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

Autor:	Jiacheng Zhang, Yiqun Zhang, Yongxi He, Dongwu Yang, Zihan Sun, Jichuan Xiong, Jianli Yang
Rok vydání:	2023
Předmět:	Mechanics of Materials Signal Processing General Materials Science Electrical and Electronic Engineering Condensed Matter Physics Atomic and Molecular Physics and Optics Civil and Structural Engineering
Zdroj:	Smart Materials and Structures. 32:035002
ISSN:	1361-665X 0964-1726
DOI:	10.1088/1361-665x/acb306
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7f9bebe95116f4516b7afcc1b1daeb46 https://doi.org/10.1088/1361-665x/acb306 Zobrazit plný text záznamu