CN115789160B - Magnetorheological hydraulic inertia Rong Zuni device and control method thereof - Google Patents
Magnetorheological hydraulic inertia Rong Zuni device and control method thereof Download PDFInfo
- Publication number
- CN115789160B CN115789160B CN202211487961.0A CN202211487961A CN115789160B CN 115789160 B CN115789160 B CN 115789160B CN 202211487961 A CN202211487961 A CN 202211487961A CN 115789160 B CN115789160 B CN 115789160B
- Authority
- CN
- China
- Prior art keywords
- piston
- inner cylinder
- inertia
- cylinder
- magnetorheological fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 45
- 238000013016 damping Methods 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 11
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000009467 reduction Effects 0.000 claims abstract description 10
- 238000005457 optimization Methods 0.000 claims abstract description 5
- 230000005284 excitation Effects 0.000 claims description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000006249 magnetic particle Substances 0.000 abstract description 3
- 230000002441 reversible effect Effects 0.000 abstract description 3
- 230000010287 polarization Effects 0.000 abstract 1
- 230000008859 change Effects 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The invention provides a magnetorheological hydraulic inertia Rong Zuni device and a control method thereof, wherein the magnetorheological hydraulic inertia Rong Zuni device comprises an end cover, an outer cylinder, an inner cylinder, a core cylinder, an outer exciting coil, an inner exciting coil, a piston, magnetorheological fluid and a piston rod; the outer cylinder, the inner cylinder, the core cylinder, the piston and the piston rod are coaxially arranged, and two ends of the outer cylinder are respectively fixed with the end cover. The scheme utilizes the inertia effect generated by the flow of the magnetorheological fluid in the spiral pipeline and changes the cross section area of the spiral pipeline by controlling the magnetic field intensity of the external exciting coil to make the magnetic particles in the magnetorheological fluid have polarization arrangement, so as to realize stepless adjustment of the inertia capacity; meanwhile, damping is controlled in real time by utilizing the reversible magneto-rheological property of magneto-rheological fluid in the inner cylinder under the action of the magnetic field of the inner exciting coil; the intelligent control combining the dynamic matching and coordination optimization of the inertia capacity and the damping promotes the vibration reduction performance of the structure and the self-adaptive capacity to the working environment, and the device has simple structure and is beneficial to engineering application.
Description
Technical Field
The invention relates to the technical field of structural vibration reduction control, in particular to a magnetorheological hydraulic inertia Rong Zuni device and a control method thereof.
Background
The dynamic response of the civil engineering structure under the action of external loads such as wind, earthquake and the like influences the service performance of the structure, and severe vibration also endangers the safety of the structure. Dampers have been widely studied and used as an effective means of structural vibration damping control. In recent years, the inertia Rong Zuni device has been studied and practiced as a novel vibration damping device in the fields of automobiles, machinery and civil engineering. Inertial containers are mass elements having two independent, free-moving endpoints, the output force of which is proportional to the relative acceleration between the two endpoints (the proportionality coefficient is the inertial coefficient). The inertial container can produce an inertial coefficient much greater than its own physical mass without substantially altering the structural physical mass. The combination of the inertial container and the damper can realize efficient structure energy consumption vibration reduction by utilizing the inertial mass amplification effect.
The conventional passive inertial Rong Zuni device does not have the function of continuously and dynamically adjusting the damping coefficient and the inertial capacity coefficient, lacks the self-adaptive control capability of structural dynamic characteristic change, and limits the vibration reduction performance of the inertial Rong Zuni device. By utilizing the continuous, reversible and rapid magnetorheological characteristics of the magnetorheological fluid under the action of an external magnetic field, the conventional magnetorheological damper only realizes the semi-active control of damping in real time and controllability. In order to realize the adjustment of the inertia capacity coefficient, patent CN 103644248a uses the inertia effect of the magnetorheological fluid flowing in the slender tube without an external magnetic field, and controls the on-off of a plurality of slender tubes with different tube diameters through a switch valve to adjust the inertia capacity coefficient in a grading manner, but cannot realize continuous stepless adjustment of the inertia capacity. The patent CN109630597A combines a passive ball screw inertial container with magnetorheological fluid, and utilizes the change of viscosity of the magnetorheological fluid under the action of a magnetic field to influence the torque generated by the rotation of a flywheel so as to change the inertial capacity coefficient, but continuous adjustment of the inertial capacity is realized by means of a force compensation mechanism, so that the device is complex in design and use and is not beneficial to engineering application. Along with research, development and application of semi-active vibration control theory and technology to meet the increasing vibration reduction demand, a novel semi-active magneto-rheological inertial damper capable of continuously changing inertial volume and damping in real time needs to be developed in engineering.
