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首页> 外文期刊>Journal of intelligent material systems and structures >Experimental Studies on Active Shape Control of Composite Structures using SMA Actuators
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Experimental Studies on Active Shape Control of Composite Structures using SMA Actuators

机译：SMA作动器主动控制复合结构形状的实验研究。

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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.
机译：本文介绍并讨论了形状记忆合金（SMA）线驱动的混合复合结构的实验建模和主动形状控制。 SMA线的热机械性能是通过实验测量的。带有残余应变的SMA执行器是通过加载/卸载拉伸测试制备的。通过使用螺栓连接连接器将SMA执行器连接到石墨/环氧复合梁和板的表面上，可以建立混合复合结构。一阶数值模型用于对连接到SMA执行器的混合复合结构的响应进行建模。通过实验确定一阶模型的参数，并将响应与实验数据进行比较。为了更快，更准确地控制混合复合结构的形状/变形，设计了前馈和比例积分微分（PID）反馈控制器并将其应用于混合复合结构。 PID反馈控制器显着提高了SMA执行器的性能。

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