CN106015437A - Order-variable electromagnetic rheological damper - Google Patents
Order-variable electromagnetic rheological damper Download PDFInfo
- Publication number
- CN106015437A CN106015437A CN201610518095.5A CN201610518095A CN106015437A CN 106015437 A CN106015437 A CN 106015437A CN 201610518095 A CN201610518095 A CN 201610518095A CN 106015437 A CN106015437 A CN 106015437A
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- China
- Prior art keywords
- magnetic
- inner cylinder
- cylinder tube
- piston
- damper
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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
Abstract
The invention relates to an order-variable electromagnetic rheological damper and belongs to the field of mechanical vibration engineering. The on-off states of an effective magnetic circuit of the order-variable electromagnetic rheological damper are controlled by changing the distribution of magnetic circuit responding lengths, order-variable output of coulomb damping force is achieved, preset damping force is obtained, and effective shock absorption is conducted. An adopted piston is provided with a multi-level electromagnetic circuit. An inner cylinder tube section of the magnetic circuit is formed by connecting a magnetic-permeability material cylinder tube and non-magnetic-permeability material cylinder tubes. The order-variable electromagnetic rheological damper is simple in structure, high in application pertinence and high in stability and has other shock absorption properties.
Description
Technical field
The present invention relates to a kind of magnetorheological vibration control technology, be specially a kind of rank power transformation magnetorheological
Antivibrator.
Background technology
Magnetic flow liquid be by non-colloid fine particle disperse be melted into insulation carrier fluid in formed with
Externally-applied magnetic field changes and can control the stable suspension of its rheological behaviour, and it is at additional the action of a magnetic field
Under moment can be changed into semisolid even solid from free-pouring liquid, present strong
Controllable rheology characteristic.MR damper be to utilize the rheological behavior of magnetic flow liquid and develop one
Plant semi-automatic control device most with prospects, its reliability having passive control concurrently and active
The adaptability controlled, and compare that actively to control energy consumption the lowest, have wide dynamic range, respond fast
Degree is fast, energy consumption is low, frame for movement is simple, environmental robustness is strong, easily and microcomputer control combination etc.
Outstanding advantages.MR damper has been widely used in vibration control system, such as vehicle
Suspension system, Aircraft landing gear system, building earthquake protection system, stayed-cable bridge protection system,
The fields such as medical rehabilitation system.
The intelligent vibration control system being made up of MR damper in addition to MR damper,
Also need to be equipped with the external equipments such as power supply, sensor, controller.Need power supply magnetorheological to regulate
The rheology damping characteristic of magnetic flow liquid, sensor test structural response, controller meter in antivibrator
Calculate control command.In practical engineering application, the existence of sensor and controller can make whole vibration
Control system becomes relative complex, and system stability is relatively low, it addition, system cost
Of a relatively high.
MR damper just develops towards more intelligent, more reliable and more stable direction, in order to
Meeting the demand of practical implementation environment, in recent years, more integrated separate functional blocks are in magnetic
The design philosophy of rheological damper is paid close attention to by people gradually.I.e. use external mechanical vibrations energy
Be converted to the electricity energy harvester of electric energy to meet the electrical energy demands of MR damper, formed from
Energy supply MR damper system, this system utilizes electricity energy harvester to gather extraneous vibration energy,
And the electric energy collected is directly fed MR damper, it is achieved damping is automatically adjusted.But should
Class self energizing MR damper system comes with some shortcomings, and is usually expressed as: (1) gathers
Limited energy；(2) under at a high speed, total damping power is big, accordingly along with big viscous damping forces with big
Coulomb damping power occurs simultaneously, and under low speed, damping force is less.
Summary of the invention
The technical problem to be solved is to provide a kind of stable performance, and damping force rank become
The electromagnetism rheological damper of change.
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 are set in non-magnetic outer shell successively
In cylinder, and non-magnetic inner cylinder tube and magnetic conduction inner cylinder tube are fixed and are connected；Piston rod is fixing with piston even
Connecing, magnet exciting coil is wrapped on piston in order, and adjacent magnet exciting coil winding method meets its institute
The equivalence magnetic direction of the same name generated is contrary, and magnet exciting coil lead-in wire is drawn by the endoporus of piston rod
Go out, and be connected with power supply.
