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Active Shape Control of Composite Beam Using Shape Memory Alloy Actuators  

Yang, Seung-Man (한국과학기술원 기계공학과 항공우주공학전공 대학원)
Roh, Jin-Ho (한국과학기술원 기계공학과 항공우주공학전공 대학원)
Han, Jae-Hung (한국과학기술원 기계공학과 항공우주공학전공)
Lee, In (한국과학기술원 기계공학과 항공우주공학전공)
Publication Information
Composites Research / v.17, no.4, 2004 , pp. 18-24 More about this Journal
Abstract
In this paper, active shape control of composite structures actuated by shape memory alloy (SMA) wires is presented. The thermo-mechanical behaviors of SMA wires were experimentally measured. Hybrid composite structures were established by attaching SMA actuators on the surfaces of graphite/epoxy composite beams using bolt-joint connectors. SMA actuators were activated by phase transformation, which induced by temperature rising over austenite finish temperature. In this paper, electrical resistive heating was applied to the hybrid composite structures to activate the SMA actuators. For (aster and more accurate shape/deflection control of the hybrid composite structure, PID feedback controller was designed from numerical simulations and experimentally applied to the SMA actuators.
Keywords
composite structure; graphite/epoxy; active shape control; shape memory alloy; proportional-integral-derivative controller;
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