scholarly journals Optimal Control of Industrial Assembly Lines

Author(s):  
Francesco Liberati ◽  
Andrea Tortorelli ◽  
Cesar Mazquiaran ◽  
Muhammad Imran ◽  
Martina Panfili
2014 ◽  
Vol 8 (1) ◽  
pp. 91-96 ◽  
Author(s):  
László Gogolák ◽  
Igor Fürstner ◽  
Szilveszter Pletl

The use of wireless devices has greatly increased in the last decade, and it has been one of the most widely used medium of information transmission. Within the wireless devices the wireless sensor networks are the most contemporary and most commonly researched field. The work deals with the industrial use of wireless sensor networks and more precisely with monitoring and controlling industrial assembly lines. The focus of this study is localization by the use of wireless technology in the above mentioned environment. In the experiment wireless sensors are placed on the base elements of currently being assembled products. The developed system is able to specify the precise place of the product in the assembly line and record the time of localization. By the use these information the time of assembling the product can be monitored. For determining the place of the product the Received signal strength indication – RSSI has been used. The current position of the product is calculated by a neural network. The use of these sensors makes possible the measuring and recording of the influences on the product during the assembly, such as the effects of temperature, humidity, or if the product has been hit or damaged. By the use of these wireless sensor networks the quality of the assembled products can be improved and the process of assembly can be optimized.


2000 ◽  
Vol 44 (30) ◽  
pp. 5-606-5-606
Author(s):  
Carolina Chaves ◽  
Joana Rodrigues ◽  
José Carvalhais ◽  
Anabela Simões

Typical industrial assembly lines with repetitive work have increasing rates of musculoskeletal disorders. Work organization centered on small lines and providing a larger set of tasks by operator is a possible solution to prevent this problem. The aim of this study was the ergonomic evaluation of two small radio assembly lines compared with the traditional one. The results are very promising for the new line models.


Author(s):  
Joana Santos ◽  
Ana Betty Abreu ◽  
Pedro Fonseca ◽  
Carlos Carvalhais ◽  
J. Santos Baptista ◽  
...  

Automation of assembly work was originally developed to increase operation efficiency and to reduce workload. However, a considerable number of unanticipated ergonomic problems have been observed such as the interaction between humans and automated systems. The aims of this study were to quantify joint angle positions (shoulder, elbow and wrist) of workers in two assembly lines with different mechanization levels and analyse the performance of an inertial motion capture system. Seven experienced female assemblers participated in this study. The measurements were performed in the workplace with a full-body inertial measurement system (Xsens MVN BIOMECH system). Maximum cross-correlation between angle-time courses was calculated to quantify the waveform similarities. In manual line, there are larger variations of joint angles than in the semi-automatic one. The analysis of cross correlation coefficients revealed that electromagnetic interferences are potential limitations to the use of these systems under field conditions.


2021 ◽  
Author(s):  
Veronique Georlette ◽  
Juan Sanchez Melgarejo ◽  
Sebastien Bette ◽  
Nicolas Point ◽  
Veronique Moeyaert

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