Disclosure of Invention
Therefore, the invention aims to provide the magnetorheological hydraulic inertia Rong Zuni device and the control method thereof, realize the combined coordination intelligent control of variable inertia capacity and variable damping, simplify the mechanical structure of the inertia Rong Zuni device, enhance the self-adaptive capacity of the inertia Rong Zuni device to the working environment and effectively improve the vibration reduction control performance.
In order to achieve the above purpose, the invention adopts the following technical scheme: a magneto-rheological hydraulic inertial-volume damper comprises an end cover, an outer cylinder, an inner cylinder, a core cylinder, an outer exciting coil, an inner exciting coil, a piston, magneto-rheological fluid and a piston rod; the outer cylinder, the inner cylinder, the core cylinder, the piston and the piston rod are coaxially arranged, and two ends of the outer cylinder are respectively fixed with the end cover.
In a preferred embodiment, the inner cylinder and the two end covers form a closed cavity, and magnetorheological fluid is filled in the closed cavity.
In a preferred embodiment, the piston is disposed in the inner barrel, the piston dividing the inner barrel into two chambers; the outer wall of the piston is provided with a first annular groove, and an inner exciting coil is wound in the first annular groove; a circular throttling channel for the magnetorheological fluid to flow is formed between the outer wall of the piston and the inner wall of the inner cylinder; the two ends of the piston are respectively fixed with one ends of the two piston rods, and the other ends of the two piston rods respectively extend out of the two ends of the inner cylinder through the end covers.
In a preferred embodiment, the outer wall of the core barrel is recessed inwards along the radial direction to form a second annular groove, and an external excitation coil is arranged in the second annular groove; the inner wall of the core barrel is recessed inwards along the radial direction to form a spiral groove, and the spiral pipeline for the flow of magnetorheological fluid is formed by the installation of the core barrel and the inner barrel in a gapless fit manner.
In a preferred embodiment, the wall of the inner cylinder, which is close to the end, is respectively provided with two through holes, which are respectively and directly connected with the head end and the tail end of the spiral pipeline, and the inner cavity of the inner cylinder is communicated with the spiral pipeline, so that the magnetorheological fluid circularly flows between the inner cylinder and the spiral pipeline.
The invention also provides a control method of the magneto-rheological hydraulic inertia Rong Zuni device, which controls the magneto-rheological hydraulic inertia Rong Zuni device, wherein the inertia damping device is arranged on a structure, when the structure vibrates under the external excitation action, the structure vibrates through the induction of the vibration sensor, a feedback signal is generated and is input to a controller, the controller calculates the control force according to the feedback signal, determines the control current based on the dynamic matching and the coordination optimization of the inertia and the damping, and respectively outputs the control current to an external excitation coil and an internal excitation coil, changes the intensity of internal and external magnetic fields, adjusts the magneto-rheological effect, realizes the dynamic joint coordination control of the variable inertia and the variable damping, and achieves the aim of high-efficiency vibration reduction of the structure.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the magnetorheological fluid flows in the spiral pipeline to realize the encapsulation of the flowing inertia of the magnetorheological fluid, and meanwhile, the continuous dynamic adjustment of the inertia capacity is realized by utilizing the magnetorheological effect, so that the defect that the conventional mechanical inertia container cannot adjust the inertia capacity on line is overcome, and the performance of the inertia container is further improved.
