CN109737162A - A kind of electric and magnetic oscillation recovers energy tuned mass damper - Google Patents
A kind of electric and magnetic oscillation recovers energy tuned mass damper Download PDFInfo
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- CN109737162A CN109737162A CN201811615501.5A CN201811615501A CN109737162A CN 109737162 A CN109737162 A CN 109737162A CN 201811615501 A CN201811615501 A CN 201811615501A CN 109737162 A CN109737162 A CN 109737162A
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- mass damper
- tuned mass
- assembly
- flange
- coil
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Abstract
It recovers energy tuned mass damper the invention discloses a kind of electric and magnetic oscillation, the tuned mass damper includes the assembly of ferromagnetic magnetic stone ring, spring assembly and coil assembly, the ferromagnetic magnetic stone ring assembly is made of upper ferromagnetic body, annular magnet assembly, bottom ferromagnetic body, the coil assembly is made of coil, auxiliary rod and basic flange, and the spring assembly is made of upper flange, spring and lower flange.Spring fits through bolt and connect with upper ferromagnetic body, is connect by lower bolt with the structure (main structure) for inhibiting vibration is needed.Therefore the vibration of main structure generates the relative motion between coil and the assembly of ferromagnetic magnetic stone ring, and the electromotive force inside conducting wire is caused from this.Tuned mass damper of the invention can not only inhibit to vibrate, and can recycle vibrational energy as electrical power.
Description
Technical field
The invention belongs to machinery to inhibit vibration and energy collection technology field, be related to a kind of tuned mass damper, specifically
It is related to a kind of electric and magnetic oscillation to recover energy tuned mass damper.
Background technique
Due to lacking fossil fuel, energy collection technology is increasingly paid attention to.Substantially energy collection technology is divided into following four
A direction: electromagnetism, piezoelectricity, electrostatic, hot spot formula.
Electromagnetic energy collection technique is based on the vibration energy and resonance effect, and basic conception is the equipment installation that will recover energy
To main structure, the vibration that then main structure is received is transmitted to the equipment that recovers energy, therefore it is made to reach resonance frequency, from this equipment
Electromagnetic-energy is changed into for the energy is vibrated using Electromagnetic generation faraday principle.According to recovering energy, collection technique theory recovers energy
The quality of equipment is less than normal than main structure, so equipment will not generate main structure influence.This equipment applies generally to micro-electro-mechanical systems
It unites (MEMS).
The basic conception of tuned mass damper is that tuned mass damper is installed to the knot for needing to control vibration
Structure is as main structure.(tuning quality damps according to the parameter of main structure for the rigidity of tuned mass damper, quality, damping parameter
Device is theoretical) it is selected in advance.Make tuned mass damper be based on kinetic energy in this way to inhibit to vibrate, but the model narrow in frequency
It encloses, close to main structure resonance frequency.
In order to relax tuned mass damper operating frequency range and improve vibration damping controlling, CN108374330A is disclosed
A kind of half active electromagnetic resonance tuned mass damper, the tuned mass damper are adjustable using resistance+inductance+capacitor road
Ampere force.CN103938751A discloses a kind of self-powered semi-active tuned mass damper.The damping of both tuning qualities
The defect of device is: the energy of recycling is on the low side, because the main target of these structures is power supply only for carrying out vibration control, is based on
Semi-active system.And due to tuned mass damper is suitable on building engineering structure, these equipment do not have tight
Close characteristic, is unfavorable for macro.
