CN101832355A - Double-out-rod adaptive double-control magneto-rheological damper - Google Patents
Double-out-rod adaptive double-control magneto-rheological damper Download PDFInfo
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- CN101832355A CN101832355A CN 201010135435 CN201010135435A CN101832355A CN 101832355 A CN101832355 A CN 101832355A CN 201010135435 CN201010135435 CN 201010135435 CN 201010135435 A CN201010135435 A CN 201010135435A CN 101832355 A CN101832355 A CN 101832355A
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Abstract
The invention discloses a double-out-rod adaptive double-control magneto-rheological damper. The double-out-rod adaptive double-control magneto-rheological damper consists of a working cylinder, a piston, a piston rod and an external linear generator, wherein two groups of excitation coils are wound on the middle part of the piston; the working cylinder is filled with magneto-rheological liquid; when the piston rod pushes the piston to move in the working cylinder, the rotor, which is fixed at one end of the piston rod, of the external linear generator is driven to move in the stator linearly to generate electric energy; the electric energy is transmitted to one group of the excitation coils of the piston so that the piston of the double-out-rod adaptive double-control magneto-rheological damper generates a magnetic field to generate a damping force; because the electric energy output by the external linear motor is in direct proportion to a movement velocity of the piston in the working cylinder, the double-out-rod adaptive double-control magneto-rheological damper can adjust the magnitude of an output the damping force thereof according to the movement velocity of the piston thereof; and the double-out-rod adaptive double-control magneto-rheological damper also can control the other group of the excitation coils on the piston of the double-out-rod adaptive double-control magneto-rheological damper through an external control power supply so that the output damping force thereof is controlled in a wider range.
Description
Technical field
The invention belongs to a kind of MR damper, be specifically related to a kind of double-out-rod adaptive double-control magneto-rheological damper.
Background technique
MR damper is a kind of intelligent vibration damping device, the size of its damping force can be carried out remote stepless by the control power supply and be regulated, therefore, common MR damper must be equipped with the control power supply and could realize MR damper is exported the purpose that damping force is regulated; People have developed permanent magnet type magnetic current variable damper in order to reduce MR damper again to the dependence of control power supply, although can not needing to control power supply, permanent magnet type magnetic current variable damper works alone, be difficult to adapt to different vibration damping occasions but the output performance of its damping force is single, for this reason, people have developed the MR damper that carries electricity generating device again, as Chinese patent application number number be: 200910103744.5 " a kind of self-powered MR damper " and application number number are: 200710034309.2 " self-power-supply magnetorheological intelligent vibration damping device ", although these the two kinds MR damper that carry electricity generating device can solve the power issue of MR damper, but they all have rotational motion mechanism and complex structure, and break down in case carry electricity generating device, this MR damper will lose damping function fully, therefore, to carry the reliability of MR damper of electricity generating device not high for this class.
Summary of the invention
At existing MR damper complicated in mechanical structure and the not high deficiency of reliability that carries electricity generating device, the present invention proposes a kind of double-out-rod adaptive double-control magneto-rheological damper, the advantage of adaptive double-control magneto-rheological damper is: the power supply that this damper only need utilize its external linear electric generator to provide just can make the damping force of its output adapt to the needs of outside vibration damping automatically, can utilize outside control power supply to come the damping force of its output is carried out wider adjusting again, therefore, the reliability of double-out-rod adaptive double-control magneto-rheological damper is higher, and double-out-rod adaptive double-control magneto-rheological damper adopts external linear electric generator that electric energy is provided, and does not have rotational motion mechanism thereby simple in structure.
