CN103511547A - Self-sensing magnetorheological damper adopting spiral damping channel - Google Patents
Self-sensing magnetorheological damper adopting spiral damping channel Download PDFInfo
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- CN103511547A CN103511547A CN201310520291.2A CN201310520291A CN103511547A CN 103511547 A CN103511547 A CN 103511547A CN 201310520291 A CN201310520291 A CN 201310520291A CN 103511547 A CN103511547 A CN 103511547A
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Abstract
The invention discloses a self-sensing magnetorheological damper adopting a spiral damping channel. The self-sensing magnetorheological damper comprises a working cylinder and a piston, wherein the piston is arranged inside the working cylinder and divides the working cylinder into a cavity I and a cavity II; the cavity I and the cavity II are filled with a magnetorheological material; an excitation coil and the spiral damping channel, which is used for enabling the magnetorheological material to flow in the cavity I and the cavity II, are arranged on the piston; the magnetic field of the excitation coil penetrates the spiral damping channel. According to the magnetorheological damper provided by the invention, the damping channel is a spiral damping channel, so that the effective length of the damping channel is lengthened, the magnetic field utilization ratio is increased, and the power consumption of the magnetorheological damper during adjustment is reduced.
Description
Technical field
The present invention relates to Vibrant buffer technical field, relate in particular to a kind of adopt spiral damping passage from perceptive type MR damper.
Background technique
MR damper is to take magnetic flow liquid as packing material, by means of magnetic flow liquid under the effect in magnetic field, the characteristic that can change within the time of Millisecond and the intelligent damping device that is developed into, it is widely used in the fields such as vehicle, Aero-Space, heavy machinery and weapons.In practical application, the size of the damping force of MR damper output can realize step-less adjustment by controller according to demand, but adjustment process need consume electric energy, therefore the effective length that how to extend damp channel, to improve the utilization ratio in magnetic field, and then reduce the power consumption of MR damper in adjustment process, be the target that those skilled in the art pursue always.
Summary of the invention
In view of this, the invention provides a kind of MR damper, can extend the effective length of damp channel, improve magnetic field utilization ratio, reduce the power consumption of MR damper in adjustment process.
The invention discloses a kind of MR damper, comprise clutch release slave cylinder and piston, described piston is arranged in described clutch release slave cylinder described clutch release slave cylinder is divided into chamber I, II, described chamber I, II are all filled with magnetorheological materials, field coil is set on described piston and for described magnetorheological materials mobile spiral damping passage between described chamber I, II, the magnetic field of described field coil is through described spiral damping passage.
Further, described piston comprises piston head I, II, and described piston head I, II form " work " font groove, and described field coil is wound in described " work " font groove, and the two ends of described " work " font groove arrange described spiral damping passage vertically.
Further, on the surface at described " work " font groove two ends, embed after non-magnetic copper ring, on the surface at described " work " font groove two ends, process described spiral damping passage.
Further, on the surface at described " work " font groove two ends, process the described axial spiral damping passage that the degree of depth is greater than described copper ring wall thickness.
Further, described piston head I, II are made by soft magnetic material.
Further, the rotation direction of described spiral damping passage is clockwise or counterclockwise, and described spiral damping passage is single head or bull structure.
Further, the sectional shape of described spiral damping passage is rectangle, trapezoidal or zigzag fashion.
Further, on described piston head I or II, be provided with wire guide.
Further, also comprise be positioned at chamber I or II inflatable, compression accumulation of energy capsule, on described clutch release slave cylinder, be provided with inflation inlet, described inflation inlet and described accumulation of energy capsule form airtight chamber III.
Further, also comprise and be arranged on the pressure transducer of inflation inlet and external controller, described controller according to the pressure signal of the described accumulation of energy capsule of described pressure transducer collection realize described MR damper state from perception.
Beneficial effect of the present invention:
Due to the damp channel for magnetic flow liquid circulation on piston is designed to spiral, therefore solved traditional by damp channel design the short problem of damp channel effective length on piston time, by extending the effective length in damping energy road, improve magnetic field utilization ratio, reduced the power consumption of MR damper in adjustment process.
Inflation inlet place at accumulation of energy capsule arranges pressure transducer, because the pressure signal of pressure transducer collection can react the operating state signal of MR damper, therefore controller according to this pressure signal can realize MR damper state from perception, thereby again by existing out of Memory in conjunction with running state, can provide field coil control signal more accurately.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the embodiment's of MR damper provided by the invention structural representation.