The piston used is distributed multistage magnet exciting coil, in the case of energising, and every grade of excitation wire
The produced magnetic field of circle forms Guan Bi along piston head, ring-type damp channel gap and inner casing barrel
Magnetic circuit.Piston is in non-magnetic inner cylinder tube section, due to inner cylinder tube not magnetic conduction in magnetic circuit, and mutually should
The magnetic circuit that level magnet exciting coil is corresponding is not turned on so that in this section of damp channel, magnetic flow liquid cannot swash
Live, show the characteristic of general fluid；Piston is in magnetic conduction inner cylinder tube section, due to inner casing in magnetic circuit
The magnetic conductivity of cylinder, mutually should magnetic circuit conducting corresponding to level magnet exciting coil so that this section of damp channel
Middle magnetic flow liquid shows certain rheological behavior.To this end, for application demand, by changing
The method of non-magnetic inner cylinder tube and magnetic conduction inner cylinder tube axial length regulates magnetic circuit response length
Distribution, controls rank power transformation MR damper effective magnetic circuit on off operating mode with this, the corresponding resistance of regulation
The rheological behavior of magnetic flow liquid in Buddhist nun's passage, it is achieved the rank of MR damper Coulomb damping power become
Output, it is thus achieved that preset damping force, carry out effective vibration damping.
The axial effective length of described magnetic conduction inner cylinder tube is not less than the axial effective length of piston.
Described non-magnetic inner cylinder tube uses lightweight non-magnet material, such as aluminium alloy, high molecular polymerization
Thing, magnetic conduction inner cylinder tube uses the permeability magnetic material with high magnetic permeability, such as electrical pure iron.Non-magnetic
It is filled with a certain amount of magnetic flow liquid in inner cylinder tube and magnetic conduction inner cylinder tube.
The current value that described power supply provides can regulate with off-line, and in each MR damper work
A constant it is defined as before work.
Described piston rod and piston, under the effect of guider, are linearly transported along bore axis
Dynamic.
The present invention compares with prior art and is had the advantages that
This rank power transformation MR damper uses power supply to power, and delivery can be from according to application needs
Line regulates, and by changing non-magnetic inner cylinder tube and magnetic conduction inner cylinder tube axial effective length regulation magnetic
The distribution of road response length, it is thus achieved that default preferable rank become Coulomb damping power.This rank power transformation magnetic current
Mutative damp device is without modules such as sensing and controls, and structure design is simple, low cost, and system should
Of a relatively high by stability, it is particularly well-suited to the vibration damping demand of large-scale impact shock structure.
Accompanying drawing explanation
The structure principle chart of Fig. 1 present invention
Non-magnetic outer cylinder 1, non-magnetic inner cylinder tube 2, magnetic conduction inner cylinder tube 3, piston 4, piston in figure
Bar 5, magnet exciting coil 6, guider 7, magnetic flow liquid 8, sealing ring 9, end cap 10, electricity
Stream source 11
Fig. 2 electromagnetism rheological damper Coulomb damping power and the output relation figure of piston stroke.
Detailed description of the invention
Fig. 1 is the structure principle chart of the present invention, and the present invention is a kind of rank power transformation magnetorheological damping
Device, 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.
Non-magnetic inner cylinder tube 2 and magnetic conduction inner cylinder tube 3 are fixed in non-magnetic outer shell as inner cylinder tube
In cylinder 1, wherein, non-magnetic outer cylinder 1 and non-magnetic inner cylinder tube 2 aluminium alloy material,
Magnetic conduction inner cylinder tube 3 selects electrical pure iron DT4.Piston 4 selects electrical pure iron DT4, and with
Piston rod 5 is fixing to be connected, and seven groups of magnet exciting coils 6 are wrapped in respective pistons 4 in order, excitation
Coil 6 is gone between and is drawn by the endoporus of piston rod 5, and is connected with power supply 11, non-magnetic
Magnetic flow liquid 8 is distributed in inner cylinder tube 2 and magnetic conduction inner cylinder tube 3.
It is interior with non-magnetic that the axial linear motion of piston 4 will force magnetic flow liquid 8 to flow through piston 4
Damp channel between cylinder barrel 2 and magnetic conduction inner cylinder tube 3.Piston 4 and non-magnetic inner cylinder tube 2 and lead
Relative position between magnetic inner cylinder tube 3 will determine the output Coulomb damping power of MR damper.Adopt
A constant current is provided to MR damper, when the position of piston 4 is positioned at cylinder with power supply 11
Cylinder inner end cap one end, and energising magnet exciting coil 6 be all distributed in non-magnetic inner cylinder tube 2 one sections,
Under this state, due to non-magnetic inner cylinder tube 2 not magnetic conduction so that every grade of magnet exciting coil 6 is produced
Magnetic field cannot be formed along piston head, ring-type damp channel gap distribution one Guan Bi magnetic
Road, in corresponding damp channel, the rheological characteristic of magnetic flow liquid 8 is more weak, and make MR damper without
Method produces corresponding Coulomb damping power；Along with piston is descending along bore axis, when the stroke of piston
Meet magnetic field produced by one-level magnet exciting coil along piston head, ring-type damp channel gap and to lead
When magnetic inner cylinder tube 3 forms the magnetic circuit of Guan Bi, the magnetic flow liquid in damp channel is under the action of a magnetic field
Showing certain yield stress, MR damper produces corresponding Coulomb damping power.Along with
Piston 4 downward storke increases, magnetic field produced by multistage magnet exciting coil 6 in succession along piston head,
Ring-type damp channel gap and magnetic conduction inner cylinder tube 3 form the magnetic circuit of Guan Bi so that magnetorheological damping
Device is cumulative successively produces corresponding Coulomb damping power, wherein, the Coulomb damping of MR damper
The relation of power and piston 4 downward storke as in figure 2 it is shown, as shown in Figure 2, this magnetorheological damping
Device along with the increase of piston 4 downward storke, its stepped increase of Coulomb damping power.
