为动态上空工作优化被动外骨扭矩:对肌肉活动和感知到的炼的阶段特定分析
Giulia Casu1, Alan Barr2, Sunwook Kim3
1Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, Cagliari, Italy.
概括
支手臂外骨架 (ASE) 在上空任务时减少肩膀肌肉的紧张. 最佳扭矩水平 (75%) 在上升过程中减少肌肉活动和疲劳,同时在下降过程中最大限度地减少对手活动.
科学领域:
- 生物力学 生物力学
- 人与机器人的交互
- 职业健康 职业健康 职业健康 职业健康
背景情况:
- 空头任务带来了重大的人体工程学挑战,导致肌肉疲劳和潜在的伤害.
- 被动扶手外骨架 (ASE) 旨在通过提供外部扭矩来减轻这些挑战.
- 了解ASE的最佳扭矩水平对于有效的人体工程学支持至关重要.
研究的目的:
- 为了研究不同的被动扶手外骨 (ASE) 扭矩水平对上肢肌肉活动的影响.
- 评估ASE扭矩对在动态上空 (DO) 任务中感知到的劳动和疲劳的影响.
- 为了确定用户在模拟钻井任务期间对ASE扭矩水平的偏好.
主要方法:
- 20名参与者在四个条件下执行了20个周期的动态上空 (DO) 钻井任务:没有ASE,ASE扭矩在50%,75%和100%的支持下.
- 表面电肌图 (sEMG) 用于双边测量六个肩膀肌肉的活动.
- 参与者报告了对感知劳动力 (RPE) 和肩部疲劳的主观评分,以及扭矩偏好.
主要成果:
- 在手臂上升阶段,增加ASE扭矩显著降低了高达47%的肩膀激动肌肉活动.
- 在上升阶段,更高的扭矩水平导致感知力度 (RPE) 和疲劳显著下降.
- 相反,高扭矩水平在臂下降阶段增加了对手肌肉活动.
结论:
- 75%和100%的ASE扭矩水平被参与者评价为最有利的.
- 建议将75%的扭矩设置作为有效的支水平,在上升过程中平衡起伏器活动的减少,并在下降过程中最小化对手活动.
- 在上空任务中,ASE显示出降低肌肉骨负荷的潜力,但需要仔细校准以优化不同运动阶段的性能.
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