Adaptive On-line Process Control of Injection Molding Using Pressure-volume-temperature ModelCornell University, 1991 - 204 pages |
Common terms and phrases
60 Cycle 7th cycle barrel barrel-temperature setting changed boundary conditions calculated cavity pressure cc/sec change from 190 closed-loop Comparison between measured constant control system coolant coolant-temperature setting changed cooling rate cycle and coolant-temperature density desired part thickness employed Experiment T2 filling stage gain setting gain-scheduling gap-wise direction given in Fig HDPE hydraulic packing pressure Injection Molding injection speed injection-molding process Lexan M. R. Kamal mass flow rate material is PC material is PMMA measured and predicted measured thickness mold plate mold temperature mold-wall temperature molding process node noted on-line one-dimensional open-loop Plastic Engrs polymer melt Polynomial interpolation polystyrene post-filling stage predicted thickness predictive model present investigation process control processing conditions given processing parameters PSI/cm regression analysis Schematic diagram semi-crystalline shear rate shown in Fig Simulation T1 speed of 25 step change Tait equation thermal conductivity thermal-mechanical thermocouple Thickness cm Tm and Tw viscosity volumetric shrinkage