CN107165973A - A kind of shock absorber based on magnetic converting technique - Google Patents
A kind of shock absorber based on magnetic converting technique Download PDFInfo
- Publication number
- CN107165973A CN107165973A CN201710500897.8A CN201710500897A CN107165973A CN 107165973 A CN107165973 A CN 107165973A CN 201710500897 A CN201710500897 A CN 201710500897A CN 107165973 A CN107165973 A CN 107165973A
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- Prior art keywords
- magnetic
- iron core
- shock absorber
- vibration
- circuit iron
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
- B25J19/0091—Shock absorbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
- F16F7/1005—Vibration-dampers; Shock-absorbers using inertia effect characterised by active control of the mass
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Robotics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to the vibration absorber applied to fields such as flexible mechanical arm, engine system vibration dampings, more particularly to a kind of vibration absorber based on magnetic converting technique.Shock absorber based on magnetic converting technique, including：Fixed seat, Damping modules and control module.Fixed seat is vibration control object；Damping modules by magnetic circuit iron core, magnetic rheology elastic body, absorbing mass, coil baffle plate, magnet exciting coil, train wheel bridge, constitute every magnetic patch, lower plate；Control module is made up of acceleration transducer, data collecting system, control main frame, dc source.By adjusting the exciting current on magnet exciting coil, the rigidity of magnetic rheology elastic body is adjusted, so as to meet the vibration frequency needs for realizing vibration control object vibration damping.The present invention has good damping result, applicable band scope is wide, consumed energy is few, advantages of simple structure and simple.
Description
Technical field
The present invention relates to the vibration absorber applied to fields such as flexible mechanical arm, engine system vibration dampings, more particularly to
A kind of vibration absorber based on magnetic converting technique.
Background technology
Shock absorber plays an important roll for flexible mechanical arm, engine system.Flexible mechanical arm, engine system operation
When, its vibration can influence reliability and the life-span of equipment, and can cause noise and vibration in the working environment of equipment.Cause
This, for flexible mechanical arm, the vibration problem of engine system, designs a kind of flexible mechanical arm, the vibration control of engine system
Device processed has important meaning.
In order to reduce the influence that flexible mechanical arm, engine system are vibrated, one is added generally on vibration control object
Shock absorber, structure type, kinetic parameter and the coupled relation with goal systems of appropriate selection shock absorber, changes vibration control
The vibrational state of object, so as to reduce the forced vibration response of the vibration control object in expected frequency range.Whether needed according to it
Energy input and the form for suppressing vibration, the method for realizing vibration control can be divided into passive control, active control and half actively
Control.Passive control cost is low, and no adaptive ability is only applicable to narrow band vibration control；Active control belong to power control, it is necessary to
The energy of controling power is directly provided, energy expenditure is larger, and cost is higher, and structure is more complicated；Semi- active control belongs to state modulator,
Change the parameter of structure in real time according to the information of the vibratory response of structure or dynamic loading, so as to reach the purpose of vibration damping.
Magnetic rheology elastic body (MRE) is a kind of novel intelligent material, and the modulus of elasticity of this material can be by changing magnetic
Field intensity is adjusted.Based on above-mentioned principle, magnetic rheology elastic body is applied in shock absorber, produced by adjusting impressed current
Magnetic field, control magnetic rheology elastic body where vibrational system stiffness variation, realize that the rigidity of shock absorber can be with externally-applied magnetic field
Change and sequential change.And magnetic rheology elastic body has the advantages that response is fast, stability is good, easy to use.
Found by being retrieved to existing literature, at present, someone is subtracted using the material property of magnetic rheology elastic body to design
Vibrating device.For example, magnetic flowing deformation elastomer frequency shift type attenuator disclosed in the patent of application number 200520076452.4, for flexibility
The vibration control of structure has preferable effect, but significantly vibration control is difficult to carry out.In addition application number
A kind of flexible mechanical arm vibration absorber and method based on magnetic converting technique, Neng Goutong disclosed in 201310014657.9 patent
Overregulate magnet coil voltage change shock absorber stiffness parameters, but in this method iron core etc. as vibration insulating system oscillator,
Intensity to magnetic rheology elastic body has higher requirements, and limits the application of its bump leveller.
