Hybrid control device for vibration isolation and buffering

Abstract

The invention relates to a hybrid control device for vibration isolation and buffering, and belongs to the technical field of dampers. Comprising a cylinder body, and a first cavity used for containing magnetorheological fluid is formed in the cylinder body; the base is installed at one end of the cylinder body, a second cavity is formed in the base, and a first magnetic field generator used for forming a first magnetic field is arranged at the end, away from the cylinder body, of the second cavity; the piston rod is arranged on the cylinder body and the base in a penetrating mode, a second magnetic field generator and a first magnetic field cutter are arranged on the piston rod, the second magnetic field generator is located in the first cavity, the first magnetic field cutter is located in the second cavity, and the movement path of the first magnetic field cutter passes through the first magnetic field. The magneto-rheological damper and the eddy current brake are combined into a whole, hybrid control of vibration isolation and buffering can be achieved, the structure is compact, and the magneto-rheological eddy current brake can be applied to scenes with limited space and weight.

Description

Technical Field

[0001] The present application relates to the technical field of dampers, and in particular to a hybrid control device for vibration isolation and buffering. Background Art

[0002] At present, with the rapid development of transportation, high-speed transportation not only faces vibration problems, but also challenges accompanied by impact loads, especially some special equipment. Vibration isolation and cushioning can provide drivers with good comfort and safety. Therefore, the demand for vibration isolation and cushioning of transportation is particularly urgent.

[0003] Semi-active control equipment based on magnetorheological technology can adjust its own properties according to different excitation conditions to achieve the best vibration isolation or buffering effect, and has good applications in the fields of vibration isolation and buffering. Due to the differences in the performance required for vibration isolation and buffering, for scenarios where both functions are required, it is usually necessary to design semi-active control devices that meet the vibration isolation and buffering requirements separately, and use them in series or parallel. Vibration isolation and buffering control devices used in series or parallel occupy a relatively large space and weight, and cannot be effectively used in some driving situations where space and weight are limited. Summary of the invention

[0004] An embodiment of the present application provides a hybrid control device for vibration isolation and buffering to solve the defect in the related art that the vibration isolation and buffering control devices used in series or parallel occupy a relatively large space and weight, and cannot be effectively used in some driving situations with limited space and weight.

[0005] An embodiment of the present application provides a hybrid control device for vibration isolation and buffering, including a cylinder body, in which a first chamber for containing magnetorheological fluid is formed; a base, which is installed at one end of the cylinder body, and a second chamber is formed in the base, and a first magnetic field generator for forming a first magnetic field is provided at an end of the second chamber away from the cylinder body; a piston rod, which passes through the cylinder body and the base, and a second magnetic field generator and a first magnetic field cutter are provided on the piston rod, the second magnetic field generator is located in the first chamber, the first magnetic field cutter is located in the second chamber, and the movement path of the first magnetic field cutter passes through the first magnetic field.

[0006] In some embodiments, the second magnetic field generator includes a piston connected to the piston rod; a piston excitation coil having at least two grooves thereon, the piston excitation coil being wound on the grooves, and the winding directions of the piston excitation coils in two adjacent grooves are opposite.

[0007] In some embodiments, the first magnetic field generator includes a base excitation coil; a permanent magnet, which is distributed in multiple circumferential and axial directions along the inner wall of the second chamber, the base excitation coil is connected to the permanent magnet, and a track is formed between adjacent permanent magnets along the circumference of the inner wall of the second chamber, and the movement path of the first magnetic field cutter passes through the track.

[0008] In some embodiments, the first magnetic field cutter includes a buffer head connected to the piston rod; a brake pad, which is distributed along the buffer head along its circumferential direction, and the movement path of the brake pad passes through the track.

[0009] In some embodiments, a buffer pad is provided on the bottom wall of the second chamber.

[0010] In some embodiments, a plurality of heat dissipation holes are distributed along the circumferential direction and the axial direction on the inner wall of the second chamber, a cross beam is formed between two axially adjacent heat dissipation holes on the inner wall of the second chamber, the permanent magnet is connected to the inner wall of the cross beam, and the base excitation coil is wound between the cross beam and the permanent magnet.

