CN109000114A - Self feed back three-stable state variation rigidity micro-vibration isolation mounting based on PVC Gel - Google Patents
Self feed back three-stable state variation rigidity micro-vibration isolation mounting based on PVC Gel Download PDFInfo
- Publication number
- CN109000114A CN109000114A CN201810934916.2A CN201810934916A CN109000114A CN 109000114 A CN109000114 A CN 109000114A CN 201810934916 A CN201810934916 A CN 201810934916A CN 109000114 A CN109000114 A CN 109000114A
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- CN
- China
- Prior art keywords
- pvc gel
- rack
- strutbeam
- girder
- vibration isolating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/002—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion characterised by the control method or circuitry
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/005—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion using electro- or magnetostrictive actuation means
- F16F15/007—Piezo-electric elements being placed under pre-constraint, e.g. placed under compression
-
- 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
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
Abstract
A kind of self feed back three-stable state variation rigidity micro-vibration isolation mounting based on PVC Gel, comprising: rack, compliant mechanism and vibration isolating mechanism, in which: vibration isolating mechanism circumference array is set in rack, and compliant mechanism is connected with vibration isolating mechanism.Rack includes: link block, connection ring and mounting bracket；Compliant mechanism includes: strutbeam, girder and central block；Vibration isolating mechanism include: adjustment axis and be set in adjustment axis for absorbing the PVC Gel unit of de minimis energy comprising: connected cathode plate, gel polyvinyl chloride film, mesh layer and anode plate from top to bottom.The present invention is lost with de minimis energy to significantly adjust rigidity by the steady-state characteristic of micro-displacement change compliant mechanism and realizes the better active control of performance, has better anti-vibration performance, and structure is simple, quality is small, consumes energy less, high reliablity.
Description
Technical field
It is specifically a kind of to be based on PVC Gel (polyvinyl chloride the present invention relates to a kind of technology of micro-vibration control field
Gel) self feed back three-stable state variation rigidity micro-vibration isolation mounting.
Background technique
With the development of science and technology, requirement of the high Sensitive Apparatus to vibration isolation is also higher and higher, such as on observation satellite
, there are very high requirement in high-precision camera, when normal work to the stability of satellite, general that vibration is required to be lower than 1x10-4G magnitude, this
Huge challenge is proposed to micro-vibration control.General Oscillation control has passive control, semi- active control and active control.Passively
Vibration-isolating platform is mainly made of High Damping Performance device, performance stabilization, high reliablity.However, traditional passive vibration isolation device is in low frequency
The anti-vibration performance of range (100Hz or less) is unsatisfactory；Active control technology can effectively inhibit low frequency micro-vibration to disturb, but mesh
Structure is complicated for preceding most of active control devices, and quality is big, energy consumption is big, and reliability is low.
Summary of the invention
The present invention In view of the above shortcomings of the prior art, proposes that a kind of self feed back three-stable state based on PVC Gel becomes
Rigidity micro-vibration isolation mounting changes the steady-state characteristic of compliant mechanism by micro-displacement, to adjust rigidity, significantly with small
Energy loss realizes the better active control of performance, has better anti-vibration performance, and structure is simple, quality is small, consumes energy less, reliably
Property it is high.
The present invention is achieved by the following technical solutions:
The present invention includes: rack, compliant mechanism and vibration isolating mechanism, in which: and vibration isolating mechanism circumference array is set in rack,
Compliant mechanism is connected with vibration isolating mechanism.
The rack includes: link block, connection ring and mounting bracket, in which: mounting bracket circumference array is set to company
It connects on ring, link block is connected with one end of mounting bracket.
The compliant mechanism includes: strutbeam, girder and central block, in which: strutbeam circumference array is set in rack, main
The both ends of beam are connected with symmetrically arranged strutbeam respectively, and the intermediate position of central block and girder is fixedly connected, the compliant mechanism
Rigidity is adjusted by micro-displacement.
The vibration isolating mechanism includes: adjustment axis and is set to several for absorbing the PVC of de minimis energy in adjustment axis
Gel unit, in which: the both ends of adjustment axis are connected with strutbeam respectively.
The two sides up and down of the girder are equipped with MFC piezoelectric patches.
The vertical bending in the both ends of the strutbeam is simultaneously equipped with through-hole.
Several PVC Gel units separately constitute PVC Gel column and lower PVC Gel column, described
One end of strutbeam is connected with rack, and the other end is set between PVC Gel column and lower PVC Gel column.
The PVC Gel unit includes: cathode plate connected from top to bottom, gel polyvinyl chloride film, mesh layer and sun
Pole plate.
The adjustment axis is set in mounting bracket.
Technical effect
Compared with prior art, the present invention changes the steady-state characteristic of compliant mechanism by micro-displacement, to significantly adjust
Rigidity is lost with de minimis energy and realizes the better active control of performance, realizes flexible vibration isolation, it may have rigid bearing capacity, and
And self feed back control is realized by the energy of acquisition vibration deformation, there is better anti-vibration performance, and structure is simple, quality
Small, less energy-consuming, high reliablity.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first stable state of the invention；
Fig. 2 is the structural schematic diagram of the second stable state of the invention；
Fig. 3 is the structural schematic diagram of third stable state of the present invention；
Fig. 4 is cross-sectional view of the invention；
Fig. 5 is the enlarged structure schematic diagram of part A in Fig. 4；
Fig. 6 is rack schematic diagram of the invention；
Fig. 7 is PVC Gel column structure schematic diagram of the invention；
Fig. 8 is PVC Gel cellular construction perspective view of the explosion of the invention；
Fig. 9 is three-stable state control schematic diagram of the invention；
Figure 10 is basic control flow journey figure of the invention；
In figure: rack 1, compliant mechanism 2, vibration isolating mechanism 3, strutbeam 4, girder 5, central block 6, MFC piezoelectric patches 7, lower PVC
Gel column 8, upper PVC Gel column 9, adjustment axis 10, link block 11, connection ring 12, mounting bracket 13, PVC Gel unit
14, gel polyvinyl chloride film 15, anode plate 16, cathode plate 17, mesh layer 18.
Specific embodiment
As shown in Figs 1-4, a kind of self feed back three-stable state variation rigidity micro-vibration based on PVC Gel being related to for the present embodiment
Isolation mounting includes: rack 1, compliant mechanism 2 and vibration isolating mechanism 3, in which: and 3 circumference array of vibration isolating mechanism is set in rack 1,
Compliant mechanism 2 is connected with vibration isolating mechanism 3.
The rack 1 includes: link block 11, connection ring 12 and four mounting brackets 13, in which: adjacent mounting bracket
13 are set at 90 ° intervals in connection ring 12, and link block 11 is connected with the lower end of mounting bracket 13.
The compliant mechanism 2 includes: four strutbeams, 4, two girders 5 and a central block 6, in which: adjacent strutbeam 4
It is set at 90 ° intervals in rack 1, the both ends of girder 5 are connected with the strutbeam 4 for being spaced 180 ° respectively, in central block 6 and girder 5
Between position be fixedly connected.
The vibration isolating mechanism 3 includes: adjustment axis 10 and several PVC Gel units 14 for being set in adjustment axis 10.
Several PVC Gel units 14 separately constitute PVC Gel column 9 and lower PVC Gel column 8, institute
The upper end for the strutbeam 4 stated is connected with mounting bracket 13, and the other end is set to PVC Gel column 9 and lower PVC Gel column
Between 8.
The vertical bending in both ends of the strutbeam 4 is simultaneously equipped with through-hole.
The two sides up and down of the girder 5 are equipped with MFC piezoelectric patches 7.
The adjustment axis 10 is set in mounting bracket 13.
The PVC Gel unit 14 includes: cathode plate 17 connected from top to bottom, gel polyvinyl chloride film 15, mesh
Layer 18 and anode plate 16.
The gel polyvinyl chloride film 15 is used as electroactive polymer, can deform after power-up, thickness is preferably 0.7
~1.3mm.
The girder 5 is equipped with electric control panel, which includes signal processing circuit, control circuit, electricity
Press loaded circuit, in which: the positive and negative anodes of MFC piezoelectric patches are connected with signal processing circuit by conducting wire, anode plate and cathode plate and
Voltage-drop loading circuit is connected by conducting wire；
The voltage signal of the signal processing circuit acquisition, processing MFC piezoelectric patches is simultaneously transferred to control circuit, control electricity
Road controls load or off voltage, voltage-drop loading circuit on-load voltage to PVC Gel unit by feedback signal.
As shown in figure 9, settable to be in third stable state, compliant mechanism is in stabilization when the present apparatus is not affected by vibrational excitation
There is bearing capacity under state.Displacement is generated when girder is vibrated excitation, MFC piezoelectric patches deforms therewith, thus will reflection
The voltage signal of girder displacement information is sent to electric control panel.If girder has downward displacement trend, upper PVC Gel column
Shape body is powered, lower PVC Gel column power-off；When PVC Gel column is powered, gel polyvinyl chloride film is filled out by anode plate absorption
It is charged in mesh layer, hole is filled, and the thickness of PVC Gel unit is thinning, and PVC Gel column body length reduces, PVC Gel column
When shape body powers off, gel polyvinyl chloride film is discharged from mesh layer, and PVC Gel unit restores original thickness, and PVC Gel column is long
Degree increases；Upper PVC Gel column energized length reduces to be increased with lower PVC Gel column power-off length, strutbeam both ends distance
Reduce, strutbeam becomes bistable state buckled beam, but because girder restraining force, strutbeam only can inside buckling so that girder becomes double
Stable state buckled beam, girder have the trend for becoming the second stable state, and girder is negative stiffness in the rigidity of third stable state neighbouring position；Such as
Fruit girder has upward displacement trend from the second stable state, and upper PVC Gel column power-off increases to length, lower PVC Gel
Column is powered to which length reduces, and strutbeam both ends distance increases, and strutbeam 4 becomes monostable straight beam, so that girder becomes monostable
State straight beam, girder have the trend for becoming third stable state, and the rigidity of position near the second stable state upward direction of girder 5 is negative
Rigidity；Equally, if girder has upward displacement trend in third stable state, upper PVC Gel column is powered to which length subtracts
Small, the power-off of lower PVC Gel column increases to length, and strutbeam both ends distance reduces, and strutbeam becomes bistable state buckled beam, but because
For the restraining force of girder, strutbeam only can inside buckling so that girder becomes bistable state buckled beam, girder has and becomes the first stable state
Trend, girder third stable state neighbouring position rigidity be negative stiffness.It can be controlled in real time according to the feedback signal of MFC piezoelectric patches
The steady-state characteristic of girder processed, so that girder is reduced to zero stiffness or negative stiffness, girder active with vibration in direction of vibration rigidity
Deformation, without transmitting will be vibrated, to realize vibration isolation.
Present apparatus structure novel, simple by that can obtain above, rationally, PVC Gel is as a kind of newly electroactive for design
Polymer material, have higher stability, driving voltage be dielectric elastomer material 1/10th, simple process,
It is low in cost.It is driven by PVC Gel column and generates thin tail sheep, it is reliable and stable, response is fast, energy consumption is few；Pass through steady-state characteristic
Change and adjust rigidity, realize and rigidity is adjusted significantly with micro-displacement, takes into account flexible vibration isolation and rigidity carries；And pass through acquisition
The energy of vibration deformation realizes self feed back control.
Above-mentioned specific implementation can by those skilled in the art under the premise of without departing substantially from the principle of the invention and objective with difference
Mode carry out local directed complete set to it, protection scope of the present invention is subject to claims and not by above-mentioned specific implementation institute
Limit, each implementation within its scope is by the constraint of the present invention.
Claims (6)
1. a kind of self feed back three-stable state variation rigidity micro-vibration isolation mounting based on PVC Gel characterized by comprising rack,
Compliant mechanism and vibration isolating mechanism, in which: vibration isolating mechanism circumference array is set in rack, and compliant mechanism is connected with vibration isolating mechanism；
The compliant mechanism includes: strutbeam, girder and central block, in which: strutbeam circumference array is set in rack, girder
Both ends are connected with symmetrically arranged strutbeam respectively, and the intermediate position of central block and girder is fixedly connected, the rigidity of the compliant mechanism
It is adjusted by micro-displacement；
The vibration isolating mechanism include: adjustment axis and be set in adjustment axis for absorbing the PVC Gel unit of de minimis energy,
Wherein: the both ends of adjustment axis are connected with strutbeam respectively.
