CN108894347B - A kind of magnetorheological intelligent tuning vibration absorber of half active - Google Patents
A kind of magnetorheological intelligent tuning vibration absorber of half active Download PDFInfo
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- CN108894347B CN108894347B CN201810699383.4A CN201810699383A CN108894347B CN 108894347 B CN108894347 B CN 108894347B CN 201810699383 A CN201810699383 A CN 201810699383A CN 108894347 B CN108894347 B CN 108894347B
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- vibration absorber
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention discloses a kind of magnetorheological intelligent tuning vibration absorbers of half active, including a cylinder, a mass block is equipped at the center of cylinder, a working cylinder is respectively provided on the intracorporal front, rear, left and right four direction of cylinder, the mass block is connected by rigid rod with forward and backward working cylinder or left and right working cylinder；Each working cylinder is divided into three independent cavitys by partition, and wherein middle chamber is damping cavity, and both sides cavity is other chamber；In the intracavitary spring for being equipped with connection working cylinder and partition in the side, magnetorheological fluid is filled in the damper housing, and a piston is equipped in damping cavity, the both ends of each piston respectively connect a piston rod, each piston rod is connected after passing through corresponding other chamber with a sliding block, and two adjacent pistons bars of operated adjacent cylinder connect the same sliding block；The sliding block installation is on the slide rail；Hot-wire coil is wound on the piston, the hot-wire coil is connect with induction controller.
Description
Technical field
It is main the present invention relates to building structure field, the specifically a kind of magnetorheological intelligent tuning vibration absorber of half active
To be applied to vibration damping control greatly across, dependency structures such as towering.
Background technique
With the development of the social economy, architecture structure form gradually tends to diversification and complicates, to wind and rain or earthquake disaster
Harmful sensitivity is also increasingly significant.Under wind load or geological process, building structure generates strong vibratory response, structure structure
Part occurs fatigue and different degrees of damage occurs, once failure will appear continuity damage, causes building structure to occur serious
Phenomenon of partly or wholly collapsing.Vibration control technology is the effective ways for reducing structural vibration, defeated according to external energy at present
Passive control, semi- active control and active control can be divided by entering degree.
Passive control is to study and tend to mature structure control mode earliest, due to simple structure, is not necessarily to extra power
There is significant effectiveness in vibration suppression while input, be widely applied in practice in engineering.But its control effect depends on
Whether vibration frequency mutually tunes with main structure, poor to the adaptability of external environment.Active control is led to during structural vibration
It crosses actuator and certain influence is applied on main structure, achieve the purpose that effectively reduce structural vibration.But its manufacture is complicated, cost is high
It is expensive.In comparison, semi- active control only needs to input a small amount of energy and can be realized and effectiveness in vibration suppression similar in active control, structure
It makes simply, cost economic is with a wide range of applications.
Summary of the invention
It is an object of the present invention to provide a kind of magnetorheological intelligent tuning vibration absorbers of half active, it is intended to reduce skyscraper or height
Horizontal vibration response of the structure under wind load and geological process is alarmmed, achievees the purpose that passive energy dissipation.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of half actively magnetorheological intelligent tuning vibration absorber, an including cylinder is equipped with a matter at the center of cylinder
Gauge block, is respectively provided with a working cylinder on the intracorporal front, rear, left and right four direction of cylinder, and the mass block passes through rigid
Property bar is connected with forward and backward working cylinder or left and right working cylinder；Each working cylinder is divided into three independent chambers by partition
Body, wherein middle chamber is damping cavity, and both sides cavity is other chamber；In the intracavitary bullet for being equipped with connection working cylinder and partition in the side
Spring is filled with magnetorheological fluid in the damper housing, and a piston is equipped in damping cavity, and the both ends of each piston are each
A piston rod is connected, each piston rod is connected after passing through corresponding other chamber with a sliding block, and two phases of operated adjacent cylinder
Adjacent piston rod connects the same sliding block；The sliding block installation is on the slide rail；Hot-wire coil, institute are wound on the piston
The hot-wire coil stated is connect with induction controller.
Further technical solution are as follows: two working cylinders being connected with mass block are reserved with through-hole, In on two end faces
It is equipped with Limit Bearing in the through-hole, allows working cylinder along corresponding piston rod movement；Two works in another direction
Make cylinder to be fixed on the bottom plate of cylinder by link block.
