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Laser Path Planning and Power Control Strategies for Powder Bed Fusion Systems



Ho Yeung, Jorge Neira, Brandon Lane, Jason Fox, Felipe F. Lopez


In laser powder bed fusion additive manufacturing process, laser scan path, velocity, and power are some of the most important parameters affecting the build quality. Control strategies for laser path and power are implemented and tested on a prototype testbed based on industrial standard G-code type programming language (referred to as AM G-code). The proposed AM G-code demonstrates different modes which define power-velocity-position profiles, and account for the laser and scanner dynamics. AM G-code is interpreted into xy2-100 protocol, and sent to the galvo scanners and laser using a custom transmitter. The actual scan path is compared with the commanded path during controlled tests. The proposed AM G-code interpreter modes are then evaluated considering the measured dynamic system response, and further discussed in contrast to commercial powder bed fusion systems.
Proceedings Title
Proceedings of the Solid Freeform Fabrication Symposium
Conference Dates
August 8-10, 2016
Conference Location
Austin, TX, US
Conference Title
Solid Freeform Fabrication Symposium


laser powder bed fusion, additive manufacturing, xy2-100, G-code, galvanometer


Yeung, H. , Neira, J. , Lane, B. , Fox, J. and Lopez, F. (2016), Laser Path Planning and Power Control Strategies for Powder Bed Fusion Systems, Proceedings of the Solid Freeform Fabrication Symposium, Austin, TX, US, [online], (Accessed May 18, 2024)


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Created August 9, 2016, Updated April 6, 2022