CN107061603B - A kind of magnetorheological fluid Multi-regulation vibration isolator - Google Patents
A kind of magnetorheological fluid Multi-regulation vibration isolator Download PDFInfo
- Publication number
- CN107061603B CN107061603B CN201710168129.7A CN201710168129A CN107061603B CN 107061603 B CN107061603 B CN 107061603B CN 201710168129 A CN201710168129 A CN 201710168129A CN 107061603 B CN107061603 B CN 107061603B
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- China
- Prior art keywords
- magnetorheological fluid
- damping
- vibration isolator
- vibration
- bypass
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- 239000012530 fluid Substances 0.000 title claims abstract description 58
- 238000013016 damping Methods 0.000 claims abstract description 50
- 229920002635 polyurethane Polymers 0.000 claims abstract description 5
- 239000004814 polyurethane Substances 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000518 rheometry Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/26—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
- F16F13/30—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids
- F16F13/305—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids magnetorheological
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
本发明属于智能材料减振领域，具体涉及一种磁流变液多级调控隔振器。本发明结合旁路阻尼控制的多级调控隔振器，在传统磁流变隔振器的缸内活塞孔隙流动模式基础上，加入阻尼旁通回路结构，并将以往单级磁场工作区域设计成多级可控磁场，所述隔振器包括活塞杆、聚氨酯弹性元件、活塞杆上下端盖、储存磁流变液的活塞筒。在不加电流作用下或控制系统故障时，磁流变液多级调控隔振器变成传统的旁路阻尼器，磁流变液在活塞杆作用时从管壁阻尼孔流出，同样具有一定的阻尼力可起到减振作用。多层电磁铁布置可以实现单独可控、逐级变化的特点，使得振动经过硬层‑软层‑硬层的过程，增强了隔振效果。
The invention belongs to the field of vibration damping of intelligent materials, and in particular relates to a multi-stage control vibration isolator of magnetorheological fluid. The invention combines the multi-stage regulating vibration isolator with bypass damping control, adds damping bypass loop structure on the basis of the piston pore flow mode in the traditional magnetorheological vibration isolator, and designs the previous single-stage magnetic field working area as Multi-stage controllable magnetic field, the vibration isolator includes a piston rod, a polyurethane elastic element, upper and lower end caps of the piston rod, and a piston cylinder for storing magnetorheological fluid. When no current is applied or the control system fails, the MR fluid multi-stage vibration isolator becomes a traditional bypass damper, and the MR fluid flows out from the damping hole of the tube wall when the piston rod acts, which also has a certain The damping force can play a role in reducing vibration. The multi-layer electromagnet arrangement can realize the characteristics of individually controllable and step-by-step change, so that the vibration passes through the process of hard layer-soft layer-hard layer, which enhances the vibration isolation effect.
Description
Technical field
The invention belongs to intellectual material vibration damping fields, and in particular to a kind of magnetorheological fluid Multi-regulation vibration isolator.
Background technique
Vibration can cause a series of problems, such as vibration to cause the fatigue damage of component of machine, loosen fracture failure, is straight
Connect or cause indirectly equipment breakdown.Given this various resistances have been used in space flight and aviation, military project firearms, automobile and other industries
Buddhist nun's device or vibration isolator carry out vibration and noise reducing.
Magnetorheological fluid be it is a kind of can quickly, be reversibly changed by the Newtonian fluid of good fluidity under magnetic fields
High viscosity, low-flow Bingham elasticoplastic body intellectual material.Magnetorheological fluid can be quick with the variation of external magnetic field
Ground changes oneself state (response time is short), and energy consumption is smaller, can export biggish damping force.
The MR damper or vibration isolator used is invented at present, most of is all to belong to piston hole gap flow pattern, this
Kind MR damper is because damping force adjustable extent is narrow, magnetic fields region is small, magnetorheological fluid utilization rate is low and settlement stability
The disadvantages of property is poor, so that the damping force range that can be provided is limited.