Summary of the invention
The object of the present invention is to provide a kind of electromagnetic vibrations that can be achieved at the same time recycling vibrational energy and inhibit mechanical oscillation
The dynamic tuned mass damper that recovers energy, quality, rigidity and the damping parameter of the tuned mass damper are hindered according to tuning quality
Buddhist nun's device theory selects.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of electric and magnetic oscillation recovers energy tuned mass damper, including the assembly of ferromagnetic magnetic stone ring, spring assembly and line
Circle assembly；
The ferromagnetic magnetic stone ring assembly is made of upper ferromagnetic body, annular magnet assembly, bottom ferromagnetic body, in which: institute
The cross section for stating upper ferromagnetic body is T-type, is made of one piece by lateral ferromagnet and longitudinal iron core；The annular magnet assembly
It is sleeved on the outside of longitudinal iron core with bottom ferromagnetic body, and annular magnet assembly is located between lateral ferromagnet and bottom ferromagnetic body；
The upper ferromagnetic body, annular magnet assembly pass through magnetic force between bottom ferromagnetic body and link；The inner surface of the bottom ferromagnetic body
Annulus gap is formed between the outer surface of longitudinal iron core；
The coil assembly is made of coil, auxiliary rod and basic flange, in which: the inner hollow of the auxiliary rod is indulged
It can move up and down to the lower end of iron core in the inside of auxiliary rod；The auxiliary rod has been externally wrapped with coil, and coil is placed on ring
In shape air gap；The bottom of the auxiliary rod is provided with basic flange；
The spring assembly is made of upper flange, spring and lower flange, in which: the upper flange is fixed on bottom ferromagnetic body
Lower surface；The lower flange is fixed on the upper surface of basic flange；The spring pocket is mounted in coil outer, the both ends point of spring
It is not fixed on upper flange and lower flange.
Compared with the prior art, the present invention has the advantage that
1, tuned mass damper of the invention can not only inhibit to vibrate, and can recycle vibrational energy as electric work
Rate.
2, annular magnet assembly, bottom ferromagnetic body and the coil degree positioned opposite for being conducive to raising and recovering energy.
3, the arrangement of ferromagnetic magnetic stone ring assembly not only provides electromagnetic damping parameter, but also is damping as mass block
Device provides inertia force.Therefore it can make tuned mass damper that there is compact structure.
4, adjustable resistance is conducive to the accurate selection of electromagnetic damping parameter, therefore can provide optimal damper parameter, realizes
The optimal effectiveness of vibration suppression.
5, tuned mass damper structure of the invention is simple, compact, high reliablity, low cost, and maintenance cost is low.
6, tuned mass damper of the invention can be realized on a vehicle suspension, that is, be applied on wheel of vehicle, to mention
High road retentivity, while regenerative vibration energy.
Detailed description of the invention
Fig. 1 is that electric and magnetic oscillation recovers energy the structural schematic diagram of tuned mass damper；
Fig. 2 is the system mathematic model that recovers energy；
Fig. 3 is that electric and magnetic oscillation recovers energy the specific structure of tuned mass damper in embodiment.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawing, and however, it is not limited to this, all to this
Inventive technique scheme is modified or replaced equivalently, and without departing from the range of technical solution of the present invention, should all be covered in this hair
In bright protection scope.
As shown in Figure 1, electric and magnetic oscillation provided by the invention recovers energy, tuned mass damper is filled by ferromagnetic magnetic stone ring
Match, spring assembly and coil assembly are constituted.
The ferromagnetic magnetic stone ring assembly is made of upper ferromagnetic body 1, annular magnet assembly 2, bottom ferromagnetic body 3, in which:
The cross section of the upper ferromagnetic body 1 is T-type, is made of one piece by lateral ferromagnet and longitudinal iron core；The annular magnet
Component 2 and bottom ferromagnetic body 3 are sleeved on the outside of longitudinal iron core, and annular magnet assembly 2 is located at lateral ferromagnet and bottom ferromagnetic
Between two kinds of ferromagnetic materials of body；The upper ferromagnetic body 1, annular magnet assembly 2 pass through magnetic force between bottom ferromagnetic body 3 and link；
Annulus gap is formed between the inner surface of the bottom ferromagnetic body 3 and the outer surface of longitudinal iron core.
The coil assembly is made of coil 7, auxiliary rod 8 and basic flange 9, in which: in the inside of the auxiliary rod 8
The lower end of sky, longitudinal iron core can move up and down in the inside of auxiliary rod 8；The auxiliary rod 8 has been externally wrapped with coil 7, coil 7
It is placed in annulus gap；The bottom of the auxiliary rod 8 is provided with basic flange 9.By to magnetic density in annulus gap
Analysis is it is found that filled with uniform magnetic field in annulus gap.Magnetic induction vector B is radially directed, outside from structural core.Therefore, root
According to Ampere's law, the relative motion of coil 7 and bottom ferromagnetic body 3 will cause the electromotive force inside conducting wire.
