Active adjustment of space-borne cable-net antenna via a two-way shape memory alloy spring

Author:

Zhang Jiacheng,Zhang YiqunORCID,He Yongxi,Yang Dongwu,Sun Zihan,Xiong Jichuan,Yang Jianli

Abstract

Abstract In extreme space environments with alternating and uneven temperature variations, the surface accuracy of cable-net antennas deteriorates significantly, thereby inducing a periodic failure or a significant deviation in the electrical performance. This is because of the lack of effective methods for controlling the surface shape during the service of the cable-net antenna. In this study, a method based on ‘two-way memory spring’ is proposed to actively control the surface of a cable-net antenna. Herein, first, an electro-thermo-mechanical model of the shape memory alloy (SMA) spring is deduced by combining the intrinsic model of the two-way shape memory effect and the resistance property of the SMA. Subsequently, a principle prototype is developed, and experiments related to active control are conducted to confirm the feasibility and effectiveness of the proposed method.

Funder

National Natural Science Foundation of China

Fundamental Research Funds for the Central Universities

Natural Science Basic Research Program of Shaanxi

Publisher

IOP Publishing

Subject

Electrical and Electronic Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics,Civil and Structural Engineering,Signal Processing

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