CN117905842A - Negative-rigidity magnetic vibration isolator based on metal rubber - Google Patents
Negative-rigidity magnetic vibration isolator based on metal rubber Download PDFInfo
- Publication number
- CN117905842A CN117905842A CN202410154171.3A CN202410154171A CN117905842A CN 117905842 A CN117905842 A CN 117905842A CN 202410154171 A CN202410154171 A CN 202410154171A CN 117905842 A CN117905842 A CN 117905842A
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- metal rubber
- permanent magnet
- magnet ring
- coil
- ring
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- 229920001967 Metal rubber Polymers 0.000 title claims abstract description 72
- 210000004907 gland Anatomy 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 7
- 239000010963 304 stainless steel Substances 0.000 claims description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- -1 neodymium-iron-boron rare earth Chemical class 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 239000000725 suspension Substances 0.000 abstract description 39
- 238000002955 isolation Methods 0.000 abstract description 10
- 238000013016 damping Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
- F16F2228/063—Negative stiffness
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/08—Sensor arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/18—Control arrangements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Vehicle Body Suspensions (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides a negative-rigidity magnetic vibration isolator based on metal rubber, which comprises the following components: a hydraulic damper; a spring; the metal rubber negative stiffness electromagnetic device comprises a limiting cylinder, an upper permanent magnet ring, a lower permanent magnet ring, a metal rubber ring and a coil, wherein the metal rubber ring is fixedly sleeved on the piston rod, the movable range of the metal rubber ring in the limiting cylinder is smaller than that of the piston in the cylinder barrel, when the piston is positioned at the initial position in a non-working state in the cylinder barrel, the metal rubber ring is positioned at a magnetic force balance position between the upper permanent magnet ring and the lower permanent magnet ring, and the coil is wound on the outer wall of the limiting cylinder; and the control system is connected with the coil and is used for receiving vibration signals of the vehicle body and the wheels and controlling the coil current according to the received vibration signals. The invention realizes the adjustable and controllable rigidity of the suspension, so that the system has lower initial vibration isolation frequency and vibration isolation frequency band, thereby improving the driving comfort and the steering stability of the automobile and simultaneously increasing the applicability of the automobile.
Description
Technical Field
The invention relates to the technical field of automobile suspension systems, in particular to a negative-rigidity magnetic vibration isolator based on metal rubber.
Background
The suspension system is used as an important component of the automobile and is connected with the automobile body and wheels, the effect of the suspension system is to buffer and attenuate the impact from the road surface, the quality of the suspension directly influences the running safety and riding comfort of the automobile, and the vibration isolator is the most important component in the suspension system of the automobile. The suspension system is mainly divided into a passive suspension and an active suspension, wherein the passive suspension refers to a suspension of which the rigidity and damping coefficient cannot be changed along with the external state, the rigidity and the damping of a vibration isolator of the suspension cannot be controlled and regulated in the running process of an automobile, the passive suspension is difficult to meet the requirements of automobile running comfort and operation stability, the automobile is difficult to run through certain rugged road sections, and severe jolting not only causes discomfort to personnel in the automobile, but also causes breakdown of the suspension and causes unexpected danger. However, the passive suspension has a simple structure and low manufacturing cost, and most of automobiles are generally provided with the passive suspension. The active suspension refers to a suspension in which the stiffness of the suspension and the damping of the vibration isolator can be adjusted in real time according to the running conditions. The electronic control active suspension is characterized in that the corresponding executive elements are controlled through the ECU, and the rigidity of the suspension and the damping of the vibration isolator are automatically adjusted to adapt to the change of various complex road conditions and different requirements of running requirements on a suspension system, so that the running comfort and the operating stability of an automobile are improved. However, the active suspension system is complex and expensive, is generally used in high-grade and luxury cars, and has the problem that the stable vibration isolation performance cannot be provided due to circuit faults.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a negative-rigidity magnetic vibration isolator based on metal rubber.
