CN102287474A - Self-powered and self-induction magnetorheological damper - Google Patents
Self-powered and self-induction magnetorheological damper Download PDFInfo
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- CN102287474A CN102287474A CN2011101513364A CN201110151336A CN102287474A CN 102287474 A CN102287474 A CN 102287474A CN 2011101513364 A CN2011101513364 A CN 2011101513364A CN 201110151336 A CN201110151336 A CN 201110151336A CN 102287474 A CN102287474 A CN 102287474A
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Abstract
The invention relates to a self-powered and self-induction magnetorheological damper comprising a connecting rod, an upper end cover, a stator, a first guide sleeve, a magnetic pole, a permanent magnet body, an electromagnetic coil, a piston rod, a connecting end cover, a second guide sleeve, a seal piece, a cylinder body, a piston with a coil wound on, a bottom end cover, a charge signal cable, a bottom end lug, a piezoelectric electrode, a piezoelectric patch, a rubber sheet, an airbag, a lead and an electricity signal control module. In the self-powered and self-induction magnetorheological damper, the output damping force can be adjusted in real time according to external vibrating force, so as to realize the intelligent closed loop control to external vibration. A structural vibration control system which is constructed based on the self-powered and self-induction magnetorheological damper becomes very simple because no extra power input equipment and external vibrating force testing equipment are needed, so that the application cost is greatly reduced, and the self-powered and self-induction magnetorheological damper is particularly applicable to application occasions on which spaces are limited and power supply is inconvenient, such as large buildings, bridges and the like.
Description
Technical field
The present invention relates to a kind of half active magnetic rheology vibration control technology, is exactly a kind of self-powered self-induction MR damper specifically.
Background technique
MR damper be a kind of be half ACTIVE CONTROL damper of working medium with the intellectual material magnetic flow liquid, by control to input current, its electromagnetic field intensity that is carried on the magnetic flow liquid is changed, and then can be that the rheological properties of magnetic flow liquid changes in a few tens of milliseconds time range, realize the transformation between fluid and the semisolid, thereby controllable damping force can be provided.Hydraulic damper than routine, MR damper has advantages such as volume is little, simple in structure, damping force is big, dynamic range is wide, low in energy consumption, the reliability that had both had Passive Control, the transmission adjustability that has ACTIVE CONTROL again, be applied to the vibration control in fields such as automotive engineering, construction engineering, Aero-Space just gradually, and obtained good control effect.The present comparative maturity that has developed about the theoretical research of MR damper, at different applications, its theoretical model, structural design control technique etc. have all had profuse design experiences.Yet compare with the flourish of its theory and technology, the magneto-rheological vibration damping technology is used from large-scale engineering also has very big distance, and conventional dydraulic shock absorber remains the shockproof main selection of present antivibration.This is caused by a lot of reasons, and wherein The Applications of Magnetorheological Dampers cost and reliability are two main causes of its extensive use of restriction.When utilizing MR damper to make up the intelligent vibration control system, need to be equipped with power apparatus to the electromagnetic field of MR damper power supply with generation control magnetic flow liquid, also need to be equipped with force transducer equipment in addition simultaneously and measure extraneous vibration power, so that be input to size of current on the piston coil according to the variation adjustment of extraneous vibration power, realize the intelligent control of vibration to external world.And in the practical engineering application process, external power supply and force transducer equipment not only make the complicated of whole vibration control system change, reduce the reliability of magnetorheological intelligent vibration system, and can increase application cost widely, these all will hinder the large-scale engineering applications of magnetorheological vibrational energy technology.
