Adaptive Observer for an Extrusion Process of Melt Spinning with Three Unknown Parameters

Abstract

In the paper, we design an adaptive observer for the extruder system with three unknown parameters, namely, two dissipation coefficients and viscosity. The observer orientated model expresses the mass and energy balance in the extruder chamber of melt spinning governed by a group of coupled first order hyperbolic partial differential equations with a moving interface. The observer estimates the states and the three parameters simultaneously, where the estimated parameters converge to their real values exponentially fast. The results are demonstrated in simulation.