CN102135154A - Alnico piston-type magneto-rheological damper with single piston rod - Google Patents
Alnico piston-type magneto-rheological damper with single piston rod Download PDFInfo
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- CN102135154A CN102135154A CN 201110065177 CN201110065177A CN102135154A CN 102135154 A CN102135154 A CN 102135154A CN 201110065177 CN201110065177 CN 201110065177 CN 201110065177 A CN201110065177 A CN 201110065177A CN 102135154 A CN102135154 A CN 102135154A
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- Prior art keywords
- piston
- magnet steel
- alnico
- steel piston
- piston rod
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- 229910000828 alnico Inorganic materials 0.000 title abstract 8
- 229910000831 Steel Inorganic materials 0.000 claims description 75
- 239000010959 steel Substances 0.000 claims description 75
- 239000007788 liquid Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 3
- 238000013016 damping Methods 0.000 abstract description 22
- 239000012530 fluid Substances 0.000 abstract 1
- 230000005672 electromagnetic field Effects 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The invention provides an alnico piston-type magneto-rheological damper with a single piston rod, comprising a working cylinder, a piston, a piston rod and a compensating gasbag, wherein the working cylinder is filled with magneto-rheological fluid; the piston consists of alnico; the middle part of the piston is wound by an exciting coil and a magnetizing/demagnetizing coil; the alnico piston can be magnetized or demagnetized by a control power supply so that the alnico piston has certain magnetic field intensity, therefore, the alnico piston-type magneto-rheological damper with the single piston rod has certain output damping force; and subsequently the output damping force of the alnico piston-type magneto-rheological damper with the single piston rod can be adjusted by changing the size and the direction of a current input in the alnico piston exciting coil.
Description
Technical field
The invention belongs to a kind of MR damper, be specifically related to a kind of single rod magnet steel piston magneto-rheological damper.
Background technique
The size of the damping force of common single outstretch pole magnetorheological damper output can be carried out remote stepless by the control power supply and be regulated, but this adjusting is to need consumed power at any time, and, when common MR damper is zero (that is: field current is zero) at the control electric power outputting current, because of the magnetic intensity in the gap between piston and clutch release slave cylinder is zero, the viscosity of the magnetic flow liquid in the gap is minimum and damping force is less, so, in case control power supply or piston field coil break down, the damping force of Yin Putong single outstretch pole magnetorheological damper output is less and be difficult to the proper functioning of the system that guarantees.
Summary of the invention
For overcoming existing single outstretch pole magnetorheological damper less and bigger deficiency of power consumption of damping force when field current is zero, the present invention proposes a kind of single rod magnet steel piston magneto-rheological damper, the magnet steel piston of single rod magnet steel piston magneto-rheological damper can utilize the control power supply by filling degaussion coil it is magnetized or demagnetizing at any time, therefore, at first can make the magnet steel piston reach predetermined work magnetic intensity, and then regulate the control power supply and output on the magnet steel piston size and Orientation of electric current in the field coil, just make the direction of the electromagnetic field that field coil produces and size is consistent with the magnetic field of magnet steel piston or on the contrary, that is: reach the purpose that the size of single rod magnet steel piston magneto-rheological damper output damping force is controlled by the magnetic intensity that strengthens or weaken the magnet steel piston, since the magnet steel piston magnetize or demagnetize after reached near predetermined work magnetic intensity or the predetermined work magnetic intensity, therefore, required electric energy of further adjusting to its output damping force will reduce and energy-conservation greatly, in addition, since the magnet steel piston magnetize or demagnetize after had certain work magnetic intensity, so, in case control power supply or piston field coil break down, the damping force of single rod magnet steel piston magneto-rheological damper output still can guarantee the proper functioning of system.Therefore, single rod magnet steel piston magneto-rheological damper has the advantage of the energy-saving safe of conveniently controlling of common single outstretch pole magnetorheological damper and permanent magnet type magnetic current variable damper simultaneously.