The present invention proposes a kind of subtracting based on magnetic converting technique towards flexible mechanical arm, the vibration problem of engine system
Shake device.According to the principal oscillation frequency of vibration control object, by adjusting the rigidity of magnetic rheology elastic body, change the intrinsic of shock absorber
Frequency, so as to realize in wider frequency range and consistently achieve optimal effectiveness in vibration suppression under larger frequency pace of change.
The content of the invention
It is an object of the invention to provide a kind of shock absorber based on magnetic converting technique, the device is semi-actively controlled vibration damping
Device, is mainly based upon the shearing work pattern of magnetic rheology elastic body, can according to the principal oscillation frequency of vibration control object, according to
The control method of setting, changes the rigidity of magnetic rheology elastic body by adjusting applied field strengths, fast and accurately automatically adjusts
The intrinsic frequency of shock absorber, so as to realize in wider frequency range and be consistently achieved under larger frequency pace of change good
Effectiveness in vibration suppression.To reach above-mentioned purpose, the present invention, which is adopted the following technical scheme that, to be achieved.
Shock absorber of the invention based on magnetic converting technique, it is characterised in that including fixed seat (9), Damping modules, control mould
Block, wherein：
The Damping modules include magnetic circuit iron core (1), magnetic rheology elastic body (2), absorbing mass (3), coil baffle plate
(4), magnet exciting coil (5), train wheel bridge (6), every magnetic patch (7), lower plate (8)；The magnetic circuit iron core (1) is Back Word type, Back Word type
A breach is provided with the middle of the upper end of section, Back Word type section lower end there are two to stretch out plate (10)；Between magnetic circuit iron core (1) breach
A sheet of magnetic rheology elastic body (2) is respectively fixedly connected on two medial surfaces of gap, the absorbing mass (3) is placed in two magnetic
In the middle of magnetorheological elastomer (2), and it is integral to be connected；The both sides cuboid of the magnetic circuit iron core (1) is wound with an excitation wire respectively
Enclose (5), and it is spacing using coil baffle plate (4)；Two stretching plates of magnetic circuit iron core (1) are arranged on described in two every magnetic patch (7)
(10) between fixed seat (9)；The magnetic circuit iron core (1) is cooperated by train wheel bridge (6) and lower plate (8) and is positioned at fixation
On seat (9), and clamped by bolt, nut；
The control module includes acceleration transducer (11), data collecting system (12), control main frame (13), direct current
Source (14)；Two acceleration transducers (11) are bonded on magnetic circuit iron core (1) and absorbing mass (3) respectively, for adopting
Collect the vibration signal of magnetic circuit iron core (1) and absorbing mass (3)；Magnet exciting coil (5) connects with dc source (14) output end, uses
In providing magnetic rheology elastic body (2) adjustable stabilizing magnetic field, and then the real-time regulation of vibration damping rigidity is realized, consume vibrational energy
Amount.
The described shock absorber based on magnetic converting technique, it is characterised in that：Fixed seat (9) is vibration control object, is belonged to
A part of structure of flexible mechanical arm, engine system, for installing Damping modules, its structure is determined by actual conditions.
The described shock absorber based on magnetic converting technique, it is characterised in that：The absorbing mass (3) is used as shock absorber
Oscillator vibrates in the presence of external excitation, and the magnetic circuit iron core (1) and the magnet exciting coil (5) are used as and determine the same fixed seat of quality
(9) vibrated together with external excitation.
The described shock absorber based on magnetic converting technique, it is characterised in that：The absorbing mass (3) is dumbbell shape knot
Structure, its lower end weight is more than upper end weight, and it has certain self- steering effect under gravity.
The described shock absorber based on magnetic converting technique, it is characterised in that：The magnet exciting coil (5) by enamel-cover copper conductor around
System, as current load source in electromagnetic field, can adjust the additional electromagnetic field intensity on magnetic rheology elastic body (2).
The described shock absorber based on magnetic converting technique, it is characterised in that：Magnetic isolation plate (7) the material selection aluminium alloy
2A12, belongs to non-magnet material, can separate the bottom magnetic field of magnetic circuit iron core (1).
The advantage of the present invention compared with prior art is：
(1) effectiveness in vibration suppression substantially, can be directed to the principal oscillation frequency of vibration control object, regulation magnetic rheology elastic body two ends
Magnetic field intensity, change vibration absorber intrinsic frequency, realize that the vibrational energy between vibration control object and vibration absorber is moved
Move, vibration absorber is fully absorbed the vibrational energy of intended vibratory system, cut down the significantly vibration of vibration control object；
(2) damping frequency band is roomy, can adjust applied field strengths and change magnetic rheology elastic body rigidity, realizes that vibration damping is filled
Put the requirement for the vibration frequency matching that vibration control object is met in wider scope；
(3) consuming little energy, only need to provide fundamental voltage, the electric current of vibration absorber normal work, without providing energy
Vibrational energy is offset, can be carried in flexible mechanical arm, engine system in the range of the use of the energy；
(4) it is simple in construction, fast response time, it is possible to achieve continuous control；
(5) easy modularization, can be applied in combination vibration absorber according to the damping requirements of different frequency range.
Brief description of the drawings
Fig. 1 is the shock absorber schematic diagram based on magnetic converting technique of the invention；
Fig. 2 is the positive direction view of Damping modules in the present invention；
Fig. 3 is magnetic circuit core structure schematic diagram in the present invention；
Fig. 4 is magnetic circuit iron core in the present invention and the structure decomposition figure of fixed seat connection；
Fig. 5 is the operation principle schematic diagram of the shock absorber based on magnetic converting technique in the present invention.
Have in figure above：Magnetic circuit iron core (1), magnetic rheology elastic body (2), absorbing mass (3), coil baffle plate (4), encourage
Magnetic coil (5), train wheel bridge (6), every magnetic patch (7), lower plate (8), pedestal (9), stretch out plate (10), acceleration transducer (11),
Data collecting system (12), control main frame (13), dc source (14).
Embodiment
Below in conjunction with the accompanying drawings and instantiation is described in further detail to the present invention, but the implementation of the present invention is not limited to
This.
In the present invention, it is to be understood that, term " on ", " under ", "left", "right", " centre ", " vertical ", " level ",
The position relation such as " top ", " bottom ", " interior ", " outer " is based on position relation shown in the drawings, the only letter for ease of the description present invention
Change description, rather than indicate or imply position relation and construction that signified device or original paper must have, it is impossible to be interpreted as to this
The limitation of invention protection domain.
As shown in figure 1, a kind of shock absorber based on magnetic converting technique, it is characterised in that including fixed seat 9, Damping modules,
Control module, wherein fixed seat 9 are vibration control object, belong to flexible mechanical arm, a part of structure of engine system,.
Damping modules are main by magnetic circuit iron core 1, magnetic rheology elastic body 2, absorbing mass 3, coil baffle plate 4, magnet exciting coil
5th, train wheel bridge 6, constitute every magnetic patch 7, lower plate 8.
Magnetic circuit iron core 1 can use a variety of suitable shape and structures；In the present embodiment, magnetic circuit iron core 1 preferably is Back Word
A 10mmm breach is provided with the middle of type structure, Back Word type upper end, as two clearance between poles of magnetic circuit iron core 1, Back Word type lower end is carried
Two stretching plates 10；The material selection electrical pure iron DT4C of magnetic circuit iron core 1, with good magnetic conductivity, detail such as Fig. 3 institutes
Show.
Left and right two sides passes through adhesive and the magnetorheological bullet of the thick sheets of a 4mm respectively in the clearance gaps of magnetic circuit iron core 1
The property outer surface of body 2 is closely coupled；It is preferred that absorbing mass 3 be dumbbell shape structure, dumbbell shape structure stage casing is placed in two
In the middle of magnetic rheology elastic body 2, the outer surface of absorbing mass 3 is bonded into one by adhesive with two magnetic rheology elastic bodies 2；It is excellent
The magnet exciting coil 5 of choosing selects diameter 1.2mm enamel covered wire, and sets the magnet exciting coil number of turn to be 1320 circles, energization DC current
For 5A, two groups of magnet exciting coils 5 are respectively wound around on the left and right sides cuboid of magnetic circuit iron core 1, and spacing using coil baffle plate 4,
Detail is as shown in Figure 2.
