Title :
Coprime receding horizon feedback control of hot isostatic pressing
Author :
Meyer, David G. ; Wadley, Haydn N.G.
Author_Institution :
Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA
Abstract :
A closed-loop feedback scheme for obtaining a goal microstructure during hot isostatic pressing of powders is described. The control scheme relies on previously developed process models describing the process dynamics during a pressing run and sensors which can measure density and grain size. Constantly updated linearization and coprime factorization are used, so the control can be implemented by convex programming. Simulation results showing the performance of the control scheme are presented
Keywords :
closed loop systems; convex programming; feedback; hot pressing; linearisation techniques; pressure control; process control; temperature control; closed-loop feedback; convex programming; coprime factorization; grain size; hot isostatic pressing; linearization; microstructure; powder pressing; process dynamics; Density measurement; Feedback control; Grain size; Linear programming; Microstructure; Powders; Pressing; Sensor phenomena and characterization; Size control; Size measurement;
Conference_Titel :
Control Applications, 1992., First IEEE Conference on
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-0047-5
DOI :
10.1109/CCA.1992.269848
