膝盖曲辅助方法用于人类外骨系统
概括
对于下肢外骨架,使用收缩元件 (CE) 的膝盖曲辅助最有效,当它跨越整个关节功率期并支持人类活跃运动时. 这种方法增强了人类的自然动作,并减少了肌肉的劳动力.
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
- 人与机器的互动 人与机器的互动
背景情况:
- 膝关节是下肢外骨架研究的一个关键焦点.
- 基于收缩元件 (CE) 的屈曲辅助在整个步行周期中的有效性仍然不清楚.
研究的目的:
- 分析有效的膝盖曲辅助方法,使用被动元件 (PE) 能量机制.
- 设计一个增强的自适应振荡器 (EAO),以无地整合人类外骨.
- 为了验证基于CE的膝盖曲支的特定辅助配置文件的必要性.
主要方法:
- 分析PE能量储存和释放,以获得最佳的援助时间.
- 开发一个EAO,通过离散里埃变换 (DFT) 和有限状态机器 (FSM) 结合基本频率估计.
- 使用电肌图 (EMG) 和代谢指标进行实验验证,以评估辅助的有效性.
主要成果:
- 基于CE的膝盖曲辅助最有效的是与整个关节功率期保持一致,而不仅仅是负功率阶段.
- 在辅助过程中确保人类的活跃运动显著减少了对抗性肌肉激活.
- 拟议的EAO与DFT和FSM增强了系统的稳定性和实用性.
结论:
- 有效的基于CE的膝盖屈曲辅助需要与整个关节动力循环同步,并支持活跃的人类运动.
- 该EAO提供了一个强大的方法,以整合人类的意图与外骨架的协助.
- 这些发现有助于设计更自然,更高效的下肢辅助设备.
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