Implementation of Advanced Laser Control Strategies for Powder Bed Fusion Systems
Ho Yeung, Brandon M. Lane, M A. Donmez, Jason C. Fox, Jorge E. Neira
Laser path, scan speed, and laser power are critical machine parameters determining the quality of the output of laser-based powder bed fusion (LPBF) processes. A jerk-limited control strategy is implemented for laser path planning on a LPBF additive manufacturing (AM) testbed. The actual and commanded laser paths/velocities are found in a better agreement with each other compared to conventional controls. The new controller enabled implementation of advanced laser power control strategies synchronized with laser position and velocity by embedding all into a modified G-code (referred as AM G-code). An interpreter is developed to utilize sophisticated LPBF laser control commands.
June 18-22, 2018
College Station, TX
46th SME North American Manufacturing Research Conference, NAMRC 46