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首页> 外文会议>IEEE International Conference on Mechatronics and Automation; 20060625-28; Luouang(CN) >Initial Research on Development of a Flexible Pectoral Fin Using Shape Memory Alloy
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Initial Research on Development of a Flexible Pectoral Fin Using Shape Memory Alloy

机译：利用形状记忆合金开发柔性胸鳍的初步研究

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摘要

Crucians propel themselves through the water primarily either with their body and tail (axial-based locomotion) at high swimming speed or with their greatly expanded pectoral fins (pectoral-fin-based locomotion) at low swimming speed. They also use their pectoral fins to adjust stability in still motion. In this paper, we present recent experimental research on pectoral fin structure, fin locomotion, Meanwhile consider a design of pectoral fin actuator based on shape memory alloy (SMA) composites composed of a couple of plates with the opposite functions. Both SMA plates, whose microstructure is either martensite or austenite, are individually arranged in parallel and operated as a bias to each other mimicking the morphological and kinematic characters of pectoral fin of crucian. We also use strain gauge sensors for deformation control. Finally an examination was carried out to test the relationship between the tip displacement of SMA plate and the output voltage signal of strain gauge as well as the relationship between Pulse Width Modulate(PWM) and bending angle(θ). The results give us a confidence on the possibility of imitating pectoral fin locomotion using shape memory alloy.
机译：鱼主要在高游泳速度时以其身体和尾巴（基于轴向的运动）或在低游泳速度时以其极大地扩展的胸鳍（基于胸鳍的运动）在水中推进。他们还使用胸鳍调节静止运动的稳定性。在本文中，我们介绍了最近的关于胸鳍结构，鳍运动的实验研究，同时考虑了一种基于形状记忆合金（SMA）复合材料的胸鳍致动器的设计，SMA复合材料由一对具有相反功能的板组成。两种SMA板的微观结构均为马氏体或奥氏体，分别平行排列并相互偏置，以模仿cru的胸鳍的形态和运动学特征。我们还使用应变片传感器进行变形控制。最后检查了SMA板尖端位移与应变仪输出电压信号之间的关系，以及脉宽调制（PWM）与弯曲角度（θ）之间的关系。结果使我们对使用形状记忆合金模仿胸鳍运动的可能性充满信心。

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