Fig. 2 is the embodiment's of axial spiral damping passage structural representation.
Embodiment
Please refer to Fig. 1, is the embodiment's of MR damper provided by the invention structural representation, and it comprises: clutch release slave cylinder, piston, piston rod 14 and accumulation of energy capsule 4.
Wherein piston mainly consists of piston head I7, field coil 8, piston head II9 and guider 10, and clutch release slave cylinder consists of urceolus 5 and bottom 2, and urceolus 5 adopts screw thread to fix with bottom 2; Piston is arranged in clutch release slave cylinder, and clutch release slave cylinder is divided into chamber I and chamber II, and piston rod 14 one end is fixed on piston, and the other end is through chamber II and stretch out clutch release slave cylinder.
In the present embodiment, piston is provided with field coil 8 and spiral damping passage.Concrete, piston head I7 and piston head II9 form I-shaped groove in order to coiling field coil 8, and piston head I7 or piston head II9 have wire guide, in order to the wire that connects field coil is passed.The surface of piston head I7 and piston head II9 embeds to be had after non-magnetic copper ring, then working depth is greater than the axial spiral damping passage of copper ring wall thickness on piston head I7, piston head II9.Field coil 8 is after energising, and field coil 8, through piston head I7, through spiral damping passage, by urceolus 5, is got back to through piston head II9 in the magnetic field of generation.
In the present embodiment, piston head I7 and piston head II9 can adopt soft magnetic material, for example: adopt electrical pure iron.
In the present embodiment, in the middle of piston rod 14, have through hole, in order to providing the wire of electric current to draw for field coil.
In the present embodiment, spiral damping passage can for single head or bull, be illustrated as and adopt single head.
In the present embodiment,, the direction of spiral damping passage can, for clockwise or counterclockwise, be illustrated as employing clockwise direction.
In the present embodiment, the sectional shape of spiral damping passage can be rectangle, trapezoidal, zigzag fashion, and diagram adopts rectangular configuration.
In the present embodiment, MR damper is cylindrical shape, and corresponding urceolus 5, piston head 7, piston head 9, piston ring 10 are cylindrical structure.
In the present embodiment, piston rod 14 stretches out the joint of clutch release slave cylinder will carry out encapsulation process, and sealing configuration consists of supporting base 11, guide holder 12, backbone sealing ring 13, and urceolus 5 ends are inwardly pressed reinforced seal is compressed through sealing load machine.
In the present embodiment, chamber I and chamber II are all filled with magnetorheological materials 6, and this magnetorheological materials can, for magnetic flow liquid, magneto-rheological grease, magnetorheological viscoelastic fluid, be preferably magnetorheological viscoelastic fluid.Magnetic flow liquid is the suspension being mixed by the small soft magnetic particles of high magnetic permeability, low magnetic hysteresis and non-magnetic liquid.But the static soft magnetic particles of magnetic flow liquid when growing understood sedimentation, and then causes the inefficacy of damper.Magneto-rheological grease is the mixture being formed by the small soft magnetic particles of high magnetic permeability, low magnetic hysteresis and non-magnetic grease.Although solved the sedimentation of magnetic flow liquid, easily occurred a minute oily phenomenon during the poor and extruding of the hot properties of magneto-rheological grease.Magnetorheological viscoelastic fluid is a kind of brand-new controlled fluid material, its carrier fluid adopts silica-based viscoelastic fluid, temperature accommodation wide (70 to 230 degrees Celsius), shear yield stress can reach 120 kPas, response time is about 50 milliseconds, magnetic control viscosity regulation range wide (approximately 15 to 20 times), compressible 10% to 15% in plus load effect lower volume, there is not for a long time sedimentation.
In the present embodiment, due to spiral damping passage, therefore with traditional gap location that damp channel is arranged on to clutch release slave cylinder and piston and for the structure of form of straight lines, compare, increased the effective length of damp channel, make magnetorheological materials in spiral damping passage, can stop piston rod 14 move and form great damping force, meet Vibrant buffer requirement.
In the present embodiment, when piston rod 14 stretches, magnetorheological materials flows to chamber II by chamber I, because piston rod 14 is drawn out clutch release slave cylinder, can in damp channel, form idle stroke; When piston rod 14 compression, magnetorheological materials flows to chamber I by chamber II, because piston rod 14 enters clutch release slave cylinder, because magnetorheological materials is difficult for compression, can stop the motion power consumption of damper.Therefore need to carry out volume compensation to piston rod 14.Therefore, in a kind of embodiment, also comprise accumulation of energy capsule 4, accumulation of energy capsule is installed in chamber II, forms airtight chamber's III with inflation inlet 3.