2. The invention realizes the semi-active magnetorheological hydraulic inertial damper with real-time double control of inertial volume and damping, overcomes the defect that the magnetorheological damper can only dynamically adjust damping by utilizing the inertial volume principle, improves the energy consumption capacity of the damper and the self-adaptive control capacity of the damper on the structural dynamic characteristic change, and realizes the vibration reduction and synergy of the structure.
3. The inertia capacity and the damping are respectively and independently controlled by different exciting coils, and intelligent control of dynamic matching and coordination optimization of the inertia capacity and the damping can be implemented, so that the control of the damper is more accurate and effective, and the working range is wider.
4. The invention has simple and compact structure, high reliability, less energy consumption, convenient installation and use and more favorable engineering application.
Drawings
FIG. 1 is a schematic structural view of a magnetorheological fluid inertia Rong Zuni machine in accordance with a preferred embodiment of the present invention.
In the figure: 1-end caps; 2-an outer cylinder; 3-an inner cylinder; 4-a core barrel; 5-an external excitation coil; 6-an internal exciting coil; 7-a piston; 8-spiral pipes; 9-magnetorheological fluid; 10-a piston rod.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application; as used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in fig. 1, the magnetorheological fluid inertia Rong Zuni device provided by the invention consists of an end cover 1, an outer cylinder 2, an inner cylinder 3, a core cylinder 4, an outer exciting coil 5, an inner exciting coil 6, a piston 7, magnetorheological fluid 9 and a piston rod 10. The outer cylinder 2, the inner cylinder 3, the core cylinder 4, the piston 7 and the piston rod 10 are coaxially arranged, and two ends of the outer cylinder 2 are respectively fixed with the end cover 1.
The inner cylinder 3 and the two end covers 1 form a closed cavity, and magnetorheological fluid 9 is filled in the closed cavity. The piston 7 is arranged in the inner cylinder 3 and divides the inner cylinder 3 into two chambers; an annular groove is formed in the outer wall of the piston 7, and an inner exciting coil 6 is wound in the groove; a circular throttling channel for the magnetorheological fluid 9 to flow is formed between the outer wall of the piston 7 and the inner wall of the inner cylinder 3; the two ends of the piston 7 are respectively fixed with one ends of two piston rods 10, and the other ends of the two piston rods 10 respectively extend out of the two ends of the inner cylinder 3 through the end covers 1.
The outer wall of the core barrel 4 is recessed inwards along the radial direction to form an annular groove, and an external excitation coil 5 is arranged in the groove; the inner wall of the core barrel 4 is recessed inwards along the radial direction to form a spiral groove, and a spiral pipeline 8 for flowing magnetorheological fluid 9 is formed by the installation of the core barrel 4 and the inner barrel 3 in a gapless fit manner.
The inner cylinder 3 is provided with two through holes near the cylinder walls at two ends, and is respectively and directly connected with the head end and the tail end of the spiral pipeline 8, and the spiral pipeline 8 and the inner cavity of the inner cylinder 3 are communicated, so that magnetorheological fluid 9 circularly flows between the inner cylinder 3 and the spiral pipeline 8.
The principle of the invention is as follows: by utilizing the continuous, reversible and rapid magneto-rheological property of the magneto-rheological liquid under the action of an external magnetic field and by controlling the magnetic field intensity in the inner cylinder 3, the mechanical property of the magneto-rheological liquid is changed, and the real-time dynamic adjustment of damping is realized. Meanwhile, the magnetorheological fluid has low viscosity and high density under the condition of no external magnetic field, and shows remarkable inertial effect when flowing in the spiral pipeline 8; when a magnetic field is applied to the magnetorheological fluid in the spiral pipeline 8, the suspended magnetic particles in the magnetorheological fluid are polarized and arranged and gathered, so that the cross section area of the spiral pipeline is changed, and the purpose of continuously, real-time and stepless regulating the inertia capacity is achieved.