[0011] In some embodiments, the magnetic poles of the permanent magnets adjacent to each other in the axial direction of the second cavity on the same side have opposite polarities, and the magnetic poles of the permanent magnets adjacent to each other in the circumferential direction of the second cavity on the sides close to each other have the same polarity.

[0012] In some embodiments, the circumferential direction of the inner wall of the second chamber is opposite to the direction of the base excitation coil wound on the permanent magnet adjacent to the axial direction.

[0013] In some embodiments, end covers are provided at both ends of the cylinder body, a through hole is provided on the end cover to fit with the piston rod in a clearance, and a sealing ring is provided on the inner wall of the through hole.

[0014] In some embodiments, the piston rod includes an upper piston rod, to which the second magnetic field generator is connected; and a lower piston rod, which is threadedly connected to the upper piston rod, to which the first magnetic field cutter is connected.

[0015] The beneficial effects of the technical solution provided by this application include:

[0016] The embodiment of the present application provides a hybrid control device for vibration isolation and buffering, which combines a magnetorheological damper and an eddy current brake into one. Through the arrangement of the cylinder body and the base, a magnetic field is generated in the first chamber of the cylinder body through the second magnetic field generator and the magnetorheological fluid. This magnetic field can affect the magnetic particles in the magnetorheological fluid, so that they are arranged in a chain structure, thereby changing the fluidity and viscosity of the magnetorheological fluid. By adjusting the intensity of the current, the performance of the magnetorheological fluid can be controlled in real time, thereby achieving vibration isolation adjustment; when subjected to a large impact load, in the second chamber of the base, when the first magnetic field cutter moves, it causes a change in magnetic flux with the first magnetic field in the first magnetic field generator, thereby generating an induced electromotive force and forming eddy currents in the conductor. The generated induced eddy currents will generate a magnetic field in the first magnetic field cutter, and interact with the first magnetic field, generating a force that hinders movement, reducing the movement speed, and achieving buffering control. This application combines magnetorheological technology and eddy current braking technology, which can not only achieve hybrid control of vibration isolation and buffering, but also has a compact structure. The overall size and mass are close to those of traditional magnetorheological dampers, and can be used in scenarios where space and weight are limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present application;

[0019] Figure 2 A schematic diagram for displaying a base provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram for showing a piston rod, a second magnetic field generator and a first magnetic field cutter provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram for showing a track provided in an embodiment of the present application;

[0022] Figure 5 A schematic diagram for showing a permanent magnet provided in an embodiment of the present application;

[0023] Figure 6 A cross-sectional schematic diagram provided for an embodiment of the present application;

[0024] Reference numerals:

[0025] 1. Cylinder body; 10. First chamber; 2. Base; 20. Second chamber; 3. Piston rod; 30. Upper piston rod; 31. Lower piston rod; 40. Piston; 41. Piston excitation coil; 50. Base excitation coil; 51. Permanent magnet; 52. Track; 60. Buffer head; 61. Brake pad; 7. Buffer pad; 80. Heat dissipation hole; 81. Crossbeam; 9. End cover; 90. First sealing ring; 91. Second sealing ring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] An embodiment of the present application provides a hybrid control device for vibration isolation and buffering, which can solve the defects that vibration isolation and buffering control devices used in series or parallel occupy a relatively large space and weight, and cannot be effectively used in some driving situations with limited space and weight.

[0028] See also Figures 1 to 6 As shown, an embodiment of the present application provides a hybrid control device for vibration isolation and buffering, including a cylinder body 1, a base 2 and a piston 40, wherein a first chamber 10 for containing magnetorheological fluid is formed in the cylinder body 1, the cylinder body 1 and the piston 40 are made of magnetic conductive material, and the remaining components are made of non-magnetic conductive material; a base 2 is installed at one end of the cylinder body 1, a second chamber 20 is formed in the base 2, and a first magnetic field generator for forming a first magnetic field is provided at one end of the second chamber 20 away from the cylinder body 1; a piston rod 3 is provided that penetrates the cylinder body 1 and the base 2, and a second magnetic field generator and a first magnetic field cutter are provided on the piston rod 3, wherein the second magnetic field generator is located in the first chamber 10, the first magnetic field cutter is located in the second chamber 20, and the movement path of the first magnetic field cutter passes through the first magnetic field.

