The laser metal deposition process is a rapid manufacturing operation capable of producing functional prototypes with complex geometries and thin sections. This process inherently contains significant uncertainties and, therefore, extensive experimentation must be performed to determine suitable process parameters. An alternative is to directly control the process on-line using feedback control methodologies. In this paper, a nonlinear control strategy based on feedback linearization is created to automatically regulate the bead morphology and melt pool temperature. Extensive simulation studies are conducted to validate the control strategy.
R. G. Landers, "Process Control of Laser Metal Deposition Manufacturing -- A Simulation Study," Proceedings of the 14th Annual Solid Freeform Fabrication Symposium (2003, Austin, TX), pp. 246-253, University of Texas at Austin, Aug 2003.
14th Annual Solid Freeform Fabrication Symposium (2003: Aug. 4-6, Austin, TX)
Mechanical and Aerospace Engineering
Intelligent Systems Center
Article - Conference proceedings
06 Aug 2003