Response improvement of shape memory alloy actuators? with Peltier Elements
Response improvement of shape memory alloy actuators? with Peltier Elements
复制标题
形状记忆合金执行器的响应改善？
DOI：
10.1109/icma.2008.4798822
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
T. Akashi
中科院分区：
文献类型：
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作者：
Y. Wakasa;Y. Watanabe;A. Yoshida;Kanya Tanaka;T. Akashi
形状记忆合金（SMA）致动器可以通过加热和冷却而变形。主要有两种方法用于控制SMA致动器的变形。一种是使用热控制装置，如Peltier元件。另一种是利用SMA致动器由于焦耳热而被加热的事实来加热SMA致动器。本文的目标是通过使用Peltier元件以及通过简化SMA致动器来提高SMA致动器的响应速度。首先，SMA致动器和珀耳帖元件的属性进行检查。Net，提出了一种在线控制方法，以找到适当的时间间隔加热和冷却的SMA驱动器与珀尔帖元件。所提出的方法是基于黄金分割搜索，这是一个简单而有效的优化方法。然后提出了一种预热和预冷SMA驱动器的控制方法。实验结果表明了该方法的有效性。
Shape memory alloy (SMA) actuators can be deformed by being heated up and cooled down. There are mainly two methods for controlling the deformation of the SMA actuators. The one is to use thermal control devices such as Peltier elements. The other is to electrify the SMA actuators, which utilizes the fact that they are heated up due to Joule heat. The goal of this paper is to improve the response speed of the SMA actuators by using the Peltier elements as well as by electrifying the SMA actuators. First, properties of the SMA actuators and the Peltier elements are examined. Net, an online control method is proposed to find appropriate time intervals for heating and cooling the SMA actuators with the Peltier elements. The proposed method is based on a golden section search which is a simple but efficient optimization method. Then a control method for preheating and precooling the SMA actuators is presented. The experimental results are given to show the effectiveness of the proposed method.