2. the apparatus according to claim 1, characterized in that the rack includes: link block, connection ring and installation branch
Frame, in which: mounting bracket circumference array is set in connection ring, and link block is connected with one end of mounting bracket.
3. the apparatus according to claim 1, characterized in that the two sides up and down of the girder are equipped with MFC piezoelectric patches.
4. the apparatus according to claim 1, characterized in that the vertical bending in the both ends of the strutbeam is simultaneously equipped with through-hole.
5. the apparatus according to claim 1, characterized in that several PVC Gel units separately constitute PVC Gel
Column and lower PVC Gel column, one end of the strutbeam are connected with rack, and the other end is set to PVC Gel column
Between body and lower PVC Gel column.
6. device according to claim 1 or 5, characterized in that the PVC Gel unit includes: connected from top to bottom
Cathode plate, gel polyvinyl chloride film, mesh layer and anode plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934916.2A CN109000114B (en) | 2018-08-16 | 2018-08-16 | Self-feedback tristable rigidity-variable micro-vibration isolation device based on PVC Gel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810934916.2A CN109000114B (en) | 2018-08-16 | 2018-08-16 | Self-feedback tristable rigidity-variable micro-vibration isolation device based on PVC Gel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109000114A true CN109000114A (en) | 2018-12-14 |
| CN109000114B CN109000114B (en) | 2020-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810934916.2A Active CN109000114B (en) | 2018-08-16 | 2018-08-16 | Self-feedback tristable rigidity-variable micro-vibration isolation device based on PVC Gel |
Country Status (1)
| Country | Link |
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| CN (1) | CN109000114B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544976A (en) * | 2019-09-23 | 2019-12-06 | 重庆大学 | Piezoelectric self-powered combined beam vibration damper and control method thereof |
| CN110578770A (en) * | 2019-09-23 | 2019-12-17 | 上海大学 | Electromagnetic-piezoelectric composite vibration control device based on synchronous switch damping technology |
| CN111692257A (en) * | 2020-06-17 | 2020-09-22 | 华中科技大学 | Extrusion film type self-tuning vibration absorber |
| CN113309784A (en) * | 2021-06-16 | 2021-08-27 | 西北工业大学 | Geometric nonlinear adjustable multi-stable-state device |
| CN113565922A (en) * | 2021-08-23 | 2021-10-29 | 北京理工大学 | Integrated quasi-zero stiffness vibration isolation buffering element and vibration isolation buffering assembly |
| CN114321260A (en) * | 2022-01-20 | 2022-04-12 | 中国矿业大学 | Electro-active quasi-zero stiffness vibration isolator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110544976A (en) * | 2019-09-23 | 2019-12-06 | 重庆大学 | Piezoelectric self-powered combined beam vibration damper and control method thereof |
| CN110578770A (en) * | 2019-09-23 | 2019-12-17 | 上海大学 | Electromagnetic-piezoelectric composite vibration control device based on synchronous switch damping technology |
| CN110544976B (en) * | 2019-09-23 | 2021-02-02 | 重庆大学 | Piezoelectric self-powered combined beam vibration damper and control method thereof |
| CN111692257A (en) * | 2020-06-17 | 2020-09-22 | 华中科技大学 | Extrusion film type self-tuning vibration absorber |
| CN111692257B (en) * | 2020-06-17 | 2021-10-08 | 华中科技大学 | Extrusion film type self-tuning vibration absorber |
| CN113309784A (en) * | 2021-06-16 | 2021-08-27 | 西北工业大学 | Geometric nonlinear adjustable multi-stable-state device |
| CN113309784B (en) * | 2021-06-16 | 2022-04-05 | 西北工业大学 | Geometric nonlinear adjustable multi-stable-state device |
| CN113565922A (en) * | 2021-08-23 | 2021-10-29 | 北京理工大学 | Integrated quasi-zero stiffness vibration isolation buffering element and vibration isolation buffering assembly |
| CN113565922B (en) * | 2021-08-23 | 2022-06-10 | 北京理工大学 | Integrated quasi-zero stiffness vibration isolation buffering element and vibration isolation buffering assembly |
| CN114321260A (en) * | 2022-01-20 | 2022-04-12 | 中国矿业大学 | Electro-active quasi-zero stiffness vibration isolator |
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