Further, the material selection copper of the absorbing mass 3, its dumbbell shape structure lower end weight is more than upper end weight
Amount, under gravity its there is certain self- steering effect, it is to avoid use guiding mechanism, reduce mechanical complications, its
Two planes are the mounting surface of acceleration transducer 11 up and down, to gather vibration signal.
Further, the magnetic rheology elastic body 2 is by 704 silica gel as matrix, the carbonyl iron dust as magnetic-particle
And constituted as a small amount of self-control silicone oil of lubricant according to certain mass ratio.
It can be used every magnetic patch 7, train wheel bridge 6 and lower plate 8 in a variety of suitable shape and structures, the present embodiment, preferably
It is concave character type every magnetic patch 7, train wheel bridge 6 and the section of lower plate 8, and is machined with fourThrough hole；It is arranged on every magnetic patch 7
Two of magnetic circuit iron core 1 are stretched out between plate 10 and fixed seat 9, are coordinated every the concave surface of magnetic patch 7 and are positioned in fixed seat 9；Magnetic circuit iron
Two of core 1 stretch out plates 10 and are cooperated by train wheel bridge 6 and lower plate 8 and are positioned in fixed seat 9, and by eight sets of M4 ×
20 bolts, M4 nuts are clamped.It is described every magnetic patch 7, train wheel bridge 6 and the material selection aluminium alloy 2A12 of lower plate 8, belong to non-magnetic material
Material, the flow direction for limiting the magnetic line of force makes its overwhelming majority to be passed through from magnetic rheology elastic body 2, detail such as Fig. 4 institutes
Show.
Control loop is main by acceleration transducer 11, data collecting system 12, control main frame 13,14 groups of dc source
Into；It is preferred that acceleration transducer 11, two acceleration transducers 11 are bonded on magnetic circuit iron core 1 and absorbing mass 3 respectively,
Vibration signal for measuring magnetic circuit iron core 1 and absorbing mass 3；Magnet exciting coil 5 connects with the output end of dc source 14, is used for
Adjustable stabilizing magnetic field is provided to magnetic rheology elastic body 2.
In the present embodiment, the Damping modules of the shock absorber based on magnetic converting technique operate mainly in vertical direction, in order to keep away
Exempt from magnetic rheology elastic body 2 because oscillator quality is excessive, cause its detrusion excessive and destroy, in the shock absorber course of work,
Absorbing mass 3 vibrates as the oscillator of shock absorber in the presence of external excitation, the magnetic circuit iron core 1 and the magnet exciting coil 5
Vibrated together with external excitation with fixed seat 9 as the quality of determining of shock absorber.
The operation principle of the shock absorber based on magnetic converting technique of the present invention is as follows,
(1) shock absorber is assembled according to above-mentioned embodiment, Damping modules is arranged in fixed seat 9 by bolt, nut,
And ensure the correct installation of acceleration transducer 11；
(2) the intrinsic frequency scope of fixed seat 9 is determined, starts all hardware equipment and vibrates fixed seat 9, acceleration is passed
The vibration signal of the collection magnetic circuit of sensor 11 iron core 1 and absorbing mass 3；
(3) data collecting system 12 obtains the signal of acceleration transducer 11, and incoming control main frame 13；
(4) according to the peak detection of modal analysis method in Theory of Vibration, control main frame 13 is carried out to inputted vibration signal
Analysis is calculated, and then obtains the intrinsic frequency of shock absorber；
(5) according to the vibration control method of setting, control main frame 13 adjusts the output end voltage and electric current of dc source 14,
And then adjust the voltage and current at the two ends of magnet exciting coil 5；
(6) electric current inside magnetic circuit iron core 1, magnetic rheology elastic body 2, the formation magnetic loop of absorbing mass 3, magnet exciting coil 5
Change, the modulus of shearing of magnetic rheology elastic body 2 will change and change with externally-applied magnetic field, so that the intrinsic frequency of shock absorber changes；
(7) when fixed seat 9 is vibrated in vibration control object, absorbing mass 3 vibrates, and absorbing mass 3 drives magnetic current
Become elastomer 2 and occur detrusion；
(8) absorbing mass 3 and magnetic rheology elastic body 2 be in vibration processes, and vibrational energy is from vibration control object migration
Into shock absorber, and by the structural damping rapid dispersion of magnetic rheology elastic body 2, realize and absorbing is carried out to vibration control object and is subtracted
The function of shaking；
(9) process of repeat step (1)~step (8), shock absorber can be changed by changing electric current in magnet exciting coil 5
Intrinsic frequency, maintains vibration control object to carry out the frequency requirement of vibration damping, and meet vibration control object broadband vibration damping in real time
Functional requirement.
