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- Cognitive workload and fatigue in a human-robot collaborative assembly workstation: A pilot studyPublication . Santos, Joana; Ferraz, Mariana; Pinto, Ana; Rocha, Luís Freitas; Costa, Carlos M.; Simões, Ana Correia; Bombeke, Klass; Vaz, MárioIndustry 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.
- Acceptance of industrial collaborative robots: Preliminar results of appliction of portuguese version of the Frankenstein Syndrome Questionnaire (FSQ)Publication . Pinto, Ana; Ferraz, Mariana; Nomura, Tatsuya; Santos, JoanaCobots are highly flexible and able to operate in the same workspace and at the same time with the worker. The use of these technologies allows for increased production performance while ensuring comfort and confidence for the worker. Robot acceptance is still a controversial topic with various approaches and methods to measure acceptance of humanoid robots. This study aimed to evaluate cobots acceptance after a motor assembly task in a collaborative workstation. 30 university students were divided into two groups, with group 1 having read the assembly instructions before the usage of the assembly workstation and group 2 without having any previous knowledge about the car engine. All participants completed the Portuguese version of the Frankenstein Syndrome Questionnaire (FSQ). Data analyses were carried out using descriptive and inferential statistics using IBM SPSS Statistics software, version 28.0. One correlations was found between the scales of the FSQ (p < 0.05). It was possible to conclude that the acceptance of robots by the participants in group 1 and group 2 was the same. This study can contribute to understanding which factors explain the acceptance of collaborative robots, to improve human-robot intercation.