Fig. 4: Cost function landscape for feedforward control.

Several examples of simulations and their corresponding cost function landscapes at the collection speeds of (A, B, C) 2000 mm/min and (D, E, F) 800 mm/min with polymer temperature of 75 °C. A Requested fibre diameter of 6 um, B Requested jet angle of 35° (C) Requested fibre diameter of 6 µm and jet angle of 35°, together. D Requested fibre diameter of 12 µm, (E) Requested jet angle of 20° and (F) Requested fibre diameter of 12 µm and jet angle of 20° together.