It is described above, it is only this shock absorber specific embodiment based on magnetic converting technique, is for the ease of the art
Technical staff the invention discloses technical scope in understand and apply the invention, but protection scope of the present invention is not limited to
This, makes the equivalent structure change for needing not move through creative work on the basis of the technical program or various replace all exists
Within protection scope of the present invention.
Claims (7)
1. a kind of shock absorber based on magnetic converting technique, it is characterised in that including fixed seat (9), Damping modules, control module,
Wherein：
The Damping modules include magnetic circuit iron core (1), magnetic rheology elastic body (2), absorbing mass (3), coil baffle plate (4), encouraged
Magnetic coil (5), train wheel bridge (6), every magnetic patch (7), lower plate (8)；The magnetic circuit iron core (1) is on Back Word type, Back Word type section
A breach is provided with the middle of end, Back Word type section lower end there are two to stretch out plate (10)；The two of magnetic circuit iron core (1) clearance gaps
A sheet of magnetic rheology elastic body (2) is respectively fixedly connected on individual medial surface, the absorbing mass (3) is placed in two magnetorheological bullets
Property body (2) in the middle of, and it is integral to be connected；The both sides cuboid of the magnetic circuit iron core (1) is wound with a magnet exciting coil (5) respectively,
And it is spacing using coil baffle plate (4)；Be arranged on magnetic circuit iron core (1) every magnetic patch (7) described in two two stretch out plate (10) and solid
Between reservation (9)；The magnetic circuit iron core (1) is cooperated by train wheel bridge (6) and lower plate (8) and is positioned in fixed seat (9),
And clamped by bolt, nut；
The control module includes acceleration transducer (11), data collecting system (12), control main frame (13), dc source
(14)；Two acceleration transducers (11) are bonded on magnetic circuit iron core (1) and absorbing mass (3) respectively, for gathering
The vibration signal of magnetic circuit iron core (1) and absorbing mass (3)；Magnet exciting coil (5) connects with dc source (14) output end, is used for
Adjustable stabilizing magnetic field is provided to magnetic rheology elastic body (2), and then realizes the real-time regulation of magnetic rheology elastic body (2) rigidity.
2. the shock absorber according to claim 1 based on magnetic converting technique, it is characterised in that：The fixed seat (9) is to shake
Dynamic control object, belongs to flexible mechanical arm, a part of structure of engine system, for installing Damping modules, its structure is by reality
Border situation is determined.
3. the shock absorber according to claim 1 based on magnetic converting technique, it is characterised in that：The absorbing mass (3)
Vibrated as the oscillator of shock absorber in the presence of external excitation, the magnetic circuit iron core (1) and the magnet exciting coil (5) are used as and determine matter
Same fixed seat (9) is measured to vibrate with external excitation together.
4. the shock absorber according to claim 1 based on magnetic converting technique, it is characterised in that：The absorbing mass (3)
For dumbbell shape structure, its lower end weight is more than upper end weight, and it has certain self- steering effect under gravity.
5. the shock absorber according to claim 1 based on magnetic converting technique, it is characterised in that：The magnet exciting coil (5) by
Enamel-cover copper conductor coiling, as current load source in electromagnetic field and to adjust the additional electromagnetic field on magnetic rheology elastic body (2) strong
Degree.