Summary of the invention
The purpose of this patent is to provide a kind of magnetorheological fluid Multi-regulation vibration isolator of combination bypass damping control.
The object of the present invention is achieved like this:
A kind of magnetorheological fluid Multi-regulation vibration isolator, in conjunction with the Multi-regulation vibration isolator of bypass damping control, in traditional magnetic
On the basis of the cylinder inner piston flow of pore mode of rheology vibration isolator, damping bypass circulation structure is added, and by previous single-stage magnetic field
Working region is designed to that multistage controllable magnetic field, the vibration isolator include piston rod, elastic polyurethane element, piston rod upper and lower side
The piston cylinder of lid, storage magnetorheological fluid；Piston cylinder disposed outside multilayer electromagnet, every layer of electromagnet interval, which all designs, damping
Circuit is equipped with magnetorheological fluid valve on damping circuit, is controlled in damping circuit by the magnetorheological fluid valve of bypass by magnetic fields
The magnetorheological fluid viscosity in region controls the velocity of liquid assets of magnetorheological fluid, carries out damping control.
The control section of magnetic rheological liquid damper is by acceleration transducer, displacement sensor, intelligent controller, program-controlled direct current
Electric power generating composition according to extraneous vibration automatic adjustment piston cylinder external excitation coil and bypasses magnet exciting coil in magnetorheological fluid valve
Size of current.
The beneficial effects of the present invention are:
Under the function of current is not added or when control system failure, magnetorheological fluid Multi-regulation vibration isolator becomes traditional bypass
Damper, magnetorheological fluid are flowed out when piston rod is acted on from tube wall damping hole, equally there is certain damping force can play vibration damping
Effect.Individually controllable, the characteristics of changing step by step may be implemented in multilayer electromagnet arrangement, so that hard formation-soft formation-hard formation is passed through in vibration
Process, enhance vibration isolating effect.This magnetorheological fluid Multi-regulation vibration isolator not only subtracts from magnetorheological fluid shearing damp power angle
Vibration generates rheological behavior using magnetorheological fluid under magnetic fields, damping force can in the Millisecond time moment increase, resistance
Piston motion is hindered to play effectiveness in vibration suppression；The mode for also introducing bypass adaptive damping circulation loop, solves the problems, such as magnetorheological fluid sedimentation
While, more one layer of damping outpost increase the utilization rate and vibration isolating effect of magnetorheological fluid.Vibration isolator uses external electromagnet
With bypass damping circuit, shorten damper length, can be used for boat diesel engine vibration damping, floating raft vibration isolation device etc. to space requirement compared with
High place.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of magnetorheological fluid Multi-regulation vibration isolator；
Fig. 2 is external electromagnet top view；
Fig. 3 is work of electromagnet magnetic circuit schematic diagram.
Specific embodiment
The present invention is described further with reference to the accompanying drawing.
The vibration isolator is added damping and bypasses back on the basis of the cylinder inner piston flow of pore mode of traditional magnetic rheological isolator
Line structure, and previous single-stage magnetic field working region is designed to Multi-regulation magnetic field, not only can independently regulate and control so magnetorheological
Size is damped in the bypass of every grade of liquid and cylinder, the utilization rate of magnetorheological fluid is improved, also by circulating solution magnetorheological fluid
The problem of sedimentation stability.
