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Cognitive workload and fatigue in a human-robot collaborative assembly workstation: A pilot study

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Industry 5.0 represents a novel approach that builds upon the advancements of Industry 4.0 and is aimed at fostering a more harmonious relationship between humans and machines to prioritize resource efficiency and user-centered manufacturing.Objective: This paper presents a study, integrated in the COBOSHe project, for assessing and analyzing the cognitive workload and fatigue, using heart rate (HR) and a perceived scale related to fatigue, in a car engine assembly in which a robot and ahuman operator are performing tasks in a shared workspace. For this purpose, a sample of 30 subjects were divided into two groups, with group A having read the assembly instructions before the usage of the assembly workstation and group B without having any previous knowledge about the car engine. The data analysis was carried out using descriptive and inferential statistics (Kruskal-Wallis’s test and Spearman's correlation test) in the IBM SPSS Statistics software, version 28.0. The results showed thatHRand perceived fatigue didn’t had statistical differences between groups(p=0.380). There is insufficient statistical evidence, to state that the subscales of SOFI are not identical between the two groups(p >0.05). Therefore, we conclude that the usage of the augmented reality system in the assembly workstation for providing on demand instructions was intuitive and allowed the operators to learn how to assemble the car engine without requiring any previous knowledge about the assembly process. This type of study allows to improve collaborative workstations, as it increases the efficiency and productivity of production lines.

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Mental workload Industry 5.0 Assembly work Human-robot interaction

Citation

Santos, J., Ferraz, M., Pinto, A., Rocha, L., Costa, C., Simões, A., Bombeke, K., & Vaz, M. (2023). Cognitive workload and fatigue in a human-robot collaborative assembly workstation: A pilot study. Em P. Arezes, J. S. Baptista, R. Melo, M. Barroso, J. C. Branco, P. Carneiro, A. Colim, N. Costa, S. Costa, J. Duarte, J. Guedes, & G. Perestrelo, Eds.; Vol. 1, pp. 327–334). Sociedade Portuguesa de Segurança e Higiene Ocupacionais(SPOSHO). https://doi.org/10.24840/978-989-54863-4-2_0327-0334

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Sociedade Portuguesa de Segurança e Higiene Ocupacionais(SPOSHO)

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