6. the shock absorber according to claim 1 based on magnetic converting technique, it is characterised in that：Magnetic circuit iron core (1) material
Material selects electrical pure iron DT4C, with good magnetic conductivity.
7. the shock absorber according to claim 1 based on magnetic converting technique, it is characterised in that：Magnetic isolation plate (7) material
From aluminium alloy 2A12, belong to non-magnet material, the bottom magnetic field for separating magnetic circuit iron core (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710500897.8A CN107165973A (en) | 2017-06-27 | 2017-06-27 | A kind of shock absorber based on magnetic converting technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710500897.8A CN107165973A (en) | 2017-06-27 | 2017-06-27 | A kind of shock absorber based on magnetic converting technique |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109397890A (en) * | 2018-12-11 | 2019-03-01 | 海宁市新宇光能科技有限公司 | A kind of light bulb topping printing equipment is set |
| CN110439959A (en) * | 2019-07-30 | 2019-11-12 | 珠海格力电器股份有限公司 | Robot and vibration suppression method thereof |
| CN110761430A (en) * | 2019-10-28 | 2020-02-07 | 武汉理工大学 | Coupling beam damper based on magnetorheological elastomer material |
| CN114251250A (en) * | 2021-12-02 | 2022-03-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Damping ring, compressor assembly and air conditioner |
| CN117167434A (en) * | 2023-11-03 | 2023-12-05 | 哈尔滨工程大学 | Multi-frequency adjustable-frequency dynamic vibration absorber |
| CN117927603A (en) * | 2023-12-21 | 2024-04-26 | 珠海华成电力设计院股份有限公司 | Intelligent induction vibration reduction method of photovoltaic flexible system |
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| CN1948781A (en) * | 2005-10-15 | 2007-04-18 | 中国科学技术大学 | Magnetic flowing deformation elastomer frequency shift type attenuator and control method |
| KR20080047738A (en) * | 2006-11-27 | 2008-05-30 | 현대자동차주식회사 | Low electric consumer elastic force control typed mr fluid endine mount |
| CN103029139A (en) * | 2013-01-15 | 2013-04-10 | 北京航空航天大学 | Flexible mechanical arm vibration reduction device and method based on magneto-rheological technology |
| CN106979273A (en) * | 2017-04-20 | 2017-07-25 | 中国人民解放军63956部队 | A kind of engine snubber based on magnetic converting technique |
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| CN1948781A (en) * | 2005-10-15 | 2007-04-18 | 中国科学技术大学 | Magnetic flowing deformation elastomer frequency shift type attenuator and control method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109397890A (en) * | 2018-12-11 | 2019-03-01 | 海宁市新宇光能科技有限公司 | A kind of light bulb topping printing equipment is set |
| CN110439959A (en) * | 2019-07-30 | 2019-11-12 | 珠海格力电器股份有限公司 | Robot and vibration suppression method thereof |
| CN110761430A (en) * | 2019-10-28 | 2020-02-07 | 武汉理工大学 | Coupling beam damper based on magnetorheological elastomer material |
| CN110761430B (en) * | 2019-10-28 | 2020-11-24 | 武汉理工大学 | Coupling beam damper based on magnetorheological elastomer material |
| CN114251250A (en) * | 2021-12-02 | 2022-03-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Damping ring, compressor assembly and air conditioner |
| CN114251250B (en) * | 2021-12-02 | 2023-10-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Vibration damping ring, compressor assembly and air conditioner |
| CN117167434A (en) * | 2023-11-03 | 2023-12-05 | 哈尔滨工程大学 | Multi-frequency adjustable-frequency dynamic vibration absorber |
| CN117927603A (en) * | 2023-12-21 | 2024-04-26 | 珠海华成电力设计院股份有限公司 | Intelligent induction vibration reduction method of photovoltaic flexible system |
| CN117927603B (en) * | 2023-12-21 | 2024-07-05 | 珠海华成电力设计院股份有限公司 | Intelligent induction vibration reduction method of photovoltaic flexible system |
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Application publication date: 20170915 |