Working Life Department, Physiology - Movement - Work Laboratory, INRS (Institut National de Recherche et de Sécurité), 1 rue du Morvan, CS 60027, F-54519, Vandœuvre cedex, France.
Working Life Department, Physiology - Movement - Work Laboratory, INRS (Institut National de Recherche et de Sécurité), 1 rue du Morvan, CS 60027, F-54519, Vandœuvre cedex, France.
Appl Ergon. 2020 Jul;86:103081. doi: 10.1016/j.apergo.2020.103081. Epub 2020 Mar 10.
Current industrial production systems allow assembly of customised products which include additional elements distinguishing them from a reference model. This customisation can result in significant additional time constraints which compel workers to complete their tasks faster, which may pose problems for older workers. The objective of this laboratory study was to investigate the impact of restrictive or flexible pacing during assembly of customised products among groups of younger and older participants. The data gathered were used to analyse cycle-time, assembly performance, muscular load, and kinematic adaptations. The flexible pacing condition was found to improve production performance, increasing customised assembly cycle-time and reducing biomechanical load, for both young and older participants. However, as the task required fine manual dexterity, older participants were subjected to a higher biomechanical load, even in the flexible pacing scenario. These results should encourage assembly-line designers to allow flexible time constraints as much as possible and to be particularly attentive to the needs of older workers.
当前的工业生产系统允许组装定制产品，这些产品包括与参考模型区分开来的附加元素。这种定制可能会导致显著的额外时间限制，迫使工人更快地完成任务，这可能会对老年工人造成问题。本实验室研究的目的是调查在定制产品组装过程中，对年轻和年老参与者群体进行限制或灵活的定时安排的影响。收集的数据用于分析周期时间、组装性能、肌肉负荷和运动学适应性。发现灵活的定时安排条件可以提高生产性能，增加定制组装的周期时间，减少生物力学负荷，对年轻和年老的参与者都是如此。然而，由于任务需要精细的手动灵活性，即使在灵活的定时安排场景中，年老的参与者也会承受更高的生物力学负荷。这些结果应该鼓励装配线设计师尽可能允许灵活的时间限制，并特别关注老年工人的需求。
