CN104565167B - Adaptive variable-stiffness linear magnetic liquid damping vibration absorber - Google Patents
Adaptive variable-stiffness linear magnetic liquid damping vibration absorber Download PDFInfo
- Publication number
- CN104565167B CN104565167B CN201410838087.XA CN201410838087A CN104565167B CN 104565167 B CN104565167 B CN 104565167B CN 201410838087 A CN201410838087 A CN 201410838087A CN 104565167 B CN104565167 B CN 104565167B
- Authority
- CN
- China
- Prior art keywords
- magnetic
- damping
- vibration
- exciting coil
- magnet exciting
- 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.)
- Expired - Fee Related
Links
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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/103—Devices with one or more members moving linearly to and fro in chambers, any throttling effect being immaterial, i.e. damping by viscous shear effect only
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to an adaptive variable-stiffness linear magnetic liquid damping vibration absorber and belongs to the field of engineering vibration. The vibration absorber mainly comprises a column permanent magnet serving as an inertia mass block, a magnetic reed structure and damping. Magnetic field attraction of the column permanent mass block and a magnet exciting coil drives the magnetic reed structure to generate restoring force. An induction coil arranged outside the middle of a round tube collects the external vibration energy and supports the electric energy collected to the magnet exciting coil in real time, accordingly regulating the stiffness of the magnetic reed. The damping of the vibration absorber is composed of electromagnetic damping of the induction coil and viscous damping of the magnetic liquid. By adjusting inherent frequency of a magnetic reed stiffness adjusting system to close to the vibration frequency of an exciting source, relative displacement of the inertia mass block and the wall is increased, collecting energy and damping are improved, and vibration absorption is strengthened. The adaptive variable-stiffness linear magnetic liquid damping vibration absorber is simple in design and good in vibration absorption.
Description
Technical field
The present invention relates to a kind of self adaptation variation rigidity Linear magnetic fluid damper, the vibroshock is a kind of passive resistance
Buddhist nun's vibration insulating system, belongs to mechanical engineering vibration field.
Background technology
Magnetic liquid is a kind of to be scattered in liquid by the nanometer ferromagnetism or ferrimagnetic particles that are coated with surfactant
The stable colloidal suspension liquid formed in carrier fluid, it is therein that magnetic liquid second order law of buoyancy refers to that magnetic liquid will can be immersed in
The proportion permanent magnet bigger than its own suspends.Magnetic liquid can be seen as a kind of self-service lubricant, can be with permanent magnetism
Body is moved together, and permanent magnet is suspended without the need for power consumption, and motor process is subject to relatively low frictional force to act on.So cause absorption
Be magnetic liquid permanent magnet vibrate to external world caused inertia force-responsive sensitivity it is higher.
Magnetic liquid can be applicable to damping vibration attenuation, and magnetic liquid damping vibration attenuation is a kind of new vibration damping mode, to inertia
The sensitivity of power is higher, and has the advantages that simple structure, small volume, power consumption be big and life-span length.Magnetic fluid damper
For passive damping vibration insulating system, the most structure of such vibroshock is fixed, and corresponding natural frequency is non-adjustable, does not possess and shakes to external world
Dynamic adaptivity.Generally need to consider by the frequency of vibration of vibration damping object during design magnetic liquid vibroshock, and then
Vibroshock is targetedly designed, because only when the frequency of vibration of vibroshock is close to the natural frequency by vibration damping object, vibration damping
Effect is optimum.But common extraneous vibration has uncertainty, its frequency of vibration change at random so that common with fixed frequency
The magnetic liquid vibroshock adaptivity of rate is poor, and corresponding effectiveness in vibration suppression is limited.
The content of the invention
The technical problem to be solved is：There is provided a kind of effectiveness in vibration suppression excellent self adaptation variation rigidity Linear magnetic
Fluid damper, the vibroshock has stiffness tuning adaptivity, the adjustable characteristic of itself frequency of vibration.
The technical solution adopted for the present invention to solve the technical problems is：
Self adaptation variation rigidity Linear magnetic fluid damper, the device is by end cap, conduit, cylindrical permanent magnets, magnetic
Liquid, induction coil, energy management circuit, magnet exciting coil, armature, fixed plate composition.