In the present embodiment, inflation inlet 3 for the compressible gas that is filled with stable in properties (for example: nitrogen) and screw in pressure transducer.
In the present embodiment, the compressible gas that the gas being filled with in chamber III is stable in properties, for example: nitrogen.
In the present embodiment, when piston rod 14 stretches, because piston rod 14 is drawn out cylinder 5, and then accumulation of energy capsule is expanded, the pressure of chamber III inside reduces; During piston rod compression, because piston rod 14 enters out cylinder 5, and then make the compression of accumulation of energy capsule, the pressure of chamber III inside increases; Chamber III internal pressure changes, and then makes the variation of the pressure sensor signal of screw-in.
In the present embodiment, bottom 2 centers are porose for compensation capsule 4 is stretched out to clutch release slave cylinder, and compensation capsule 4 is fixed on to clutch release slave cylinder.
In the present embodiment, compensation capsule 4 is equipped with seal ring with bottom 2 contact segments, in order to sealed magnetic rheo-material.
In the present embodiment, also comprise base 1, controller, controllable current source, pressure transducer.Base 1 is MR damper and being connected of the strong point, and protects pressure transducer not contact with the strong point; Controller is in conjunction with the signal output control signal of oscillating signal and pressure transducer, and controllable current source is according to the control signal of controlling output, and output is controlled electric current accordingly to field coil, and then changes the damping force of damper.
Finally explanation is, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technological scheme of the present invention, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. a MR damper, comprise clutch release slave cylinder and piston, described piston is arranged in described clutch release slave cylinder described clutch release slave cylinder is divided into chamber I, II, described chamber I, II all fill magnetorheological materials, it is characterized in that: field coil is set on described piston and for described magnetorheological materials mobile spiral damping passage between described chamber I, II, the magnetic field of described field coil is through described spiral damping passage.
2. MR damper as claimed in claim 1, it is characterized in that: described piston comprises piston head I, II, described piston head I, II form " work " font groove, described field coil is wound in described " work " font groove, and the two ends of described " work " font groove arrange described spiral damping passage vertically.
3. MR damper as claimed in claim 2, is characterized in that: the surface at described " work " font groove two ends embeds after non-magnetic copper ring, on the surface at described " work " font groove two ends, processes described spiral damping passage.
4. MR damper as claimed in claim 3, is characterized in that: on the surface at described " work " font groove two ends, process the described axial spiral damping passage that the degree of depth is greater than described copper ring wall thickness.
5. the MR damper as described in any one in claim 2-4, is characterized in that: described piston head I, II are made by soft magnetic material.
6. the MR damper as described in any one in claim 2-4, is characterized in that: the rotation direction of described spiral damping passage is for clockwise or counterclockwise, and described spiral damping passage is single head or bull structure.
7. the MR damper as described in any one in claim 2-4, is characterized in that: the sectional shape of described spiral damping passage is rectangle, trapezoidal or zigzag fashion.
8. the MR damper as described in any one in claim 2-4, is characterized in that: on described piston head I or II, be provided with wire guide.
9. the MR damper as described in any one in claim 1-4, it is characterized in that: also comprise be positioned at chamber I or II inflatable, compression accumulation of energy capsule, the inflation inlet that promising described accumulation of energy capsule inflation is set on described clutch release slave cylinder, described inflation inlet and described accumulation of energy capsule form airtight chamber III.