Further technical solution are as follows: the partition is fixed on the piston rod；The gap of partition and the work inside wall of cylinder is logical
Rubber seal rings for seal is crossed, prevents magnetorheological fluid from overflowing in flow process.
Further technical solution are as follows: the mass block bottom is pre- on the supporting plate by a pallet support
There are multiple grooves, mass ball are placed in each groove, mass block is placed in metal ball can be with smooth movement.
Further technical solution are as follows: the spring is by marmem (Shape memory alloy, abbreviation
SMA it) is made, both ends of the spring is separately fixed on partition and working cylinder.
Further technical solution are as follows: the partition is fixed on the piston rod；The gap of partition and the work inside wall of cylinder is logical
Rubber seal rings for seal is crossed, prevents magnetorheological fluid from overflowing in flow process.
Further technical solution are as follows: the cylinder is made of stainless steel material, to interior arrangement under wind and rain environment
It plays a protective role.
Further technical solution are as follows: the cylinder is fixedly mounted on structural vibration sensitive position.
Further technical solution are as follows: the piston diameter is less than damping cavity internal diameter, so that there are magnetic in damping cavity
The flow channel of rheology liquid.
Further technical solution are as follows: the length of every track should be greater than the damping stroke of damping cavity.Track uses flute profile
Section, the interior sliding block that is equipped with of slot can be moved along track, avoid high vibration that sliding block is caused to derail；Track is fixed on by link block
On the bottom plate of cylinder.
Further technical solution are as follows: the slider bottom reserves groove, is equipped with spin in groove, avoids sliding block in-orbit
Friction is generated when road is mobile.
Further technical solution are as follows: hot-wire coil is connected in forward and backward working cylinder, is located in left and right working cylinder
Hot-wire coil is connected, and the hot-wire coil in forward and backward working cylinder is in parallel with the hot-wire coil in left and right working cylinder.
Further technical solution are as follows: induction controller is by external power supply, controller, acceleration induction device I, accelerates
Spend the control circuit of inductor II, vibration switch I, vibration switch II composition；It is all the way wherein: the vibration switch I, accelerates
Spend two hot-wire coils series connection in inductor I and left and right working cylinder；Another way is: the vibration switch II, acceleration sense
Two hot-wire coils in device II and forward and backward working cylinder are answered to connect；It connects after two-way circuit in parallel with controller, external power supply.
Further technical solution are as follows: the acceleration induction device is unidirectional induction, and is placed on controlled structures.
Working principle of the present invention is as follows:
Below by taking mass block is connected by rigid rod with left and right working cylinder as an example；Inner barrel horizontal direction can be divided into X to
And Y-direction；Direction where left and right working cylinder is X-direction, and the direction where forward and backward working cylinder is Y-direction；The damper is consolidated
Due to the top of skyscraper or tall and slender structure, under earthquake or wind action, vibratory response occurs for structure.Work as structure level
When Y-direction is vibrated, the movement of Y-direction occurs in metal ball due to inertia for mass block, drives left and right working cylinder by rigid rod
It is moved together along its corresponding piston rod.When left and right working cylinder and fixed piston on the piston rod generate relative motion, constantly
The intracavitary magnetorheological fluid of squeezed air-damping.Vibration switch I is opened at this time, and acceleration transducer I receives the acceleration signal of Y-direction simultaneously
It passes to controller to be handled, controller adjusts the electric current in the hot-wire coil of left and right working cylinder according to the size of acceleration
Size；Hot-wire coil after powered up, changes the magnetic field strength in damping cavity, and the mobility and viscosity of magnetorheological fluid respond
Variation improves output damping force, and then realizes the vibratory response of intelligent control Y-direction.
When the vibration of structure level X-direction, mass block, rigid rod and left and right working cylinder are as a whole along track water
Translation is dynamic, and slide block movement drives piston rod, piston and forward and backward working cylinder that relative motion occurs, and magnetorheological fluid, which is squeezed, to be hindered
Buddhist nun is flowed in channel.Vibration switch II is opened at this time, and controller receives the signal of acceleration transducer II and controls left and right work
Size of current in the hot-wire coil of cylinder, it is special come the flowing for changing magnetorheological fluid by adjusting the magnetic field strength in damp channel
Property, reasonable damping force is provided and then realizes the vibratory response of intelligent control X-direction.