The technical solution adopted in the present invention is as follows:
A kind of single rod magnet steel piston magneto-rheological damper, it comprises clutch release slave cylinder, piston, piston rod and compensation air bag, in clutch release slave cylinder, be full of magnetic flow liquid, described piston is made of magnet steel, be wound with field coil and fill degaussion coil at the piston middle part, piston rod is made of non-magnet_conductible material, and there is through hole at the piston rod center, and the field coil at piston middle part and the guide line that fills degaussion coil are drawn by the piston rod central through bore.
Function of the present invention is achieved in that at first utilizes the control power supply that the degaussion coil that fills at magnet steel piston middle part is switched on, make the work magnetic intensity of magnet steel piston by magnetizing or demagnetizing and reach predetermined, like this, when magnet steel piston field coil no electric circuit, magnet steel piston with work magnetic intensity will produce certain magnetic field on the gap of piston external diameter and clutch release slave cylinder internal diameter, the viscosity of the magnetic flow liquid in the gap is uprised, when piston rod drive magnet steel piston moves in clutch release slave cylinder, will under predetermined work damping force, move; When magnet steel piston field coil feeds forward current, when the electromagnetic field that magnet steel piston field coil energising back is produced is consistent with the magnetic direction of magnet steel piston, this will make the magnetic intensity in magnet steel piston external diameter and the clutch release slave cylinder internal diameter gap higher, the viscosity of the magnetic flow liquid in the gap is higher, when piston rod drive magnet steel piston moves, will be subjected to bigger damping force in clutch release slave cylinder; When magnet steel piston field coil feeds back current, when the electromagnetic field that is produced after magnet steel piston field coil is switched on is opposite with the magnetic direction of magnet steel piston, this will make the magnetic intensity in piston external diameter and the clutch release slave cylinder internal diameter gap reduce, the viscosity of the magnetic flow liquid in the gap descends, when piston rod drive magnet steel piston moves, will be subjected to less damping force in clutch release slave cylinder; When magnet steel piston field coil feeds back current, when the electromagnetic field that is produced after magnet steel piston field coil is switched on is opposite with the magnetic field equal and opposite in direction of magnet steel piston and direction, to make magnetic intensity in magnet steel piston external diameter and the clutch release slave cylinder internal diameter gap drop to minimum like this and during near zero magnetic field, the viscosity minimum of the magnetic flow liquid in the gap, when piston rod drive magnet steel piston moves, will be subjected to minimal damping power in clutch release slave cylinder; Therefore, compare with common single outstretch pole magnetorheological damper, since the magnet steel piston of single rod magnet steel piston magneto-rheological damper through magnetizing or demagnetize after reached near predetermined work magnetic intensity or the predetermined work magnetic intensity, it is energy-conservation so the control power supply exports to it that damping force regulates that required electric energy will reduce greatly by field coil on the magnet steel piston, simultaneously, because of utilizing the control power supply that the magnet steel piston is magnetized at any time or demagnetizing operation, make the magnet steel piston have certain magnetic intensity, even control power supply or magnet steel piston field coil breaks down like this, damping force that also can the output of bonding rod magnet steel piston magneto-rheological damper can be kept the proper functioning of system.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention, and N among the figure and S are the magnetic direction of magnet steel piston after magnetizing.
Fig. 2 is the present invention when work, the schematic representation that concerns of input current and output damping force, and the F among the figure is a damping force, I is an electric current.
Fig. 3 and Fig. 4 are the present invention when work, the schematic representation that concerns of the input current of magnet steel piston when being filled with different magnetic field intensity and output damping force.
Fig. 5 is an another kind of structural representation of the present invention, and the magnet steel piston is fixed on the two ends of cylindrical magnet steel 16 by soft iron ring 17 and soft iron ring 18 and constitutes.
