OpenSEA:一个3D打印的行星轮系列弹性执行器,用于符合肘部关节外骨架
Benjamin Jenks1,2, Hailey Levan1,3, Filip Stefanovic1
1Department of Biomedical Engineering, University at Buffalo, Buffalo, NY, United States.
Frontiers in robotics and AI
|March 17, 2025
概括
我们开发了一个开源的3D打印系列弹性执行器 (SEA),用于符合肘部康复外骨架. 这种负担得起的设计增强了人机交互和辅助机器人的可访问性.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 康复工程 康复工程
- 生物力学 生物力学
背景情况:
- 下一代辅助机器人需要符合人类机器人的交互,通常通过系列弹性执行器 (SEA) 实现.
- 目前的一个限制是公开可用的SEA系统的稀缺性,阻碍了辅助机器人的研究和开发.
- 这种缺陷特别影响了可负担得起和可访问的外骨架设备的开发,用于康复.
研究的目的:
- 提出并介绍一个新的,符合3D打印系列弹性执行器 (SEA) 设计.
- 为了使这个SEA设计公开可用,用于肘部运动康复外骨架.
- 解决在低成本外骨架应用中需要可访问和可适应的SEA系统的需求.
主要方法:
- 一个3D打印的SEA被设计为一个包含行星轮系统和扭矩弹的合规性和适应性.
- 在健康和中风后个体的功能性表现评估的基础上选择了以26RPM运行的4.12Nm电机.
- 该设计允许轻松调节参数,以适应不同的接头和扭矩要求.
主要成果:
- 实验测试显示,行星轮的平均合规贡献为14.80°,整个系统的平均合规贡献为22.22°.
- 有限元分析 (FEA) 显示3D打印轮的应力范围为5060.2 MPa,位移约为0.14 mm.
- 这些结果都在PLA (175 MPa) 等标准3D打印材料的操作曲极限之内.
结论:
- 一个公开可用的3D打印SEA外骨架设计已经成功展示.
- 这项工作为在康复中更容易获得和可定制的外骨设计提供了基础.
- 未来的研究将集中在联合刚性和进一步提高个性化辅助外骨架的可访问性.
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