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Actuator Placement for a Bio-Inspired Bone-Joint System Based on SMA

机译:基于SMA的生物启发式骨关节系统的执行器放置

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摘要

This paper presents an actuator placement study for a bio-inspired joint that is part of a smart-materials-based bat wing. The wing has been designed as part of the BATMAV project with the final goal of developing a biologically-inspired micro-air vehicle with foldable wings for flapping flight. The wing uses superelastic Shape Memory Alloy (SMA) joints and SMA muscle wire actuation. A kinematic model for the bat's flapping flight motion has been developed in a previous paper, while the current paper presents a study to determine attachment points for SMA actuator wires. At the center of the current analysis is the requirement to maintain compatibility with a typical SMA's strain capabilities while simultaneously ensuring the required joint angle motion to be achieved. The study yields a range of attachment parameters, which result in contraction strains of up to 2.5%, appropriate for high-cycle actuation.
机译:本文介绍了一个基于生物启发的关节的执行器放置研究,该关节是基于智能材料的蝙蝠翼的一部分。该机翼被设计为BATMAV项目的一部分,其最终目标是开发一种具有生物启发性的微型飞机,该飞机带有可折叠的机翼,用于扑翼飞行。机翼使用超弹性形状记忆合金(SMA)接头和SMA肌肉线驱动器。在先前的论文中已经开发了蝙蝠拍打飞行运动的运动学模型,而当前的论文提出了确定SMA执行器导线附接点的研究。当前分析的核心是保持与典型SMA应变能力的兼容性,同时确保实现所需的关节角度运动的要求。这项研究得出了一系列的附着参数,这些参数可导致高达2.5%的收缩应变,适用于高循环驱动。

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