Coulomb damping power distribution according to this MR damper, it is known that this MR damper phase
To the application being relatively suitable in terms of impact damper system.
Claims (4)
1. a 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 assembly:
Non-magnetic inner cylinder tube (2) and magnetic conduction inner cylinder tube (3) it is set with in non-magnetic outer cylinder (1),
Magnetic flow liquid is had in non-magnetic inner cylinder tube (2) and magnetic conduction inner cylinder tube (3)；Piston rod (5)
Fixing with piston (4) and be connected, magnet exciting coil (6) is wrapped on piston (4) in order, encourages
Magnetic coil (6) lead-in wire is drawn by the endoporus of piston rod (5), and is connected with power supply (11)
Connect；It is characterized in that:
The piston (4) used is multistage electromagnetic circuit, by changing non-magnetic inner cylinder tube (2)
With the distribution of magnetic conduction inner cylinder tube (3) axially effective length regulation magnetic circuit response progression, control with this
Power transformation MR damper in rank processed effective magnetic circuit on off operating mode, it is achieved the rank of Coulomb damping power become defeated
Go out, it is thus achieved that preset damping force, carry out effective vibration damping.
A kind of rank power transformation MR damper the most according to claim 1, it is characterised in that
Described non-magnetic inner cylinder tube (2) and the smooth fixing connection of magnetic conduction inner cylinder tube (3), non-magnetic interior
Cylinder barrel (2) uses lightweight non-magnet material, and magnetic conduction inner cylinder tube (3) uses leading of high magnetic permeability
Magnetic material.
A kind of rank power transformation MR damper the most according to claim 1, it is characterised in that
The current value that described power supply (11) is provided can regulate with off-line, and at each magnetorheological damping
It is defined as a constant before device work.
A kind of rank power transformation MR damper the most according to claim 1, it is characterised in that
The axial effective length of described magnetic conduction inner cylinder tube (3) is not less than the most effectively length of piston (4)
Degree.
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 true CN106015437A (en) | 2016-10-12 |
| CN106015437B 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838106A (en) * | 2017-03-21 | 2017-06-13 | 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 |
| CN114412950A (en) * | 2021-12-13 | 2022-04-29 | 重庆大学 | Multistage excitation dual-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 |
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| JP2002227927A (en) * | 2001-01-31 | 2002-08-14 | Tokico Ltd | Electromagnetic suspension equipment |
| JP2006057767A (en) * | 2004-08-20 | 2006-03-02 | Showa Corp | Mr fluid damper |
| CN1869470A (en) * | 2006-06-21 | 2006-11-29 | 天津大学 | Multistep assemblied anti-settle magnetic rheological damper |
| CN102661353A (en) * | 2012-05-30 | 2012-09-12 | 石家庄铁道大学 | Magnetorheological damper with convenience in assembly and disassembly of coil component |
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2016
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Patent Citations (6)
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| JP2002227927A (en) * | 2001-01-31 | 2002-08-14 | Tokico Ltd | Electromagnetic suspension equipment |
| JP2006057767A (en) * | 2004-08-20 | 2006-03-02 | Showa Corp | Mr fluid damper |
| CN1869470A (en) * | 2006-06-21 | 2006-11-29 | 天津大学 | Multistep assemblied anti-settle magnetic rheological damper |
| CN102661353A (en) * | 2012-05-30 | 2012-09-12 | 石家庄铁道大学 | Magnetorheological damper with convenience in assembly and disassembly of coil component |
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Non-Patent Citations (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106838106A (en) * | 2017-03-21 | 2017-06-13 | 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 |
| CN114412950A (en) * | 2021-12-13 | 2022-04-29 | 重庆大学 | Multistage excitation dual-cylinder magnetorheological damper and control method thereof |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN106015437B (en) | 2018-01-02 |
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