The invention aims to achieve the aim, and the aim is achieved by the following technical scheme:
a metal rubber based negative stiffness magnetic vibration isolator comprising:
The hydraulic damper is characterized in that an upper hanging piece and an upper gland are arranged on a piston rod of the hydraulic damper, and a lower hanging piece and a lower gland are arranged on a cylinder barrel of the hydraulic damper;
The spring is sleeved on the hydraulic damper, the upper end of the spring is abutted with the upper gland, and the lower end of the spring is abutted with the lower gland;
The metal rubber negative stiffness electromagnetic device comprises a limiting cylinder, an upper permanent magnet ring, a lower permanent magnet ring, a metal rubber ring and a coil, wherein the limiting cylinder is fixed at the upper end of the cylinder barrel, the upper permanent magnet ring and the lower permanent magnet ring are respectively fixed at the upper end and the lower end of the interior of the limiting cylinder, a piston rod movably penetrates through the upper permanent magnet ring, the lower permanent magnet ring and the limiting cylinder, the metal rubber ring is fixedly sleeved on the piston rod, the movable range of the metal rubber ring in the limiting cylinder is smaller than the movable range of a piston in the cylinder barrel, when the piston is in an initial position in a non-working state in the cylinder barrel, the metal rubber ring is positioned in a magnetic force balance position between the upper permanent magnet ring and the lower permanent magnet ring, the coil is wound on the outer wall of the limiting cylinder, the upper limit of the coil winding range is the middle point of the distance between the upper surface of the metal rubber ring and the lower surface of the upper permanent magnet ring in the magnetic force balance position, and the lower limit of the coil winding range is the middle point of the distance between the lower surface of the metal rubber ring in the balance position and the upper surface of the lower permanent magnet ring;
and the control system is connected with the coil and is used for receiving vibration signals of the vehicle body and the wheels and controlling the coil current according to the received vibration signals.
Preferably, the control system comprises a displacement sensor, a central control unit and a signal amplifier which are sequentially connected in a signal mode, the signal amplifier is connected with the coil, the displacement sensor is used for respectively collecting vibration signals of a vehicle body and wheels and transmitting the vibration signals to the central control unit, the central control unit is used for processing the received vibration signals and transmitting the processed signals to the signal amplifier, and the signal amplifier generates needed signals to control the coil current.
Preferably, the upper hanging piece and the lower hanging piece are hanging rings.
Preferably, the piston rod and the limiting cylinder are made of low-permeability materials.
Preferably, the metal rubber ring is made of 304 stainless steel wires.
Preferably, the upper permanent magnet ring and the lower permanent magnet ring are neodymium-iron-boron rare earth permanent magnets.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the metal rubber negative stiffness electromagnetic device is additionally arranged on the traditional passive suspension damper, and the structure of the traditional passive suspension hydraulic damper is not changed, so that the damping of a suspension system is not changed, and the adjustable and controllable suspension stiffness is realized, so that the system has lower initial vibration isolation frequency and vibration isolation frequency band, the driving comfort and the steering stability of an automobile are improved, and the applicability of the automobile is increased. And in the event of circuit failure, the permanent magnet can still attract the metal rubber to generate negative rigidity. Meanwhile, the metal rubber ring is of a porous structure with excellent vibration isolation performance, and has excellent vibration isolation performance, so that the effect of preventing the suspension from breakdown can be achieved. In addition, the invention has the advantages of simple and compact mechanical structure, no noise and the like.
Drawings
FIG. 1 is a schematic view of the external structure of a metal rubber based negative stiffness magnetic vibration isolator of the present invention;
FIG. 2 is a schematic view of the internal structure of the metal rubber based negative stiffness magnetic vibration isolator of the present invention;
FIG. 3 is a schematic diagram of the working principle of the metal rubber negative stiffness electromagnetic device in the invention;
FIG. 4 is a diagram of a "quarter" metal rubber negative stiffness magnetic suspension model.
Description of the reference numerals
10-Hydraulic damper, 11-piston rod, 12-upper hanging piece, 13-upper gland, 14-cylinder, 15-lower hanging piece, 16-lower gland and 17-piston;
20-springs;
30-metal rubber negative rigidity electromagnetic device, 31-limit cylinder, 32-upper permanent magnetic ring, 33-lower permanent magnetic ring, 34-metal rubber ring and 35-coil.
Detailed Description
The application will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present application and are not intended to limit the scope of the present application. Further, it will be understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the application, and equivalents thereof fall within the scope of the application as defined by the claims.
As shown in fig. 1 to 4, the present embodiment provides a negative stiffness magnetic vibration isolator based on metal rubber, comprising: the hydraulic damper 10, wherein a piston rod 11 of the hydraulic damper 10 is provided with an upper hanging piece 12 and an upper gland 13, and a cylinder 14 of the hydraulic damper 10 is provided with a lower hanging piece 15 and a lower gland 16; a spring 20 which is sleeved on the hydraulic damper 10, and the upper end of which is abutted against the upper gland 13 and the lower end of which is abutted against the lower gland 16; the metal rubber negative stiffness electromagnetic device 30 comprises a limiting cylinder 31, an upper permanent magnet ring 32, a lower permanent magnet ring 33, a metal rubber ring 34 and a coil 35, wherein the limiting cylinder 31 is fixed at the upper end of the cylinder 14, the upper permanent magnet ring 32 and the lower permanent magnet ring 33 are respectively fixed at the upper end and the lower end inside the limiting cylinder 31, the piston rod 11 movably penetrates through the upper permanent magnet ring 32, the lower permanent magnet ring 33 and the limiting cylinder 31, the metal rubber ring 34 is fixedly sleeved on the piston rod 11, the movable range of the metal rubber ring 34 in the limiting cylinder 31 is smaller than the movable range of the piston 17 in the cylinder 14, when the piston 17 is positioned at the initial position in a non-working state in the cylinder 14, the metal rubber ring 34 is positioned at a magnetic balance position between the upper permanent magnet ring 32 and the lower permanent magnet ring 33, the coil 35 is wound on the outer wall of the limiting cylinder 31, the upper limit of the winding range of the coil 35 is the middle point of the spacing between the upper surface of the metal rubber ring 34 and the lower surface of the upper permanent magnet ring 32, and the middle point of the lower surface of the metal rubber ring 34 in the magnetic balance position, and the lower limit of the winding range of the coil 35 is the spacing between the middle point of the upper surface of the metal ring 34 and the lower surface of the lower permanent magnet ring 34 in the winding range; and the control system is connected with the coil 35 and is used for receiving vibration signals of the vehicle body and the wheels and controlling the current of the coil 35 according to the received vibration signals.
