Journal
CONTROL ENGINEERING PRACTICE
Volume 16, Issue 5, