Smart skin driving device based on shape memory effect

Abstract

The invention discloses a smart skin driving device based on shape memory effect, and belongs to the field of aviation and spaceflight. The smart skin driving device comprises a base, insulation pulleys, insulation sliding blocks and SMA (shape memory alloy) wires, the number of the insulation pulleys is at least 2, and is even integer, the insulation pulleys are arranged on one side of the base at intervals, the number of the insulation sliding blocks is corresponding to the number of the insulation pulleys, the insulation sliding blocks are arranged on the base in parallel, each insulation sliding block is connected with two SMA wires, one ends of the SMA wires are fixed on the other side of the base, corresponding to the position of the insulation pulleys, wherein the other end of any SMA wire is directly connected with the insulation sliding block, and the other end of the other SMA wire passes by the insulation pulleys to be connected with the insulation sliding block. The driving device is simple and compact in structure, capable of dual-thread driving, and can provide a stable and reliable driving force for the smart skin structure, the shape memory alloy wire material as a drive element is simple in driving conditions, safe, fast in driving response, large in driving force, small in energy consumption, energy-saving and environmentally-friendly, and free of noise and pollution.

Description

technical field [0001] The invention relates to an intelligent skin driving device, in particular to an intelligent skin driving device based on shape memory effect, which belongs to the aerospace field. Background technique [0002] As a multi-form aircraft, the morphing aircraft has good flight performance in a large airspace range, and has obtained characteristics that traditional fixed-wing aircraft do not have, and has become the basis for the breakthrough development of a new generation of aerospace vehicles. As an important part of the morphing aircraft, the morphing wing optimizes the aerodynamic performance through the change of the airfoil during flight, so as to achieve the purpose of improving flight performance and multi-task execution efficiency. Since the 1990s, many countries in the world, including the United States, Canada, Italy, France, South Korea, etc., have carried out a lot of investment and research in this field. my country's Beijing University of ...

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Problems solved by technology

Journal: Journal of Intelligent Materials Systems and Structures, 2009, Volume 20, Issue 16, Page Number: 1969–1985. It can be seen from literature reports that the current driving mechanism often has a large and complex mechanical structure, and the driving mechanism increases the weight of the skin. There are many but can not improve the strength of the skin structure, the energy consumption of the driving mechanism is high and the driving conditions are complicated, and it can only realize one-way driving and other disadvantages

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