Summary of the invention
Purpose of the present invention needs the deficiency of external power supply and damping force detection facility at common magnetorheological vibration control system, a kind of external power supply input that do not need is proposed, simultaneously can be from the self-powered self-induction MR damper of perception extraneous vibration power, it comprises magnetorheological part, permanent-magnet linear power generation part, piezo-electric damping power sensing part and electric power signal control module.Under extraneous oscillating action, self energizing self-induction MR damper can utilize the permanent-magnet linear power generation part to collect electric energy, piezo-electric damping power sensing part will produce electric charge under extraneous vibration force effect simultaneously, and the quantity of electric charge that produces is directly proportional with the size of extraneous vibration power; Store control by the electric energy that the electric power signal control module is collected the permanent-magnet linear power generation part, and the electric charge that piezo-electric damping power sensing part is produced carries out analysing and processing, the size of prediction extraneous vibration power, be input to size of current on the MR damper piston coil according to the size adjustment of extraneous vibration power then, thereby realize the closed loop intelligent control of vibration to external world, realize the self energizing self-induction function of MR damper.
A kind of self-powered self-induction MR damper comprises connecting rod, upper end cap, stator, first guide sleeve, magnetic pole, permanent magnet, electromagnetic coil, piston rod, connection end cap, second guide sleeve, Sealing, cylinder body, the piston that is wound with coil, bottom cover, charge signal line, bottom earrings, piezoelectric electrode, piezo-electric sheet, sheet rubber, air bag, lead and electric power signal control module.Cylinder body is full of magnetic flow liquid with being connected between end cap and the air bag, and air bag is in order to the variation of spatial volume in the compensating piston bar turnover cylinder body that cylinder body caused; Piston is installed in the cylinder body, and piston rod one end and piston are fixed, and the other end of piston rod stretches out outside the cylinder body by connecting end cap; Permanent magnet and magnetic pole are sleeved on the end that piston rod stretches out cylinder body, and are fixed up by outer tie rod, can move together along with outer tie rod and piston rod; Stator is fixed on the cylinder body by connecting end cap, and electromagnetic coil is wound in the stator interior groove; Two piezoelectric electrode cover two surfaces up and down of piezo-electric sheet respectively, and sheet rubber is incumbent on following two piezoelectric electrode, and the bottom earrings is fixedly connected on bottom head cover with piezo-electric sheet, piezoelectric electrode and sheet rubber; The charge signal line is connected the first input end of piezoelectric electrode with the electric power signal control module, lead will be wound on the interior electromagnetic coil of stator and second input end of electric power signal control module is connected, and the output terminal of electric power signal control module is connected by the coil on the piston of lead and MR damper simultaneously.
During self energizing self-induction MR damper of the present invention work, outside connecting rod promotes piston rod and pumps, and also just drives permanent magnet and does in stator interior and pump.Permanent magnet causes that in the athletic meeting of stator interior the magnetic flux in the electromagnetic coil that is wound in the stator groove changes, thereby produces induction electromotive force.Simultaneously, when piston rod moves in cylinder body, the power that acts on the piston rod will be applied on the piezo-electric sheet by cylinder body, the stressed generation electric charge of piezo-electric sheet.By the direct piezoelectric effect of piezoelectric material as can be known, the quantity of electric charge that piezoelectric material produces under pressure is directly proportional with the pressure size.Answer the induction electromotive force of line generation to be input on the electric power signal control module electric charge and electromagnetic coil cutting magnetic induction that piezo-electric sheet produces, the electric power signal control module will be stored control processing to the induction electromotive force that electromagnetic coil produces, be applied to then above the piston coil of MR damper, and the size of current that is applied to inside the piston coil is controlled by the charge value of piezo-electric sheet generation.So when extraneous vibration power was big, the quantity of electric charge that piezo-electric sheet produces was just big, the electric current that therefore is applied on the MR damper is just big, and the damping force that damper provides is just big, thereby realizes the intelligent control of vibration to external world, need not external electric energy input simultaneously.