The passive damping damper system is made up of inertial mass, magnetic red structure and damping.Wherein inertial mass is
Both ends of the surface are adsorbed with the cylindrical permanent magnets of magnetic liquid, understand cylindrical permanent magnets in magnetic by the second order law of buoyancy of magnetic liquid
It is suspended in conduit under the effect of magnetic pressure that liquid is provided, and does not contact with pipe inner wall, there is end cap at conduit two ends, are used for
Prevent inertial mass from sliding from conduit.Due to the lubrication of magnetic liquid, cylindrical permanent magnets ring as inertial mass
Answer the sensitivity of extraneous vibration higher.The magnetic red structure is mainly made up of cylindrical permanent magnets and magnet exciting coil, and its restoring force is concrete
Magnetic field by produced by magnet exciting coil and the attraction between the magnetic field of cylindrical permanent magnets are provided with joint efforts, and wherein cylindrical permanent magnets are located at and lead
In pipe, magnet exciting coil is located at outside conduit, and the two is rigidly connected by fixed plate, produced in diameter parallel, and magnet exciting coil
The equivalent magnetic pole of electromagnetism field direction and the corresponding pole orientation of the same name of cylindrical permanent magnets are contrary.The damping of the vibroshock is mainly by gluing
Property damping and electromagnetic damping composition, when wherein viscous damping is moved for magnetic liquid with cylindrical permanent magnets and between pipe inner wall face
Viscous force causes, and electromagnetic damping is produced by the magnetic force caused by the induction coil of vibrational energy is gathered positioned at conduit outer wall.
Magnetic field produced by magnet exciting coil is controlled by extraneous vibration energy, mainly by induction coil to the collection of vibrational energy
Realize.The electric energy that induction coil is gathered needs to be supplied to magnet exciting coil Jing after energy management circuit realizes AC/DC conversions so that encourage
Magnetic coil produces size variation, the constant magnetic field in direction.In addition, the intensity in order to increase induced field, spy is in magnet exciting coil
Between be additionally arranged one block of armature.
The vibroshock is respectively adopted induction coil and magnet exciting coil realizes that vibrational energy, to magnetic conversion of energy, causes magnet exciting coil
Magnetic field and the dependency of extraneous vibration, with this adaptivity that vibroshock natural frequency is vibrated to external world is strengthened, and realization efficiently subtracts
The purpose shaken.
The present invention is compared with prior art and had the advantage that：
Induction coil is adopted to replace permanent magnet to provide magnetic attraction for the cylindrical permanent magnets as inertial mass, the attraction
Power is the restoring force of magnetic red, and can change in response to extraneous vibration so as to inherent frequence response extraneous vibration and carry out self-regulated
Section, the nearly extraneous vibration frequency of disconnecting, does not show certain adaptivity；In addition, the damping of the vibroshock removes viscous damping
Outward, also electromagnetic damping.2 points based on more than, the vibroshock can realize the purpose of efficient vibration damping.
Description of the drawings
Fig. 1 is the sectional view of the present invention.
In figure：End cap 1, conduit 2, cylindrical permanent magnets 3, magnetic liquid 4, induction coil 5, energy management circuit 6, excitation wire
Circle 7, armature 8, fixed plate 9.
Fig. 2 is the vibroshock adaptive damping schematic diagram.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described：
The vibroshock be a kind of self adaptation variation rigidity Linear magnetic fluid damper, its structure sectional view such as Fig. 1 institutes
Show, its structure includes：End cap 1, conduit 2, cylindrical permanent magnets 3, magnetic liquid 4, induction coil 5, energy management circuit 6, excitation
Coil 7, armature 8, fixed plate 9；
The adaptivity of the vibroshock mainly realized by the magnet exciting coil 7 outside the conduit 2, magnet exciting coil 7 with lead
Pipe 2 is rigidly connected by fixed plate 9, the two axis flat pattern, is laid in magnet exciting coil 7 to increase induced field intensity spy
One column armature 8, the armature 8 is coaxial with magnet exciting coil 7.The electric energy of magnet exciting coil 7 is from the sensing for being wound in the outer wall of conduit 2
The reciprocating motion of the inertial mass of cylindrical permanent magnets 3 caused by extraneous vibration can be converted to electric energy by coil 5, induction coil 5,
The electric power signal of collection is positive negative signal, Jing after energy management circuit 6 mainly completes AC/DC conversions, is supplied to magnet exciting coil 7,
So that magnet exciting coil 7 is produced, and outgoing direction is constant, size variation electromagnetic field.
The surface adsorption of cylindrical permanent magnets 3 is magnetic liquid 4, because magnetic liquid 4 is easily to the direction flowing that magnetic field intensity is high,
Therefore in 4 layers of the both ends of the surface populated with magnetic liquid of cylindrical permanent magnets 3,4 layers of the magnetic liquid under magnetic pressure effect by column forever
Magnet 3 suspends, and with this friction is reduced, and improves response sensitivity of the inertial mass of cylindrical permanent magnets 3 to vibration.Absorption is magnetic
The cylindrical permanent magnets 3 of liquid 4 are located in conduit 2, and there is end cap 1 at the two ends of conduit 2, for preventing inertial mass in vibration processes
Come off from conduit 2.
The end cap 1, conduit 2 and fixed plate 9 are non-magnetic new material.
