About this Abstract |
Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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Presentation Title |
Non-linear Dynamic Modelling of Cartesian-frame FFF 3-D Printer Gantry for Predictive Control |
Author(s) |
Maharshi Arindom Sharma, Albert E Patterson |
On-Site Speaker (Planned) |
Maharshi Arindom Sharma |
Abstract Scope |
This paper addresses the dynamic modelling of an FFF 3-D printer gantry (2-D) to reduce manufacturing defects from extruder carriage error. Physical examples of vibration errors are presented with observations about the machine-related causes of these errors. A six-dimensional non-linear dynamic model of the printer gantry was derived using Newton-Euler method. The Lagrangian dynamic model was derived to get additional insight on energy transfer aspects and model validation. A state-space model of the full system was developed for positioning and control. A detailed case-study of an example printer was completed in Matlab-Simulink to demonstrate the system model with comparisons from the analytical model and some physical characterization on a printer. Finally, a few examples of passive control designs were illustrated for predictive control. It was concluded that dynamics-based predictive control is a promising, realistic, and practical approach to controlling the dynamic error and dimensional error commonly seen with FFF machines. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |