CN103644248B - Controlled used appearance and the magnetorheological used case of damping and controlling method thereof - Google Patents

Controlled used appearance and the magnetorheological used case of damping and controlling method thereof Download PDF

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Publication number
CN103644248B
CN103644248B CN201310686427.7A CN201310686427A CN103644248B CN 103644248 B CN103644248 B CN 103644248B CN 201310686427 A CN201310686427 A CN 201310686427A CN 103644248 B CN103644248 B CN 103644248B
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damping
appearance
magnetic
flow liquid
pipe
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CN201310686427.7A
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Chinese (zh)
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CN103644248A (en
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张孝良
聂佳梅
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江苏大学
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Abstract

The present invention relates to magnetorheological used case and the controlling method thereof of a kind of controlled used appearance and damping, comprise cylinder barrel, piston, piston rod, slender pipe, extra heavy pipe, magnetic flow liquid, switch valve, MR conductor and damping hole, the present invention utilizes magnetic flow liquid under the effect of externally-applied magnetic field, the process that the apparent viscosity of magnetic flow liquid changes is continuous print, stepless, reversible magnetic rheology effect, also utilize simultaneously magnetic flow liquid without the low viscosity had under externally-applied magnetic field and flow in slender pipe time the inertia effect that has, collect two kinds of effects in a device, the present invention utilizes on-off valve control tubulation footpath different, be full of the slender pipe of magnetic flow liquid " leading to " and " breaking ", level is had to regulate used appearance size, simultaneously, magnetorheological viscosity is changed by externally-applied magnetic field, step-less adjustment damping size.Present invention accomplishes the requirement of semi-active control engineering being implemented used appearance and the adjustment of damping dynamic combined to isolation mounting, facilitate installation and use, reduce cost, improve manufacturing efficiency.

Description

Controlled used appearance and the magnetorheological used case of damping and controlling method thereof

Technical field

The present invention relates to a kind of used case, refer in particular to a kind of used appearance and the controlled magnetorheological used case of damping and controlling method thereof.

Background technique

Used container can improve control stability and the tire ground connection performance of automobile, coordinate smoothness and control stability, improve the riding comfort of train, dynamic performance and stability, suppress the shimmy phenomenon that turns to of motorcycle and by vehicle and seismic building vibration, the vibration being isolated quality can also be absorbed.Therefore, used container at vehicle suspension, turn to, the field such as vibration isolation, dynamic absorber of building is with a wide range of applications.

Chinese patent CN200810123830.8 and CN201010281317.9, US Patent No. 20090108510 and US7316303 individually disclose gear rack and are used to container and cycloidal steel ball type is used to container, container is used to by ball screw and container is used to by oil cylinder-motor, these used containers rely on pinion and rack and cycloidal ball mechanism, ball screw framework and oil cylinder-motor mechanism amplification flywheel inertia to carry out work respectively, and this kind of used container is to encapsulate flywheel inertia for feature.Chinese patent CN01241435.2 and CN201010510953.4 individually discloses lever mass and is used to container and fluid power generating polynomial is used to container, these used containers rely on lever mass mechanism and fluid power generating means to amplify mass elements inertia to carry out work respectively, this kind of used container with package quality inertia for feature.Owing to carrying out dynamic adjustments by changing quality or rotary inertia to be used to the size that container is used to hold very difficult, therefore above-mentioned two classes are used to the used appearance coefficient of case is changeless, can not realize dynamic adjustments.

Magnetic flow liquid has excellent controllability, very wide dynamic range, higher speed of response, very low power consumption, relatively simple control mode, therefore it has broad application prospects in structural vibration control, Vehicle Engineering, especially in automotive semi-active suspension field, the research institution of World Developed Countries and enterprise drop into a large amount of manpower and materials and utilize magnetic flow liquid to develop damping device and correlation technique, wherein the magnetic flow liquid of Lord company and damper commercialization.The application of magnetic converting technique in automotive engineering brings revolutionary progress to vehicle vibration damping system.MR damper utilizes magnetic flow liquid under the effect of externally-applied magnetic field, the size that the process that the apparent viscosity of magnetic flow liquid changes is continuous print, stepless, reversible magnetic rheology effect carrys out step-less adjustment damping.Obviously, existing MR damper with only the magnetic rheology effect of magnetic flow liquid, therefore can only realize the regulating and control to damping.

