are disposed on the gear (18), and the vibrating body (1) is provided with a rack (15) that meshes with the gear (18). When the vibrating body (1) vibrates, it can drive the rack (15) to drive the gear (18) to rotate, thereby causing the magnetic induction intensity passing through the copper plate (22) to change.

6. The integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery according to claim 5, characterized in that, Multiple second magnets (12) are arranged on the gear (18) in a symmetrical or asymmetrical manner.

7. The integrated device for electromagnetic and eddy current damping combined with vibration reduction and energy recovery according to claim 1, characterized in that, A buffer spring (4) is provided between the vibrating body (1) and the fixed body (2).

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