After structural vibration, vibration switch I, II is closed, and hot-wire coil no current passes through, and magnetorheological fluid is restored to liquid
Body state, other intracavitary SMA spring is since deformation provides restoring force, so that reset condition is presented in vibration absorber.
The beneficial effects of the present invention are:
(1) present invention proposes a kind of resistance based on semi- active control theory for the defect of passive control and active control
Buddhist nun's device.According to excitation load form and structural response state, the flow characteristics for changing magnetorheological fluid to adjust damper in real time
Damping and rigidity so that damper has more stable working performance in wider frequency domain, to reach good vibration damping effect
Fruit.
(2) present invention utilizes the instantaneous rheological behavior of magnetorheological fluid, provides the damping force of moment change to damper, significantly
Improve the Time Delay of general semi-automatic control device.And the present invention expands MR damper and SMA spring assembly
While damper stroke, the reset condition that damper can be made to restore avoids work when influencing application damper next time
Make performance.
(3) present invention inductive control circuit in horizontal both direction is parallel connection, unidirectional two working cylinders series connection
Work, two groups of working cylinder parallel operations of different directions are conducive to the vibration absorber and provide enough damping forces, have stable
Effectiveness in vibration suppression.
(4) the vibration absorber simple structure, it is easy to maintain, it is applicable to that towering, figure is complicated and safety requirements is high builds
Building structure guarantees that structure meets required safety and durability.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is a kind of top view of the magnetorheological intelligent tuning vibration absorber of half active；
Fig. 2 is a kind of A-A sectional view of the magnetorheological intelligent tuning vibration absorber of half active；
Fig. 3 is a kind of B-B sectional view of the magnetorheological intelligent tuning vibration absorber of half active；
Fig. 4 is a kind of C-C sectional view of the magnetorheological intelligent tuning vibration absorber of half active；
Fig. 5 is a kind of control circuit schematic diagram of the magnetorheological intelligent tuning vibration absorber of half active；
In figure: 1 cylinder, 2 mass blocks, 3 rigid rods, 4a working cylinder I, 4b working cylinder II, 5 side chambers, 6 damping cavities, 7a piston
Bar I, 7b piston rod II, 8 sliding blocks, 9 tracks, 10 partitions, 11 pistons,
12SMA spring, 13a hot-wire coil I, 13b hot-wire coil II, 14 magnetorheological fluids, 15 sealing rings, 16 Limit Bearings,
17 link blocks, 18 supporting plates, 19 metal balls, 20 external power supplies, 21 controllers, 22a vibration switch I, 22b vibration switch II, 23a adds
Velocity sensor I, 23b acceleration transducer II.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination；
In order to facilitate narration, if there is "upper", "lower", " left side " " right side " printed words in the present invention, only expression and attached drawing itself
Upper and lower, left and right direction it is consistent, not to structure rise restriction effect, it is only for convenient for description the present invention and simplification retouch
It states, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, and be constructed and operated in a specific orientation,
Therefore it is not considered as limiting the invention.
As background technique is introduced, passive control is to study and tend to mature structure control earliest in the prior art
Mode, since simple structure is obtained without having significant effectiveness in vibration suppression while extra power input in engineering in practice
It is widely applied.But its control effect depends on whether vibration frequency mutually tunes with main structure, to the adaptability of external environment
Difference.Active control applies certain influence to main structure by actuator during structural vibration, reaches and effectively reduces structure vibration
Dynamic purpose.But its manufacture is complicated, involves great expense.In comparison, semi- active control only needs to input a small amount of energy
Realization is with a wide range of applications with effectiveness in vibration suppression similar in active control, simple structure, cost economic.For above existing
Shape, present invention combination semi- active control technical know-how, by MR damper and marmem (Shape memory
Alloy, abbreviation SMA) this intellectual material associated working of spring, propose a kind of On A Retrofitted Damper.The flowing of magnetorheological fluid is special
Property it is very sensitive to magnetic field strength, under changing magnetic field intensity have different viscosity, can be mentioned according to external drive situation
For required damping force.After structural vibration, using the super elastic characteristics of SMA, the vibration absorber after work is restored to
Initial conditions, the final purpose for realizing half active effectively control structure vibration；The present invention includes a cylinder, at the center of cylinder
Equipped with a mass block, a working cylinder, the matter are respectively provided on the intracorporal front, rear, left and right four direction of cylinder
Gauge block is connected by rigid rod with forward and backward working cylinder or left and right working cylinder；The partition point that each working cylinder is built
At three independent cavitys, wherein middle chamber is damping cavity, and both sides cavity is other chamber；On the side, intracavitary be equipped with connects work
The spring of cylinder and partition is filled with magnetorheological fluid in the damper housing, and a piston is equipped in damping cavity, each
The both ends of piston respectively connect a piston rod, and each piston rod is connected after passing through corresponding other chamber with a sliding block, and adjacent work
Two adjacent pistons bars for making cylinder connect the same sliding block；The sliding block installation is on the slide rail；It is also twined on the piston
It is wound with hot-wire coil, the hot-wire coil is connect with induction controller.
