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  4. Development of an adaptive, self-learning control concept for an additive manufacturing process
 
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Development of an adaptive, self-learning control concept for an additive manufacturing process

Publikationstyp
Journal Article
Date Issued
2017-11
Sprache
English
Author(s)
Renken, Volker  
Albinger, Stephan  
Goch, Gert  
Neef, Arne  
Emmelmann, Claus  orcid-logo
Institut
Laser- und Anlagensystemtechnik G-2  
TORE-URI
http://hdl.handle.net/11420/3492
Journal
CIRP journal of manufacturing science and technology  
Volume
19
Start Page
57
End Page
61
Citation
CIRP Journal of Manufacturing Science and Technology (19): 57-61 (2017-11)
Publisher DOI
10.1016/j.cirpj.2017.05.002
Scopus ID
2-s2.0-85020380110
Error avoidance in high-precision manufacturing processes becomes more important for numerous state-of-the-art technologies. Selective laser melting is one of these technologies offering large potentials in the production of complex and flexible metal products. As the technology is relatively new, it is vulnerable for errors, given that the process parameters are not measured yet. A novel multilevel control concept, incorporating several sensors, has the potential to reduce errors significantly. For inner cascade control, the laser power will be adjusted by measurements with an intensity sensor for wavelengths in the visible range. This sensor is integrated into the optical path of the laser beam. An adapted self-learning strategy supports the stability of the process by updating the parameters of the used multidimensional model in order to attenuate environmental influences or shifts within the process. This work presents the concept of the control approach, first measurement results and the required relations between measurement, process and control parameters.
Subjects
Additive manufacturing
Closed-loop control
In-process monitoring
Laser beam melting
Selective laser melting
Self-learning
More Funding Information
European Community's Seventh Framework Programme under grant agreement no. FP7-285030
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