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 te...

Full description

Saved in:
Bibliographic Details
Published in:CIRP annals 2023, Vol.72 (1), p.157-160
Main Authors: Liao, Shuheng, Jeong, Jihoon, Zha, Rujing, Xue, Tianju, Cao, Jian
Format: Article
Language:English
Subjects:
Additive manufacturing
Finite element method
Process control
Temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0007-8506
DOI:10.1016/j.cirp.2023.03.014