Embodiment
Describe structure of the present invention in detail below in conjunction with accompanying drawing:
Referring to Fig. 1, this is a kind of concrete structure of the present invention, and it comprises clutch release slave cylinder 3, piston 5, piston rod 9 and compensation air bag 1; Piston 5 is made of magnet steel, be wound with field coil 6 at magnet steel piston 5 middle parts and fill degaussion coil 14, field coil 6 and fill the guide line 11 of degaussion coil 14 and guide line 15 is drawn the back from piston rod 9 central through bores 10 and joined with control power supply 13, magnet steel piston 5 is installed in the clutch release slave cylinder 3, the external diameter of magnet steel piston 5 is less than the internal diameter of clutch release slave cylinder 3 and leave magnetic flow liquid 4 flow gap 12, one end of the piston rod 9 that is made of non-magnet_conductible material and an end of magnet steel piston 5 are fixed, the other end of piston rod 9 stretches out from clutch release slave cylinder 3 one ends by the seal ring 7 and the bearing 8 of clutch release slave cylinder 3 end faces, compensation air bag 1 is positioned at clutch release slave cylinder 3 bottoms, in compensation air bag 1, be filled with pressurized air 2, in clutch release slave cylinder 3, be full of magnetic flow liquid 4.
At first utilize control power supply 13 to magnetize or demagnetize by the 14 pairs of magnet steel pistons 5 of degaussion coil that fill at magnet steel piston 5 middle parts, make magnet steel piston 5 reach predetermined work magnetic intensity, like this when controlling power supply 13 not to magnet steel piston field coil 6 output currents, the magnet steel piston 5 that is filled with certain magnetic field will produce certain magnetic field on the gap 12 of magnet steel piston 5 external diameters and clutch release slave cylinder 3 internal diameters, the viscosity of the magnetic flow liquid 4 in the gap 12 is uprised, when piston rod 9 drive magnet steel pistons 5 move in clutch release slave cylinder 3, the work damping force that will be scheduled to, i.e. F0 among Fig. 2.
When control power supply 13 is exported forward currents to magnet steel piston field coil 6, when making the direction in electromagnetic field that magnet steel piston field coil 6 produced and magnet steel piston 5 magnetic fields consistent, this will make the magnetic intensity in magnet steel piston 5 external diameters and the clutch release slave cylinder 3 internal diameter gaps higher, the viscosity of the magnetic flow liquid 4 in the gap is higher, when piston rod 9 drive magnet steel pistons 5 move in clutch release slave cylinder 3, will be subjected to bigger damping force, i.e. F0 to F2 line segment among Fig. 2;
When control power supply 13 is exported back currents to magnet steel piston field coil 6, when making the direction in electromagnetic field that magnet steel piston field coil 6 produced and magnet steel piston 5 magnetic fields opposite, this will make the magnetic intensity in magnet steel piston 5 external diameters and the clutch release slave cylinder 3 internal diameter gaps 12 reduce, the viscosity of the magnetic flow liquid 4 in the gap 12 descends, when piston rod 9 drive magnet steel pistons 5 move in clutch release slave cylinder 3, will be subjected to less damping force, i.e. F0 to F1 line segment among Fig. 2;
When control power supply 13 is given magnet steel piston field coil 6 output back currents, when making the magnetic field equal and opposite in direction of electromagnetic field that energising piston field coil 6 produced and magnet steel piston 5 and direction opposite, in the time of will making magnet steel piston 5 external diameters and clutch release slave cylinder 3 internal diameter gaps 12 interior magnetic intensities reduce so also near zero magnetic field, the viscosity minimum of the magnetic flow liquid in the gap 12, when piston rod 9 drive magnet steel pistons 5 move in clutch release slave cylinder 3, will be subjected to minimal damping power, i.e. F1 among Fig. 2.
Claims (2)
1. single rod magnet steel piston magneto-rheological damper, it comprises clutch release slave cylinder, piston, piston rod and compensation air bag, in clutch release slave cylinder, be full of magnetic flow liquid, it is characterized in that: described piston is made of magnet steel, be wound with field coil and fill degaussion coil at the piston middle part, described piston rod is made of non-magnet_conductible material, and there is through hole at the piston rod center.