[0029] In the present application, by connecting the cylinder body 1 and the base 2, and then inserting the piston rod 3 on the cylinder body 1 and the base 2, the second magnetic field generator is located in the first chamber 10, and the first magnetic field cutter is located in the second chamber 20. When in use, the magnetorheological fluid is contained in the first chamber 10, the piston rod 3 is inserted on the cylinder body 1 and the base 2, and the piston rod 3 passes through one end of the cylinder body 1 to connect with the external device. When the external device is subjected to vibration and impact, if the vibration and impact are small, for example, when encountering a bumpy working condition, the piston rod 3 is subjected to a load outside and starts to reciprocate. Based on the rheological properties of the magnetorheological fluid, when an external magnetic field acts, the ferromagnetic particles inside the magnetic fluid will form a chain structure and a mesh structure, which will increase the flow resistance of the liquid, that is, increase the damping force. Therefore, when the piston rod 3 moves back and forth, the second magnetic field generated by the second magnetic field generator will act on the magnetic fluid, so that the ferromagnetic particles inside it are arranged and chained, and then under the action of the second magnetic field, the magnetorheological fluid properties change, forming a large number of chain structures and mesh structures. These structures will hinder the flow of fluid, thereby generating damping force, which together with the external vibration and impact reaction force, achieves vibration isolation effect.

[0030] If the external load directly applied to the piston rod 3 is too large, the piston rod 3 will move significantly, causing the first magnetic field cutter to move into the second chamber 20. At this time, the first magnetic field cutter and the first magnetic field cause a change in magnetic flux, thereby generating an induced electromotive force and forming an eddy current in the conductor. The generation of eddy currents consumes energy, thereby forming a braking force to brake the moving object. As the eddy currents increase, the resistance will also increase, thereby reducing the moving speed of the piston rod 3 and effectively achieving a buffering effect.

[0031] The present application combines magnetorheological technology and eddy current braking principle, uses the function of magnetorheological damper to suppress vibration during vibration isolation, and uses eddy current braking technology to absorb the energy of impact load during buffering; the device is not only compact in structure, but also has good adaptability to vibration excitation and impact excitation.

[0032] In the present application, the piston rod 3 includes an upper piston rod 30, on which the second magnetic field generator is connected, and a lower piston rod 31, which is threadedly connected to the upper piston rod 30, and on which the first magnetic field cutter is connected. By dividing the piston rod 3 into the upper piston rod 30 and the lower piston rod 31, it is convenient to install the second magnetic field generator and the first magnetic field cutter on the piston rod 3, so that the piston rod 3 is convenient to be inserted into the base 2 and the cylinder body 1.

[0033] In the present application, the second magnetic field generator includes a piston 40 and a piston excitation coil 41. The piston 40 is connected to the piston rod 3; and at least two grooves are provided on the piston 40. At this time, the piston excitation coil 41 is wound on the groove, and the directions of the piston excitation coils 41 wound in the two adjacent grooves are opposite. Therefore, after the piston excitation coil 41 is energized, a second magnetic field is formed starting from the piston 40 and passing through the magnetorheological fluid, the cylinder 1, the magnetorheological fluid, and the piston 40 in sequence. Under the action of pressure, the magnetorheological fluid passes through the fixed magnetic pole, and the flow direction is perpendicular to the direction of the second magnetic field. By changing the current of the excitation coil to control the change of the magnetic field, the flow properties of the magnetorheological fluid are changed, thereby changing the damping force. Therefore, the strength of the second magnetic field can be adjusted by controlling the second magnetic field generator. The stronger the second magnetic field, the tighter the chain structure and the mesh structure inside the magnetorheological fluid, and the greater the damping force; conversely, the weaker the second magnetic field, the smaller the damping force, which effectively adapts to the change of vibration excitation.