The available species organic oil based magnetic liquid of the magnetic liquid 4, Kerosene-Base Magnetic Fluid and ester group magnetic liquid
Body.
The vibroshock adaptive damping principle as shown in Fig. 2 such vibroshock belongs to passive damping vibration insulating system, the vibration damping
Viscous damping two parts that the electromagnetic damping and magnetic liquid that the damping of device is mainly produced by induction coil is produced are constituted, its correspondence
Natural angular frequencyWherein k, m are respectively the quality of the corresponding magnetic red rigidity of system and inertial mass.The magnetic red structure
Rigidity k=F/x be controlled by magnetic field suction and make a concerted effort the relative shift x of F and mass.Magnetic field make a concerted effort F again with the electric energy E of collection
It is related.For different resonance sources, vibration acquisition energy E and the extraneous vibration frequencies omega of the vibroshock0It is related.Divide based on more than
Analysis, it is known that the magnetic fluid damper vibration damping angular frequency ' with extraneous exciting source vibration angular frequency0One changes,
And it is constantly close.When the increase of extraneous vibration angular frequency, when vibration strengthens, collection can increase, and magnetic field energy strengthens, magnetic red rigidity
Increase, the natural angular frequency for causing vibroshock becomes big and close extraneous vibration angular frequency, on the contrary when extraneous vibration weakens, vibroshock
Frequency accordingly reduce, be equally constantly close to extraneous vibration angular frequency, show certain self adaptation so as to vibrate to external world
Property.
Claims (4)
1. self adaptation variation rigidity Linear magnetic fluid damper, including：End cap (1), conduit (2), cylindrical permanent magnets (3),
Magnetic liquid (4), induction coil (5), energy management circuit (6), magnet exciting coil (7), armature (8), fixed plate (9)；
Connection between each part mentioned above：It is fixed with positioned at conduit (2) outside and on rigidly connected fixed plate (9) therewith and contains rank
The magnet exciting coil (7) of ferrum (8), the magnet exciting coil (7) is electric by energy management with the induction coil (5) of conduit (2) outer wall winding
Road (6) is connected, and in conduit (2) cylindrical permanent magnets (3) for being adsorbed with magnetic liquid (4) are placed, and conduit (2) two ends are distributed with
End cap (1)；
It is characterized in that：The partial vibration for collecting can be in real time converted to into magnetic energy using magnet exciting coil (7) so that magnetic energy correspondence
Magnetic field and cylindrical permanent magnets (3) between produce the magnetic attraction of change, and as by cylindrical permanent magnets (3) and magnet exciting coil (7)
The restoring force of composition magnetic red structure, the magnetic red rigidity has certain adaptivity with extraneous vibration；In addition, the Linear magnetic liquid
The damping of body damping shock absorber is mainly made up of electromagnetic damping and viscous damping.
2. self adaptation variation rigidity Linear magnetic fluid damper according to claim 1, it is characterised in that the end
Lid (1), conduit (2) and fixed plate (9) are non-magnet material.
3. self adaptation variation rigidity Linear magnetic fluid damper according to claim 1, it is characterised in that described to encourage
The diameter parallel of magnetic coil (7) and cylindrical permanent magnets (3), and in magnet exciting coil (7) produced electromagnetic field equivalent magnetic pole and post
The corresponding pole orientation of the same name of shape permanent magnet (3) is contrary.