In some embodiments, as shown in fig. 2, the control system includes a displacement sensor, a central control unit and a signal amplifier, which are sequentially connected in signal, where the signal amplifier is connected to the coil, the displacement sensor is configured to collect vibration signals of the vehicle body and the wheel, and transmit the vibration signals to the central control unit, and the central control unit is configured to process the received vibration signals and transmit the processed signals to the signal amplifier, and the signal amplifier generates a required signal to control the coil current.
Specifically, the metal rubber is a porous elastic material prepared by a specific process method, and adopts metal wires as raw materials, so that the metal rubber has the advantages of small equipment and tool consumption, low preparation cost and the like in the preparation process, the porosity is controllable, and various complex shapes are easy to prepare, so that the metal rubber has the metallic property of rubber and the rubbery property of metal. In the embodiment, the metal rubber negative stiffness electromagnetic device 30 is arranged on the passive suspension vibration isolator, and the negative stiffness provided by the metal rubber negative stiffness electromagnetic device 30 is connected with the positive stiffness provided by the spring 20 in parallel, so that the total stiffness of the suspension system is reduced. For convenience of explanation, the embodiment simplifies the whole vehicle vertical dynamics model into a two-degree-of-freedom suspension model to explain the working principle of the metal rubber-based negative stiffness magnetic vibration isolator in the embodiment.
The working principle of the negative-rigidity magnetic vibration isolator based on the metal rubber in the embodiment is as follows: firstly, a displacement sensor is used by a control system to respectively measure vibration signals of a vehicle body and wheels caused by excitation of road surface unevenness, the measurement signals are transmitted to a central control unit, the relative displacement of the vehicle body and the wheels is obtained through signal processing, then the obtained processing signals are transmitted to a signal amplifier, the processing signals are processed by the signal amplifier to generate optimal current meeting the stability of the system, the direct current flows through a coil 35 and forms an electromagnet magnetic pole with a metal rubber ring 34 as shown in fig. 3, and during the vibration process, when the metal rubber ring 34 axially deflects near a magnetic force balance position, the metal rubber ring 34 is subjected to attractive force with the same direction as the deflection direction, so that the metal rubber ring 34 continues to move towards the deflection direction, and negative rigidity is shown near the magnetic force balance position. And in parallel with the positive stiffness provided by the springs 20 in conventional shock absorbers, thereby reducing the overall stiffness of the suspension system. The suspension frame provided with the negative-rigidity magnetic vibration isolator based on the metal rubber in the embodiment has higher bearing capacity and lower motion rigidity at the working position, and effectively isolates the vibration of the automobile in the driving process. In addition, if the circuit cannot work normally, the upper permanent magnet ring 32 and the lower permanent magnet ring 33 still have attractive force on the metal rubber ring 34, so that negative rigidity is generated, and the vibration isolation frequency band is improved. And when the vibration of the vehicle body is severe under the rugged road, as the metal rubber ring 34 is of a porous structure with excellent vibration isolation performance, the movable range of the metal rubber ring 34 in the limiting cylinder 31 is smaller than the movable range of the piston 17 in the cylinder 14, so that the metal rubber ring 34 moving in the limiting cylinder 31 can be impacted with the upper permanent magnet ring and the lower permanent magnet ring firstly under the limit condition when the piston 17 is required to impact the limiting block, and the effect of preventing the suspension from breakdown can be achieved due to the excellent vibration isolation performance of the metal rubber ring 34. FIG. 4 is a diagram of a "quarter" metal rubber negative stiffness magnetic suspension model. In the figure: m s and m u are the non-suspended mass and the suspended mass, respectively; k s is the positive stiffness of the suspension provided by the spring 20, and k v is the variable stiffness generated by changing the current to regulate the attractive force when the coil 35 works normally; k t is a circuit fault, or when the coil 35 does not work, the negative rigidity is provided only by the attraction of the upper permanent magnet ring, the lower permanent magnet ring and the metal rubber ring 34, and at the moment, the corresponding k v＝0;cs is a damping coefficient fixed by the passive suspension; k u is tire stiffness; z u、Zs is the vertical displacement coordinates of the wheel shaft and the vehicle body, and the origin of coordinates is at the respective equilibrium position; q is a road surface irregularity function.
