设计和实施一个具有可变刚度的三段肌驱动连续机器人,用于在狭窄空间中的操纵
Zhixuan Weng1,2, Liansen Sha1,2, Yufei Chen1,2
1School of Biomedical Engineering (Suzhou), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230000, China.
Biomimetics (Basel, Switzerland)
|February 26, 2026
概括
本研究介绍了一种具有可变刚性的新型三段连续机器人,克服了在狭窄空间中执行精确任务的软硬悖论. 机器人实现了增强的刚性和稳定的运动,使复杂的路径穿越成为可能.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
背景情况:
- 连续机器人 (CRs) 在狭窄的空间中提供了高的合规性和适应性.
- 它们的低刚度和负载能力限制了精确的定位和稳定的支能力.
- 解决"软硬"悖论对于扩大CR应用至关重要.
研究的目的:
- 提出并实施一个三段肌驱动的可变刚度连续机器人.
- 为了提高曲一致性,运动可预测性和刚度控制.
- 为了减少多段CR的驱动器复杂性和动力学挑战.
主要方法:
- 用一个细分的恒定曲率模型进行结构优化.
- 用于细分级硬度切换的延长式平面安全气囊执行器.
- 实施了时间共享驱动策略,以分离多部门控制.
主要成果:
- 灵活模式的关节保持了几乎恒定的曲率,轨迹误差小于0.9毫米.
- 刚性模式显示硬度增加了5.77倍 (4.0N负载能力).
- 形状锁定干扰小于1.32毫米,管道路径穿越成功.
结论:
- 开发的CR系统为可变刚度和低复杂度的多段控制提供了实用和可扩展的解决方案.
- 这项研究为微创手术和工业内镜的应用提供了宝贵的见解.
- 变硬度CR有效地平衡了符合在具有挑战性的环境中精确和稳定的操作的需求.
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