CN104088762A - Control method with shape memory alloy line as power element - Google Patents
Control method with shape memory alloy line as power element Download PDFInfo
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- CN104088762A CN104088762A CN201410348784.7A CN201410348784A CN104088762A CN 104088762 A CN104088762 A CN 104088762A CN 201410348784 A CN201410348784 A CN 201410348784A CN 104088762 A CN104088762 A CN 104088762A
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- memory alloy
- shape memory
- alloy line
- line
- marmem line
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Abstract
The invention provides a control method with a shape memory alloy line as a power element. The shape memory alloy line is placed in a water medium or an oil medium and controls the magnitude of output current and the waveform flow of the time duration. Work efficiency of the shape memory alloy line is improved by making water or oil serve as the medium, and work of the shape memory alloy line is optimized and controlled through the method of controlling the magnitude of the output current and the waveform flow of the time duration; the service life of the shape memory alloy line is prolonged, and meanwhile the application field and the application range of the shape memory alloy line are widened.
Description
Technical field
The present invention relates to marmem line technology field, relate in particular to marmem line as the controlling method of dynamical element.
Background technique
Marmem line (SMA is its ShapeMemoryAlloy abbreviation) has had application very widely, and it more and more causes the attention of every profession and trade, as Medical Instruments, electronics, and auto parts and components, the industries such as household.His working principle is very simple: when the voltage that the two ends of memory alloy line have applied, Wires of metal alloys is heated and produces distortion, and its length will be shunk 4% left and right of short total length; When voltage is zero, its length can be got back to length originally.In fact it can be used as a kind of novel driving original paper and use, because it is lighter than traditional driving element, and the little and low price of volume, so it has had many innovation and application, as relay, latch, reflecting mirror driver etc.
When marmem line is used as driving element, the place coming with some shortcomings: 1, use under normal temperature air, its time-consuming of cooling reply after heating is long, often the several times of heating process; Particularly in the large situation of the diameter of marmem line, cooling recovery length is slower; 2, in the application of many marmem lines, need to control according to application the size of its heating-up temperature, heating time length, with and work speed; 3, marmem line is applied in repeatedly to-and-fro motion, needs to optimize and control rate.
Summary of the invention
The object of the invention is to overcome above shortcoming and defect and propose a kind of marmem line as the controlling method of dynamical element.
For reaching this object, the present invention by the following technical solutions:
Marmem line, as the controlling method of dynamical element, is placed on memory alloy line in the medium of water or oil.
Preferential, control the size of electric current output and the waveform flow of endurance.
Preferential, described marmem line is placed in the aqueous medium of conduction.
Preferential, described liquid coolant is conductive medical biochemical water.
The present invention is by utilizing water or oil to improve the working efficiency of marmem line as medium, adopt the work of controlling the size of electric current output and the method optimization control marmem line of the waveform flow of endurance; And extended the life-span of marmem line, widened application and the scope of marmem line simultaneously.
Accompanying drawing explanation
Fig. 1 is the working efficiency variation diagram of marmem line of the present invention in air dielectric.
Fig. 2 is that marmem line of the present invention is at the working efficiency variation diagram of aqueous medium.
Fig. 3 is marmem line pulse heating variation diagram of the present invention.
Embodiment
Below and by embodiment, further illustrate technological scheme of the present invention.
Embodiment 1
As shown in Figure 1 and Figure 2, on time abscissa, histogram, for the logical electrically heated stage, is the cooling stage between histogram; Ordinate changes size for adding heat size and shape memory alloy line length, and the curve in rectangle is the variation of marmem line length after heating, and the curve outside rectangle is to stop heating length change when rear marmem line is cooling to be recovered.When water can reach 10 period frequencies each second during as the working medium of marmem line, and in air dielectric, can only reach 3 period frequencies each second; Working efficiency obviously improves; And can there is not overheating failure in it in aqueous medium, because stopped the sharply rising of marmem line temperature in water; Although invade contracted length and the size that reduces a little ouput force that bubble can reduce the marmem line of a little in aqueous medium, but the time span that makes to stop to heat the cooling recovery of rear marmem line has shortened approximately 75%, thereby has greatly improved its operating rate and efficiency.When the water that uses conduction is during as working medium, do not affect yet and invade bubble marmem line energising heating work therein, for example, when using conductive medical biochemical water for medium, marmem line is still worked well.
Make water or oil make medium and can also protect the unlikely overheating failure of marmem line, the working life of elongated shape memory alloy line.In air dielectric, it is improper that the heating time of marmem line and amplitude are controlled, and is easy to make it that overheating failure occurs, and this inefficacy can not re-use original shape memory alloy line.
As shown in Figure 3: in figure, ordinate is the size of electric current output, also be to add amount of heat, in figure, abscissa is time coordinate, so the h of rectangle is highly the heating current size to the output of marmem line in figure, d on abscissa is one-period interior heating time of length, b is length cool time after heating in one-period, and T is time operation cycle.
1) h value is higher, faster to the marmem line rate of heating of same diameter, and operating rate is just accelerated, and the operation cycle can shorten.
2) the heating duration that d value can optimised shape memory alloy line, makes it just in time reach required heat, longly can affect velocity efficiency, the too short power stage that affects dynamics and the active length of marmem line.
3) b value affects the resume speed of marmem line, thereby affects operation cycle and working efficiency.
In sum, the speed of shape memory alloy line can be optimized and control to size and the waveform flow of endurance of within time operation cycle, controlling electric current output just.
Know-why of the present invention has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present invention, and can not be interpreted as by any way limiting the scope of the invention.Explanation based on herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, within these modes all will fall into protection scope of the present invention.
Claims (4)
1. marmem line, as the controlling method of dynamical element, is characterized in that: described marmem line is placed in liquid coolant.
2. marmem line according to claim 1, as the controlling method of dynamical element, is characterized in that: described liquid coolant is water or oil.
3. marmem line according to claim 2, as the controlling method of dynamical element, is characterized in that: described liquid coolant is the aqueous medium of conduction.
4. marmem line according to claim 3, as the controlling method of dynamical element, is characterized in that: described liquid coolant is conductive medical biochemical water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348784.7A CN104088762A (en) | 2014-07-21 | 2014-07-21 | Control method with shape memory alloy line as power element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410348784.7A CN104088762A (en) | 2014-07-21 | 2014-07-21 | Control method with shape memory alloy line as power element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104088762A true CN104088762A (en) | 2014-10-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410348784.7A Pending CN104088762A (en) | 2014-07-21 | 2014-07-21 | Control method with shape memory alloy line as power element |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4765139A (en) * | 1987-07-23 | 1988-08-23 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Thermocouple for heating and cooling of memory metal actuators |
| WO2009010014A1 (en) * | 2007-07-19 | 2009-01-22 | Taili Zhou | A temperature sensing generating device |
| CN101626202A (en) * | 2008-07-11 | 2010-01-13 | 杨锦堂 | Magnetostrictor actuator |
| CN102099214A (en) * | 2008-03-31 | 2011-06-15 | 通用汽车环球科技运作公司 | Methods of deploying a cover utilizing active material and an external heat source |
| CN102813563A (en) * | 2012-08-27 | 2012-12-12 | 上海交通大学 | Active and passive type intelligent simulated muscle |
-
2014
- 2014-07-21 CN CN201410348784.7A patent/CN104088762A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4765139A (en) * | 1987-07-23 | 1988-08-23 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Thermocouple for heating and cooling of memory metal actuators |
| WO2009010014A1 (en) * | 2007-07-19 | 2009-01-22 | Taili Zhou | A temperature sensing generating device |
| CN102099214A (en) * | 2008-03-31 | 2011-06-15 | 通用汽车环球科技运作公司 | Methods of deploying a cover utilizing active material and an external heat source |
| CN101626202A (en) * | 2008-07-11 | 2010-01-13 | 杨锦堂 | Magnetostrictor actuator |
| CN102813563A (en) * | 2012-08-27 | 2012-12-12 | 上海交通大学 | Active and passive type intelligent simulated muscle |
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Application publication date: 20141008 |
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| RJ01 | Rejection of invention patent application after publication |