The magnetorheological hydraulic inertia Rong Zuni device of the embodiment is of a double-output rod structure, an energy accumulator is not needed to be arranged, and the structure is simple. The end cover 1, the inner cylinder 3, the inner exciting coil 6, the piston 7, the magnetorheological fluid 9 and the piston rod 10 jointly form a unit for implementing the damping function. When the piston rod 10 is connected with an external structure, the vibration of the external structure drives the piston 7 and the inner cylinder 3 to generate relative sliding through the piston rod 10, magnetorheological fluid 9 in a cavity of the inner cylinder 3 flows through the annular throttling channel under the pushing of the piston 7, a magnetorheological effect in a flowing mode is formed under the action of a magnetic field generated by the inner exciting coil 6, and the intensity of the magnetic field is controlled by the energizing current of the inner exciting coil 6, so that the dynamic adjustment and the real-time control of damping are realized.
In this embodiment, the spiral pipe 8, the external exciting coil 5 and the magnetorheological fluid 9 formed by matching the inner cylinder 3 and the core cylinder 4 together form a unit for realizing variable inertial volume. The spiral pipeline 8 is communicated with the inner cylinder 3, and magnetorheological fluid 9 flowing in the inner cylinder 3 circularly flows between the spiral pipeline 8 and the two chambers of the inner cylinder 3 through the through holes on the wall of the inner cylinder 3. The magnetorheological fluid 9 stores a large amount of kinetic energy as it flows in the helical tube 8, thereby generating an inertial force, which can be calculated by:
Wherein b is the inertial coefficient, a is the acceleration of the piston relative to the inner cylinder, ρ is the density of the magnetorheological fluid, L is the length of the spiral pipeline, A 1 is the actual working area of the piston, A 2 is the cross-sectional area of the spiral pipeline, and m is the mass of the magnetorheological fluid in the spiral pipeline. From the above, it is known that the ratio of the inertial force to the mass of magnetorheological fluid flowing in the helical channel is proportional to the square of the ratio of the actual working area of the piston to the cross-sectional area of the helical channel; the inertia capacity coefficient is in direct proportion to the density of the magnetorheological fluid, the length of the spiral pipeline and the actual working area of the piston, and in inverse proportion to the cross section area of the spiral pipeline. Because the density of the magnetorheological fluid is larger, and the actual working area of the piston is much larger than the cross section area of the spiral pipeline, the inertial capacity coefficient of the magnetorheological fluid Rong Zuni device is very large, which is equivalent to the mass of the magnetorheological fluid in the spiral pipeline, and when the magnetorheological fluid flows in the spiral pipeline, a remarkable inertial effect is generated. Under the action of a magnetic field generated by an external excitation coil, the suspended magnetic particles of magnetorheological fluid in the spiral pipeline are polarized and arranged to gather, so that the pipe diameter of the spiral pipeline is changed, namely the cross section area of the spiral pipeline is changed, and the purpose of changing the inertia capacity is achieved.
In this embodiment, the external exciting coil 5 and the internal exciting coil 6 may be independently powered, and are respectively connected to an external power supply circuit or a controllable current source. The magnetic field intensity is changed by controlling the magnitude of the electrified current so as to adjust the strength of the magneto-rheological effect, and continuous adjustment and real-time control of inertia capacity and damping are realized.
The invention also provides a control method for the magnetorheological hydraulic inertia Rong Zuni device, which is characterized in that the inertia damper is arranged on a structure, when the structure vibrates under the action of external excitation, the vibration sensor senses the structure vibration, a feedback signal is generated and is input to the controller, the controller calculates the control force according to the feedback signal, and determines the control current based on the dynamic matching and the coordination optimization of the inertia and the damping, and outputs the control current to the external exciting coil 5 and the internal exciting coil 6 respectively, so that the internal and external magnetic field intensity is changed, the magnetorheological effect is adjusted, the variable inertia and the variable damping are dynamically combined and coordinated, and the aim of high-efficiency vibration reduction of the structure is achieved.
While the application has been described with reference to specific embodiments thereof, which explain the principles of the application and are understood by those skilled in the art to which the application pertains, various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the application. The application is not to be limited by the specific embodiments disclosed herein, but rather, embodiments falling within the scope of the appended claims are intended to be embraced by the application.