The spring assembly is made of upper flange 4, spring 6 and lower flange 11, in which: the upper flange 4 passes through upper bolt 5
It is fixed on the lower surface of bottom ferromagnetic body 3；The lower flange 11 is fixed on the upper surface of basic flange 9 by lower bolt 10；Institute
It states spring 6 to be sleeved on outside coil 7, the both ends of spring 6 are respectively welded on upper flange 4 and lower flange 11.Spring fits through
Upper bolt 5 is connect with upper ferromagnetic body 1, is connect by lower bolt 10 with the structure (main structure) for inhibiting vibration is needed.Therefore main
The vibration of structure generates the relative motion between coil 7 and the assembly of ferromagnetic magnetic stone ring, and the electromotive force inside conducting wire is caused from this.
As shown in Fig. 2, coil is connected to load circuit, by the impedance operator R for adjusting load circuitloadSo that circuit
Electric current changes, and Ampere force f can be generated in magnetic field from this current-carrying coilEMF.Thence through selection load impedance characteristic Rload
Most suitable damping parameter can be selected to inhibit the vibration of main structure according to tuned mass damper theory.Therefore, can not only press down
Damping is dynamic, and can collect electrical power in load circuit.
With reference to Fig. 2, the Kirchhoff's law of circuit gives the expression formula of electric current:
In formula: z2=y2-y1, indicate the relative displacement between tuned mass damper and main structure；ktIt is electromechanical coupling
Number, can be write as kt=-NBl, wherein N is coil turn, and B is the average magnetic field density in air gap, and l is coil length；R difference
By coil resistance RcoilWith load resistance RloadComposition, R=Rcoil+Rload；LcoilIt is coil inductance coefficient (unit: Henry), ω
It is main structure driving frequency (unit: radian per second)
According to Ampere's law, in uniform magnetic field and in the case that vector B and conductor length are mutually perpendicular to, electromagnetism is given
The expression formula of power:
fEMF=kt·i (2)。
In the current situation, electromagnetic force and moving direction be on the contrary, therefore, according to equation (1) and equation (2), due to
The low value of frequency ignores inductance coefficent, and the electromagnetic damping coefficient of system is:
de=kt ∧2/(Rcoil+Rload) (3)。
Total damping:
C=dm+de (4)。
In formula, dmIt is mechanically or thermally loss damping.
Therefore, by selecting RloadValue, damping needed for system can be provided and maximum power output performance.
Embodiment:
By quality be 40 kilograms and rigidity be 157880 Newton/meters main structure for, the structure amplitude be 0.005m,
Frequency is to be exposed under the harmonic vibration of 62.8 radian per seconds acts on, equal with the intrinsic frequency of structure.In order to protect this knot
Structure is recovered energy tuned mass damper from destroying using electric and magnetic oscillation of the invention.It is best according to tuned mass damper
Theory inhibits vibrating effect, and the tuned mass damper structural parameters selected in the present embodiment are as follows: quality is 8 kilograms, rigidity
For 21752 Newton/meters, damping parameter is 219 * seconds/rice of newton.
Due to FeNdB grades of N52 of rare earth permanent-magnetic material residual magnetic flux density with higher and economy, it is selected as ring
The material of shape magnet assembly.The material of bottom ferromagnetic body and upper ferromagnetic body has selected mild steel 1010, and this material has phase
When magnetic conductivity, be conducive to effectively magnetic flux amount.
According to density of material and in order to which the quality for realizing tuned mass damper movable part is 8 kilograms, selection is following
Size: interior through dm=60 millimeters, outer diameter D=120 millimeter of annular magnet assembly, hm=40 millimeters of height；Bottom ferromagnetic body
It is interior through dm=60 millimeters, outer diameter D=120 millimeter, hb=35 millimeters of height；Outer diameter D=120 millimeter of upper ferromagnetic body, bar
Db=45 millimeters of diameter, hu=20 millimeters of upper disk height.Due to having used spring in the present embodiment, but reach the rigidity of structure
21752 (Newton/meters).Coil dimension selects as follows according to generated the air gap: hcoil=90 millimeters of height, outside diameter d o
It is=56 millimeters, interior through di=50 millimeters, dco=0.00025 millimeters of line footpath.Specific structure is as shown in Figure 3.
