Simulation-guided feedforward-feedback control of melt pool temperature in directed energy deposition

High-performance closed-loop control systems are crucial to process stability and part quality in additive manufacturing processes. In this work, a simulation-guided feedforward-feedback control framework is developed for the directed energy deposition process to effectively control the melt pool temperature. The developed framework consists of two stages: offline iterative finite element simulation for feedforward control and online photodiode-based temperature monitoring for feedback control. The experimental results show that the feedforward-feedback control method can significantly improve the control performance when compared to the conventional feedback control method. & COPY; 2023 CIRP. Published by Elsevier Ltd. All rights reserved.

Automated summary

A simulation-guided feedforward-feedback control framework is developed for effective control of the melt pool temperature in additive manufacturing processes. The experimental results demonstrate that the feedforward-feedback control method significantly improves control performance compared to conventional feedback control.