In a kind of typical embodiment of the application, as shown in Figure 1, defining the direction where the left and right cylinder body in Fig. 1
It is Y direction for the direction where X-direction, front and back cylinder body；
The present invention includes 1, mass block 2 of a cylinder and four working cylinders；Supporting plate 18 is fixed on the bottom plate of cylinder 1
On, groove is reserved at the top of supporting plate 18 and is equipped with metal ball 19, and mass block 2 is placed in metal ball 19 to be slid with horizon light and be moved.
2 two sides of mass block are equipped with rigid rod 3, and the other end of rigid rod 3 is fixed on I 4a of working cylinder.I 4a of working cylinder two
End face reserved through hole is simultaneously installed with I 7a of piston rod, through hole be equipped with Limit Bearing 16, I 4a of working cylinder can on I 7a of piston rod edge
Axis is mobile.I both ends 7a of piston rod are fixed on the sliding block 8 in track 9.It is fixed with partition 10 on I 7a of piston rod, by working cylinder
I 4a is separated into two other chambers 5 and a damping cavity 6.It is equipped with SMA spring 12 in other chamber 5,12 both ends of SMA spring are connected in work respectively
Make on I 4a of cylinder and partition 10.The part I 7a of piston rod in damping cavity 6 is fixed with piston 11, winding in the groove of 11 two sides of piston
There are I 13a of hot-wire coil, I 13a of hot-wire coil to form sense of connecting with external power supply 20, controller 21 and I 23a of acceleration transducer
Answer control circuit.When main structure generates the vibration of horizontal Y-direction under external drive, mass block 2 is since inertia is in metal ball
It is moved on 19, drives I 4a of working cylinder to move together along I 7a of piston rod by rigid rod 3.I 4a of working chamber and it is fixed on piston rod I
Magnetorheological fluid 14 when 11 relative motion of piston on 7a, in continuous squeezed air-damping chamber 6.I 22a of vibration switch is opened at this time, is added
I 23a of velocity sensor receives signal and passes to controller 21, and controller 21 adjusts hot-wire coil I according to the size of acceleration
The size of current of 13a.After I 13a of hot-wire coil is powered, the magnetic field strength in damping cavity 6, the mobility of magnetorheological fluid 14 are changed
Response variation occurs with viscosity, improves output damping force, and then realize the vibratory response of intelligent control Y-direction.
The both ends of II 7b of piston rod are fixed on along two sliding blocks 8 in 9 direction of track, II 7b of piston rod is equipped with working cylinder II
4b.Partition 10 is fixed on the inner wall of II 4b of working cylinder, II 4b of working cylinder is separated into two other chambers 5 and a damping by partition 10
Chamber 6.It is equipped with SMA spring 12 in other chamber 5, both ends are separately fixed on II 4b of working chamber and partition 10.Piston rod in damping cavity 6
The part II 7b is fixed with piston 11, is wound with II 13b of hot-wire coil in the groove of 11 two sides of piston, II 13b of hot-wire coil and outer
Portion's power supply 20, controller 21 and II 23b of acceleration transducer form series inductance control circuit.When main structure is in external drive
When lower generation horizontal X direction vibrates, mass block 2, rigid rod 3 and I 4a of working cylinder are moved horizontally along track 9 as a whole,
Drive II 7b of piston rod and piston 11 and II 7b of working cylinder that relative motion occurs, magnetorheological fluid 14 is squeezed in damp channel
Flowing.II 22b of vibration switch is opened at this time, and controller 21 receives the signal of II 23b of acceleration transducer and controls hot-wire coil
Size of current in II 13b changes the flow behavior of magnetorheological fluid 14 by adjusting the magnetic field strength in damp channel, provides
Reasonable damping force, and then realize the vibratory response of intelligent control X-direction.
