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Digital Human Model Simulation of Fatigue-Induced Movement Variability During a Repetitive Pointing Task

机译：重复指向任务期间疲劳诱导运动变异性的数字人体模型模拟

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摘要

Movement variability is an essential characteristic of human movement. It occurs in all kinds of activity including work-place tasks. However it is almost ignored in workstation design, where expected movements are highly standardized for productivity and quality considerations. Neglecting this variability may lead designers to omit parts of the future operator's movements, thus leading to incomplete assessment of biomechanical risk factors. This article describes a model-based virtual human controller intended to simulate the movement variability induced by muscle fatigue during a repetitive activity. It is built using a multibody dynamics framework and a 3-compartments muscle fatigue model. The simulation of a repetitive pointing activity is described. Our demonstrator reproduces some of the adaptive behaviors described in the literature. This demonstrator must still be validated by experimental human data, but it opens interesting perspectives for DHM software improvements and more reliable ergonomic assessments from the early stages of workstation design.
机译：运动变异性是人类运动的基本特征。它发生在各种活动，包括工作场所任务。然而，在工作站设计中几乎忽略了预期的运动，以获得高度标准化的生产率和质量考虑。忽视这种可变性可能导致设计人员省略未来的运营商运动的部分，从而导致对生物力学危险因素的不完全评估。本文介绍基于模型的虚拟人控制器，用于模拟在重复活动期间肌肉疲劳引起的运动变异性。它是使用多体动态框架和3个隔间肌肉疲劳模型建造的。描述了重复指向活动的模拟。我们的示威商再现了文献中描述的一些自适应行为。该示威者仍必须通过实验人体数据验证，但它为DHM软件改进和从工作站设计的早期阶段进行了更可靠的人体工程学评估，它开启了有趣的观点。

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