CN104309438B - A kind of multi-state vehicle suspension - Google Patents
A kind of multi-state vehicle suspension Download PDFInfo
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- CN104309438B CN104309438B CN201410560364.5A CN201410560364A CN104309438B CN 104309438 B CN104309438 B CN 104309438B CN 201410560364 A CN201410560364 A CN 201410560364A CN 104309438 B CN104309438 B CN 104309438B
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Abstract
The invention belongs to automotive suspension vibration isolation field, it is provided that a kind of multi-state vehicle suspension.Magnetic suspension spring and magnetic flow liquid are become one, utilizes the captivation produced between coil permanent magnet and permanent magnet synonyms pole to support body quality, change the electric current in coil permanent magnet, change the size of synonyms pole captivation, it is achieved suspension rate is controlled.By controlling field coil current, change magnetic induction around magnetic flow liquid, thus changing magnetic flow liquid viscosity characteristics, it is achieved suspension damping is controlled.Vibration isolation demand according to running car, suspension can be operated under " passively ", " half actively ", " actively " three kinds of operating modes.When being operated in " passively ", damping under controlled " half actively " operating mode, suspension can realize the accumulation of energy to vibrational energy and reclaim.Instant invention overcomes that passive suspension parameter is immutable, the controlled difficult problem being difficult to of semi-active suspension rigidity, avoid the problem that Active suspension power consumption is bigger, stable performance simultaneously, there is higher using value.
Description
Technical field
The invention belongs to vehicle suspension vibration damping field, be specifically related to a kind of vehicle suspension with various working.
Background technology
The contradiction between vehicle riding comfort and control stability is preferably resolved so that the anti-vibration performance of vehicle suspension is promoted preferably along with the development of electron controls technology, semi-active suspension and Active suspension.At present, the realization of semi-active suspension mainly adopts mutative damp scheme, Chinese patent 201420009104.4 to disclose a kind of restriction formula ride control shock absorber, changes the damping force of amortisseur by regulating choke area, thus obtains good anti-vibration performance.But, for semi-active suspension, the adjustable bottleneck problem but becoming its performance boost of rigidity of suspension.Active suspension then adopts the generator of power that power output is controlled mostly, namely the full Active suspension of Bose company exploitation travels work information by the difference of collection vehicle, the power output size of adjustment power actuator, with this effectively buffering realizing road pavement unevenness and decay.For Active suspension, even if under static state, forcer device need nonetheless remain for consumed energy to support vehicle body load, and the energy consumed is relatively big, proposes a higher difficult problem to existing energy and environment.In the face of the Pendant Structure Of Vehicle cut both ways, in the urgent need to a kind of solution that can better neutralize various suspension form pluses and minuses in engineering.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of multi-state vehicle active suspension, passive suspension parameter both can have been overcome constant and the adjustable difficult problem being difficult to of semi-active suspension rigidity, can avoid the problem that Active suspension energy consumption is bigger simultaneously.Driving cycle demand according to automobile, suspension can be operated in " passively ", " half actively ", under the different operating modes of " actively ", combination property is more excellent.
The present invention adopts the technical scheme that, magnetic suspension spring and magnetic flow liquid are become one, utilize the captivation bearing vehicle body quality of synonyms pole between coil permanent magnet and permanent magnet, playing maglev stiffness effect, the rigidity that the electric current in change coil permanent magnet coil can realize magnetic suspension spring is controlled.Change the size of current of magnet exciting coil in electromagnetic piston, change the viscosity characteristics of magnetic flow liquid, it is achieved damp controlled.