2. a kind of single rod magnet steel piston magneto-rheological damper as claimed in claim 1 is characterized in that: the field coil at described piston middle part is drawn by the piston rod central through bore with the guide line that fills degaussion coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110065177 CN102135154A (en) | 2011-03-18 | 2011-03-18 | Alnico piston-type magneto-rheological damper with single piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110065177 CN102135154A (en) | 2011-03-18 | 2011-03-18 | Alnico piston-type magneto-rheological damper with single piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102135154A true CN102135154A (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110065177 Pending CN102135154A (en) | 2011-03-18 | 2011-03-18 | Alnico piston-type magneto-rheological damper with single piston rod |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297232A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Single-outstretch pole ring-type piston magneto-rheological damper |
| CN102410335A (en) * | 2011-08-19 | 2012-04-11 | 谭晓婧 | Single-rod plate type magnetorheological (MR) damper |
| CN102619924A (en) * | 2012-04-20 | 2012-08-01 | 南京农业大学 | Fluid mode magneto-rheological damper |
| CN106051026A (en) * | 2016-07-26 | 2016-10-26 | 江西科技学院 | Automobile magneto-rheological damper |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6497309B1 (en) * | 2001-08-13 | 2002-12-24 | Delphi Technologies, Inc. | Magneto-rheological damper with an external coil |
| CN1587738A (en) * | 2004-07-09 | 2005-03-02 | 北京工业大学 | Inverse type magnetic flow damper |
| CN1952429A (en) * | 2005-10-17 | 2007-04-25 | 武汉理工大学 | Method for adjusting hysteresis effect of full-scale magnetorheological fluid (MR) damper |
| CN101709761A (en) * | 2009-12-23 | 2010-05-19 | 谭和平 | Single outstretch pole magnetorheological damper |
| CN101818781A (en) * | 2009-12-29 | 2010-09-01 | 重庆仪表材料研究所 | Built-in bar-type magneto-rheological damper |
| CN101832354A (en) * | 2010-01-19 | 2010-09-15 | 谭和平 | Single-output rod double-cylinder magneto-rheological damper |
| CN201953898U (en) * | 2011-03-18 | 2011-08-31 | 谭和平 | Single-rod magnetic steel piston type magnetorheological damper |
-
2011
- 2011-03-18 CN CN 201110065177 patent/CN102135154A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6497309B1 (en) * | 2001-08-13 | 2002-12-24 | Delphi Technologies, Inc. | Magneto-rheological damper with an external coil |
| CN1587738A (en) * | 2004-07-09 | 2005-03-02 | 北京工业大学 | Inverse type magnetic flow damper |
| CN1952429A (en) * | 2005-10-17 | 2007-04-25 | 武汉理工大学 | Method for adjusting hysteresis effect of full-scale magnetorheological fluid (MR) damper |
| CN101709761A (en) * | 2009-12-23 | 2010-05-19 | 谭和平 | Single outstretch pole magnetorheological damper |
| CN101818781A (en) * | 2009-12-29 | 2010-09-01 | 重庆仪表材料研究所 | Built-in bar-type magneto-rheological damper |
| CN101832354A (en) * | 2010-01-19 | 2010-09-15 | 谭和平 | Single-output rod double-cylinder magneto-rheological damper |
| CN201953898U (en) * | 2011-03-18 | 2011-08-31 | 谭和平 | Single-rod magnetic steel piston type magnetorheological damper |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410335A (en) * | 2011-08-19 | 2012-04-11 | 谭晓婧 | Single-rod plate type magnetorheological (MR) damper |
| CN102297232A (en) * | 2011-08-22 | 2011-12-28 | 重庆仪表材料研究所 | Single-outstretch pole ring-type piston magneto-rheological damper |
| CN102619924A (en) * | 2012-04-20 | 2012-08-01 | 南京农业大学 | Fluid mode magneto-rheological damper |
| CN106051026A (en) * | 2016-07-26 | 2016-10-26 | 江西科技学院 | Automobile magneto-rheological damper |
| CN106051026B (en) * | 2016-07-26 | 2018-05-25 | 江西科技学院 | A kind of automobile using MR damper |
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Owner name: CHONGQING METER MATERIALS INST Free format text: FORMER OWNER: TAN HEPING Effective date: 20110906 |
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Effective date of registration: 20110906 Address after: 400700, No. 1, Longfeng three village, Beibei District, Chongqing Applicant after: Chongqing Meter Materials Inst Address before: 400700 Chongqing city Beibei District Three Longfeng Village No. 36-18-2 Applicant before: Tan Heping |
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Application publication date: 20110727 |