After vibration, I 22a of vibration switch, II 22b are closed, and I 13a of hot-wire coil, II 13b no current pass through, magnetic current
Become liquid 14 and be restored to liquid condition, the SMA spring 12 in other chamber 5 is since deformation provides restoring force, so that damper presentation is original
State guarantees that the vibration absorber has good working performance in application next time.
Spring 12 is made by marmem.
Track 9 is arranged in the both ends of I 7a of piston rod in X direction, and the length of every track 9 should be greater than the resistance of II 4b of damping cavity
Buddhist nun's stroke.Track 9 uses channel-section, is equipped with sliding block 8 in slot and moves along track 9, avoids high vibration that sliding block 8 is caused to derail；
Track 9 and II 4b of working cylinder are fixed on 1 bottom plate of cylinder by link block 17.
Groove is reserved in 8 bottom of sliding block, is equipped with spin in groove, sliding block 8 is avoided to generate friction when track 9 is mobile.
I 13a of hot-wire coil connects in I 4a of working cylinder of horizontal Y-direction, hot-wire coil in II 4b of horizontal X direction working cylinder
II 13b connects, and the hot-wire coil in II 4b of I 4a of working cylinder and working cylinder is in parallel.
As shown in Figure 5: induction controller is by external power supply 20, controller 21, I 22a of vibration switch, vibration switch II
22b, I 23a of acceleration transducer, the control circuit of II 23b of acceleration transducer composition；Be all the way wherein: the vibration is opened
Close I22a, acceleration induction device I23a and two hot-wire coils series connection in left and right working cylinder；Another way is: described
Two hot-wire coils series connection in vibration switch II22b, acceleration induction device II23b and forward and backward working cylinder；Two-way circuit in parallel
It connects afterwards with controller, external power supply.
I 23a of acceleration induction device, II 23b are unidirectional induction, and are placed on controlled structures.
The vibration absorber acts on the special flow behavior of lower magnetorheological fluid using variation magnetic field, can be according to structure in difference
The different Vibration Conditions generated under excitation load adjust the damping force of damper offer in real time, so that damper is in wider frequency
Stable control effect is kept within the scope of domain.
For the vibration absorber MR damper in conjunction with SMA spring, SMA spring provides additional damping to MR damper
The vibratory response of power inhibition structure.After structural vibration, SMA is presented to original as main resetter, by vibration absorber
Beginning state.Meanwhile damping stroke is expanded, being conducive to the vibration absorber still has stable vibration damping effect when Oscillation Amplitude is larger
Fruit.
The vibration absorber is mounted on the position that flutter failure easily occurs for major structure of construction, can effectively inhibit building structure
Vibratory response under earthquake or wind action guarantees safety and the durability of structure.Meanwhile the device simple structure,
It is easy to process, and cost performance is high, is particularly suitable for skyscraper or tall and slender structure.
The embodiment above of this patent is not limiting the scope of the present invention, and the embodiment of this patent is unlimited
In this, all this kind is not being departed from according to the above content of this patent according to the ordinary technical knowledge and customary means of this field
Under the premise of the above-mentioned basic fundamental thought of this patent, the modifications of other diversified forms that this patent above structure is made, replacement or
Change, should all fall within the protection scope of this patent.
Claims (10)
1. a kind of half actively magnetorheological intelligent tuning vibration absorber, an including cylinder is equipped with a quality at the center of cylinder
Block is respectively provided with a working cylinder on the intracorporal front, rear, left and right four direction of cylinder, and the mass block passes through rigidity
Bar is connected with forward and backward working cylinder or left and right working cylinder；Each working cylinder is divided into three independent cavitys by partition,
Wherein middle chamber is damping cavity, and both sides cavity is other chamber；In the intracavitary spring for being equipped with connection working cylinder and partition in the side, In
It is filled with magnetorheological fluid in the damper housing, and is equipped with a piston in damping cavity, the both ends of each piston respectively connect
One piston rod, each piston rod is connected after passing through corresponding other chamber with a sliding block, and two adjacent work of operated adjacent cylinder
Stopper rod connects the same sliding block；The sliding block installation is on the slide rail；Hot-wire coil is wound on the piston, it is described
Hot-wire coil is connect with induction controller.