Claims (2)
1. The magnetorheological hydraulic inertial damping device is characterized by comprising an end cover, an outer cylinder, an inner cylinder, a core cylinder, an outer exciting coil, an inner exciting coil, a piston, magnetorheological fluid and a piston rod; the outer cylinder, the inner cylinder, the core cylinder, the piston and the piston rod are coaxially arranged, and two ends of the outer cylinder are respectively fixed with the end cover;
The inner cylinder and the two end covers form a closed cavity, and magnetorheological fluid is filled in the closed cavity;
The piston is arranged in the inner cylinder and divides the inner cylinder into two chambers; the outer wall of the piston is provided with a first annular groove, and an inner exciting coil is wound in the first annular groove; a circular throttling channel for the magnetorheological fluid to flow is formed between the outer wall of the piston and the inner wall of the inner cylinder; two ends of the piston are respectively fixed with one ends of two piston rods, and the other ends of the two piston rods respectively extend out of two ends of the inner cylinder through end covers;
The outer wall of the core barrel is recessed inwards along the radial direction to form a second annular groove, and an external excitation coil is arranged in the second annular groove; the inner wall of the core barrel is recessed inwards along the radial direction to form a spiral groove, and the spiral groove is installed in a gapless fit manner through the core barrel and the inner barrel to form a spiral pipeline for flowing magnetorheological fluid;
the inner cylinder is provided with two through holes on the wall near the end, which are connected with the head and tail ports of the spiral pipe, and the inner cylinder is communicated with the inner cavity of the inner cylinder, so that the magnetorheological fluid circularly flows between the inner cylinder and the spiral pipe.
2. A control method of a magneto-rheological hydraulic inertia Rong Zuni device is characterized in that the magneto-rheological hydraulic inertia Rong Zuni device is controlled, the magneto-rheological hydraulic inertia Rong Zuni device is arranged on a structure, when the structure vibrates under the action of external excitation, a vibration sensor senses the vibration of the structure, a feedback signal is generated and is input to a controller, the controller calculates control force according to the feedback signal, determines the control current based on dynamic matching and coordination optimization of inertia and damping, and outputs the control current to an external excitation coil and an internal excitation coil respectively, so that the intensity of an internal magnetic field and an external magnetic field is changed, the magneto-rheological effect is adjusted, the dynamic joint coordination control of the variable inertia and the variable damping is realized, and the aim of high-efficiency vibration reduction of the structure is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211487961.0A CN115789160B (en) | 2022-11-24 | 2022-11-24 | Magnetorheological hydraulic inertia Rong Zuni device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211487961.0A CN115789160B (en) | 2022-11-24 | 2022-11-24 | Magnetorheological hydraulic inertia Rong Zuni device and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115789160A CN115789160A (en) | 2023-03-14 |
| CN115789160B true CN115789160B (en) | 2024-05-03 |
Family
ID=85441360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211487961.0A Active CN115789160B (en) | 2022-11-24 | 2022-11-24 | Magnetorheological hydraulic inertia Rong Zuni device and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115789160B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006273225A (en) * | 2005-03-30 | 2006-10-12 | Honda Motor Co Ltd | Controlling device for adjustable damping force damper |
| JP2014194253A (en) * | 2013-03-29 | 2014-10-09 | Sanwa Tekki Corp | Damping force variable hydraulic vibration control device |
| CN107448536A (en) * | 2017-09-19 | 2017-12-08 | 福州大学 | Sensing magnetic rheological liquid damper and its control method certainly of a kind of recoverable energy |
| CN108050196A (en) * | 2017-11-28 | 2018-05-18 | 江苏大学 | A kind of used case of multitube connection |
