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Proceedings Paper

A SMA-based redundant actuation locking device for rotary feed structure using self-locking principle
Author(s): Xiaoyu Qin; Xiaojun Yan; Xiaoyong Zhang; Dianyin Hu; Weibing Wang; Lianghai Li
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Paper Abstract

This paper presents a locking device which achieves in locking the rotary feed structure of a space-borne microwave radiometer during the launch stage. This locking device employs two shape memory alloy (SMA) wires as the actuating elements, and uses a self-locking structure to achieve the locking function. To improve the performance and reliability, a redundant SMA wire and a step structure are employed. To validate the proposed SMA locking device, four prototypes were fabricated and tested. The result shows that the locking device possesses the advantages of remarkable locking performances, wide operation electric current and high survival temperature. Based on the test results, the locking device has a great potential for the application of space rotary structures.

Paper Details

Date Published: 20 April 2016
PDF: 7 pages
Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98033C (20 April 2016); doi: 10.1117/12.2218355
Show Author Affiliations
Xiaoyu Qin, BeiHang Univ. (China)
Xiaojun Yan, BeiHang Univ. (China)
Collaborative Innovation Ctr. of Advanced Aero-Engine (China)
National Key Lab. of Science and Technology on Aero-Engine Aero-thermodynamics (China)
Xiaoyong Zhang, BeiHang Univ. (China)
Collaborative Innovation Ctr. of Advanced Aero-Engine (China)
National Key Lab. of Science and Technology on Aero-Engine Aero-thermodynamics (China)
Dianyin Hu, BeiHang Univ. (China)
Collaborative Innovation Ctr. of Advanced Aero-Engine (China)
National Key Lab. of Science and Technology on Aero-Engine Aero-thermodynamics (China)
Weibing Wang, Beijing Research Institute of Telemetry (China)
Lianghai Li, Beijing Research Institute of Telemetry (China)


Published in SPIE Proceedings Vol. 9803:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016
Jerome P. Lynch, Editor(s)

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