2. a kind of magnetorheological intelligent tuning vibration absorber of half active as described in claim 1, which is characterized in that in the matter
Gauge block bottom is reserved with multiple grooves on the supporting plate, is placed with quality in each groove by a pallet support
Ball, mass block is placed in metal ball can be with smooth movement.
3. a kind of magnetorheological intelligent tuning vibration absorber of half active as described in claim 1, which is characterized in that with mass block phase
Two working cylinders even are reserved with through-hole on end face, Limit Bearing are equipped in the through-hole, so that working cylinder can be along right
The piston rod movement answered；Two working cylinders in another direction are fixed on the bottom plate of cylinder by link block.
4. a kind of magnetorheological intelligent tuning vibration absorber of half active as described in claim 1, which is characterized in that the partition
It fixes on the piston rod；The gap of partition and the work inside wall of cylinder prevents magnetorheological fluid from flowing over by rubber seal rings for seal
It is overflowed in journey.
5. a kind of magnetorheological intelligent tuning vibration absorber of half active as described in claim 1, which is characterized in that the spring
It is made by marmem, both ends of the spring is separately fixed on partition and working cylinder.
6. a kind of magnetorheological intelligent tuning vibration absorber of half active as described in claim 1, which is characterized in that the induction
The control circuit that control device is made of external power supply, controller, acceleration induction device and vibration switch；
Induction controller is opened by power supply, controller, acceleration induction device I, acceleration induction device II, vibration switch I, vibration
Close the control circuit of II composition；It is all the way wherein: vibration switch I, the acceleration induction device I and is located at left and right working cylinder
Interior two hot-wire coils series connection；Another way is: in vibration switch II, the acceleration induction device II and forward and backward working cylinder
Two hot-wire coils series connection；It connects after two-way circuit in parallel with controller, external power supply.
7. a kind of magnetorheological intelligent tuning vibration absorber of half active as claimed in claim 6, which is characterized in that the acceleration
Spending inductor is unidirectional induction, and is placed on controlled structures.
8. a kind of magnetorheological intelligent tuning vibration absorber of half active as described in claim 1, which is characterized in that the piston
Diameter is less than damping cavity internal diameter, so that there are the flow channels of magnetorheological fluid in damping cavity.
9. as described in claim 1 a kind of half actively magnetorheological intelligent tuning vibration absorber, which is characterized in that every track
Length should be greater than the damping stroke of damping cavity.
10. a kind of magnetorheological intelligent tuning vibration absorber of half active as described in claim 1, which is characterized in that the cylinder
Body is made of stainless steel material；The spring is made by marmem.
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| CN111240006B (en) * | 2019-12-16 | 2022-04-05 | 中国科学院国家天文台南京天文光学技术研究所 | Bilinear horizontal sliding vibration reduction system of large astronomical telescope azimuth axis structure |
| CN111021571B (en) * | 2019-12-26 | 2021-04-27 | 山东大学 | Semi-active positive and negative stiffness parallel self-coordination vibration damper |
| CN111021570B (en) * | 2019-12-26 | 2021-04-27 | 山东大学 | Hydraulic inertial volume balance tuning vibration damper |
| CN111042370B (en) * | 2019-12-27 | 2021-03-12 | 山东大学 | Semi-active negative stiffness multidimensional vibration damper |
| CN111255105B (en) * | 2020-01-19 | 2021-04-27 | 山东大学 | Multidimensional electromagnetic intelligent vibration damper |
| CN111305408B (en) * | 2020-02-28 | 2021-01-15 | 山东大学 | Multidimensional integrated semi-active magneto-rheological vibration damper |
| CN111809759B (en) * | 2020-05-25 | 2021-10-08 | 山东电力工程咨询院有限公司 | Semi-active temperature control vibration reduction device and method based on shape memory alloy |
| CN112832399B (en) * | 2021-01-04 | 2022-03-01 | 山东电力工程咨询院有限公司 | Multistage self-adaptive composite inertial volume vibration reduction device, method and structure |
| CN113775071B (en) * | 2021-09-16 | 2022-06-21 | 山东大学 | Multifunctional shock absorber with energy recovery function |
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