Title :
Identification and control of crystallization dynamics during sheet polymer extrusion
Author :
Batur, Celal ; Thananchai, Leephakpreeda
Author_Institution :
Dept. of Mech. Eng., Akron Univ., OH, USA
Abstract :
Crystallinity control for polymer sheet extrusion processes is considered. An analytical model for the crystallinity dynamics is derived. This development is based on the continuity, momentum, energy and crystallinity equations. It is shown that the crystallinity dynamics can be linearized around a normal operating point. Based on the linearized model, the crystallinity dynamics are identified and a pole placement control law is derived and simulated in order to control the crystallinity around the operating point
Keywords :
crystallisation; dynamics; extrusion; identification; partial differential equations; plastics industry; pole assignment; polymers; process control; crystallinity control; crystallization dynamics; linearized model; partial differential equation; plastics industry; pole placement; process control; process dynamics; sheet polymer extrusion; Boundary conditions; Boundary value problems; Cooling; Crystal microstructure; Crystallization; Equations; Polymers; State feedback; Steady-state; Thermal stresses;
Conference_Titel :
American Control Conference, 1997. Proceedings of the 1997
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-3832-4
DOI :
10.1109/ACC.1997.611872