Technological scheme of the present invention is as follows:
A kind of double-out-rod adaptive double-control magneto-rheological damper, it comprises clutch release slave cylinder, piston, piston rod and external linear electric generator, the piston that the middle part is wound with two groups of field coils is contained in the clutch release slave cylinder, field coil adds protective layer outward, this protective layer flushes with the piston periphery wall, leaves the mobile gap of magnetic flow liquid between piston periphery wall and protective layer and the clutch release slave cylinder inner circle wall; Two piston rods and the center of piston all have and are interconnected and through hole that diameter is identical; One end of piston rod and an end of piston are fixed, and the other end of piston rod stretches out from clutch release slave cylinder one end by the seal arrangement and the bearing of clutch release slave cylinder end face; One end of clutch release slave cylinder is fixed with external linear electric generator; The mover of external linear electric generator is fixed on an end of a piston rod, and the stator of external linear electric generator is fixed on the outside of clutch release slave cylinder one end, is full of magnetic flow liquid in the clutch release slave cylinder;
The mover of external linear electric generator is a cylindrical permanent magnet, and cylindrical permanent magnet axially is being divided into two magnetic poles; The stator of external linear electric generator by in the magnetic conductive metal cylinder axially on embed 2 groups of shapes, size, solenoid coil that the number of turn is identical constitutes, these 2 groups of coils adopt the series connection of coiling reversal connection in the same way; The external diameter of cylindrical permanent magnet is less than the internal diameter of stator cylinder shape coil and leave the free gap; The lighting outlet of one group of field coil at piston middle part leads to outside the clutch release slave cylinder by the piston rod center hole, and another group field coil at piston middle part is perfectly straight to be connect with coil on the built-in linear generating machine stator and be connected.
In addition, the mover of external linear electric generator also can by cylindrical magnetic conductive metal axially on be wound with 2 groups of shapes, size, coil that the number of turn is identical constitutes, these 2 groups of coils adopt the series connection of coiling reversal connection in the same way; The stator of external linear electric generator then is to be embedded in the magnetic conductive metal urceolus by a cylindrical shape permanent magnet to constitute, and the cylindrical shape permanent magnet is divided into two magnetic poles in the axial direction; The internal diameter of cylindrical shape permanent magnet is greater than the external diameter of mover coil and leave the free gap; The lighting outlet of one group of field coil at piston middle part leads to outside the clutch release slave cylinder by the piston rod center hole, and another group field coil at piston middle part is perfectly straight to be connect with coil on the built-in linear electric generator mover and be connected.
The existing structure that is coil with external linear electric generator mover, implementation procedure of the present invention is described: when piston rod promotion piston moves in clutch release slave cylinder, the piston rod of the piston the other end drives the mover that is fixed on the external linear electric generator on the piston rod and moves in stator, make 2 groups of coils being on the mover under different magnetic poles cutting magnetic line and produce induced potential in stator, because 2 groups of coils on the mover adopt the series connection of coiling reversal connection in the same way, so the induced potential of external linear electric generator output is the closing of 2 groups of coil-induced electromotive forces on the mover; Because of the output terminal of 2 groups of coils on the mover directly is connected with one group of field coil of piston, so this induced potential will make in one group of field coil of piston and produce induction current, this induction current generates an electromagnetic field piston; Again because the induced potential of external linear electric generator output is relevant with the speed of mover coil cutting magnetic line, that is: with external linear electric generator mover and stator between relative velocity relevant, so, piston is in clutch release slave cylinder during with a certain movement velocity, to make external linear electric generator produce a certain induced potential, this electromotive force is applied on one group of field coil of piston will produce certain magnetic field on piston external diameter and clutch release slave cylinder internal diameter gap, this magnetic field uprises the viscosity of the magnetic flow liquid in the gap, the damping force that the piston that moves in clutch release slave cylinder is subjected to becomes big, and the speed that this damping force can make piston move in clutch release slave cylinder again reduces; Therefore, when the speed that piston moves in clutch release slave cylinder is big more, the induced potential that external linear electric generator produces is high more, make the induction current of one group of field coil by piston big more, the magnetic intensity that piston is produced is high more, make the magnetic flow liquid viscosity in piston external diameter and the clutch release slave cylinder internal diameter gap high more, damping force suffered when piston is moved in clutch release slave cylinder is also big more, like this, the speed that piston moves in clutch release slave cylinder just reduces soon more, that is to say that damping force suffered when piston moves is directly proportional with the speed that piston moves in clutch release slave cylinder in clutch release slave cylinder, vice versa, that is: this damper can be adjusted the size of its output damping force automatically according to the movement velocity of piston, makes the damping force of double-out-rod adaptive double-control magneto-rheological damper output and the movement velocity of piston that certain adaptivity just arranged.When piston rod promotion piston was done acceleration or retarded motion in clutch release slave cylinder, situation was similar with it, and the double-out-rod adaptive double-control magneto-rheological damper function that external linear electric generator mover is cylindrical permanent magnet is also identical with it, all repeats no more herein.