4. self adaptation variation rigidity Linear magnetic fluid damper according to claim 1, it is characterised in that the energy
Buret reason circuit (6) mainly realizes the AC-DC conversion of electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838087.XA CN104565167B (en) | 2014-12-29 | 2014-12-29 | Adaptive variable-stiffness linear magnetic liquid damping vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410838087.XA CN104565167B (en) | 2014-12-29 | 2014-12-29 | Adaptive variable-stiffness linear magnetic liquid damping vibration absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104565167A CN104565167A (en) | 2015-04-29 |
| CN104565167B true CN104565167B (en) | 2017-05-17 |
Family
ID=53081972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410838087.XA Expired - Fee Related CN104565167B (en) | 2014-12-29 | 2014-12-29 | Adaptive variable-stiffness linear magnetic liquid damping vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565167B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110985580B (en) * | 2018-06-15 | 2021-07-13 | 郑州大学 | Vibration damper |
| CN108917033B (en) * | 2018-08-13 | 2023-11-07 | 珠海格力电器股份有限公司 | Pipeline stress strain adjusting device and method and air conditioner |
| CN112196922B (en) * | 2020-10-21 | 2021-08-20 | 清华大学 | Self-adaptive active magnetic liquid vibration damping device and vibration damping method |
| CN112392886B (en) * | 2020-11-11 | 2021-06-15 | 清华大学 | Magnetic liquid vibration damper |
| CN112727973B (en) * | 2020-12-30 | 2021-11-02 | 清华大学 | Magnetic liquid vibration damper |
| CN114060451B (en) * | 2021-08-01 | 2022-08-02 | 北京工业大学 | Nonlinear-magnetorheological self-tuning vibration absorber |
| CN113738809B (en) * | 2021-08-01 | 2022-07-12 | 北京工业大学 | Variable-stiffness nonlinear energy trap vibration reduction method based on magnetic liquid suspension characteristics |
| CN113983108B (en) * | 2021-08-01 | 2022-07-29 | 北京工业大学 | Magnetorheological self-tuning vibration absorber containing three-degree-of-freedom energy trap |
| CN113719573B (en) * | 2021-08-01 | 2022-07-12 | 北京工业大学 | Two-dimensional magnetic liquid vibration absorber containing nonlinear energy trap |
| CN114110290A (en) * | 2021-11-27 | 2022-03-01 | 北京工业大学 | Nonlinear self-tuning pipeline vibration noise semi-active control method and system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756896A (en) * | 1995-09-05 | 1998-05-26 | Texas Components Corporation | Extended range accelerometer |
| CN2886208Y (en) * | 2005-10-20 | 2007-04-04 | 中国科学技术大学 | Magnetorheological elastomer active vibration absorbing system |
| CN1987373A (en) * | 2005-12-23 | 2007-06-27 | 谭成忠 | Vibration sensor based on magnetic suspension principle |
| DE102006049988A1 (en) * | 2006-10-24 | 2008-04-30 | Schaeffler Kg | Vibration damper for use in motor vehicle, has absorbing mass, which is arranged in recess of mass damper body and adjusted to excitation frequency, where absorption mass is in contact with mass damper body under influence of magnetic field |
| WO2010135383A2 (en) * | 2009-05-18 | 2010-11-25 | Resonant Systems, Inc. | Linear-resonant vibration module |
| CN102493572B (en) * | 2011-12-27 | 2013-12-18 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Adjustable damping energy storage type tuned mass damper and energy storage method thereof |
| CN103486188B (en) * | 2013-10-10 | 2015-03-18 | 重庆大学 | Self-powered magneto-rheological damper |
-
2014
- 2014-12-29 CN CN201410838087.XA patent/CN104565167B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104565167A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104565167B (en) | Adaptive variable-stiffness linear magnetic liquid damping vibration absorber | |
| CN104500640B (en) | A kind of self adaptation straight line magnetic fluid damper | |
| CN103401395A (en) | Horizontal linear vibration motor | |
| US8836178B2 (en) | Linear vibrator | |
| CN104632986B (en) | Coupled electromagnetic field particle damper with ferromagnetic end cover additionally arranged at one end and vibration reduction method of particle damper for vibration structure | |
| CN110034654A (en) | A kind of multi-direction vibration energy collector | |
| CN104393736A (en) | Planar vibration energy collector adopting magnetic liquid and permanent magnet combined structure | |
| CN108900060A (en) | Used in Boundary Lubrication of Magnetic Fluids type gap resonant frequencies vibrate electromagnetism energy accumulator | |
| CN206481204U (en) | A kind of double freedom magnetic suspension type vibration energy collecting device | |
| CN108425986B (en) | Cylindrical eddy current damping device, damping adjustment method and bridge vibration reduction structure | |
| CN104632981B (en) | Self-adaptive variable-stiffness planar magnetic liquid damping shock absorber | |
| CN105337470A (en) | Vibration energy collecting device | |
| CN104565180A (en) | Magnetic liquid damping shock absorber with magnetic straight line | |
| CN114110290A (en) | Nonlinear self-tuning pipeline vibration noise semi-active control method and system | |
| US20090212645A1 (en) | Electronic device for harvesting energy | |
| CN204284298U (en) | A kind of MR fluid shock absorber of powering based on brush | |
| CN106602835A (en) | Two-degree-of-freedom magnetic levitation vibration energy harvester and manufacturing method thereof | |
| CN210167943U (en) | Magnetic liquid plane multi-frequency vibration energy collector | |
| CN203297512U (en) | Electromagnetic vibration damper | |
| CN103378703B (en) | Linear vibrator | |
| CN210167944U (en) | Magnetic liquid plane composite multi-frequency vibration energy collector | |
| CN112491297B (en) | Piezoelectric-electromagnetic coupling energy collection device and method based on wind-induced vibration | |
| CN209692570U (en) | A kind of multi-direction vibration energy collector | |
| CN113708592A (en) | Permanent-magnet self-suspension type magnetic liquid kinetic energy collector | |
| CN208089848U (en) | Drum type brake electric eddy-current damping device and bridge vibration-proof structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20201229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |