CN102253674A - Intelligent current stabilizer and method - Google Patents
Intelligent current stabilizer and method Download PDFInfo
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- CN102253674A CN102253674A CN2011101033418A CN201110103341A CN102253674A CN 102253674 A CN102253674 A CN 102253674A CN 2011101033418 A CN2011101033418 A CN 2011101033418A CN 201110103341 A CN201110103341 A CN 201110103341A CN 102253674 A CN102253674 A CN 102253674A
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Abstract
The invention relates to an intelligent current stabilizer and method controlled by electro-rheological fluid, which is mainly characterized in that the self-adaption adjustment for the flow speed of the fluid is realized based on the combination of a laser speckle speed measurement technique and an electro-rheological technique, thereby reaching the purpose of current stabilization. When laser beams pass through the fluid containing trace particles, the transient speed of the fluid is obtained through a laser speckle speed measurement method. The transient speed of the fluid is compared with a set speed value through a control program, the electric field strength value applied on the fluid is determined; the fluid scattered with the trace particles generates electro-rheological effects; and the flow speed of the fluid in a pipeline is adjusted to be in correspondence with a set value by changing the solidification degree of the fluid, thereby realizing current stabilization. The invention can realize real-time measurement for the flow speed of the fluid and can realize automatic control for the flow speed and flow quantity of the fluid; and simultaneously, the system has the advantage of simplicity in structure and is easy to realize.
Description
Technical field
The present invention relates to a kind of fluid constant-current stabilizer and method, particularly relate to a kind of self-adaptation constant-current stabilizer and method by electrorheological fluid control.
Background technology
Present existing current stabilization method adopts mechanical structure more, and its advantage is that cost is low, and shortcoming is not high, the measurement flow rate in real time of complex structure, control accuracy.The laser speckle velocimetry is meant even spreading molecule in fluid, and promptly trace particle when granule density is big, has laser radiation just can produce laser speckle.By relevant laser speckle analysis software, thus can measure trace particle in known very short time the displacement at interval measure the velocity distribution of transient state in the flow field indirectly, be a kind of measuring method of non-intrusion type rate of flow of fluid.But the laser speckle velocimetry can only be used to measure the speed of fluid, but can not realize controlling the purpose of flow velocity.Electrorheological fluid is to be dispersed in a kind of suspending liquid that forms in the insulating oil by small dielectric grain, under the extra electric field effect, can realize between solid-liquid rapidly, continuously, reversible transformation, thereby be a kind of desirable technique of controlling rate of flow of fluid, as utilize electric rheological effect can make various electrorheological valves.Though same electro-rheological technology can realize controlling the purpose of flow velocity, and can't measurement flow rate.If it is above-mentioned two kinds of technology are effective in the accurate measurement and the control that just are expected to realize fluid flow rate and flow.
Summary of the invention
The apparatus and method that the purpose of this invention is to provide a kind of fluid current stabilization, measure the speed of fluid by the laser speckle velocimetry, compare with the speed of setting, and be applied to electric field intensity on the fluid in conjunction with computer control system control, make fluid produce electric rheological effect, thereby realize the control of fluid flow rate, reach the purpose of current stabilization.
The objective of the invention is to be achieved through the following technical solutions: the laser speckle test system that is used for measuring fluid trace particle movement velocity, comprise laser instrument, polaroid, lens, the fluid of light beam irradiates in transparent pipeline through lens, the high-speed CCD camera is positioned on the light path of transparent pipeline opposite side, the face of accepting is over against the incident light direction, the high-speed CCD camera is saved in the speckle information that obtains in the computing machine by data collecting card, by the cross-correlation calculation software in the computing machine speckle information is handled the movement velocity that can obtain trace particle, be rate of flow of fluid.Computing machine is connected with a D/A converter by output terminal again, D/A converter inserts the controllable high-voltage power supply, two leads that the controllable high-voltage power supply is drawn are connected on two battery lead plates that are set in pipe interior, and two battery lead plates are installed on two relative surfaces of transparent pipeline.By corresponding control programs, the flow velocity of measuring is compared with the flow velocity of setting, when greater than the setting flow speed value, control program calculates the magnitude of voltage that high-voltage power supply need apply on the battery lead plate of pipeline, make the fluid in the pipeline produce electric rheological effect, thereby rate of flow of fluid is reduced, reach the purpose of current stabilization.
Owing to adopt technique scheme, the present invention has such beneficial effect, promptly can make full use of trace particle, making it both can be used for laser speckle tests the speed, can be used to produce electric rheological effect again, only need can reach the effect of current stabilization in conjunction with the corresponding computer control technology, and simple in structure, be easy to realize.
Description of drawings
Accompanying drawing is said a kind of intelligent constant-current stabilizer structural representation according to the present invention.
Embodiment
Below in conjunction with accompanying drawing, being scattered in the fluid that constitutes in the methyl-silicone oil with starch granules is example, and the present invention is described in further detail.
Referring to accompanying drawing, be used for the laser speckle velocity-measuring system of fluid starch granules movement velocity according to the present invention, it mainly comprises laser instrument 1, polaroid 2, lens 3, transparent pipeline 4, the equally distributed fluid 5 of particle, CCD camera 6 and computing machine 7 compositions.When laser beam is sent by laser instrument 1, when passing the fluid 5 that evenly is dispersed with amylum grain, will form the laser speckle image, receive and be stored in the computing machine 7 by CCD camera 6, can obtain the instantaneous velocity in flow field through image cross-correlation calculation software processes; By corresponding calculated machine control program, the velocity amplitude of setting in this velocity amplitude and the computing machine is compared, when fluid velocity in the pipeline during greater than setting value, calculate the impressed voltage value that need be applied on the transparent pipeline 4, the voltage digital signal that computing machine calculates program passes to D/A converter 8 and converts voltage analog signal to, this simulating signal is imported controllable high-voltage power supply 9 again, be applied to through lead 10 on two battery lead plates 11 of pipeline, the battery lead plate material is a conductive rubber, two battery lead plates 11 are installed on two relative surfaces of transparent pipeline 4, make fluid produce electric rheological effect, starch granules can be arranged in chain or column structure 12 along direction of an electric field in the fluid, fluid shows the feature of class solid, thereby makes flow velocity be reduced to setting value; When fluctuation appearred in flow velocity in the pipeline, the laser speckle velocity-measuring system detected in real time and readjusts the required magnitude of voltage that applies by control program, makes rate of flow of fluid remain at the setting flow velocity.By the state of cure of control fluid, realized the control flow rate of fluid, thereby reached the purpose of current stabilization like this.
Claims (6)
1. intelligent constant-current stabilizer, it is characterized in that comprising laser instrument (1), on the light beam working direction of this laser instrument (1), be provided with polaroid (2) successively, lens (3), transparent pipeline (4), the equally distributed fluid of particle (5) in the transparent pipeline (4), CCD camera (6), the output terminal of described CCD camera (6) links to each other with the input end of computing machine (7), the output terminal of computing machine (7) successively with D/A converter (8), controllable high-voltage power supply (9), lead (10), two battery lead plates (11) link to each other, and described two battery lead plates (11) are installed on two relative surfaces of transparent pipeline (4).
2. intelligent constant-current stabilizer according to claim 1 is characterized in that dispersed particle in the fluid (5) both can be used for laser speckle and tested the speed, and can produce electric rheological effect under the extra electric field effect again.
3. intelligent constant-current stabilizer according to claim 1 is characterized in that fluid (5) is an insulating oil.
4. intelligent current stabilization method, it is characterized in that: the instantaneous velocity of measuring particle stream with uniform distribution body (5) by the laser speckle velocity-measuring system, by control program this speed and setting speed are compared, when fluid velocity in the pipeline during greater than setting value, calculate the impressed voltage value that need apply, the voltage digital signal of output passes to D/A converter (8) and converts voltage analog signal to, import controllable high-voltage power supply (9) again, its output voltage is applied to through lead (10) on two battery lead plates (11) of pipeline, and the fluid of controlling between two battery lead plates (11) (5) produces electric rheological effect.
5. intelligent current stabilization method according to claim 4 is characterized in that dispersed particle in the fluid (5) both can be used for laser speckle and tested the speed, and can produce electric rheological effect under the extra electric field effect again.
6. intelligent current stabilization method according to claim 4 is characterized in that fluid (5) is an insulating oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101033418A CN102253674A (en) | 2011-04-25 | 2011-04-25 | Intelligent current stabilizer and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101033418A CN102253674A (en) | 2011-04-25 | 2011-04-25 | Intelligent current stabilizer and method |
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| CN102253674A true CN102253674A (en) | 2011-11-23 |
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| CN2011101033418A Pending CN102253674A (en) | 2011-04-25 | 2011-04-25 | Intelligent current stabilizer and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185808A (en) * | 2012-03-30 | 2013-07-03 | 嘉兴学院 | Photoelectric technology-based bubble velocity-measuring system |
| CN103675333A (en) * | 2013-12-08 | 2014-03-26 | 中国科学院过程工程研究所 | Device and method for measuring micro-fluid velocity field in real time |
| CN103746286A (en) * | 2014-01-07 | 2014-04-23 | 高秀敏 | Adjustable and controllable dye laser based on light fluid |
| CN104064957A (en) * | 2014-05-09 | 2014-09-24 | 杭州电子科技大学 | Adjustable and controllable optical flow control dye laser based on electrorheological effect |
| CN104698219A (en) * | 2015-03-18 | 2015-06-10 | 东南大学 | Flow two dimension velocity field measurement device and method based on near field scattering |
| CN105445492A (en) * | 2015-12-14 | 2016-03-30 | 华中科技大学 | Scattering medium-penetrating laser speckle flow speed detection method and device thereof |
| CN106771349A (en) * | 2016-12-26 | 2017-05-31 | 浙江科聪智能科技有限公司 | Contactless water speed measurement sensor, Intelligent pipe net, the intelligent network of rivers |
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| US5493127A (en) * | 1994-12-20 | 1996-02-20 | Michigan State University | Feedback control of electrorheological fluid response |
| US20040118217A1 (en) * | 1992-04-17 | 2004-06-24 | Akira Hirano | Method of measuring fluid flow |
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2011
- 2011-04-25 CN CN2011101033418A patent/CN102253674A/en active Pending
Patent Citations (2)
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| US20040118217A1 (en) * | 1992-04-17 | 2004-06-24 | Akira Hirano | Method of measuring fluid flow |
| US5493127A (en) * | 1994-12-20 | 1996-02-20 | Michigan State University | Feedback control of electrorheological fluid response |
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| CLARK J. ETC.: "State feedback control of electrorheological fluids", 《1996 ASME INTERNATIONAL CONGRESS AND EXHIBITION》 * |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103185808A (en) * | 2012-03-30 | 2013-07-03 | 嘉兴学院 | Photoelectric technology-based bubble velocity-measuring system |
| CN103675333A (en) * | 2013-12-08 | 2014-03-26 | 中国科学院过程工程研究所 | Device and method for measuring micro-fluid velocity field in real time |
| CN103746286A (en) * | 2014-01-07 | 2014-04-23 | 高秀敏 | Adjustable and controllable dye laser based on light fluid |
| CN104064957A (en) * | 2014-05-09 | 2014-09-24 | 杭州电子科技大学 | Adjustable and controllable optical flow control dye laser based on electrorheological effect |
| CN104064957B (en) * | 2014-05-09 | 2017-04-05 | 杭州电子科技大学 | A kind of controllable optofluidic dye laser based on electric rheological effect |
| CN104698219A (en) * | 2015-03-18 | 2015-06-10 | 东南大学 | Flow two dimension velocity field measurement device and method based on near field scattering |
| CN105445492A (en) * | 2015-12-14 | 2016-03-30 | 华中科技大学 | Scattering medium-penetrating laser speckle flow speed detection method and device thereof |
| CN105445492B (en) * | 2015-12-14 | 2019-11-26 | 华中科技大学 | A kind of laser speckle current velocity testing method and device through scattering medium |
| CN106771349A (en) * | 2016-12-26 | 2017-05-31 | 浙江科聪智能科技有限公司 | Contactless water speed measurement sensor, Intelligent pipe net, the intelligent network of rivers |
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Application publication date: 20111123 |