The beneficial effect that technical solution of the present invention realizes:
Self energizing self-induction MR damper of the present invention does not need the external electric energy input, can adjust the size of output damping force according to the size of extraneous vibration power in real time simultaneously, thereby realizes the intelligent closed loop control of vibration to external world.Structural Vibration Control Systems based on this self energizing self-induction MR damper structure, owing to do not need extra power supply input device and external vibration power testing apparatus, to become very succinct, also reduced application cost widely, be specially adapted to the application places of space finite sum power supply inconvenience, as: heavy construction and bridge etc.
Description of drawings
Fig. 1 is the structural representation of self energizing self-induction MR damper of the present invention;
Fig. 2 is the structure principle chart of self energizing self-induction MR damper power generation part of the present invention.
Embodiment
Describe technological scheme of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, self energizing self-induction MR damper of the present invention comprises outside connecting rod 1, upper end cap 2, stator 3, first guide sleeve 4, magnetic pole 5, permanent magnet 6, electromagnetic coil 7, piston rod 8, connects end cap 9, second guide sleeve 10, Sealing 11, cylinder body 12, the piston 13 that is wound with coil, bottom cover 14, charge signal line 15, bottom earrings 16, piezoelectric electrode 17, piezo-electric sheet 18, sheet rubber 19, air bag 20, lead 21 and electric power signal control module 22.Wherein, stator 3 and magnetic pole 5 are made by the electromagnetic pure iron DT4E of high magnetic permeability.Piston rod 8 and outside connecting rod 1 are made by non-magnet_conductible material.Upper end cap 2 be connected end cap 9 and make by non-magnet_conductible material.The piston 13 and the cylinder body 14 that are wound with coil are made by No. 20 low carbon steel.First guide sleeve 4 and second guide sleeve 10 are made by wear-resisting and non-magnet_conductible material tin bronze ZQSn6-6-3.The electric polarization direction of piezo-electric sheet 18 is along its axial direction, and is subjected to the pressure effect of axial direction.
Be full of magnetic flow liquid at cylinder body 12 with being connected between end cap 9 and the air bag 20, Sealing 11 is sealed in magnetic flow liquid in the cylinder body, the variation of spatial volumes in the cylinder body 12 that air bag 20 is caused in order to compensating piston bar 8 turnover cylinder bodies 12; Piston 13 is installed in the cylinder body 12, and piston rod 8 one ends and piston 13 are fixing, and the other end of piston rod 8 stretches out outside the cylinder body 12 by connecting end cap 9; Guide sleeve 10 is used for controlling piston rod 8, thereby guarantees between piston 13 and the cylinder body 12 a fixing fluid gap is arranged; Permanent magnet 6 and magnetic pole 5 are sleeved on the end that piston rod 8 stretches out cylinder body 12, and are fixed up by outer tie rod 1, can move together along with outer tie rod 1 and piston rod 8; Stator 3 is fixed on the cylinder body 12 by connecting end cap 9, and electromagnetic coil 7 is wound in stator 3 internal recess, and guarantee coiling finish after the outer surface of stator 3 internal surfaces and permanent magnet 6 a fixing annulus gap is arranged; Two piezoelectric electrode 17 cover two surfaces up and down of piezo-electric sheet 18 respectively, sheet rubber 19 is incumbent on following two piezoelectric electrode 17, and bottom earrings 16 is fixedly connected on piezo-electric sheet 18, piezoelectric electrode 17 and sheet rubber 19 on the bottom head covers 14 of MR damper together; Charge signal line 15 couples together the first input end (in1) of piezoelectric electrode 17 and electric power signal control module 22, lead 21 will be wound on electromagnetic coil 7 in the stator 3 and second input end (in2) of electric power signal control module 22 is connected, and the output terminal of electric power signal control module 22 links together by the piston coil of lead 21 and MR damper.During the work of this self energizing self-induction MR damper, outside connecting rod 1 promotes piston rod 8 and pumps, because permanent magnet 6 is fixed between piston rod 8 and the outside connecting rod 1, does in stator 3 inside and pumps so also just drive permanent magnet 6.By the law of electromagnetic induction as can be known, the magnetic flux of permanent magnet 6 athletic meeting in stator 3 inside causing in the electromagnetic coil 7 that is wound in stator 3 grooves changes, thereby produces induction electromotive force.Simultaneously, when piston rod 8 promotion pistons 13 move in cylinder body 12, the power that acts on the piston rod 8 will be applied on the piezo-electric sheet 18 by cylinder body 12, piezo-electric sheet 18 stressed generation electric charges.By the direct piezoelectric effect of piezoelectric material as can be known, the quantity of electric charge that piezoelectric material produces under pressure is directly proportional with the pressure size, and therefore the quantity of electric charge that piezo-electric sheet 18 produces when external vibration power is big when just greatly.Answer the induction electromotive force of line generation to be input on the electric power signal control module 22 electric charge and electromagnetic coil 7 cutting magnetic inductions that piezo-electric sheet 18 produces, electric power signal control module 22 will be stored control processing to the induction electromotive force that electromagnetic coil 7 produces, be applied to then above the piston coil of MR damper, and the size of current that is applied to inside the piston coil is controlled by the charge value of piezo-electric sheet 18 generations.So when extraneous vibration power was big, the quantity of electric charge that piezo-electric sheet produces was just big, the electric current that therefore is applied on the MR damper is just big, and the damping force that damper provides is just big, thereby realizes the intelligent control of vibration to external world, need not external electric energy input simultaneously.
The present invention has simultaneously taked a series of measures to improve the generating rate of permanent magnet generator part, and the piston coil that the electric energy that assurance electromagnetic coil 7 is collected enough drives MR damper generates an electromagnetic field, referring to shown in Figure 2.Fig. 2 is the structural representation of self energizing self-induction MR damper power generation part of the present invention, the magnetic line of force that permanent magnet 6 produces passes the T shape tooth 23 that the air air gap enters stator 3 inside, and get back to another utmost point of permanent magnet 6 via outer cross section, T shape tooth 23 and the air air gap of stator 3, form permanent magnet magnetic force line loop 24.When permanent magnet 6 along with piston rod 8 when bore of stator pumps, flux loop 24 also will move up and down, thereby cause electromagnetic coil 7 cutting magnetic inductions to answer line to produce induction electromotive force.In order to increase generating efficiency, make the enough driven plunger coils of the induction electromotive force that produces produce controlling magnetic field, T shape tooth 23 structures are adopted on the stator 3 inner surfaces of this power generation part, can increase the area of contact of the magnetic line of force and stator 3 effectively, thereby can make the more magnetic line of force pass the air air gap and form closed loop, improve the magnetic field utilization ratio of permanent magnet 6, increase the value of induction electromotive force; Secondly the magnetic polarization direction 25 of two adjacent permanent magnets 6 is opposite, the magnetic pole 5 that a high magnetic permeability is arranged between the adjacent permanent magnet 6 simultaneously, therefore in permanent magnet 6 homopolarity connecting parts, two groups of magnetic lines of force because of homopolar-repulsion by intensive compression and orthogonal vertical pass the air air gap, so just reduced the actual air-gap thickness of passing of the magnetic line of force, thereby can strengthen the generating magnetic intensity, improve the value of induction electromotive force; The piston rod 8 and the outside connecting rod 1 that connect permanent magnet 6 and magnetic pole 5 are simultaneously all made by non-magnet_conductible material, so just can stop the magnetic line of force and form the closed-loop path by piston rod 8, reduced the leakage of the magnetic line of force, thereby also can increase the value of induction electromotive force, the coil piston that the electric energy that makes the permanent-magnet linear power generation part produce enough drives MR damper generates an electromagnetic field.