Along with the fast development of semi-active vibration-isolating Theory and technology, engineering integrates in the urgent need to a kind of the device being used to hold and damping regulates, realize dynamic adjustments and the control of used appearance and damping, meet isolation mounting with the demand of peak output absorbing vibrational energy, thus significantly improve the vibration isolating effect of isolation mounting.

Summary of the invention

The object of the invention is: overcome to encapsulate used container that flywheel or mass inertia are feature and can not realize the shortcoming that dynamic adjustments is used to hold, and MR damper can only the deficiency of dynamic adjustments damping, magnetorheological used case and the controlling method thereof of a kind of controlled used appearance and damping are provided, realize dynamic adjustments and the control of used appearance and damping, meet the requirement of semi-active control engineering being implemented used appearance and the adjustment of damping dynamic combined to isolation mounting, isolation mounting is made with peak output absorbing vibrational energy, thus can significantly to improve the vibration isolating effect of isolation mounting.

For achieving the above object, the present invention solves this technical problem adopted technological scheme and is:

Scheme one, the magnetorheological used case of a kind of controlled used appearance and damping, comprise cylinder barrel, piston, piston rod, slender pipe, extra heavy pipe, magnetic flow liquid, switch valve, MR conductor and damping hole, described piston is in the inside of cylinder barrel, described piston is divided into a left side cylinder barrel, right two chambeies, described extra heavy pipe is directly connected with the outlet in two chambeies, left and right of cylinder barrel, described one group of slender pipe of following caliber difference to be connected in parallel and extra heavy pipe are connected in series, described every root slender pipe arranges a switch valve, described damping hole and slender pipe tandem arrangement, described MR conductor loops is installed around damping hole, described slender pipe, the chamber, left and right of extra heavy pipe and cylinder barrel is full of magnetic flow liquid.

Scheme two, is describedly arranged on piston by damping hole, and described damping hole is communicated with the chamber, left and right of cylinder barrel, and described MR conductor arrangement is in the inside of piston, and described MR conductor loops is installed around damping hole, and described damping hole is also arranged in parallel with slender pipe.

The present inventor proposes a kind of controlling method to controlled used appearance and the magnetorheological used container of damping, comprise the following steps: combined the through and off controlling respective fine long tube by one group of switch valve, implement the control to one group of slender pipe equivalence caliber, realize the dynamic adjustments to used appearance and control, by the size of electric current in control MR conductor, regulate the power in MR conductor magnetic field, implement, to the control of the magnetic flow liquid viscosity flowing through damping hole, to realize the dynamic adjustments to damping and control.

Principle of the present invention utilizes magnetic flow liquid under the effect of externally-applied magnetic field, the process that the apparent viscosity of magnetic flow liquid changes is continuous print, stepless, reversible magnetic rheology effect, also utilize simultaneously magnetic flow liquid without the low viscosity had under externally-applied magnetic field and flow in slender pipe time the inertia effect that has, collect two kinds of effects in a device.Magnetorheological used container on-off valve control tubulation footpath is different, be full of the slender pipe of magnetic flow liquid " lead to " and " break ", there iing level adjustment to be used to appearance size, meanwhile, change magnetorheological viscosity by externally-applied magnetic field, step-less adjustment damping size.

The present invention not only solves to encapsulate used container that flywheel or mass inertia are feature can not realize the problem that dynamic adjustments is used to hold, achieve the Dynamic controlling to used appearance, but also overcome MR damper can only the deficiency of dynamic adjustments damping, achieve a kind of device and can control the function that used appearance can control again damping, meet the requirement of semi-active control engineering being implemented used appearance and the adjustment of damping dynamic combined to isolation mounting, significantly to improve vibration isolating effect, also facilitate installation and use simultaneously, reduce cost, improve manufacturing efficiency.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the invention will be further described.

Fig. 1 is damping hole and the slender pipe series relationship structural representation (scheme one) of controlled used appearance and the magnetorheological used case of damping;

Fig. 2 is damping hole and the slender pipe parallel relationship structural representation (scheme two) of controlled used appearance and the magnetorheological used case of damping.

In figure, 1-switch valve 2-slender pipe 3-MR conductor 4-extra heavy pipe 5-piston rod 6-magnetic flow liquid 7-piston 8-cylinder barrel 9-damping hole.

Embodiment

Below in conjunction with drawings and Examples, the invention will be further described.

As shown in Figure 1, 2, the invention provides a kind of controlled used appearance and the magnetorheological used case of damping and controlling method thereof.

Different from the series parallel connection relation of slender pipe 2 according to damping hole 9, divide two embodiments to be illustrated the present invention below.