[0034] In the present application, the first magnetic field generator includes a base excitation coil 50 and a permanent magnet 51; there are multiple permanent magnets 51 distributed along the circumferential direction and axial direction of the inner wall of the second chamber 20, and the base excitation coil 50 is connected to the permanent magnet 51; the base excitation coil 50 is an important part of the magnetic field generator, and the base excitation coil 50 generates a magnetic field through an electric current, so a first magnetic field is generated around the permanent magnet 51, and the first magnetic field can interact with the magnetic field of the permanent magnet 51 itself, thereby changing the magnetic field distribution in the entire second chamber 20. Then, based on the distribution state of the set permanent magnets 51, a track 52 is formed between the adjacent permanent magnets 51 along the circumference of the inner wall of the second chamber 20, and the movement path of the first magnetic field cutter passes through the track 52. Since the track 52 is composed of permanent magnets 51, the interaction between the first magnetic field cutter and the track 52 will generate magnetic resistance, thereby slowing down the movement speed of the piston rod 3 and achieving a braking effect.

[0035] In the present application, the magnetic poles on the same side of the permanent magnets 51 adjacent axially along the second chamber 20 are opposite in polarity, and the magnetic poles on the side of the permanent magnets 51 adjacent circumferentially along the second chamber 20 that are close to each other are the same in polarity. The permanent magnet 51 has fixed magnetic poles, namely the N pole and the S pole, which always appear in pairs on the magnet and have equal strength. If two permanent magnets 51 are adjacent axially and their same sides, for example, are both on the left side or are both on the right side, then the magnetic poles on the two same sides have opposite polarities. That is, the left side of a permanent magnet 51 is the N pole, and the left side of the other permanent magnet 51 adjacent axially thereto is the S pole, and vice versa. If the two permanent magnets 51 are adjacent circumferentially and their sides that are close to each other are opposite, then the polarities of the two magnetic poles that are close to each other will be the same. That is, the side close to a permanent magnet 51 is the N pole, and the side close to the other permanent magnet 51 adjacent circumferentially thereto is also the N pole, and similarly the S pole. This arrangement helps to create a more uniform, more complex or stronger magnetic field distribution in the second chamber 20, and this part of the magnetic field can be used for eddy current braking and buffering control.

[0036] In addition, the directions of the base excitation coils 50 wound on the adjacent permanent magnets 51 in the circumferential direction and axial direction of the inner wall of the second chamber 20 are opposite. That is, if the two permanent magnets 51 are adjacent in the circumferential direction on the inner wall of the chamber, the current directions of the base excitation coils 50 wound on them should be opposite; similarly, if the two permanent magnets 51 are adjacent in the axial direction in the chamber, the current directions of the base excitation coils 50 wound on them should also be opposite. Therefore, when the forward or reverse current is passed through the base excitation coil 50, the magnetic field strength of the base 2 part can be simultaneously enhanced or weakened. When the direction or strength of the magnetic field needs to be changed quickly, this design can respond faster, thereby realizing the adjustment of the magnetic field strength, and then realizing the buffering control of impacts of different intensities.

[0037] In the present application, the first magnetic field cutter provided includes a buffer head 60 and a brake pad 61, and the buffer head 60 is specifically connected to the piston rod 3; a plurality of brake pads 61 are distributed along the buffer head 60 along its circumferential direction, and the movement path of the brake pad 61 passes through the track 52. The buffer head 60 includes but is not limited to being made of copper with good electrical conductivity. When the buffer head 60 moves downward under the drive of the piston rod 3, the brake pad 61 thereon will enter the axial track 52 on the base 2. Since the track 52 is composed of permanent magnets 51, the interaction between the brake pad 61 and the track 52 will generate magnetic resistance, thereby slowing down the movement speed of the buffer head 60 or achieving a braking effect. And by adjusting the size and direction of the current, the magnetic resistance and braking effect can be flexibly adjusted to meet different application requirements.

