CN106015437B - A kind of rank power transformation MR damper - Google Patents
A kind of rank power transformation MR damper Download PDFInfo
- Publication number
- CN106015437B CN106015437B CN201610518095.5A CN201610518095A CN106015437B CN 106015437 B CN106015437 B CN 106015437B CN 201610518095 A CN201610518095 A CN 201610518095A CN 106015437 B CN106015437 B CN 106015437B
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- China
- Prior art keywords
- magnetic
- inner cylinder
- cylinder tube
- damper
- piston
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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
- 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
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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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
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/12—Fluid damping
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid-Damping Devices (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of rank power transformation MR damper, belong to mechanical oscillation engineering field.The rank power transformation MR damper realizes that the rank of Coulomb damping power becomes output, obtains default damping force, carry out effective vibration damping by changing the distributed controll of magnetic circuit response length its effective magnetic circuit on off operating mode.Used piston has multistage electromagnetic circuit, and the inner cylinder tube section of magnetic circuit is connected by permeability magnetic material cylinder barrel with non-magnet material cylinder barrel to be formed.This rank power transformation MR damper have design it is simple, using the with strong points, damping property such as stability is high.
Description
Technical field
The present invention relates to a kind of magnetorheological vibration control technology, specially a kind of rank power transformation MR damper.
Background technology
Magnetic flow liquid be by non-colloid fine particle it is scattered be melted into formed in insulation carrier fluid with externally-applied magnetic field change and
The stable suspension of its rheological behaviour is can control, it can be changed into moment under additional magnetic fields from the liquid of free-flowing
Semi-solid even solid, shows strong controllable rheology characteristic.MR damper is the rheological behavior using magnetic flow liquid
And a kind of semi-automatic control device most with prospects developed, it has the suitable of the reliability passively controlled and active control concurrently
Ying Xing, and it is again low compared to active control energy consumption, there is wide dynamic range, fast response time, energy consumption is low, mechanical structure is simple, ring
Border strong robustness, easily control outstanding advantages of combining with microcomputer.MR damper has been widely used in vibration control system
In system, such as vehicle suspension system, Aircraft landing gear system, building earthquake protection system, stayed-cable bridge protection system, medical rehabilitation
The fields such as system.
The intelligent vibration control system being made up of MR damper in addition to MR damper, also need with stand-by power source,
The external equipments such as sensor, controller.Power supply is needed to adjust the rheology damping characteristic of magnetic flow liquid in MR damper, is passed
Sensor test structure responds, and controller calculates control command.In practical engineering application, the presence of sensor and controller can make whole
Individual vibration control system becomes relative complex, and the stability of a system is relatively low, in addition, system cost is of a relatively high.
MR damper just develops towards more intelligent, more reliable and more stable direction, is answered to meet that engineering is actual
With the demand of environment, in recent years, some separate functional blocks are integrated in the design philosophy of MR damper gradually by people institute
Concern.Meet the electric energy need of MR damper using the electricity energy harvester that external mechanical vibrations can be converted to electric energy
Ask, form self energizing MR damper system, the system will be collected using electricity energy harvester collection extraneous vibration energy
Electric energy directly feed MR damper, realize that damping automatically adjusts.But such self energizing MR damper system is present
Some shortcomings, it is usually expressed as：(1) limited energy of collection；(2) under high speed, total damping power is big, is accordingly hindered along with big viscosity
Buddhist nun's power and big Coulomb damping power occur simultaneously, and under low speed, damping force is smaller.
The content of the invention
The technical problem to be solved by the invention is to provide a kind of stable performance, the electromagnetism rheology of damping force rank change
Damper.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of rank power transformation MR damper, including non-magnetic outer cylinder, non-magnetic inner cylinder tube, magnetic conduction inner cylinder tube, piston,
Piston rod, magnet exciting coil, guider, magnetic flow liquid, sealing ring, end cap and power supply.Non-magnetic inner cylinder tube and magnetic conduction inner cylinder tube
It is set in successively in non-magnetic outer cylinder, and non-magnetic inner cylinder tube is fixedly connected with magnetic conduction inner cylinder tube；Piston rod is fixed with piston
Connection, magnet exciting coil is wrapped on piston in order, and adjacent magnet exciting coil winding method meets the equivalent magnetic of the same name that it is generated
Field direction is on the contrary, magnet exciting coil lead is drawn by the endoporus of piston rod, and is connected with power supply.
