多体模型与脚变形方法用于估计在水平行走期间的地面反应力和时刻以及联合扭矩,通过没有优化技术的光学运动捕捉来进行水平行走
Naoto Haraguchi1, Kazunori Hase1
1Department of Mechanical Systems Engineering, Tokyo Metropolitan University, Tokyo 191-0065, Japan.
Sensors (Basel, Switzerland)
|May 11, 2024
概括
这项研究引入了一种新的光学运动捕获方法,以高效地估计地面反应力和时刻. 该技术避免了漫长的计算,为临床使用提供了实用的生物力学分析.
科学领域:
- 生物力学 生物力学
- 运动分析 运动分析
- 人类运动科学科学 人类运动科学
背景情况:
- 传统的生物机械模型用于估计地面反应力 (GRF) 和地面反应时刻 (GRM),由于优化过程,通常需要大量的计算时间.
- 现有的方法也可能依赖于训练数据或特定的步态假设,限制其一般适用性.
研究的目的:
- 开发一种基于光学运动捕捉 (OMC) 的新方法来估计GRF,GRM和联合扭矩.
- 为了克服与传统生物力学建模方法相关的漫长计算时间的挑战.
主要方法:
- 开发了一种新的基于OMC的方法,利用多体模型来根据脚变形在脚之间分配外部力.
- 这种方法可以在不使用优化技术的情况下预测GRF和GRM,从而减少计算负载.
- 该方法在平行行走过程中通过将其估计值与力板测量结果进行比较来验证.
主要成果:
- 拟议的基于OMC的方法显示了与力板数据相比,所有估计的GRF,GRM和下肢关节扭矩的良好或强相关性.
- 在平行行走过程中,预测准确度得到了确认,验证了该方法的有效性.
- 与传统的基于优化的方法相比,这种方法显著减少了计算时间.
结论:
- 开发的基于OMC的方法为估计GRF,GRM和联合扭矩提供了实用且计算效率高的解决方案.
- 这种技术促进了快速的生物力学分析和反,提高了其在临床环境中的实用性.
- 低计算成本和高精度使这种方法成为生物力学研究和临床应用的宝贵工具.
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