CN109374485A - A kind of magnetorheological fluid sedimentation speed detector, method and system - Google Patents
A kind of magnetorheological fluid sedimentation speed detector, method and system Download PDFInfo
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- CN109374485A CN109374485A CN201811180526.7A CN201811180526A CN109374485A CN 109374485 A CN109374485 A CN 109374485A CN 201811180526 A CN201811180526 A CN 201811180526A CN 109374485 A CN109374485 A CN 109374485A
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- magnetorheological fluid
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- 239000012530 fluid Substances 0.000 title claims abstract description 151
- 238000004062 sedimentation Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000001514 detection method Methods 0.000 claims abstract description 50
- 230000005291 magnetic effect Effects 0.000 claims abstract description 48
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 230000005294 ferromagnetic effect Effects 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005307 ferromagnetism Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/04—Investigating sedimentation of particle suspensions
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The invention discloses a kind of magnetorheological fluid sedimentation speed detectors, method and system.The device includes: the first conducting wire, the second conducting wire, inner wall, outside wall surface, magnetorheological fluid and pole plate；First conducting wire is connected to the outside of the inner wall, and second conducting wire is connected to the outside of the outside wall surface；The magnetorheological fluid is arranged between the inner wall and the outside wall surface；Multiple pole plates are arranged in pairs in the inside of the inner wall and the inside of the outside wall surface.Apply magnetic field to magnetorheological fluid sedimentation speed detector, measurement applies the impedance value of the magnetorheological fluid behind magnetic field, cancels magnetic field after having measured；Then according to the sinking speed of the resistance value detection magnetorheological fluid.Method of the invention carries out the detection of magnetorheological fluid sedimentation speed, overcome the drawbacks of prior art can only detect under experimental situation, and it can be applied to the failure detection of engineering magnetorheological fluid in practice, the present invention has higher measurement accuracy to the detection of magnetorheological fluid sedimentation.
Description
Technical field
The present invention relates to magnetorheological fluid sedimentation characteristic test fields, more particularly to a kind of magnetorheological fluid sedimentation velocity measuring
Device, method and system.
Background technique
Magnetorheological fluid is a kind of current very popular intellectual material, is mixed by magnetic-particle, carrier fluid and additive,
It is widely used in the fields such as damping, polishing, building, automobile.It is right in engineering with going deep into magnetorheological fluid application study
The performance requirement of magnetorheological fluid is also gradually got higher.But due to the dispersed phase (magnetic-particle) and continuous phase (load in magnetorheological fluid
Liquid and additive) between there is biggish density contrast and gravity phenomenon, therefore the sinking speed of magnetorheological fluid and sedimentation are steady
Qualitative question is difficult to avoid that always.Also the extensive use of magnetorheological fluid is seriously exactly hindered because of this defect.?
There are following several methods: light transmittance pulsation detection method, at regular time and quantity chemical sample method, inductance in existing bibliography research
Method etc. is used to concentration variation in the infall process of detection magnetorheological fluid, but these characterizing methods all more or less exist
Drawback is only applicable to experimental situation and the more difficult detection applied in Practical Project.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of magnetorheological fluid sedimentation speed detectors, method and system.
To achieve the above object, the present invention provides following schemes:
A kind of magnetorheological fluid sedimentation speed detector, the detection device include: the first conducting wire, the second conducting wire, inner wall
Face, outside wall surface, magnetorheological fluid and pole plate；First conducting wire is connected to the outside of the inner wall, second conducting wire with
The outside of the outside wall surface is connected to；The magnetorheological fluid is arranged between the inner wall and the outside wall surface；Multiple poles
Plate is arranged in pairs in the inside of the inner wall and the inside of the outside wall surface.
Optionally, the magnetorheological fluid includes carrier fluid and ferromagnetic particle.
A kind of magnetorheological fluid sedimentation speed detection method, the method apply above-mentioned detection device, comprising:
Apply magnetic field to magnetorheological fluid sedimentation speed detector, the magnetic direction is perpendicular to inner wall and outside wall surface；
Measurement applies the impedance value of the magnetorheological fluid behind magnetic field, cancels magnetic field after having measured；
According to the sinking speed of the resistance value detection magnetorheological fluid.
Optionally, the sinking speed according to the resistance value detection magnetorheological fluid, specifically includes:
Obtain the relation curve of ferromagnetic particle concentration in magnetorheological fluid impedance value and magnetorheological fluid；
According to the relation curve and the impedance value, ferromagnetic particle concentration in magnetorheological fluid is determined；
According to ferromagnetic particle concentration in the magnetorheological fluid, the sinking speed of magnetorheological fluid is detected.
Optionally, in the sinking speed according to the resistance value detection magnetorheological fluid, later further include:
According to the sinking speed of the magnetorheological fluid, the settling phase of the magnetorheological fluid is judged；
When judging result states the settling phase of the magnetorheological fluid lower than stable threshold, after preset time again to
Magnetorheological fluid sedimentation speed detector applies magnetic field；
Measurement applies the impedance value of the magnetorheological fluid behind magnetic field again.
A kind of magnetorheological fluid sedimentation speed detection system, comprising:
First magnetic field applies module, for applying magnetic field, the magnetic direction to magnetorheological fluid sedimentation speed detector
Perpendicular to inner wall and outside wall surface；
Measurement module cancels magnetic field after having measured for measuring the impedance value of the magnetorheological fluid after applying magnetic field；
Detection module, for the sinking speed according to the resistance value detection magnetorheological fluid.
Optionally, the detection module specifically includes:
Relation curve acquiring unit, for obtaining the pass of ferromagnetic particle concentration in magnetorheological fluid impedance value and magnetorheological fluid
It is curve；
Concentration determination unit, for determining ferromagnetism in magnetorheological fluid according to the relation curve and the impedance value
Granule density；
Speed detection unit, for detecting the sedimentation of magnetorheological fluid according to ferromagnetic particle concentration in the magnetorheological fluid
Speed.
Optionally, the system also includes:
Judgment module judges the settling phase of the magnetorheological fluid for the sinking speed according to the magnetorheological fluid；
Second magnetic field applies module, for stating the settling phase of the magnetorheological fluid when judging result lower than stable threshold
When, apply magnetic field to magnetorheological fluid sedimentation speed detector again after preset time；
Second measurement module, for measuring the impedance value of the magnetorheological fluid after applying magnetic field again.
Compared with prior art, the present invention has following technical effect that the present invention proposes the resistance by measurement magnetorheological fluid
Anti- value characterizes the sinking speed of magnetorheological fluid, carries out the detection of magnetorheological fluid sedimentation speed by means of the present invention, overcomes
The drawbacks of prior art can only detect under experimental situation, and can be applied to the failure inspection of engineering magnetorheological fluid in practice
It surveys, the present invention has higher measurement accuracy to the detection of magnetorheological fluid sedimentation.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of magnetorheological fluid sedimentation of embodiment of the present invention speed detector；
Fig. 2 is the flow chart of magnetorheological fluid sedimentation of embodiment of the present invention speed detection method；
Fig. 3 is the structural block diagram of magnetorheological fluid sedimentation of embodiment of the present invention speed detection system.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Figure 1, magnetorheological fluid sedimentation speed detector include: the first conducting wire 1, it is the second conducting wire 7, inner wall 2, outer
Wall surface 6, magnetorheological fluid and pole plate 5；The magnetorheological fluid includes carrier fluid 3 and ferromagnetic particle 4.First conducting wire 1 with
The outside of the inner wall 2 is connected to, and second conducting wire 7 is connected to the outside of the outside wall surface 6；The magnetorheological fluid setting exists
Between the inner wall 2 and the outside wall surface 6；Multiple pole plates 5 are arranged in pairs in the inside of the inner wall 2 and described outer
The inside of wall surface 6, and come into full contact with magnetorheological fluid.
Magnetorheological fluid sedimentation speed detection method applies above-mentioned detection device, as shown in Fig. 2, magnetorheological fluid sedimentation speed
Detection method includes:
Step 201: apply magnetic field to magnetorheological fluid sedimentation speed detector, the magnetic direction perpendicular to inner wall and
Outside wall surface.
Step 202: measurement applies the impedance value of the magnetorheological fluid behind magnetic field, cancels magnetic field after having measured.
Step 203: according to the sinking speed of the resistance value detection magnetorheological fluid.Obtain magnetorheological fluid impedance value and magnetic current
Become the relation curve of ferromagnetic particle concentration in liquid；According to the relation curve and the impedance value, determine in magnetorheological fluid
Ferromagnetic particle concentration；According to ferromagnetic particle concentration in the magnetorheological fluid, the sinking speed of magnetorheological fluid is detected.
Since the negatively correlated function of concentration of ferromagnetic particle in the impedance value and magnetorheological fluid of magnetorheological fluid isWherein, Z indicates that impedance value, R (φ) are the function that the resistance value of magnetorheological fluid is about concentration φ, C
(φ) is the function that the capacitance of magnetorheological fluid is about concentration φ, and ω is frequency, and j indicates imaginary part direction
It and is the function i.e. V=V of ferromagnetic particle concentration according to the sinking speed of Cauchy's theory magnetorheological fluid0
φk, V expression sinking speed；φ indicates concentration；V0, k expression constant.Therefore it can be characterized by the impedance value Z of magnetorheological fluid
The rate of settling V of magnetorheological fluid.
After step 103 further include:
According to the sinking speed of the magnetorheological fluid, the settling phase of the magnetorheological fluid is judged；The sedimentation of magnetorheological fluid
Stability can be determined by sinking speed, when sinking speed is 0, i.e. sedimentation completely, and magnetorheological fluid failure at this time.
When judging result states the settling phase of the magnetorheological fluid lower than stable threshold, after preset time again to
Magnetorheological fluid sedimentation speed detector applies magnetic field；
Measurement applies the impedance value of the magnetorheological fluid behind magnetic field again.
The specific embodiment provided according to the present invention, the invention discloses following technical effects: present invention proposition passes through survey
The impedance value of magnetorheological fluid is measured to characterize the sinking speed of magnetorheological fluid, carries out magnetorheological fluid sedimentation speed by means of the present invention
The detection of degree overcomes the drawbacks of prior art can only detect under experimental situation, and can be applied to engineering magnetic in practice
The failure detection of rheology liquid, the present invention have higher measurement accuracy to the detection of magnetorheological fluid sedimentation.
As shown in figure 3, a kind of magnetorheological fluid sedimentation speed detection system, comprising:
First magnetic field applies module 301, for applying magnetic field, the magnetic field side to magnetorheological fluid sedimentation speed detector
To perpendicular to inner wall and outside wall surface.
Measurement module 302 cancels magnetic field after having measured for measuring the impedance value of the magnetorheological fluid after applying magnetic field.
Detection module 303, for the sinking speed according to the resistance value detection magnetorheological fluid.
The detection module 303 specifically includes:
Relation curve acquiring unit, for obtaining the pass of ferromagnetic particle concentration in magnetorheological fluid impedance value and magnetorheological fluid
It is curve；
Concentration determination unit, for determining ferromagnetism in magnetorheological fluid according to the relation curve and the impedance value
Granule density；
Speed detection unit, for detecting the sedimentation of magnetorheological fluid according to ferromagnetic particle concentration in the magnetorheological fluid
Speed.
The system also includes:
Judgment module judges the settling phase of the magnetorheological fluid for the sinking speed according to the magnetorheological fluid；
Second magnetic field applies module, for stating the settling phase of the magnetorheological fluid when judging result lower than stable threshold
When, apply magnetic field to magnetorheological fluid sedimentation speed detector again after preset time；
Second measurement module, for measuring the impedance value of the magnetorheological fluid after applying magnetic field again.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For system disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (8)
1. a kind of magnetorheological fluid sedimentation speed detector, which is characterized in that the detection device includes: the first conducting wire, second
Conducting wire, inner wall, outside wall surface, magnetorheological fluid and pole plate；First conducting wire is connected to the outside of the inner wall, and described
Two conducting wires are connected to the outside of the outside wall surface；The magnetorheological fluid is arranged between the inner wall and the outside wall surface；It is more
A pole plate is arranged in pairs in the inside of the inner wall and the inside of the outside wall surface.
2. magnetorheological fluid sedimentation speed detector according to claim 1, which is characterized in that the magnetorheological fluid includes
Carrier fluid and ferromagnetic particle.
3. a kind of magnetorheological fluid sedimentation speed detection method, which is characterized in that the method application claim 1-2 any one
The detection device, comprising:
Apply magnetic field to magnetorheological fluid sedimentation speed detector, the magnetic direction is perpendicular to inner wall and outside wall surface；
Measurement applies the impedance value of the magnetorheological fluid behind magnetic field, cancels magnetic field after having measured；
According to the sinking speed of the resistance value detection magnetorheological fluid.
4. magnetorheological fluid sedimentation speed detection method according to claim 3, which is characterized in that described according to the impedance
The sinking speed of value detection magnetorheological fluid, specifically includes:
Obtain the relation curve of ferromagnetic particle concentration in magnetorheological fluid impedance value and magnetorheological fluid；
According to the relation curve and the impedance value, ferromagnetic particle concentration in magnetorheological fluid is determined；
According to ferromagnetic particle concentration in the magnetorheological fluid, the sinking speed of magnetorheological fluid is detected.
5. magnetorheological fluid sedimentation speed detection method according to claim 3, which is characterized in that described according to the resistance
The sinking speed of anti-value detection magnetorheological fluid, later further include:
According to the sinking speed of the magnetorheological fluid, the settling phase of the magnetorheological fluid is judged；
When judging result states the settling phase of the magnetorheological fluid lower than stable threshold, again to magnetic current after preset time
Become liquid sinking speed detection device and applies magnetic field；
Measurement applies the impedance value of the magnetorheological fluid behind magnetic field again.