In order to provide damping parameter * seconds/rice of c=219 newton, according to equation (4) and the anti-Europe Rcoil=10.8 of coil resistance
Nurse, heat loss damp dm=8.5, have obtained load resistance to resist being 350 ohm.
Therefore, tuned mass damper of the invention is installed to main structure to be able to maintain main structure carry-over factor is 3, and
And vibration recovers energy as electrical power simultaneously.Under the harmonic excitation of main structure, tuned mass damper of the invention can
The peak power of generation is 500 watts.
Claims (8)
- The tuned mass damper 1. a kind of electric and magnetic oscillation recovers energy, it is characterised in that the tuned mass damper includes ferromagnetic The assembly of body magnet ring, spring assembly and coil assembly；The ferromagnetic magnetic stone ring assembly is made of upper ferromagnetic body, annular magnet assembly, bottom ferromagnetic body, in which: on described The ferromagnetic cross section in portion is T-type, is made of one piece by lateral ferromagnet and longitudinal iron core；The annular magnet assembly and bottom Portion's ferromagnet is sleeved on the outside of longitudinal iron core, and annular magnet assembly is located between lateral ferromagnet and bottom ferromagnetic body；It is described Upper ferromagnetic body, annular magnet assembly pass through magnetic force between bottom ferromagnetic body and link；The inner surface of the bottom ferromagnetic body and vertical Annulus gap is formed between the outer surface of iron core；The coil assembly is made of coil, auxiliary rod and basic flange, in which: the inner hollow of the auxiliary rod, Zong Xiangtie The lower end of core can move up and down in the inside of auxiliary rod；The auxiliary rod has been externally wrapped with coil, and coil is placed on annular gas In gap；The bottom of the auxiliary rod is provided with basic flange；The spring assembly is made of upper flange, spring and lower flange, in which: the upper flange is fixed under bottom ferromagnetic body Surface；The lower flange is fixed on the upper surface of basic flange；The spring pocket is mounted in coil outer, and the both ends of spring are solid respectively It is scheduled on upper flange and lower flange.
- The tuned mass damper 2. electric and magnetic oscillation according to claim 1 recovers energy, it is characterised in that the annular magnetic The material of body component uses rare earth permanent-magnetic material.
- The tuned mass damper 3. electric and magnetic oscillation according to claim 2 recovers energy, it is characterised in that the rare earth is forever Magnetic material is FeNdB rare earth permanent-magnetic material.
- The tuned mass damper 4. electric and magnetic oscillation according to claim 1 recovers energy, it is characterised in that the bottom iron The material of magnet and upper ferromagnetic body uses mild steel.
- The tuned mass damper 5. electric and magnetic oscillation according to claim 4 recovers energy, it is characterised in that the mild steel For mild steel 1010.
- The tuned mass damper 6. electric and magnetic oscillation according to claim 1 recovers energy, it is characterised in that the upper flange The lower surface of bottom ferromagnetic body is fixed on by upper bolt.
- The tuned mass damper 7. electric and magnetic oscillation according to claim 1 recovers energy, it is characterised in that the lower flange The upper surface of basic flange is fixed on by lower bolt.
- The tuned mass damper 8. electric and magnetic oscillation according to claim 1 recovers energy, it is characterised in that the spring Both ends are fixed on upper flange and lower flange by the method welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811615501.5A CN109737162A (en) | 2018-12-27 | 2018-12-27 | A kind of electric and magnetic oscillation recovers energy tuned mass damper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811615501.5A CN109737162A (en) | 2018-12-27 | 2018-12-27 | A kind of electric and magnetic oscillation recovers energy tuned mass damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952710A (en) * | 2021-04-15 | 2021-06-11 | 浙江维思无线网络技术有限公司 | Intelligent lead shockproof hammer |
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| CN107327038A (en) * | 2017-06-19 | 2017-11-07 | 同济大学 | A kind of eddy current tuned mass damper based on vibration energy regeneration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952710A (en) * | 2021-04-15 | 2021-06-11 | 浙江维思无线网络技术有限公司 | Intelligent lead shockproof hammer |
| CN112952710B (en) * | 2021-04-15 | 2022-05-17 | 浙江维思无线网络技术有限公司 | Intelligent lead shockproof hammer |
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Application publication date: 20190510 |