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相关概念视频

Knee Joint01:23

Knee Joint

2.0K
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris...
2.0K
Muscles that Move the Leg01:23

Muscles that Move the Leg

2.1K
The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed...
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Training Persons with Spinal Cord Injury to Ambulate Using a Powered Exoskeleton
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膝盖曲辅助方法用于人类外骨系统

Zhipeng Wang, Chifu Yang, Shengping Zhang

    IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society
    |June 20, 2023
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    概括
    此摘要是机器生成的。

    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.

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    Last Updated: Jul 26, 2025

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    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.