Multistage magnet exciting coil is distributed with used piston, in the case of energization, magnetic field caused by every grade of magnet exciting coil
The magnetic circuit of closure is formed along piston head, ring-type damp channel gap and inner casing barrel.Piston in non-magnetic inner cylinder tube section, due to
Inner cylinder tube not magnetic conduction in magnetic circuit, mutually should magnetic circuit corresponding to level magnet exciting coil be not turned on so that it is magnetorheological in this section of damp channel
Liquid can not activate, and show the characteristic of general fluid；Piston is in magnetic conduction inner cylinder tube section, due to the magnetic conductivity of inner cylinder tube in magnetic circuit,
Mutually should magnetic circuit corresponding to level magnet exciting coil turn on so that it is special to show certain rheology for magnetic flow liquid in this section of damp channel
Property.Therefore, being directed to application demand, magnetic circuit is adjusted by changing the method for non-magnetic inner cylinder tube and magnetic conduction inner cylinder tube axial length
The distribution of response length, the effective magnetic circuit on off operating mode of rank power transformation MR damper is controlled with this, adjusted in corresponding damp channel
The rheological behavior of magnetic flow liquid, realize that the rank of MR damper Coulomb damping power becomes output, obtain default damping force, had
Imitate vibration damping.
The axial effective length of the magnetic conduction inner cylinder tube is not less than the axial effective length of piston.
The non-magnetic inner cylinder tube uses lightweight non-magnet material, such as aluminium alloy, high molecular polymer, and magnetic conduction inner cylinder tube is adopted
With the permeability magnetic material with high magnetic permeability, such as electrical pure iron.Filled with a certain amount of magnetic in non-magnetic inner cylinder tube and magnetic conduction inner cylinder tube
Rheology liquid.
The current value that the power supply provides can be adjusted offline, and be defined as a perseverance before the work of each MR damper
Value.
The piston rod and piston carry out linear movement in the presence of guider, along bore axis.
The present invention compares possessed beneficial effect with prior art：
This rank power transformation MR damper is powered using power supply, and delivery can be adjusted offline according to using needs, and be passed through
Change the distribution of non-magnetic inner cylinder tube and magnetic conduction inner cylinder tube axial direction effective length regulation magnetic circuit response length, obtain default ideal
Rank becomes Coulomb damping power.This rank power transformation MR damper without sensing and control etc. module, structure design is simple, and cost is low,
And system application stability is of a relatively high, the vibration damping demand especially suitable for large-scale impact shock structure.
Brief description of the drawings
The structure principle chart of Fig. 1 present invention
Description of reference numerals in figure：Non-magnetic outer cylinder 1, non-magnetic inner cylinder tube 2, magnetic conduction inner cylinder tube 3, piston 4, piston rod
5, magnet exciting coil 6, guider 7, magnetic flow liquid 8, sealing ring 9, end cap 10, power supply 11.
The output relation figure of Fig. 2 electromagnetism rheological damper Coulomb damping power and piston stroke.
Embodiment
Fig. 1 is the structure principle chart of the present invention, and the present invention is a kind of rank power transformation MR damper, including non-magnetic outer shell
It is cylinder 1, non-magnetic inner cylinder tube 2, magnetic conduction inner cylinder tube 3, piston 4, piston rod 5, magnet exciting coil 6, guider 7, magnetic flow liquid 8, close
Seal ring 9, end cap 10, power supply 11.
Non-magnetic inner cylinder tube 2 and magnetic conduction inner cylinder tube 3 are fixed in non-magnetic outer cylinder 1 as inner cylinder tube, wherein, it is non-to lead
Magnetic outer cylinder 1 and non-magnetic inner cylinder tube 2 select electrical pure iron DT4 from aluminum alloy materials, magnetic conduction inner cylinder tube 3.Piston 4 is from electricity
Work pure iron DT4, and be fixedly connected with piston rod 5, seven groups of magnet exciting coils 6 are wrapped in respective pistons 4 in order, and magnet exciting coil 6 draws
Line is drawn by the endoporus of piston rod 5, and is connected with power supply 11, and magnetic is distributed with non-magnetic inner cylinder tube 2 and magnetic conduction inner cylinder tube 3
Rheology liquid 8.
The axial linear motion of piston 4 will force magnetic flow liquid 8 to flow through piston 4 and non-magnetic inner cylinder tube 2 and magnetic conduction inner casing
Damp channel between cylinder 3.Relative position between piston 4 and non-magnetic inner cylinder tube 2 and magnetic conduction inner cylinder tube 3 will determine magnetorheological damping
The output Coulomb damping power of device.A constant current is provided to MR damper using power supply 11, when the position of piston 4 is located at cylinder
Cylinder inner end cap one end, and energization magnet exciting coil 6 is distributed in non-magnetic 2 one sections of inner cylinder tube, in this case, due to non-magnetic interior
The not magnetic conduction of cylinder barrel 2 so that magnetic field caused by every grade of magnet exciting coil 6 is along piston head, ring-type damp channel gap distribution and nothing
Method forms the magnetic circuit of a closure, and the rheological characteristic of magnetic flow liquid 8 is weaker in corresponding damp channel, and makes MR damper can not
Produce corresponding Coulomb damping power；As piston is descending along bore axis, when the stroke of piston meets that one-level magnet exciting coil is produced
When raw magnetic field forms the magnetic circuit of closure along piston head, ring-type damp channel gap and magnetic conduction inner cylinder tube 3, in damp channel
Magnetic flow liquid shows certain yield stress under magnetic fields, and MR damper produces corresponding Coulomb damping power.With
The increase of the downward storke of piston 4, magnetic field caused by multistage magnet exciting coil 6 is in succession along piston head, ring-type damp channel gap
The magnetic circuit of closure is formed with magnetic conduction inner cylinder tube 3 so that MR damper adds up produce corresponding Coulomb damping power successively, its
In, the Coulomb damping power of MR damper is with the relation of the downward storke of piston 4 as shown in Fig. 2 as shown in Figure 2, this is magnetorheological
Damper is with the increase of the downward storke of piston 4, its stepped increase of Coulomb damping power.
