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首页> 外文期刊>Theoretical Issues in Ergonomics Science >Evaluation of physical workload during work behavior for work environment design from biomechanical perspective: a case study in initial orientation selection of work object for manual handling tasks
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Evaluation of physical workload during work behavior for work environment design from biomechanical perspective: a case study in initial orientation selection of work object for manual handling tasks

机译：从生物力学视角下工作环境设计工作行为期间物理工作量的评估 - 用于手动处理任务的初始方向选择的初探选择

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摘要

To improve workability, designing the work environment by consideringphysical workload can be effective. This paper proposes a new quantitativeevaluation method of physical workload during work behavior,which uses quaternion and joint torque ratio. As an indicator of physicalworkload, the proposed method calculated a dimensionless valuebased on joint rotation angle, joint rotation axis angle, and joint torqueratio. Joint rotation angle and joint rotation axis angle are angle changesin the joint and its rotational axis from those in the previous sampling,respectively. These angles were calculated using quaternions. Jointtorque ratio was calculated using a three-dimensional rigid link modelthat simulates the human body. The applicability of the proposedmethod was examined in several conditions of manual handling tasksset by varying the initial pose of the work object. In the experiments,posture and electromyogram (EMG) of the upper limb were measured.The results showed that the proposed method can evaluate workabilityof initial orientation of work objects on biomechanical perspective,whereas EMG could not.
机译：通过考虑提高可加工性，设计工作环境物理工作量可以有效。本文提出了一种新的定量工作行为期间物理工作量的评估方法，使用四元数和联合扭矩比率。作为物理的指标工作负载，所提出的方法计算了无量纲值基于关节旋转角度，关节旋转轴角和关节扭矩比率。关节旋转角度和关节旋转轴角是角度变化在接头及其旋转轴上，从先前的采样中的那些，分别。使用四元数计算这些角度。联合的使用三维刚性连杆模型计算扭矩比这模拟了人体。建议的适用性在手动处理任务的若干条件下检查了方法通过改变工作对象的初始姿势来设置。在实验中，测量上肢的姿势和肌电图（EMG）。结果表明，该方法可以评估可加工性生物力学视角下工作对象的初始定位，而EMG不能。

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