Embodiment one

A kind of controlled used appearance and the magnetorheological used case of damping, comprise cylinder barrel 8, piston 7, piston rod 5, slender pipe 2, extra heavy pipe 4, magnetic flow liquid 6, switch valve 1, MR conductor 3 and damping hole 9, described piston 7 is in the inside of cylinder barrel 8, described piston 7 is divided into a left side cylinder barrel 8, right two chambeies, the outlet in described extra heavy pipe 4 and left and right two chambeies is directly connected, the slender pipe 2 that described one group of root caliber difference is connected in parallel is connected in series with extra heavy pipe 4, described every root slender pipe 2 arranges a switch valve 1, described damping hole 9 and slender pipe 2 tandem arrangement, described MR conductor 3 is installed around damping hole 9, described slender pipe 2, the chamber, left and right of extra heavy pipe 4 and cylinder barrel 8 is full of magnetic flow liquid 6.

Embodiment two

A kind of controlled used appearance and the magnetorheological used case of damping, comprise cylinder barrel 8, piston 7, piston rod 5, slender pipe 2, extra heavy pipe 4, magnetic flow liquid 6, switch valve 1, MR conductor 3 and damping hole 9, described damping hole 9 is arranged on piston 7, described damping hole 9 is communicated with the chamber, left and right of cylinder barrel 8, described MR conductor 3 is arranged in the inside of piston 7, and described MR conductor 3 is installed around damping hole 9.

The present inventor proposes a kind of controlling method to controlled used appearance and the magnetorheological used container of damping: combined the through and off controlling respective fine long tube 2 by one group of switch valve 1, implement the control to one group of equivalent caliber of slender pipe 2, realize the dynamic adjustments to used appearance and control, by the size of electric current in control MR conductor 3, regulate the power in MR conductor 3 magnetic field, implement, to the control of magnetic flow liquid 6 viscosity flowing through damping hole 9, to realize the dynamic adjustments to damping and control.

Magnetorheological used case in the present invention finds according to following two and designs.The first, the present invention finds magnetorheologically when slender pipe flows to right chamber, to produce the huge inertia effect from the left chamber of cylinder body; The second, the present invention finds the used appearance that can regulate used container by changing slender pipe caliber.More than find by the test of Computation and Simulation repeatedly and obtain.

First, the inertial force produced through the known magnetorheological used case of primary Calculation is

F=-(S r/ S r) 2in ma (1) formula, a is the acceleration of piston rod relative to cylinder barrel, and m is the quality of magnetic flow liquid in slender pipe, S rfor the net sectional area of cylinder barrel, S rfor the sectional area of slender pipe.

Secondly, can derive the used coefficient that holds further by the definition of formula (1) and used container is

b = ρL S R 2 / S r - - - ( 2 )

In formula, ρ is the density of magnetic flow liquid, and L is the length of slender pipe.

By the density of the known used appearance coefficient of formula (2) and magnetic flow liquid, the length of slender pipe, square being directly proportional of the net sectional area of cylinder barrel, and be inversely proportional to the sectional area of slender pipe.Therefore, the length of slender pipe is longer, the net sectional area of cylinder barrel is larger, and the sectional area of slender pipe very little time, magnetic flow liquid produces the huge inertia effect from the left chamber of cylinder body when slender pipe flows to right chamber, and by changing slender pipe caliber, the sectional area of the long tube that namely attenuates, can regulate the used appearance of used container.

Finally, l-G simulation test is carried out to different length and the slender pipe of caliber and the magnetorheological used container of different cylinder diameter, the results are shown in Table 1.

The magnetorheological used container l-G simulation test of table 1

Piston rod footpath (mm) 6 6 6 6 6 6 Cylinder diameter (mm) 30 25 30 20 24 20 Capillary diameter (mm) 3 3 6 4 5 4 Capillary length (mm) 72 62 84 56 68 56 Used appearance (kg) 1012.1 573.0 198.5 99.0 89.0 76.8

The result of table 1 shows, magnetic flow liquid really can produce the huge inertia effect from the left chamber of cylinder body when slender pipe flows to right chamber, and changes the used appearance that slender pipe caliber can regulate used container.Meanwhile, result also shows that technological scheme of the present invention is feasible, and can implement.