| CN110388403A (en) * | 2019-07-17 | 2019-10-29 | 重庆大学 | Binary channels becomes used and holds variable damping damper |
| CN111236722A (en) * | 2020-01-20 | 2020-06-05 | 同济大学 | Limit damper with variable inertial volume |
| CN112594320A (en) * | 2020-12-02 | 2021-04-02 | 江苏大学 | Inertial volume and magnetorheological damping fusion type suspension vibration damping mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6953108B2 (en) * | 2003-04-04 | 2005-10-11 | Millenworks | Magnetorheological damper system |
-
2022
- 2022-11-24 CN CN202211487961.0A patent/CN115789160B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006273225A (en) * | 2005-03-30 | 2006-10-12 | Honda Motor Co Ltd | Controlling device for adjustable damping force damper |
| JP2014194253A (en) * | 2013-03-29 | 2014-10-09 | Sanwa Tekki Corp | Damping force variable hydraulic vibration control device |
| CN107448536A (en) * | 2017-09-19 | 2017-12-08 | 福州大学 | Sensing magnetic rheological liquid damper and its control method certainly of a kind of recoverable energy |
| CN108050196A (en) * | 2017-11-28 | 2018-05-18 | 江苏大学 | A kind of used case of multitube connection |
| CN110388403A (en) * | 2019-07-17 | 2019-10-29 | 重庆大学 | Binary channels becomes used and holds variable damping damper |
| CN111236722A (en) * | 2020-01-20 | 2020-06-05 | 同济大学 | Limit damper with variable inertial volume |
| CN112594320A (en) * | 2020-12-02 | 2021-04-02 | 江苏大学 | Inertial volume and magnetorheological damping fusion type suspension vibration damping mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 用磁流变液阻尼可调减振器改善车辆座椅特性的研究;潘公宇;潘秋华;;工程机械;20071010(10);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115789160A (en) | 2023-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109630596B (en) | Rotary type damping-adjustable silicone oil-magnetorheological torsional vibration damper | |
| CN110242696B (en) | Variable damping control method of multistage controllable variable damping shock absorber | |
| CN111734773B (en) | Magnetorheological fluid vibration absorber with variable wide-range rigidity damping by utilizing permanent magnetic mechanism | |
| CN109235688A (en) | A kind of magnetorheological half active stiffness adjustable shock absorber | |
| CN104755795A (en) | Damper | |
| CN108302152B (en) | Magnetorheological damper with complex liquid flow channel structure | |
| CN110056599B (en) | Double-cylinder active magnetorheological damper with variable stroke in shearing mode | |
| CN108953467A (en) | A kind of damping clearance adjustable type magnetic rheology damper with series connection fluid course | |
| CN108561486A (en) | A kind of novel anti-settling magnetic rheological liquid damper | |
| CN206904139U (en) | A kind of MR damper with multiple road conditions vibration control | |
| CN107387651B (en) | A kind of variation rigidity MR damper and its control method | |
| CN100455843C (en) | Magnetic-fluid change type regulation-liquid column damper | |
| CN205136453U (en) | Variably be used to dual circuit liquid of matter coefficient and be used to container | |
| CN206802174U (en) | Vehicle suspension Novel magneto-rheological damper with bypass fluid course | |
| CN109404476A (en) | A kind of embedded multi-channel shunt runner MR damper | |
| CN108458031B (en) | A kind of super mangneto squash type MR damper adaptive approach and damper | |
| CN106015436A (en) | Order-variable permanent magnet rheological damper | |
| CN108331877A (en) | Shear-type magnetorheological fluid damper based on quadrupole magnetic core Yu foam metal liner | |
| CN115789160B (en) | Magnetorheological hydraulic inertia Rong Zuni device and control method thereof | |
| CN115163723A (en) | Magnetorheological variable damping vibration attenuation energy dissipation device | |
| CN109667877B (en) | Method for realizing four-quadrant output characteristic of semi-active actuator | |
| CN109236936B (en) | Magnetorheological damper sealed by elastic metal corrugated pipe | |
| CN111075879A (en) | Constant-temperature magnetorheological damper based on flexible semiconductor temperature control technology | |
| CN208153613U (en) | A kind of MR damper | |
| CN106594160A (en) | Foldable flowing magnetorheological damper with wide adjustable range |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |