Experimental Studies on Active Shape Control of Composite Structures using SMA Actuators
Experimental Studies on Active Shape Control of Composite Structures using SMA Actuators
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DOI：
10.1177/1045389x06055830
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发表时间：
2006-05
影响因子：
2.7
通讯作者：
Seung‐Man Yang;J. Roh;Jae-Hung Han;In Lee
中科院分区：
文献类型：
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作者：
Seung‐Man Yang;J. Roh;Jae-Hung Han;In Lee
本文介绍并讨论了形状记忆合金（SMA）丝驱动混合复合材料结构的实验建模和主动形状控制。实验测量了SMA丝的热机械性能。通过加载-卸载拉伸试验制备了带有残余应变的SMA致动器。将SMA致动器通过螺栓连接连接到石墨/环氧复合材料梁和板的表面，建立了复合材料结构。采用一阶数值模型对附加在SMA作动器上的复合材料结构的响应进行了建模。实验确定了一阶模型的参数，并与实验数据进行了比较。为了更快、更精确地控制混合复合材料结构的形状/挠度，设计了前馈和比例积分导数（PID）反馈控制器，并将其应用于混合复合材料结构。PID反馈控制器显著提高了SMA作动器的性能。
In this article, the experimental modeling and active shape control of hybrid composite structures actuated by shape memory alloy (SMA) wires are presented and discussed. The thermomechanical properties of the SMA wires are experimentally measured. SMA actuators with residual strains are prepared by loading-unloading tensile tests. Hybrid composite structures are established by attaching the SMA actuators on the surface of a graphite/epoxy composite beam and plate by bolt-joint connectors. The first-order numerical model is used to model the response of the hybrid composite structures attached to the SMA actuators. The parameters of the first-order model are experimentally determined and the response is compared with experimental data. For faster and more accurate shape/deflection control of the hybrid composite structure, feedforward and proportional integral derivative (PID) feedback controllers are designed and applied to the hybrid composite structure. The PID feedback controller significantly improves the performance of the SMA actuators.