Claims (7)
1. a self-powered self-induction MR damper is characterized in that comprising connecting rod, upper end cap, stator, first guide sleeve, magnetic pole, permanent magnet, electromagnetic coil, piston rod, connection end cap, second guide sleeve, Sealing, cylinder body, the piston that is wound with coil, bottom cover, charge signal line, bottom earrings, piezoelectric electrode, piezo-electric sheet, sheet rubber, air bag, lead and electric power signal control module; Wherein,
Be full of magnetic flow liquid with the described described inner chamber of cylinder block that is connected between end cap and the described air bag, described air bag passes in and out the variation of spatial volume in the described cylinder body that is caused with described cylinder body in order to compensation and described piston rod;
Described piston is installed in the described cylinder body, and described piston rod one end and described piston are fixed, and the other end stretches out outside the described cylinder body by described connection end cap;
Described permanent magnet and described magnetic pole are sleeved on the end that described piston rod stretches out cylinder body, and are fixed up by described outer tie rod;
Described stator is fixed on the described cylinder body by connecting end cap, and described electromagnetic coil is wound in the stator interior groove;
Two piezoelectric electrode cover two surfaces up and down of piezo-electric sheet respectively, and sheet rubber is incumbent on following two piezoelectric electrode; Described bottom earrings is fixedly connected on bottom head cover with described piezo-electric sheet, described piezoelectric electrode and described sheet rubber;
Described charge signal line is connected the first input end of piezoelectric electrode with the electric power signal control module, lead will be wound on the interior electromagnetic coil of stator and second input end of electric power signal control module is connected, and the output terminal of electric power signal control module is connected by the coil on the piston of lead and MR damper simultaneously.
2. self-powered self-induction MR damper according to claim 1 is characterized in that making at described stator and the described magnetic pole electromagnetic pure iron DT4E by high magnetic permeability.
3. self-powered self-induction MR damper according to claim 1 is characterized in that described piston rod and described outside connecting rod made by non-magnet_conductible material.
4. self-powered self-induction MR damper according to claim 1 is characterized in that described upper end cap made by non-magnet_conductible material with the described end cap that is connected.
5. self-powered self-induction MR damper according to claim 1 is characterized in that described piston and the cylinder body that is wound with coil made by No. 20 low carbon steel.
6. self-powered self-induction MR damper according to claim 1 is characterized in that described first guide sleeve and described second guide sleeve made by tin bronze ZQSn6-6-3.
7. self-powered self-induction MR damper according to claim 1, the electric polarization direction that it is characterized in that described piezo-electric sheet be along its axial direction, and be subjected to the pressure effect of axial direction.
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| CN2011101513364A CN102287474A (en) | 2011-06-03 | 2011-06-03 | Self-powered and self-induction magnetorheological damper |
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| CN2011101513364A CN102287474A (en) | 2011-06-03 | 2011-06-03 | Self-powered and self-induction magnetorheological damper |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148159A (en) * | 2013-03-18 | 2013-06-12 | 中国人民解放军装甲兵工程学院 | Composite actuator and control method thereof |
| CN103391065A (en) * | 2012-05-08 | 2013-11-13 | 三星电机株式会社 | Piezoelectric vibration module |