10. MR damper as claimed in claim 9, it is characterized in that: also comprise and be arranged on the pressure transducer of inflation inlet and external controller, described controller according to the pressure signal of the described accumulation of energy capsule of described pressure transducer collection realize described MR damper state from perception.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310520291.2A CN103511547A (en) | 2013-10-28 | 2013-10-28 | Self-sensing magnetorheological damper adopting spiral damping channel |
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| CN201310520291.2A CN103511547A (en) | 2013-10-28 | 2013-10-28 | Self-sensing magnetorheological damper adopting spiral damping channel |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742583A (en) * | 2014-02-05 | 2014-04-23 | 吉林大学 | Multistage spiral magnetorheological absorber piston assembly |
| CN104179876A (en) * | 2014-08-12 | 2014-12-03 | 福建工程学院 | Bipolar corrugated plate magnetorheological damper |
| CN104455159A (en) * | 2014-11-25 | 2015-03-25 | 重庆耀勇减震器有限公司 | Double-cylinder small-hole throttling hydraulic damping motorcycle shock absorber |
| CN105065555A (en) * | 2015-07-20 | 2015-11-18 | 常州大学 | Single-rod multistage diffraction active double-control variable damping magneto-rheological damper |
| CN105485236A (en) * | 2016-01-04 | 2016-04-13 | 重庆大学 | Magneto-rheological buffering device |
| CN105485242A (en) * | 2016-01-20 | 2016-04-13 | 衢州职业技术学院 | Magneto-rheological suspension device |
| CN107575522A (en) * | 2017-07-25 | 2018-01-12 | 东南大学 | A kind of magnetorheological mud damper of foraminous spiral tract |
| CN108036014A (en) * | 2017-12-21 | 2018-05-15 | 四川建筑职业技术学院 | A kind of MR damper sealing piston equipped with spiral damping passage |
| CN110088498A (en) * | 2016-12-26 | 2019-08-02 | 日立汽车系统株式会社 | Cylinder assembly |
| CN113606276A (en) * | 2021-08-12 | 2021-11-05 | 重庆大学 | Circumferential array spiral groove piston anti-settling magnetorheological damper |
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| CN2816483Y (en) * | 2005-08-04 | 2006-09-13 | 浙江大学 | Minisize-automatic magnetic-current variation intelligent shock-adsorption device |
| CN1865729A (en) * | 2006-06-21 | 2006-11-22 | 天津大学 | Spiral groove structured magneto-rheological damper |
| CN1871447A (en) * | 2003-10-22 | 2006-11-29 | 通用汽车公司 | Magnetorheological fluid damper |
| CN101555922A (en) * | 2009-05-13 | 2009-10-14 | 东南大学 | Spiral-hole type viscous damper |
| CN202833830U (en) * | 2012-10-22 | 2013-03-27 | 成都市翻鑫家科技有限公司 | Twin-stage magnetorheological fluid damper |
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2013
- 2013-10-28 CN CN201310520291.2A patent/CN103511547A/en active Pending
Patent Citations (5)
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| CN1871447A (en) * | 2003-10-22 | 2006-11-29 | 通用汽车公司 | Magnetorheological fluid damper |
| CN2816483Y (en) * | 2005-08-04 | 2006-09-13 | 浙江大学 | Minisize-automatic magnetic-current variation intelligent shock-adsorption device |
| CN1865729A (en) * | 2006-06-21 | 2006-11-22 | 天津大学 | Spiral groove structured magneto-rheological damper |
| CN101555922A (en) * | 2009-05-13 | 2009-10-14 | 东南大学 | Spiral-hole type viscous damper |
| CN202833830U (en) * | 2012-10-22 | 2013-03-27 | 成都市翻鑫家科技有限公司 | Twin-stage magnetorheological fluid damper |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742583A (en) * | 2014-02-05 | 2014-04-23 | 吉林大学 | Multistage spiral magnetorheological absorber piston assembly |
| CN104179876A (en) * | 2014-08-12 | 2014-12-03 | 福建工程学院 | Bipolar corrugated plate magnetorheological damper |
| CN104455159A (en) * | 2014-11-25 | 2015-03-25 | 重庆耀勇减震器有限公司 | Double-cylinder small-hole throttling hydraulic damping motorcycle shock absorber |
| CN105065555A (en) * | 2015-07-20 | 2015-11-18 | 常州大学 | Single-rod multistage diffraction active double-control variable damping magneto-rheological damper |
| CN105485236A (en) * | 2016-01-04 | 2016-04-13 | 重庆大学 | Magneto-rheological buffering device |
| CN105485242A (en) * | 2016-01-20 | 2016-04-13 | 衢州职业技术学院 | Magneto-rheological suspension device |
| CN110088498A (en) * | 2016-12-26 | 2019-08-02 | 日立汽车系统株式会社 | Cylinder assembly |
| CN107575522A (en) * | 2017-07-25 | 2018-01-12 | 东南大学 | A kind of magnetorheological mud damper of foraminous spiral tract |
| CN108036014A (en) * | 2017-12-21 | 2018-05-15 | 四川建筑职业技术学院 | A kind of MR damper sealing piston equipped with spiral damping passage |
| CN113606276A (en) * | 2021-08-12 | 2021-11-05 | 重庆大学 | Circumferential array spiral groove piston anti-settling magnetorheological damper |
| CN113606276B (en) * | 2021-08-12 | 2022-06-21 | 重庆大学 | Circumferential array spiral groove piston anti-settling magnetorheological damper |
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