The dynamic differential equation of the metal rubber negative stiffness magnetic suspension is as follows:
where k t<0,kv <0.
In some embodiments, the upper hanger 12 and the lower hanger 15 are both slings.
In some embodiments, to prevent the piston rod 11 and the stop cylinder 31 from interfering with the magnetic action of the coil 35 on the metal rubber ring 34, the piston rod 11 and the stop cylinder 31 are made of low magnetic permeability materials, such as aluminum alloy, copper alloy, and the like. The metal rubber ring 34 is made of 304 stainless steel wires, and the upper permanent magnet ring 32 and the lower permanent magnet ring 33 are neodymium-iron-boron rare earth permanent magnets with wider application value and higher magnetic energy product.
Claims (6)
1. A metal rubber-based negative stiffness magnetic vibration isolator, comprising:
The hydraulic damper is characterized in that an upper hanging piece and an upper gland are arranged on a piston rod of the hydraulic damper, and a lower hanging piece and a lower gland are arranged on a cylinder barrel of the hydraulic damper;
The spring is sleeved on the hydraulic damper, the upper end of the spring is abutted with the upper gland, and the lower end of the spring is abutted with the lower gland;
The metal rubber negative stiffness electromagnetic device comprises a limiting cylinder, an upper permanent magnet ring, a lower permanent magnet ring, a metal rubber ring and a coil, wherein the limiting cylinder is fixed at the upper end of the cylinder barrel, the upper permanent magnet ring and the lower permanent magnet ring are respectively fixed at the upper end and the lower end of the interior of the limiting cylinder, a piston rod movably penetrates through the upper permanent magnet ring, the lower permanent magnet ring and the limiting cylinder, the metal rubber ring is fixedly sleeved on the piston rod, the movable range of the metal rubber ring in the limiting cylinder is smaller than the movable range of a piston in the cylinder barrel, when the piston is in an initial position in a non-working state in the cylinder barrel, the metal rubber ring is positioned in a magnetic force balance position between the upper permanent magnet ring and the lower permanent magnet ring, the coil is wound on the outer wall of the limiting cylinder, the upper limit of the coil winding range is the middle point of the distance between the upper surface of the metal rubber ring and the lower surface of the upper permanent magnet ring in the magnetic force balance position, and the lower limit of the coil winding range is the middle point of the distance between the lower surface of the metal rubber ring in the balance position and the upper surface of the lower permanent magnet ring;
and the control system is connected with the coil and is used for receiving vibration signals of the vehicle body and the wheels and controlling the coil current according to the received vibration signals.
2. The metal rubber-based negative stiffness magnetic vibration isolator as claimed in claim 1, wherein: the control system comprises a displacement sensor, a central control unit and a signal amplifier which are sequentially connected in a signal mode, the signal amplifier is connected with the coil, the displacement sensor is used for respectively collecting vibration signals of a vehicle body and wheels and transmitting the vibration signals to the central control unit, the central control unit is used for processing the received vibration signals and transmitting the processed signals to the signal amplifier, and the signal amplifier generates needed signals to control the coil current.
3. The metal rubber-based negative stiffness magnetic vibration isolator as claimed in claim 1, wherein: the upper hanging piece and the lower hanging piece are hanging rings.
4. The metal rubber-based negative stiffness magnetic vibration isolator as claimed in claim 1, wherein: the piston rod and the limiting cylinder are made of low-permeability materials.
5. The metal rubber-based negative stiffness magnetic vibration isolator as claimed in claim 1, wherein: the metal rubber ring is made of 304 stainless steel wires.
6. The metal rubber-based negative stiffness magnetic vibration isolator as claimed in claim 1, wherein: the upper permanent magnet ring and the lower permanent magnet ring are neodymium-iron-boron rare earth permanent magnets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410154171.3A CN117905842A (en) | 2024-01-31 | 2024-01-31 | Negative-rigidity magnetic vibration isolator based on metal rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410154171.3A CN117905842A (en) | 2024-01-31 | 2024-01-31 | Negative-rigidity magnetic vibration isolator based on metal rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117905842A true CN117905842A (en) | 2024-04-19 |
Family
ID=90694412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410154171.3A Pending CN117905842A (en) | 2024-01-31 | 2024-01-31 | Negative-rigidity magnetic vibration isolator based on metal rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117905842A (en) |
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2024
- 2024-01-31 CN CN202410154171.3A patent/CN117905842A/en active Pending
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