| CN103758911A (en) * | 2014-01-27 | 2014-04-30 | 安徽柳工起重机有限公司 | Vehicle magneto-rheological oil gas suspension damping valve |
| CN104154169A (en) * | 2014-07-18 | 2014-11-19 | 湘潭大学 | Self-powered electrorheological elastomer damper |
| CN104165204A (en) * | 2014-07-25 | 2014-11-26 | 华侨大学 | Energy feedback type damper combining piezoelectric ceramic and magnetorheological fluid |
| CN104776152A (en) * | 2015-04-08 | 2015-07-15 | 重庆大学 | High-efficiency and low-power-consumption magnetorheological semi-active and active integrated vibration damping device |
| CN104930112A (en) * | 2015-05-07 | 2015-09-23 | 江苏大学 | Self-energized damping-adjustable shock-absorbing device |
| CN105511513A (en) * | 2015-11-24 | 2016-04-20 | 西安空间无线电技术研究所 | Electromagnetic damping type vibrations controlling apparatus of spaceborne equipment |
| CN105546020A (en) * | 2016-01-07 | 2016-05-04 | 南京航空航天大学 | Magnetorheological damper with piezoelectric energy recovery function |
| CN107461447A (en) * | 2016-06-04 | 2017-12-12 | 曲行舟 | Damping device with totally-enclosed stiffness variable damping system and linear generating system |
| CN108980259A (en) * | 2018-07-10 | 2018-12-11 | 杭州电子科技大学 | A kind of adaptive shimmy-damper suitable for electric car |
| CN111623080A (en) * | 2020-05-13 | 2020-09-04 | 嘉兴学院 | Engine torsional vibration damper based on magnetorheological grease |
| CN112196929A (en) * | 2020-10-23 | 2021-01-08 | 清华大学 | Magnetic liquid damping shock absorber with step surface |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391065A (en) * | 2012-05-08 | 2013-11-13 | 三星电机株式会社 | Piezoelectric vibration module |
| CN103391065B (en) * | 2012-05-08 | 2016-05-25 | Mplus株式会社 | Piezoelectric vibration module |
| CN103148159A (en) * | 2013-03-18 | 2013-06-12 | 中国人民解放军装甲兵工程学院 | Composite actuator and control method thereof |
| CN103148159B (en) * | 2013-03-18 | 2014-12-31 | 中国人民解放军装甲兵工程学院 | Composite actuator and control method thereof |
| CN103758911B (en) * | 2014-01-27 | 2016-02-10 | 安徽柳工起重机有限公司 | The magnetorheological hydro pneumatic suspension orifice valve of vehicle |
| CN103758911A (en) * | 2014-01-27 | 2014-04-30 | 安徽柳工起重机有限公司 | Vehicle magneto-rheological oil gas suspension damping valve |
| CN104154169A (en) * | 2014-07-18 | 2014-11-19 | 湘潭大学 | Self-powered electrorheological elastomer damper |
| CN104165204A (en) * | 2014-07-25 | 2014-11-26 | 华侨大学 | Energy feedback type damper combining piezoelectric ceramic and magnetorheological fluid |
| CN104776152A (en) * | 2015-04-08 | 2015-07-15 | 重庆大学 | High-efficiency and low-power-consumption magnetorheological semi-active and active integrated vibration damping device |
| CN104930112A (en) * | 2015-05-07 | 2015-09-23 | 江苏大学 | Self-energized damping-adjustable shock-absorbing device |
| CN105511513A (en) * | 2015-11-24 | 2016-04-20 | 西安空间无线电技术研究所 | Electromagnetic damping type vibrations controlling apparatus of spaceborne equipment |
| CN105546020A (en) * | 2016-01-07 | 2016-05-04 | 南京航空航天大学 | Magnetorheological damper with piezoelectric energy recovery function |
| CN107461447A (en) * | 2016-06-04 | 2017-12-12 | 曲行舟 | Damping device with totally-enclosed stiffness variable damping system and linear generating system |
| CN108980259A (en) * | 2018-07-10 | 2018-12-11 | 杭州电子科技大学 | A kind of adaptive shimmy-damper suitable for electric car |
| CN111623080A (en) * | 2020-05-13 | 2020-09-04 | 嘉兴学院 | Engine torsional vibration damper based on magnetorheological grease |
| CN111623080B (en) * | 2020-05-13 | 2021-07-23 | 嘉兴学院 | Engine torsional vibration damper based on magnetorheological grease |
| CN112196929A (en) * | 2020-10-23 | 2021-01-08 | 清华大学 | Magnetic liquid damping shock absorber with step surface |
| CN112196929B (en) * | 2020-10-23 | 2021-08-20 | 清华大学 | Magnetic liquid damping shock absorber with step surface |
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Application publication date: 20111221 |