Melt Pool Temperature Modeling and Control for Laser Metal Deposition Processes
Abstract
Melt pool temperature is of great importance to deposition quality in laser metal deposition processes. To control the melt pool temperature, an empirical process model describing the relation between the temperature and laser power, powder flow rate, and traverse speed is established and verified experimentally. A general tracking controller using the Internal Model Principle is then designed. To examine the controller performance, two experiments tracking a constant temperature reference and a time varying reference are conducted. The results are compared to open-loop experiments where the laser power profile is derived directly from the model. The results show the melt pool temperature controller performs well in tracking both constant and time varying references and that the closed-loop control system greatly reduces the tracking errors.
Recommended Citation
L. Tang and R. G. Landers, "Melt Pool Temperature Modeling and Control for Laser Metal Deposition Processes," Proceedings of the 2009 American Control Conference (2009, St. Louis, MO), Institute of Electrical and Electronics Engineers (IEEE), Jun 2009.
The definitive version is available at https://doi.org/10.1109/ACC.2009.5160415
Meeting Name
2009 American Control Conference (2009: Jun. 10-12, St. Louis, MO)
Department(s)
Mechanical and Aerospace Engineering
Keywords and Phrases
Closed Loop Systems; Control System Synthesis; Lasers; Manufacturing Processes; Time-Varying Systems
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2009 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.
Publication Date
12 Jun 2009