A kind of multi-state vehicle suspension, be provided with including upper hanger (1), lower hanger (13), work cylinder barrel (16), oil storage cylinder barrel (19), piston rod (20), described piston rod (20), coil throughbore (3) and centering coil through hole (6), magnetic suspension cylinder barrel (21), forms magnetic suspension working chamber (4) in described magnetic suspension cylinder barrel (21)；
Described magnetic suspension cylinder barrel (21) is fixing with oil storage cylinder barrel (19) to be connected, described oil storage cylinder barrel (19) is provided with work cylinder barrel (16), and work cylinder barrel (16) is fixing with oil storage cylinder barrel (19) lower end is connected, described oil storage cylinder barrel (19) lower end and lower hanger (13) are hinged；Described work cylinder barrel (16) lower end offers through hole (14)；
Described upper hanger (1) and piston rod (20) upper end are hinged, described piston rod (20) is through magnetic suspension cylinder barrel (21), oil storage cylinder barrel (19) and work cylinder barrel (16), and piston rod (20) lower end is positioned at work cylinder barrel (16)；
A kind of multi-state vehicle suspension, also including coil permanent magnet (2), magnet exciting coil (7), permanent magnet (22), magnetic flow liquid (10), damping piston (12), electromagnetic piston (17), described coil permanent magnet (2) is fixed on piston rod (20) and is positioned at the inner side of described permanent magnet (22)；Described permanent magnet (22) is fixedly installed on inside magnetic suspension cylinder barrel (21) casing wall；Described magnet exciting coil (7) is arranged on electromagnetic piston (17)；Described electromagnetic piston (17) is connected with piston rod (20) lower end；Described damping piston (12) is positioned at work cylinder barrel (16)；Described magnetic flow liquid (10) is placed in oil storage cylinder barrel (19) and work cylinder barrel (16).
Described magnet exciting coil (7) is arranged on electromagnetic piston (17) through pre-load nut (9)；
Uniformly being tied with densely covered first coil on described coil permanent magnet (2), described first coil is connected with outer terminal circuit with centering coil through hole (6) via coil throughbore (3).When suspension work in " passively " or damps under controlled " half actively " operating mode, coil permanent magnet (2) cutting magnetic induction line in magnetic field makes generation faradic current in coil.This portion of electrical current can being reclaimed by outer terminal circuit, now suspension can realize the accumulation of energy to vibrational energy and reclaims.
The second coil on described magnet exciting coil (7) is connected with outer terminal circuit through centering coil through hole (6).
When coil permanent magnet (2) with magnet exciting coil (7) all do not pass to electric current, utilize the mutual attractive force bearing vehicle body weight between permanent magnet (22) and coil permanent magnet (2) synonyms pole, it is achieved stiffness.Magnetic flow liquid (10) is utilized to produce damping force by rebound valve (8), flowing valve (18), compression valve (11) and recuperation valve (15), it is achieved damping action.Now suspension work is under " passively " operating mode, and rigidity is all uncontrollable with damping.
When only coil permanent magnet (2) passes to electric current, change size of current and direction, realizing the change of mutual attractive force between permanent magnet (22) and coil permanent magnet (2) synonyms pole, now suspension work is in rigidity controlled " half actively " operating mode；
When passing to electric current in only magnet exciting coil (7), changing size of current and direction, change magnetic induction around, thus changing the viscosity characteristics of magnetic flow liquid (10), now suspension work is in damping controlled " half actively " operating mode.
When the coil in coil permanent magnet (2) with magnet exciting coil (7) all passes to electric current, change size of current and direction, realize the change of mutual attractive force and magnetic flow liquid (10) viscosity characteristics between permanent magnet (22) and coil permanent magnet (2) synonyms pole, now suspension work is under " actively " operating mode, and rigidity is all controlled with damping.
Described magnetic suspension working chamber (4) is respectively arranged at two ends with buffer stopper (23) and lower buffer stopper (5) up and down；Losing effective travel for avoiding suspension to be subject to shock loading and clash into working cylinder, the upper transverse plane of upper buffer stopper (23) lower end plane and lower buffer stopper (5) is coil permanent magnet (2) and permanent magnet (22) extreme position of greatest attraction forces between synonyms pole under passive work mode.