Adopt external power supply identical with common MR damper to the control action of another group field coil on the double-out-rod adaptive double-control magneto-rheological damper piston, except the damping force that can make double-out-rod adaptive double-control magneto-rheological damper output obtains the wider adjusting, the double-out-rod adaptive double-control magneto-rheological damper functional reliability is greatly improved.Since two groups of field coils on the double-out-rod adaptive double-control magneto-rheological damper piston by two independently power supply control, therefore, compare with the existing MR damper that carries electricity generating device, double-out-rod adaptive double-control magneto-rheological damper of the present invention has following advantage:
1, the damping force of double-out-rod adaptive double-control magneto-rheological damper output can adapt to the needs of outside vibration damping automatically.
2, the mechanical structure of double-out-rod adaptive double-control magneto-rheological damper reliability simple and work is higher.
3, two of double-out-rod adaptive double-control magneto-rheological damper groups of field coils respectively by two two independently power supply control, its control mode is more flexible.
Description of drawings
Fig. 1 is that mover of the present invention is a kind of structural representation of coil.
Fig. 2 is built-in linear electric generator working principle schematic representation, and among Fig. 2, L1 and L2 are 2 groups of coils of mover (or stator), and E is the induced potential that coil is in operation and produces, V be external linear electric generator mover with stator between relative motion speed.
Fig. 3 is that mover of the present invention is a kind of structural representation of permanent magnet.
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, piston 2 is contained in the clutch release slave cylinder 1, the middle part of piston 2 is wound with two groups of field coils, that is: field coil 6 and field coil 7, outside field coil, add protective layer 5, leave the gap 4 that magnetic flow liquid flows between the inner circle wall of the periphery wall of piston 2 and protective layer 5 and clutch release slave cylinder 1; Piston rod 25 has the through hole 26 that is interconnected with the center of piston 2 and piston rod 10, one end of piston rod 25 and piston rod 10 is separately fixed at the two ends of piston 2 by screw thread, and the other end of piston rod 25 and piston rod 10 stretches out from the two ends of clutch release slave cylinder 1 by seal arrangement 23, bearing 24 and seal arrangement 11, the bearing 12 of 1 two end faces of clutch release slave cylinder respectively; Be full of magnetic flow liquid 21 in the clutch release slave cylinder 1; The mover 13 of external linear electric generator 18 is fixed on an end of piston rod 10, the stator 29 of external linear electric generator 18 is fixed on an end of clutch release slave cylinder 1, on the iron core 16 of mover 13, be fixed with 2 groups of shapes, size, coil 15 and 20 that the number of turn is identical, coil 15 and 20 adopts the series connection of coiling reversal connection in the same way, and the length of each coil equates (see figure 2) with the working stroke of piston 2 in clutch release slave cylinder 1; The urceolus 30 of piston 2, clutch release slave cylinder 1, iron core 16 and external linear electric generator 18 adopts the magnetic conductive metal material.The stator 29 of external linear electric generator 18 is to be embedded in the urceolus 30 by a cylindrical shape permanent magnet 19 to constitute, and cylindrical shape permanent magnet 19 is divided into two magnetic poles in the axial direction, and the length of cylindrical shape permanent magnet 19 is 3 times of the working stroke of piston 2 in clutch release slave cylinder 1; The internal diameter of cylindrical shape permanent magnet 19 is greater than the external diameter of the coil on the mover 13 15 and 20 and leave free gap 17.The lighting outlet of one group of field coil 8 at piston 2 middle parts leads to by piston rod center hole 22 that clutch release slave cylinder 1 is outer to join with control power supply 29, another group field coil 7 at piston 2 middle parts by fairlead 8 directly with built-in linear electric generator 18 movers 13 on coil 15 be connected with 20.