A kind of intelligent vibration isolator based on magnetorheological fluid materials, the magnetorheological fluid Multi-regulation vibration isolator includes piston
The piston cylinder of end cap, storage magnetorheological fluid above and below bar, elastic polyurethane element, piston rod.Piston cylinder disposed outside multilayer electromagnetism
Iron, every layer of electromagnet interval, which all designs, damping circuit, and magnetorheological fluid valve is equipped on damping circuit, can pass through bypass
Magnetorheological fluid valve controls the magnetorheological fluid viscosity in damping circuit by magnetic fields region, and then controls the circulation speed of magnetorheological fluid
Degree, plays damping action.The purpose of external multi-stage electromagnet is to generate the uniform magnetic field for being horizontally through piston cylinder, in this way in piston cylinder
There is lateral uniform magnetic field in inside, so that piston rod vibrates up and down the sticky magnetic current that all can first contact by magnetic fields every time
Become liquid, when moving downward, the magnetorheological fluid of lower working chamber is squeezed into damping hole, this part magnetorheological fluid is returned from the damping of bypass
Road flows through the supreme working chamber of magnetorheological fluid valve.When piston rod acting in opposition, the magnetorheological fluid of upper working chamber damps back through bypass
Lower working chamber is flowed back on road, and not only more in this way damping outposts together increase the utilization rate of magnetorheological fluid, can also solve magnetic current
The problem of becoming the sedimentation of liquid vibration isolator.
The control section of magnetorheological fluid Multi-regulation vibration isolator device is by acceleration transducer, displacement sensor, intelligent control
Device, programme-controlled dc power etc. are constituted, it can be achieved that according to extraneous vibration automatic adjustment piston cylinder external excitation coil and bypass magnetic
The size of current of magnet exciting coil in rheology liquid valve, so that magnetic rheological liquid damper has adaptivity.
Magnetorheological fluid Multi-regulation vibration isolator is further described referring to Fig. 1, Fig. 3.
The part name that serial number represents in figure:
1 piston upper end cover；2 elastic polyurethane elements；3 vibration isolator upper end covers；4 bypass damping pipelines；5 bypass magnetorheological fluids
Valve；6 piston cylinder damping holes；7 working chambers；8 piston rods；9 sealing rings；10 external electromagnets；11 piston cylinders；12 magnet exciting coils.
Fig. 1 is the structural schematic diagram of magnetorheological fluid Multi-regulation vibration isolator.It is characterized by: the magnetorheological fluid vibration isolation
Device is made of working chamber and external control system two parts.Working chamber includes piston rod upper and lower side, bypasses damping circuit, is external
Multistage electromagnet；Control system part includes sensor, controller, DC power supply etc..
When piston rod moves up and down, the acceleration signal that external sensor will test is transmitted to controller, controller warp
Vibration analysis is crossed, generates control signal according to required vibration damping demand, control electric current is applied to the external multistage electricity of working chamber
Magnetorheological fluid valve on magnet and bypass damping circuit, the magnetorheological fluid in working chamber is acted on by transverse magnetic field generates rheology effect
It answers, damping force is instantaneously significantly increased, and hinders piston rod movement, while a part of magnetorheological fluid passes through the damping hole of piston barrel
Bypass damping circuit is flowed into, is acted on flows decrease by MR valve, the magnetic rheological isolator is not only from damping force angle vibration damping, also
Slow down flow velocity by bypass loop and plays damping action.
The work magnetic circuit that inside is formed when Fig. 3 is the magnet exciting coil both ends loading current in magnetorheological fluid Multi-regulation device shows
It is intended to.When solenoid coil is passed through electric current, magnetic field passes through working chamber along magnetizer, and multistage electromagnet is formed in working chamber
Hard formation-soft formation-hard formation arranged distribution, so that vibration is constantly dissipated in multilayer damping structure.
Claims (2)
1. a kind of magnetorheological fluid Multi-regulation vibration isolator, in conjunction with the Multi-regulation vibration isolator of bypass damping control, in traditional magnetic current
Become on the basis of the cylinder inner piston flow of pore mode of vibration isolator, damping bypass circulation structure is added, and by previous single-stage magnetic field work
Multistage controllable magnetic field is designed to as region, it is characterised in that: the vibration isolator includes piston rod, elastic polyurethane element, piston
The piston cylinder of end cap, storage magnetorheological fluid above and below bar；Piston cylinder disposed outside multilayer electromagnet, every layer of electromagnet interval are all set
In respect of damping circuit, magnetorheological fluid valve is equipped on damping circuit, by the magnetorheological fluid valve of bypass control in damping circuit by
The magnetorheological fluid viscosity in magnetic fields region controls the velocity of liquid assets of magnetorheological fluid, carries out damping control.