Employing the invention has the beneficial effects as follows, only by the coil in control coil permanent magnet and the electric current of magnet exciting coil in electromagnetic piston, can realize that the rigidity of suspension is controlled controlled with damping or rigidity is combined controlled with damping.Vibration isolation demand according to running car, suspension can be set and be operated in " passively " operating mode, damp adjustable " half actively " operating mode, rigidity is adjustable " half actively " operating mode and " actively " operating mode.When suspension work in " passively ", damp under adjustable " half actively " operating mode, the coil in coil permanent magnet can produce faradic current in suspension moves back and forth, and this part electric energy can reclaim storage through outer terminal circuit, it is achieved " accumulation of energy " action effect.Even if control system is damaged or vehicle is under static inactive state, vehicle suspension still can be operated under " passively " operating mode, now inputs without outside energy, and suspension still has stable service behaviour.
The present invention had both overcome the difficult problem that passive suspension parameter is immutable, semi-active suspension variable rigidity is difficult to, turn avoid the problem that Active suspension energy expenditure is bigger, suspension work pattern can be selected as required, its controlling organization simple in construction, there is useful engineer applied and be worth.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is a kind of multi-state vehicle active suspension schematic diagram.
Description of reference numerals: 1. go up hanger, 2. coil permanent magnet, 3. coil throughbore, 4. magnetic suspension working chamber, 5. descend buffer stopper, 6. centering coil through hole, 7. magnet exciting coil, 8. rebound valve, 9. pre-load nut, 10. magnetic flow liquid, 11. compression valve, 12. damping pistons, 13. lower hanger, 14. through holes, 15. recuperation valves, 16. work cylinder barrels, 17. electromagnetic piston, 18. flowing valves, 19. oil storage cylinder barrels, 20. piston rods, 21. magnetic suspension cylinder barrel, 22. permanent magnets, buffer stopper on 23..
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
As shown in Figure 1, upper hanger 1 is hinged with piston rod 20 upper end, loop coil permanent magnet 2 is fixed on piston rod 20 and is positioned at the inner side of described permanent magnet 22, and coil permanent magnet 2 is uniformly tied with densely covered first coil, and first coil is connected with outer terminal circuit with centering coil through hole 6 via coil throughbore 3.Permanent magnet 22 is fixed on inside magnetic suspension cylinder barrel 21 casing wall, and magnetic suspension working chamber about 4 two ends are provided with buffer stopper 23 and lower buffer stopper 5.Magnetic suspension cylinder barrel 21 is fixing with oil storage cylinder barrel 19 to be connected, and contains magnetic flow liquid 10 in oil storage cylinder barrel 19 and work cylinder barrel 16.Piston rod 20 lower end is connected with electromagnetic piston 17, and electromagnetic piston 17 is provided with rebound valve 8 and flowing valve 18, and magnet exciting coil 7 is arranged on electromagnetic piston 17 through pre-load nut 9 pretension, and the second coil on described magnet exciting coil is connected with outer terminal circuit through centering coil through hole 6.Damping piston 12 is provided with compression valve 11 and recuperation valve 15, and work cylinder barrel 16 is hinged with oil storage cylinder barrel 19 lower end, and work cylinder barrel 16 lower end offers through hole 14, it is achieved the fluid circulation between work cylinder barrel 16 and oil storage cylinder barrel 19.Lower hanger 13 is hinged with oil storage cylinder barrel 19.
Upper hanger 1 is connected with vehicle body, and lower hanger 13 is connected with wheel, thus completes the installation of a kind of multi-state vehicle suspension.
Anti-vibration performance demand according to running car, suspension can be operated under " passively ", " half actively ", " actively " three kinds of operating modes.
When all not passing to electric current in coil permanent magnet 2 with magnet exciting coil 7, now suspension work is under " passively " operating mode.Rely on the mutual attractive force bearing vehicle body weight between permanent magnet 22 and coil permanent magnet 2 synonyms pole.When suspension is subject to road roughness impact, producing relative displacement between permanent magnet 22 and coil permanent magnet 2, graviational interaction makes it have the trend returning to equipoise.Cause that suspension loses effective travel for avoiding being subject to shock loading, upper buffer stopper 23 lower end plane and on lower buffer stopper 5 transverse plane be between the coil permanent magnet 2 being not powered on and permanent magnet 22 synonyms pole the extreme position of greatest attraction forces.Magnetic flow liquid 10 produces damping force effect by rebound valve 8, flowing valve 18, compression valve 11 and recuperation valve 15.Without outer energy input under this operating mode, suspension property is general.
When passing to electric current in only coil permanent magnet 2, now suspension work is under rigidity adjustable " half actively " operating mode.By changing size of current and direction, it is achieved the change of mutual attractive force between permanent magnet 22 and coil permanent magnet 2 synonyms pole, it is achieved the rigidity of magnetic suspension spring is adjustable.When passing to electric current in only magnet exciting coil 7, now suspension work is under damping adjustable " half actively " operating mode.Changing size of current and direction, changing magnetic induction around, thus changing the viscosity characteristics of magnetic flow liquid 10, it is achieved damp adjustable.Needing outside energy to input under this operating mode, suspension property is more excellent.
When the coil in coil permanent magnet 2 with magnet exciting coil 7 all passes to electric current, now suspension work is under " actively " operating mode.When needs suspension provides greater stiffness, change the electric current in coil permanent magnet 2 coil, it is made to produce and coil permanent magnet 2 magnetic field in the same direction, captivation between synonyms pole just increases, according to formula F=kx, when shift invariant, the increase of elastic force is the increase due to spring rate, and namely now the rigidity of suspension becomes big.When needs suspension provides less rigidity, changing the electric current in coil permanent magnet 2 coil so that it is producing the magnetic field reverse with coil permanent magnet 2, the captivation between synonyms pole just reduces, and in like manner can obtain, the rigidity of magnetic suspension suspension reduces.The rigidity realizing suspension with this is controlled.Change the electric current in magnet exciting coil 7, thus changing the magnetic induction of magnet exciting coil 7 surrounding magnetic field so that magnetic flow liquid 10 viscosity characteristics changes, it is achieved damp controlled.Carry out the combine regulation of suspension rate and damping according to road condition, obtain good anti-vibration performance.Needing extraneous higher-energy input under this operating mode, suspension property is optimum.
When multi-state vehicle suspension is operated in " passively " or damps under adjustable " half actively " operating mode, road roughness impacts and drives upper hanger 1 and lower hanger 13 relative motion, relative displacement is produced so that coil permanent magnet 2 coil produces faradic current between coil permanent magnet 2 and permanent magnet 22.This portion of electrical current can being reclaimed by outer terminal circuit, now suspension work is under " accumulation of energy " operating mode, it may be achieved the recovery of vibrational energy is stored, in order to follow-up use, is greatly reduced energy expenditure.
Described embodiment be the present invention preferred embodiment; but the present invention is not limited to above-mentioned embodiment; when without departing substantially from the flesh and blood of the present invention, those skilled in the art can make any conspicuously improved, replace or modification belongs to protection scope of the present invention.