6. a kind of magnetorheological fluid sedimentation speed detection system characterized by comprising
First magnetic field applies module, and for applying magnetic field to magnetorheological fluid sedimentation speed detector, the magnetic direction is vertical
In inner wall and outside wall surface；
Measurement module cancels magnetic field after having measured for measuring the impedance value of the magnetorheological fluid after applying magnetic field；
Detection module, for the sinking speed according to the resistance value detection magnetorheological fluid.
7. magnetorheological fluid sedimentation speed detection system according to claim 6, which is characterized in that the detection module is specific
Include:
Relation curve acquiring unit, the relationship for obtaining ferromagnetic particle concentration in magnetorheological fluid impedance value and magnetorheological fluid are bent
Line；
Concentration determination unit, for determining ferromagnetic particle in magnetorheological fluid according to the relation curve and the impedance value
Concentration；
Speed detection unit, for detecting the sinking speed of magnetorheological fluid according to ferromagnetic particle concentration in the magnetorheological fluid.
8. magnetorheological fluid sedimentation speed detection system according to claim 6, which is characterized in that the system also includes:
Judgment module judges the settling phase of the magnetorheological fluid for the sinking speed according to the magnetorheological fluid；
Second magnetic field applies module, when for stating the settling phase of the magnetorheological fluid when judging result lower than stable threshold,
Apply magnetic field to magnetorheological fluid sedimentation speed detector again after preset time；
Second measurement module, for measuring the impedance value of the magnetorheological fluid after applying magnetic field again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180526.7A CN109374485B (en) | 2018-10-11 | 2018-10-11 | Magnetorheological fluid settling velocity detection device, method and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811180526.7A CN109374485B (en) | 2018-10-11 | 2018-10-11 | Magnetorheological fluid settling velocity detection device, method and system |
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| Publication Number | Publication Date |
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| CN109374485A true CN109374485A (en) | 2019-02-22 |
| CN109374485B CN109374485B (en) | 2021-01-26 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003104845A1 (en) * | 2002-06-10 | 2003-12-18 | Valtion Teknillinen Tutkimuskeskus | Method and arrangement for determining sedimentation in a magnetorheological fluid |
| CN102175582A (en) * | 2011-01-10 | 2011-09-07 | 谭和平 | Magnetorheological fluid sedimentation tester |
| CN103323377A (en) * | 2013-05-29 | 2013-09-25 | 武汉理工大学 | Method and device for testing settlement rate and settlement state of solid-liquid two phase mixture by thermal conductivity method |
| CN103635288A (en) * | 2011-04-13 | 2014-03-12 | Qed技术国际股份有限公司 | Method and apparatus for measurement and control of magnetic particle concentration in a magnetorheological fluid |
| CN104048903A (en) * | 2014-06-26 | 2014-09-17 | 重庆大学 | Magnetorheological fluid sedimentation rate determination instrument and determination method thereof |
| CN104729964A (en) * | 2015-03-07 | 2015-06-24 | 江苏大学 | Anti-settlement device and method of magnetorheological material |
| CN106546517A (en) * | 2016-09-29 | 2017-03-29 | 中国农业大学 | Magnetorheological fluid sedimentation process electric capacity monitoring device and monitoring method |
-
2018
- 2018-10-11 CN CN201811180526.7A patent/CN109374485B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003104845A1 (en) * | 2002-06-10 | 2003-12-18 | Valtion Teknillinen Tutkimuskeskus | Method and arrangement for determining sedimentation in a magnetorheological fluid |
| CN102175582A (en) * | 2011-01-10 | 2011-09-07 | 谭和平 | Magnetorheological fluid sedimentation tester |
| CN103635288A (en) * | 2011-04-13 | 2014-03-12 | Qed技术国际股份有限公司 | Method and apparatus for measurement and control of magnetic particle concentration in a magnetorheological fluid |
| CN103323377A (en) * | 2013-05-29 | 2013-09-25 | 武汉理工大学 | Method and device for testing settlement rate and settlement state of solid-liquid two phase mixture by thermal conductivity method |
| CN104048903A (en) * | 2014-06-26 | 2014-09-17 | 重庆大学 | Magnetorheological fluid sedimentation rate determination instrument and determination method thereof |
| CN104729964A (en) * | 2015-03-07 | 2015-06-24 | 江苏大学 | Anti-settlement device and method of magnetorheological material |
| CN106546517A (en) * | 2016-09-29 | 2017-03-29 | 中国农业大学 | Magnetorheological fluid sedimentation process electric capacity monitoring device and monitoring method |
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