Hoffmann Errol R, Chan Alan H S
a Department of Systems Engineering and Engineering Management , City University of Hong Kong , Kowloon Tong , Hong Kong.
Ergonomics. 2015;58(9):1547-56. doi: 10.1080/00140139.2015.1022233. Epub 2015 Mar 27.
Movements with participants standing at a bench and moving loads up to 6 kg were studied, with participants using two hands to hold the load and trunk rotation in order to move the loads to specified locations. Tasks were performed with rapid ballistic movements and also with ongoing visual control. Data for ballistic movements were modelled in terms of a modified form of the (Gan, K.-C. and Hoffmann, E.R. 1988. "Geometrical conditions for ballistic and visually controlled movements." Ergonomics 5 (31): 829-839) model for ballistic movements, taking into account the inertial properties of trunk rotation. Visually-controlled movements were modelled in terms of Fitts' law and a term that allowed for the ballistic form of the first submovement of the visually-controlled movement. Practitioner Summary: Movement times to move masses up to 6 kg, for workers at a bench using trunk rotation, are given. Theoretical models fit the experimental data very well and allow prediction of movement times.
研究了参与者站在工作台旁搬运重达6公斤重物的动作，参与者双手握住重物并通过躯干旋转将重物移动到指定位置。任务以快速弹道式动作以及持续视觉控制的方式进行。弹道式动作的数据根据（Gan, K.-C.和Hoffmann, E.R. 1988年。“弹道式和视觉控制动作的几何条件。”《人类工程学》5 (31): 829 - 839）弹道式动作模型的修改形式进行建模，同时考虑了躯干旋转的惯性特性。视觉控制动作根据菲茨定律以及一个考虑视觉控制动作第一个子动作弹道形式的项进行建模。从业者总结：给出了工作台旁使用躯干旋转的工人搬运重达6公斤重物的动作时间。理论模型与实验数据拟合得非常好，并可用于预测动作时间。
