矩形平面介电弹性体执行器的多模态共振及其在具有软毛皮的机器人中的应用
Yangyang Du1,2, Xiaojun Wu1, Dan Wang1
1School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology, Xi'an 710049, China.
Biomimetics (Basel, Switzerland)
|August 28, 2024
概括
软机器人利用介电弹性体执行器 (DEA) 中的多式共振来增强功能. 这项研究揭示了由多式共振驱动的新型旋转运动,实现比传统方法更高的速度.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
背景情况:
- 软机器人通常使用介电弹性体执行器 (DEA) 来提供动力,灵感来自昆虫的飞行效率.
- 第一阶模态共振通常用于DEA的最佳性能.
- DEA可以表现出多模式共振,使得中的声音生成等功能成为可能.
研究的目的:
- 为了研究一个具有中心质量偏差的矩形平面DEA (RPDEA) 的多式共振.
- 描述不同振动模式 (垂直,旋转) 对应于不同的共振顺序.
- 探索多式共振在新型机器人运动中的潜力.
主要方法:
- 在不同预伸缩条件下对RPDEA行为进行实验分析.
- 有限元模型 (FEM) 模拟和分析共振现象.
- 调查不同共振次序的超,和亚响应.
主要成果:
- 第一阶段的共振导致垂直振动,第二阶段的长轴旋转,第三阶段的短轴旋转.
- 普雷斯特雷奇影响了共振顺序,抑制了第三顺序,同时提升了第一和第二顺序的频率.
- 响应频率和振幅可以通过直流和交流激发振幅调节.
结论:
- 在RPDEA中的多模共振可以实现多种振动模式,包括旋转.
- 旋转振动为软机器人运动提供了一种新的方法,比线性振动显示出更高的速度.
- 调整激发信号幅度为先进软机器人应用程序提供了一种控制共振特征的方法.
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