Prior art is all by utilizing quality or the used case of this approach of flywheel inertia design, the present invention not along this technological approaches, but utilizes magnetic flow liquid when slender pipe flows to right chamber, to produce this discovery of the huge inertia effect from the left chamber of cylinder body to design used container.This inertia effect of magnetic flow liquid is utilized to be one of distinguishing characteristics for the present invention and prior art; The individual distinguishing characteristics two of the present invention and prior art to the regulating and control that used container is used to hold by the enforcement of change slender pipe caliber; Find and utilize magnetic flow liquid inertia and damping combined effect, integrate used hold and damping to regulate be difference with the prior art feature three of the present invention.

Claims (4)

1. the magnetorheological used case of a controlled used appearance and damping, comprise cylinder barrel (8), piston (7), piston rod (5), slender pipe (2), extra heavy pipe (4), magnetic flow liquid (6), switch valve (1), MR conductor (3) and damping hole (9), it is characterized in that: described piston (7) is in the inside of cylinder barrel (8), described piston (7) is divided into a left side cylinder barrel (8), right two chambeies, described extra heavy pipe (4) is directly connected with the outlet in two chambeies, left and right of cylinder barrel (8), the slender pipe (2) that described one group of root caliber difference is connected in parallel is connected in series with extra heavy pipe (4), the upper layout switch valve (1) of described every root slender pipe (2), described damping hole (9) and slender pipe (2) tandem arrangement, described MR conductor (3) is installed around damping hole (9), described slender pipe (2), the chamber, left and right of extra heavy pipe (4) and cylinder barrel (8) is full of magnetic flow liquid (6).
2. the magnetorheological used case of controlled used appearance according to claim 1 and damping, is characterized in that: described damping hole (9) is also arranged in parallel with slender pipe (2).
3. the magnetorheological used case of controlled used appearance according to claim 2 and damping, it is characterized in that: described damping hole (9) is arranged on piston (7), described damping hole (9) is communicated with the chamber, left and right of cylinder barrel (8), described MR conductor (3) is arranged in the inside of piston (7), and described MR conductor (3) is installed around damping hole (9).
4. one kind adopts the device described in claim 1-3 to the controlling method of used appearance and the magnetorheological used container of damping, comprise the following steps: the through and off being controlled respective fine long tube (2) by the combination of one group of switch valve (1), implement the control to one group of equivalent caliber of slender pipe (2), realize the dynamic adjustments to used appearance and control, by the size of electric current in control MR conductor (3), regulate the power in MR conductor (3) magnetic field, implement, to the control of magnetic flow liquid (6) viscosity flowing through damping hole (9), to realize the dynamic adjustments to damping and control.
CN201310686427.7A 2013-12-13 2013-12-13 Controlled used appearance and the magnetorheological used case of damping and controlling method thereof CN103644248B (en)

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CN105276060B (en) * 2015-11-10 2017-12-05 江苏大学 A kind of dual circuit liquid of variable used matter coefficient is used to container
CZ2015813A3 (en) * 2015-11-16 2017-05-10 ÄŚVUT v Praze, Fakulta strojnĂ­ A hydraulic shock absorber
CN106763440B (en) * 2016-12-27 2019-05-14 华南理工大学 A kind of damper of the series-parallel capillary variable system intrinsic frequency of matrix
CN106763451B (en) * 2016-12-27 2019-05-14 华南理工大学 A kind of damper of matrix and parallel capillary tube variable system intrinsic frequency
CN106763437B (en) * 2016-12-27 2019-05-14 华南理工大学 A kind of and parallel capillary tube variable system intrinsic frequency vehicle shock absorber operation method
CN106763450B (en) * 2016-12-27 2019-05-14 华南理工大学 A kind of damper of matrix and capillary variable system intrinsic frequency of connecting
DE102017203718A1 (en) 2017-03-07 2018-09-13 Zf Friedrichshafen Ag Hydraulic damper device for a vehicle
CN107264826B (en) * 2017-07-04 2019-04-23 新昌县大市聚镇万艺机械厂 A kind of carrier-based aircraft landing magnetorheological fluid power-assisted/damping runway
CN107989851B (en) * 2017-12-05 2019-05-28 重庆大学 A kind of air cylinder structure based on magnetic converting technique and controllably throw robot
CN108843720B (en) * 2018-06-20 2020-03-27 安徽工程大学 Rotary magnetorheological damper
CN109083967B (en) * 2018-08-31 2020-04-07 南京理工大学 Spiral gas inerter
CN109083966A (en) * 2018-08-31 2018-12-25 南京理工大学 A kind of wound gas of waveform pipe ring is used to be held

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