2. a kind of magnetorheological fluid Multi-regulation vibration isolator according to claim 1, it is characterised in that: magnetic rheological liquid damper
Control section be made of acceleration transducer, displacement sensor, intelligent controller, programme-controlled dc power, according to extraneous vibration
Dynamic automatic adjustment piston cylinder external excitation coil and the size of current for bypassing magnet exciting coil in magnetorheological fluid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168129.7A CN107061603B (en) | 2017-03-21 | 2017-03-21 | A kind of magnetorheological fluid Multi-regulation vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710168129.7A CN107061603B (en) | 2017-03-21 | 2017-03-21 | A kind of magnetorheological fluid Multi-regulation vibration isolator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107061603A CN107061603A (en) | 2017-08-18 |
| CN107061603B true CN107061603B (en) | 2019-02-01 |
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| CN201710168129.7A Active CN107061603B (en) | 2017-03-21 | 2017-03-21 | A kind of magnetorheological fluid Multi-regulation vibration isolator |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194573A (en) * | 2017-12-28 | 2018-06-22 | 江苏大学 | A kind of adaptive vibrating isolation system of multi-state and its control method |
| CN108506405B (en) * | 2018-03-29 | 2020-10-27 | 西安交通大学 | A dual-cylinder dual-rod flow-type magnetorheological damper |
| CN108843720B (en) * | 2018-06-20 | 2020-03-27 | 安徽工程大学 | Rotary magnetorheological damper |
| CN110608261B (en) * | 2019-09-23 | 2022-01-04 | 安徽誉林汽车部件有限公司 | Hydraulic suspension |
| CN111219437B (en) * | 2020-01-20 | 2021-07-20 | 同济大学 | A magnetorheological particle damper with energy recovery |
| CN112460181A (en) * | 2020-11-30 | 2021-03-09 | 重庆理工大学 | Impact-resistant buffer based on permanent magnet excitation |
| CN113931965B (en) * | 2021-10-29 | 2023-08-08 | 北京小米移动软件有限公司 | Electromagnetic damper and printer |
| CN114867214B (en) * | 2022-06-02 | 2023-06-09 | 吉安满坤科技股份有限公司 | Processing method of vehicle-mounted printed circuit board capable of preventing orifice from sinking |
| CN115163723B (en) * | 2022-08-11 | 2023-06-09 | 甘肃盛宏建筑工程有限责任公司 | Magneto-rheological variable damping vibration attenuation energy consumption device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61211546A (en) * | 1985-03-15 | 1986-09-19 | Nippon Denso Co Ltd | Magnetic fluid damper |
| EP1908985A1 (en) * | 2006-10-02 | 2008-04-09 | Delphi Technologies, Inc. | Twin-tube magnetorheological damper |
| WO2013059951A1 (en) * | 2011-10-27 | 2013-05-02 | Pontificia Universidad Catolica De Chile | Magnetorheological damper |
| CN103303087A (en) * | 2013-06-25 | 2013-09-18 | 吉林大学 | Control system for semi-active suspension frame of magnetorheological damper |
| CN205190627U (en) * | 2015-10-19 | 2016-04-27 | 苏州宝时得电动工具有限公司 | Vibration damper and have this vibration damper's power tool |
| CN105909722A (en) * | 2016-06-17 | 2016-08-31 | 江苏大学 | Damping-adjustable shock absorber using magnetorheological fluid |
| CN106168266A (en) * | 2016-08-11 | 2016-11-30 | 张广 | A kind of double rod by-pass type magneto-rheological vibration damper |
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2017
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