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Improvement of the assembly workstation with the use of visual management methods

Papierok Karolina, Kampa Adrian

Selected Engineering Problems

2019

nr 8

53--58

The performance of human operators and manually operated processes can be improved with the use of visual management methods. An example of improvement of assembly station is presented. Detailed analysis of the work process has identified some places, in which time losses and reduced efficiency occur. Therefore, a new project of the workstation has been developed. According to lean manufacturing principles, the visual management methods, including 5S, have been used. The detailed design of human workspace was prepared with the CAD software NX 10. The use of digital human models allows 3D visualization and can be used to improve the ergonomics of human workspace. Although, the improved assembly workstation will have much greater productivity, also training for employment is required.

Experimental identification of a mathematical model of human operator working under mental stress

Kopyt A., Zużewicz K., Bartuzi P.

Acta of Bioengineering and Biomechanics

2017

Vol. 19, no. 3

177--185

In engineering the human is considered as one of the system elements. In most studies, his/her model remains unchanged due to the external factors. The present study shows that a relation between the mental stress and human dynamics cannot be neglected. The dynamic characteristics of the operator model change due to external stimuli, i.e., mental stress. The aim of this study was to present identification of a mathematical human model and measurement methodology of the mental stress level. To determine the level of human response to external stimuli, the electrocardiography (ECG) and electromyography (EMG) methods were applied. The results showed difference in model parameters that cannot be neglected during the modeling of the human operator. The present study points to the need of developing simplified human models, taking into account external stimuli that have direct impact on his/her effectiveness. Some interdisplinary investigation provide may benefits combining part of the automation and ergonomics research areas.