Claims (7)
1. a multi-state vehicle suspension,
Including upper hanger (1), lower hanger (13), work cylinder barrel (16), oil storage cylinder barrel (19), piston rod (20), magnetic suspension cylinder barrel (21), described piston rod (20) is provided with coil throughbore (3) and centering coil through hole (6), forms magnetic suspension working chamber (4) in described magnetic suspension cylinder barrel (21)；
Described magnetic suspension cylinder barrel (21) is fixing with oil storage cylinder barrel (19) to be connected, described oil storage cylinder barrel (19) is provided with work cylinder barrel (16), and work cylinder barrel (16) is fixing with oil storage cylinder barrel (19) lower end is connected, described oil storage cylinder barrel (19) lower end and lower hanger (13) are hinged；Described work cylinder barrel (16) lower end offers through hole (14)；
Described upper hanger (1) and piston rod (20) upper end are hinged, described piston rod (20) is through magnetic suspension cylinder barrel (21), oil storage cylinder barrel (19) and work cylinder barrel (16), and piston rod (20) lower end is positioned at work cylinder barrel (16)；
It is characterized in that: also include coil permanent magnet (2), magnet exciting coil (7), permanent magnet (22), magnetic flow liquid (10), damping piston (12), electromagnetic piston (17), described coil permanent magnet (2) is fixed on piston rod (20) and is positioned at the inner side of described permanent magnet (22)；Described permanent magnet (22) is fixedly installed on inside magnetic suspension cylinder barrel (21) casing wall；Described magnet exciting coil (7) is arranged on electromagnetic piston (17)；Described electromagnetic piston (17) is connected with piston rod (20) lower end；Described damping piston (12) is positioned at work cylinder barrel (16)；Described magnetic flow liquid (10) is placed in oil storage cylinder barrel (19) and work cylinder barrel (16)；
When described coil permanent magnet (2) with magnet exciting coil (7) all do not pass to electric current, now suspension work is under " passively " operating mode, rely on the mutual attractive force bearing vehicle body weight between permanent magnet (22) and coil permanent magnet (2) synonyms pole, when suspension is subject to road roughness impact, producing relative displacement between permanent magnet (22) and coil permanent magnet (2), graviational interaction makes it have the trend returning to equipoise；
When described coil permanent magnet (2) passes to electric current, now suspension work is under rigidity adjustable " half actively " operating mode, by changing size of current and direction, realize the change of mutual attractive force between permanent magnet (22) and coil permanent magnet (2) synonyms pole, it is achieved the rigidity of magnetic suspension spring is adjustable；When only magnet exciting coil (7) passes to electric current, now suspension work is under damping adjustable " half actively " operating mode, changes size of current and direction, changes magnetic induction around, thus changing the viscosity characteristics of magnetic flow liquid (10), it is achieved damp adjustable；
When the coil in described coil permanent magnet (2) with magnet exciting coil (7) all passes to electric current, now suspension work is under " actively " operating mode, carries out the combine regulation of suspension rate and damping according to road condition, obtains good anti-vibration performance；
When described multi-state vehicle suspension is operated in " passively " or damps under adjustable " half actively " operating mode, road roughness impacts and drives upper hanger (1) and lower hanger (13) relative motion, relative displacement is produced between coil permanent magnet (2) and permanent magnet (22), make generation faradic current in coil permanent magnet (2) coil, this portion of electrical current can be reclaimed by outer terminal circuit, now suspension work is under " accumulation of energy " operating mode, it may be achieved the recovery of vibrational energy is stored.
2. multi-state vehicle suspension as claimed in claim 1, it is characterised in that: described magnet exciting coil (7) is arranged on electromagnetic piston (17) through pre-load nut (9).
3. multi-state vehicle suspension as claimed in claim 1, it is characterized in that: being uniformly tied with densely covered first coil on described coil permanent magnet (2), described first coil is connected with outer terminal circuit with centering coil through hole (6) via coil throughbore (3).
4. multi-state vehicle suspension as claimed in claim 1, it is characterised in that: the second coil on described magnet exciting coil (7) is connected with outer terminal circuit through centering coil through hole (6).
5. multi-state vehicle suspension as claimed in claim 1, it is characterised in that: described magnetic suspension working chamber (4) is respectively arranged at two ends with buffer stopper (23) and lower buffer stopper (5) up and down.
6. multi-state vehicle suspension as claimed in claim 1, it is characterised in that: described damping piston (12) is provided with compression valve (11) and recuperation valve (15).
7. multi-state vehicle suspension as claimed in claim 1, it is characterised in that: described electromagnetic piston (17) is provided with rebound valve (8) and flowing valve (18).
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| CN201410560364.5A CN104309438B (en) | 2014-10-20 | 2014-10-20 | A kind of multi-state vehicle suspension |
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| CN201410560364.5A CN104309438B (en) | 2014-10-20 | 2014-10-20 | A kind of multi-state vehicle suspension |
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| CN111942095B (en) * | 2020-07-27 | 2022-11-01 | 槃实科技(深圳)有限公司 | Vehicle semi-active suspension with magnetic suspension spring and eddy current damper coupled for new energy vehicle |
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