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膝盖的被动曲在一步一步的过渡过程中增加了后腿的前进冲动
Bernadett Kiss1, Alexandra Buchmann2, Daniel Renjewski2
1Max Planck Institute for Intelligent Systems, Stuttgart, 70569, Germany. kiss@is.mpg.de.
Scientific reports
|April 15, 2025
概括
这项关于机器人行走的研究发现,被动地启动膝盖曲,而不是积极地,显著增加了前进的动量. 这种被动方法可以提高机器人和辅助设备的效率.
科学领域:
- 生物力学 生物力学
- 机器人技术 机器人技术 机器人技术
- 人类的机动运动
背景情况:
- 人类行走涉及到活跃肌肉控制和与地面相互作用的被动腿部结构之间的复杂协调.
- 脚的"弹射机制",利用阿基里斯肌的弹性,对于行走时有效的前进推进至关重要.
- 脚触地后的被动膝盖曲可能有助于弹射器释放机制,影响步态动态.
研究的目的:
- 用双脚机器人研究被动与主动膝盖曲启动对步态力学的影响.
- 量化不同膝盖曲策略对行走过程中的动量和动能变化的影响.
- 探索步行事件中计时的作用,以优化运动效率.
主要方法:
- 使用双脚EcoWalker-2机器人,具有被动脚,以比较被动和主动的膝盖曲启动.
- 采用精确的机器人测量来分析步态事件,动量和动能.
- 通过这两种启动方法评估机器人保持脚距和稳定性的能力.
主要成果:
- 与主动启动相比,被动膝盖曲启动延迟了脚脚下曲的3%的步行周期.
- 被动启动导致后腿水平动量增加了87%.
- 在一步到步的过渡过程中,质量运动量向量的增加中心的大小在被动膝盖曲时是188%大.
结论:
- 被动膝盖曲启动在释放"弹射机制"和步行事件定时方面发挥着重要作用.
- 这种被动策略增强了水平的动力增长,可能提高了整体的机动效率.
- 研究结果支持在具有被动脚的人形机器人和下肢辅助设备中使用被动膝盖曲,以减少控制力度和硬件复杂性.
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