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Experimental considerations on fabrication of smart actuator for vibration control using Shape Memory Alloy (SMA)

机译：用形状记忆合金制造智能执行器的智能执行器的实验考虑因素（SMA）

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Despite its great potentials, having a large displacement and force compared to traditional electro-hydraulic servo mechanical actuators or to PZT actuators, there are not so many studies on SMA 'active' actuator. The main reasons are considered as following; (1) SMA has transformation only in one direction, (2) the response is quite slow, and (3) vibration control requires punctual thermo control in real time. In the study at our laboratory, the vibration can be clearly separated into different modes by distributed cluster system. SMA actuators are, then, proposed to use with PZT actuators for control of low and high frequency modes, respectively, to realize all-round actuation. The purpose of this paper is to realize SMA 'active' actuator for low frequency modes. First of all, actuators using SMA wires, partly embedded in CFRP, were fabricated in consideration of SMA/FRP interfacial strength. Their thermo-mechanical behavior had been studied with cooling system. These lightweight actuators were placed on beam structure made of CFRP. Recovery force of beam structure itself was used as reactive force against force generated by SMA. As a result, actuator which is favorable for low frequency vibration modes control, i.e. having a large displacement and a large force, was obtained.
机译：尽管它的潜力很大，相比传统的电液伺服机械致动器或压电致动具有大排量和动力，目前还没有关于SMA“主动”执行这么多的研究。主要的原因被认为是如下; （1）具有SMA转化仅在一个方向，（2）的反应是相当缓慢的，和（3）的振动控制需要实时准时热控制。在我们的实验室研究中，振动可明显地分为分布式集群系统不同的模式。 SMA致动器，然后，提出了具有PZT致动器为低频和高频模式，分别控制来使用，以实现全轮驱动。本文的目的是实现用于低频率模式SMA“活跃”致动器。首先，使用SMA丝，部分地嵌入在碳纤维复合材料的致动器，是在考虑SMA / FRP界面强度制造。它们的热机械性能进行了研究与冷却系统。这些轻型致动器被放置在由CFRP制成的梁结构。梁结构本身的恢复力用作针对由SMA产生的力的反作用力。其结果是，致动器是用于低频振动模式控制有利的，即具有大的位移和大的力，获得。

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