It is distributed according to the Coulomb damping power of this MR damper, it is known that the MR damper is relatively adapted to impact to subtract
The application for aspect of shaking.
Claims (4)
1. a kind of rank power transformation MR damper, including non-magnetic outer cylinder (1), non-magnetic inner cylinder tube (2), magnetic conduction inner cylinder tube
(3), piston (4), piston rod (5), magnet exciting coil (6), guider (7), magnetic flow liquid (8), sealing ring (9), end cap (10),
Power supply (11)；
Connection between above-mentioned each component：
It is set with non-magnetic inner cylinder tube (2) and magnetic conduction inner cylinder tube (3) in non-magnetic outer cylinder (1), non-magnetic inner cylinder tube (2) and leads
There is magnetic flow liquid in magnetic inner cylinder tube (3)；Piston rod (5) is fixedly connected with piston (4), and magnet exciting coil (6) is wrapped in piston in order
(4) on, magnet exciting coil (6) lead is drawn by the endoporus of piston rod (5), and is connected with power supply (11)；It is characterized in that：
Used piston (4) is multistage electromagnetic circuit, by changing non-magnetic inner cylinder tube (2) and magnetic conduction inner cylinder tube (3) axially
The distribution of effective length regulation magnetic circuit response series, the effective magnetic circuit on off operating mode of rank power transformation MR damper is controlled with this, real
The rank of existing Coulomb damping power becomes output, obtains default damping force, carries out effective vibration damping.
A kind of 2. rank power transformation MR damper according to claim 1, it is characterised in that the non-magnetic inner cylinder tube (2)
Smoothly it is fixedly connected with magnetic conduction inner cylinder tube (3), non-magnetic inner cylinder tube (2) uses lightweight non-magnet material, and magnetic conduction inner cylinder tube (3) is adopted
With the permeability magnetic material of high magnetic permeability.
3. a kind of rank power transformation MR damper according to claim 1, it is characterised in that the power supply (11) is provided
Current value can adjust offline, and each MR damper work before be defined as a constant.
4. a kind of rank power transformation MR damper according to claim 1, it is characterised in that the magnetic conduction inner cylinder tube (3)
Axial effective length is not less than the axial effective length of piston (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518095.5A CN106015437B (en) | 2016-07-04 | 2016-07-04 | A kind of rank power transformation MR damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518095.5A CN106015437B (en) | 2016-07-04 | 2016-07-04 | A kind of rank power transformation MR damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106015437A CN106015437A (en) | 2016-10-12 |
| CN106015437B true CN106015437B (en) | 2018-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610518095.5A Expired - Fee Related CN106015437B (en) | 2016-07-04 | 2016-07-04 | A kind of rank power transformation MR damper |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838106B (en) * | 2017-03-21 | 2019-01-15 | 哈尔滨工程大学 | A kind of novel magnetorheological fluid damper |
| CN107061597A (en) * | 2017-03-21 | 2017-08-18 | 哈尔滨工程大学 | A kind of magnetorheological fluid damp vibration isolator |
| CN114412950B (en) * | 2021-12-13 | 2024-02-02 | 重庆大学 | Multistage excitation double-cylinder magnetorheological damper and control method thereof |
| CN114683286A (en) * | 2022-04-06 | 2022-07-01 | 上海应用技术大学 | Damping-controllable robot arm and control system thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4660795B2 (en) * | 2001-01-31 | 2011-03-30 | 日立オートモティブシステムズ株式会社 | Electromagnetic suspension device |
| JP2006057767A (en) * | 2004-08-20 | 2006-03-02 | Showa Corp | Mr fluid damper |
| CN100363643C (en) * | 2006-06-21 | 2008-01-23 | 天津大学 | Multistep assemblied anti-settle magnetic rheological damper |
| CN102661353B (en) * | 2012-05-30 | 2013-11-06 | 石家庄铁道大学 | Magnetorheological damper with convenience in assembly and disassembly of coil component |
| CN203627637U (en) * | 2013-10-10 | 2014-06-04 | 安徽工程大学 | Magneto-rheological fluid damper |
| CN104033525B (en) * | 2014-06-26 | 2015-12-02 | 石家庄铁道大学 | Large damping force MR damper |
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- 2016-07-04 CN CN201610518095.5A patent/CN106015437B/en not_active Expired - Fee Related
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Granted publication date: 20180102 Termination date: 20200704 |