About this Abstract |
| Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Symposium
|
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Presentation Title |
Temperature Control in Volumetrically Heated Digital Glass Forming |
| Author(s) |
Balark Tiwari, Nishan Khadka, Edward C. Kinzel, Robert Landers |
| On-Site Speaker (Planned) |
Balark Tiwari |
| Abstract Scope |
Digital Glass Forming (DGF) allows for precision forming of complex glass morphologies; however, process variations create variations in the temperature and part morphology. This paper uses Iterative Learning Control (ILC) to regulate the part temperature. While temperature feedback control for slow deposition rates, volumetrically heated DGF processes allow for very high deposition rates. In this paper we create an ILC temperature controller for DGF processes. The first trial uses a constant power profile. ILC is then applied to adjust the power profile based on spatial temperature errors. In subsequent trials the temperature error converses to an acceptable value. The ILC methodology is applied to operations where straight tracks and square structures, which require sharp changes in morphology, are fabricated. A variety of velocities are used starting with typical values and increasing to speeds afforded by volumetric heating. The results are compared to a feedback controller. |
| Proceedings Inclusion? |
Planned: Post-meeting proceedings |