THEORETICAL ANALYSIS OF THE STABILITY OF ADAPTIVE EXTRUSION CONTROL FOR EMISSION REDUCTION IN FUSED DEPOSITION MODELLING THREE-DIMENSIONAL PRINTING

Sharara Simbarashe

Three-dimensional layer-by-layer printing releases volatile organic compounds, which causes environmental and health concerns among users of this technology. The question of how to make 3D printing with the method of fused deposition modelling sustainable and environmentally friendly has been discussed over the past 5 years. Central to these efforts is the introduction of an adaptive regulatory approach aimed at minimizing emissions of volatile organic compounds. Static solutions, such as traditional PID controllers with fixed proportional integral derivative (PID) parameters, have difficulty effectively managing volatile organic compound emissions due to their inherent variability due to factors such as the composition of the plastic filament, ambient temperature, and printing geometry. However, the nonlinear dynamics inherent in three-dimensional fused deposition modelling printing requires careful stability testing to ensure system reliability. This article analyzes stability using Lyapunov methods to ensure that an adaptive PID control system for extrusion control, designed to reduce volatile organic compound emissions, ensures stable operation without fluctuations or deviations under unpredictable operating conditions, ensuring both emission reduction goals and print quality.

Keywords:volatile organic compounds, 3D printing, fused deposition modelling, Lyapunov analysis, stability analysis, adaptive control