When piston rod 25 promotion pistons 2 move in clutch release slave cylinder 1, the mover 13 that piston 2 drives the external linear electric generator 18 that is fixed on piston rod 10 1 ends moves in stator 29, make 2 groups of coils (coil 15 and 20) of being on the mover 13 under different magnetic poles cutting magnetic line and produce induced potential in stator 29, because the coil 15 and 20 on the mover 13 adopts the series connection of coiling reversal connection in the same way, so the induced potential of external linear electric generator 18 outputs is the (see figure 2) of closing of coil 15 on the mover 13 and 20 induced potentials; Because of the output terminal of 2 groups of coils on the mover directly is connected with one group of field coil 7 of piston 2, so this induced potential will make in one group of field coil 7 of piston 2 and produce induction currents, this induction current generates an electromagnetic field piston 2; Again because the speed of the magnetic line of force on the induced potential of external linear electric generator 18 outputs and the mover 13 coil cutting stators 29 is relevant, that is: relevant with the mover 13 of built-in linear electric generator 18 with the relative velocity between the stator 29, so, piston 2 is in clutch release slave cylinder 1 during with a certain movement velocity, to make external linear electric generator 18 produce a certain induced potential, this electromotive force is applied on one group of field coil 7 of piston 2, to on piston 2 external diameters and clutch release slave cylinder 1 internal diameter gap 4, produce certain magnetic field, this magnetic field uprises the viscosity of the magnetic flow liquid in the gap 4, the damping force that the piston 2 of motion is subjected to becomes big, the speed reduction that this damping force can make piston 2 move again clutch release slave cylinder 1 in; Therefore, when the speed that piston 2 moves in clutch release slave cylinder 1 is big more, the induced potential that external linear electric generator 18 produces is high more, make the induction current of one group of field coil 7 by piston 2 big more, the magnetic intensity that piston 2 is produced is high more, make the magnetic flow liquid viscosity in piston 2 external diameters and the clutch release slave cylinder 1 internal diameter gap 4 high more, damping force suffered when piston 2 is moved in clutch release slave cylinder 1 is also big more, like this, the speed that piston 2 moves in clutch release slave cylinder 1 just reduces soon more, that is to say that damping force suffered when piston 2 moves is directly proportional with the speed that piston 2 moves in clutch release slave cylinder 1 in clutch release slave cylinder 1, vice versa, that is: double-out-rod adaptive double-control magneto-rheological damper can be adjusted the size of its output damping force automatically according to the movement velocity of piston 2, and the damping force that double-out-rod adaptive double-control magneto-rheological damper is exported can adapt to the variation of the movement velocity of piston 2 automatically.The control action of another group field coil 6 of 28 pairs of pistons 2 of external control power supply is identical with common MR damper, repeats no more herein.
Claims (3)
1. double-out-rod adaptive double-control magneto-rheological damper; it comprises clutch release slave cylinder; piston; piston rod and external linear electric generator; it is characterized in that: described piston is contained in the clutch release slave cylinder; the piston middle part is wound with two groups of field coils; field coil adds protective layer outward; this protective layer flushes with the piston periphery wall; leave the mobile gap of magnetic flow liquid between piston periphery wall and protective layer and the clutch release slave cylinder inner circle wall; one end of two piston rods is separately fixed at the two ends of piston; the other end of two piston rods stretches out from the clutch release slave cylinder two ends by the seal arrangement and the bearing of clutch release slave cylinder end face; two piston rods and the center of piston all have and are interconnected and through hole that diameter is identical; the external stability of one end of clutch release slave cylinder has the stator of external linear electric generator; the mover of external linear electric generator is fixed therein an end of a piston rod; be full of magnetic flow liquid in the clutch release slave cylinder, clutch release slave cylinder and piston adopt the magnetic conductive metal material.
2. as claims 1 described a kind of double-out-rod adaptive double-control magneto-rheological damper, it is characterized in that: the mover of described external linear electric generator is a cylindrical permanent magnet, cylindrical permanent magnet axially is being divided into two magnetic poles, the stator of external linear electric generator by in the magnetic conductive metal cylinder axially on embed 2 groups of shapes, size, the solenoid coil that the number of turn is identical constitutes, these 2 groups of coils adopt the series connection of coiling reversal connection in the same way, the external diameter of cylindrical permanent magnet is less than the internal diameter of stator cylinder shape coil and leave the free gap, the lighting outlet of one group of field coil at piston middle part leads to outside the clutch release slave cylinder by the piston rod center hole, and another group field coil at piston middle part is perfectly straight to be connect with coil on the built-in linear generating machine stator and be connected.
3. as claims 1 described a kind of double-out-rod adaptive double-control magneto-rheological damper, it is characterized in that: the stator of described external linear electric generator is to be embedded in the magnetic conductive metal urceolus by a cylindrical shape permanent magnet to constitute, the cylindrical shape permanent magnet is divided into two magnetic poles in the axial direction, the mover of external linear electric generator by cylindrical magnetic conductive metal axially on be wound with 2 groups of shapes, size, the coil that the number of turn is identical constitutes, these 2 groups of coils adopt the series connection of coiling reversal connection in the same way, the internal diameter of cylindrical shape permanent magnet is greater than the external diameter of mover coil and leave the free gap, the lighting outlet of one group of field coil at piston middle part leads to outside the clutch release slave cylinder by the piston rod center hole, and another group field coil at piston middle part is perfectly straight to be connect with coil on the built-in linear electric generator mover and be connected.
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| CN 201010135435 CN101832355A (en) | 2010-03-30 | 2010-03-30 | Double-out-rod adaptive double-control magneto-rheological damper |
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| CN 201010135435 CN101832355A (en) | 2010-03-30 | 2010-03-30 | Double-out-rod adaptive double-control magneto-rheological damper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278411A (en) * | 2011-06-03 | 2011-12-14 | 嘉兴学院 | Self-powered magnetic current changing damper and vibration damping system thereof |
| CN102287474A (en) * | 2011-06-03 | 2011-12-21 | 嘉兴学院 | Self-powered and self-induction magnetorheological damper |
| CN102312950A (en) * | 2011-08-18 | 2012-01-11 | 谭晓婧 | Magneto rheological (MR) grease damper with single outlet rod |
| WO2012016488A1 (en) * | 2010-08-05 | 2012-02-09 | The Chinese University Of Hong Kong | Self-powered and self-sensing magnetorheological dampers |
| CN102359537A (en) * | 2011-09-01 | 2012-02-22 | 谭晓婧 | Single-rod magneto-rheological grease damper |
| CN109578499A (en) * | 2019-01-18 | 2019-04-05 | 上海材料研究所 | A kind of double rod magnetic rheological liquid dampers and its sludge proof method |
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| CN2731175Y (en) * | 2004-09-10 | 2005-10-05 | 北京工业大学 | Self-reset magnetic current change damper |
| US20080053763A1 (en) * | 2006-08-31 | 2008-03-06 | Norman Wereley | System and method for self-powered magnetorheological-fluid damping |
| CN201627871U (en) * | 2010-03-30 | 2010-11-10 | 谭和平 | Double-ejector rod self-adaptation double-control magnetic current damper |
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| US4351515A (en) * | 1979-07-02 | 1982-09-28 | Toyota Jidosha Kogyo Kabushiki Kaisha | Feedback control type shock absorbing suspension system |
| CN1587738A (en) * | 2004-07-09 | 2005-03-02 | 北京工业大学 | Inverse type magnetic flow damper |
| CN2731175Y (en) * | 2004-09-10 | 2005-10-05 | 北京工业大学 | Self-reset magnetic current change damper |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012016488A1 (en) * | 2010-08-05 | 2012-02-09 | The Chinese University Of Hong Kong | Self-powered and self-sensing magnetorheological dampers |
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| CN102278411A (en) * | 2011-06-03 | 2011-12-14 | 嘉兴学院 | Self-powered magnetic current changing damper and vibration damping system thereof |
| CN102287474A (en) * | 2011-06-03 | 2011-12-21 | 嘉兴学院 | Self-powered and self-induction magnetorheological damper |
| CN102312950A (en) * | 2011-08-18 | 2012-01-11 | 谭晓婧 | Magneto rheological (MR) grease damper with single outlet rod |
| CN102359537A (en) * | 2011-09-01 | 2012-02-22 | 谭晓婧 | Single-rod magneto-rheological grease damper |
| CN102359537B (en) * | 2011-09-01 | 2012-11-28 | 谭晓婧 | Single-rod magneto-rheological grease damper |
| CN109578499A (en) * | 2019-01-18 | 2019-04-05 | 上海材料研究所 | A kind of double rod magnetic rheological liquid dampers and its sludge proof method |
| CN109578499B (en) * | 2019-01-18 | 2024-04-30 | 上海材料研究所有限公司 | Double-rod magnetorheological fluid damper and magnetorheological fluid anti-sedimentation method thereof |
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Application publication date: 20100915 |