Title :
Performance of Bridgman furnace operating under projective control
Author :
Batur, Celal ; Duval, Walter M.B. ; Bennett, Robert J.
Author_Institution :
Dept. of Mech. Eng., Akron Univ., OH, USA
Abstract :
We present the performance of a vertical transparent multizone furnace operating under the projective control algorithm. This Bridgman type furnace is designed for crystal growth applications and can deliver thermal gradients within the range of 2-45°C/cm at the maximum temperature of 750°C. A multivariable projective control algorithm is used for the temperature control. The control system maintains desired thermal profile despite the effects of thermal loads due to a growing crystal
Keywords :
crystal growth; furnaces; multivariable control systems; predictive control; process control; temperature control; 750 degC; Bridgman furnace; crystal growth; multivariable projective control algorithm; thermal gradients; thermal loads; thermal profile; vertical transparent multizone furnace; Crystallization; Furnaces; Heating; Insulation; Quality control; Shape; Temperature control; Temperature distribution; Thermal loading; Thermal stresses;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786315
