BILAYER THERMOMAGNETIC ACTUATOR
The invention relates to a bistable bilayer thermomagnetic actuator meant to drive or control a mechanism or a system by carrying out a motion, a gripping or fastening, wherein the position may be thermally and magnetically controlled. According to the invention, the actuator comprises a bilayer sys...
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Zusammenfassung: | The invention relates to a bistable bilayer thermomagnetic actuator meant to drive or control a mechanism or a system by carrying out a motion, a gripping or fastening, wherein the position may be thermally and magnetically controlled. According to the invention, the actuator comprises a bilayer system consisting of a resistor element (1) made of a shape-memory alloy and an element (2) with ferromagnetic properties, which, in normal position, rests on a magnet (3) mounted on a common support (4), thermally and electrically insulated in relation to the resistor element and the element with ferromagnetic properties (1 and 2), respectively, by means of a piece (5) for insulation in case of heating above the Curie point and the loss of the magnetic properties of the element (2) with ferromagnetic properties (2), the resistor element (1) recovering its original shape, and upon cooling below the Curie point, the resistor element relatively quickly recovering its original shape.
Invenţia se referă la un actuator bistrat termomagnetic, bistabil, destinat acţionării sau comenzii unui mecanism sau sistem, prin realizarea unei mişcări a unei prinderi sau a unei fixări la care poziţia poate fi controlată termic şi magnetic. Actuatorul conform invenţiei este constituit dintr-un sistem bistrat, compus dintr-un element (1) rezistor, realizat dintr-un aliaj cu memorie a formei, şi un element (2) cu proprietăţi feromagnetice, care, în poziţie normală, se sprijină pe un magnet (3) montat pe un suport (4) comun, izolat termic şi electric faţă de elementele (1 şi 2) rezistor, şi, respectiv, cu proprietăţi feromagnetice printr-o piesă (5) de izolare la încălzire deasupra punctului Curie, şi pierderea proprietăţilor magnetice ale elementului (2) cu proprietăţi feromagnetice, elementul (1) rezistor recuperându-şi forma, iar la răcire sub temperatura Curie recuperându-şi relativ repede forma iniţială. |
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