[0038] The present application combines the principles of magnetorheological dampers and eddy current brakes, and can also transform and utilize the traditional hydraulic damper principle after the piston 40 and the piston excitation coil 41 fail, and convert the vibration energy into heat energy through the compression or relaxation of the magnetorheological fluid, thereby consuming the vibration energy of the piston rod 3, thereby achieving the purpose of shock absorption and buffering; and the eddy current brake part contains a permanent magnet 51, so when the base excitation coil 50 fails, the permanent magnet 51 can still provide a magnetic field for buffering and maintain the buffering ability. Therefore, the present application still retains some capabilities when it fails, and has higher reliability and failure safety.

[0039] In the present application, a buffer pad 7 is also provided on the bottom wall of the second chamber 20. When the buffer head 60 moves and floats too much, the buffer head 60 is stopped by the rubber pad, which further plays a buffering role and improves the safety protection capability.

[0040] In the present application, in order to facilitate the installation of the permanent magnet 51, a plurality of heat dissipation holes 80 are distributed along the circumferential direction and the axial direction on the inner wall of the second chamber 20. The heat dissipation holes 80 not only reduce the weight of the base 2, but also form a crossbeam 81 between two axially adjacent heat dissipation holes 80 on the inner wall of the second chamber 20. The permanent magnet 51 is connected to the inner wall of the crossbeam 81, and the base excitation coil 50 is wound between the crossbeam 81 and the permanent magnet 51, so that the permanent magnet 51 is easy to install. In addition, since there is still a gap in the heat dissipation hole 80 after the permanent magnet 51 is wound around the base excitation coil 50, the heat dissipation hole 80 can also provide a heat dissipation function to discharge the heat in the second chamber 20.

[0041] In the present application, in order to avoid leakage of magnetorheological fluid, end covers 9 are provided at both ends of the cylinder body 1, and a through hole is provided on the end cover 9 to match the piston rod 3, and a sealing ring is provided on the inner wall of the through hole. The sealing ring includes but is not limited to a first sealing ring 90, and a sealing groove is provided on the inner wall of the through hole. The first sealing ring 90 is connected in the sealing groove to ensure the sealing of the first chamber 10, reduce leakage, and have a reliable structure. In addition, a second sealing ring 91 is further provided on the outer wall where the end cover 9 contacts the first chamber 10 to further improve the sealing of the first chamber 10.

[0042] In the present application, screws (not shown in the figure) are also provided on the end cover 9, and blind holes are provided on the base 2. Connecting the screws with the blind holes can effectively achieve the connection between the cylinder body 1 and the base 2, with a simple structure and easy assembly and disassembly.

[0043] The implementation principle of the embodiment of the present application is: when the external equipment is subjected to vibration and impact, if the vibration and impact are small, such as encountering a bumpy working condition, the piston rod 3 starts to reciprocate under the load outside, and when the plug rod reciprocates, the second magnetic field generated on the piston 40 will act on the magnetic fluid, so that the ferromagnetic particles inside it are arranged and chained, and then under the action of the second magnetic field, the magnetorheological fluid characteristics change, forming a large number of chain structures and mesh structures. These structures will hinder the flow of the fluid, thereby generating a damping force, and the damping force and the external vibration and impact reaction force achieve a vibration isolation effect; the external load directly received by the piston rod 3 is too large, and the piston rod 3 will move significantly. At that time, when the buffer head 60 moves downward under the drive of the piston rod 3, the brake pad 61 thereon will enter the axial track 52 on the base 2. Since the track 52 is composed of the permanent magnet 51, the interaction between the brake pad 61 and the track 52 will generate magnetic resistance, thereby slowing down the movement speed of the buffer head 60 or achieving a braking effect; in addition, when the buffer head 60 is impacted and overloaded, it will hit the buffer pad 7 for buffering. The present application changes the viscosity characteristics of the magnetorheological fluid by adjusting the current passed through the piston excitation coil 41; by changing the current passed through the base excitation coil 50 to change the magnetic field strength around the permanent magnet 51, thereby changing the vibration isolation and buffering braking force, so the energy consumption of the present device is small.

[0044] Combining magnetorheological technology and eddy current braking technology, it can not only achieve hybrid control of vibration isolation and buffering, but also has a compact structure, and its overall size and mass are close to those of traditional magnetorheological dampers, and can be used in scenarios where space and weight are limited. In addition, this equipment has a simple structure and still maintains passive vibration isolation and buffering functions after a fault, with higher reliability and safety.

[0045] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0047] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A hybrid control device for vibration isolation and buffering, characterized in that: include: A cylinder body (1) having a first chamber (10) formed therein for containing magnetorheological fluid; A base (2) is mounted on one end of the cylinder body (1), a second chamber (20) is formed in the base (2), and a first magnetic field generator for forming a first magnetic field is provided at one end of the second chamber (20) away from the cylinder body (1); A piston rod (3) is inserted through the cylinder body (1) and the base (2); a second magnetic field generator and a first magnetic field cutter are arranged on the piston rod (3); the second magnetic field generator is located in the first chamber (10); the first magnetic field cutter is located in the second chamber (20); and a movement path of the first magnetic field cutter passes through the first magnetic field.

2. A hybrid control device for vibration isolation and buffering as claimed in claim 1, characterized in that: The second magnetic field generator comprises: A piston (40) connected to the piston rod (3); The piston excitation coil (41) is provided with at least two grooves, the piston excitation coil (41) is wound on the grooves, and the winding directions of the piston excitation coils (41) in two adjacent grooves are opposite.

3. A hybrid control device for vibration isolation and buffering as claimed in claim 1, characterized in that: The first magnetic field generator comprises: Base excitation coil (50); A plurality of permanent magnets (51) are distributed along the circumferential direction and the axial direction of the inner wall of the second chamber (20); the base excitation coil (50) is connected to the permanent magnets (51); a track (52) is formed between adjacent permanent magnets (51) along the circumference of the inner wall of the second chamber (20); and the movement path of the first magnetic field cutter passes through the track (52).

4. A hybrid control device for vibration isolation and buffering as claimed in claim 3, characterized in that: The first magnetic field cutter comprises: A buffer head (60), wherein the buffer head (60) is connected to the piston rod (3); A plurality of brake pads (61) are distributed along the circumference of the buffer head (60), and a movement path of the brake pads (61) passes through the track (52).

5. A hybrid control device for vibration isolation and buffering as claimed in claim 1, characterized in that: A buffer pad (7) is provided on the bottom wall of the second chamber (20).

6. A hybrid control device for vibration isolation and buffering as claimed in claim 3, characterized in that: A plurality of heat dissipation holes (80) are distributed on the inner wall of the second chamber (20) along its circumferential direction and axial direction, a crossbeam (81) is formed between two axially adjacent heat dissipation holes (80) on the inner wall of the second chamber (20), the permanent magnet (51) is connected to the inner wall of the crossbeam (81), and the base excitation coil (50) is wound between the crossbeam (81) and the permanent magnet (51).

7. A hybrid control device for vibration isolation and buffering as claimed in claim 3, characterized in that: The magnetic poles of the permanent magnets (51) adjacent to each other in the axial direction of the second chamber (20) on the same side are opposite in polarity, and the magnetic poles of the permanent magnets (51) adjacent to each other in the circumferential direction of the second chamber (20) on the side close to each other are the same in polarity.

8. A hybrid control device for vibration isolation and buffering as claimed in claim 3, characterized in that: The circumferential direction of the inner wall of the second chamber (20) is opposite to the direction of the base excitation coil (50) wound on the permanent magnet (51) adjacent in the axial direction.

9. A hybrid control device for vibration isolation and buffering as claimed in claim 1, characterized in that: End covers (9) are provided at both ends of the cylinder body (1), and a through hole is provided on the end cover (9) for clearance fit with the piston rod (3), and a sealing ring is provided on the inner wall of the through hole.

10. A hybrid control device for vibration isolation and buffering as claimed in claim 1, characterized in that: The piston rod (3) comprises: An upper piston rod (30), the second magnetic field generator being connected to the upper piston rod (30); A lower piston rod (31) is threadedly connected to the upper piston rod (30), and the first magnetic field cutter is connected to the lower piston rod (31).

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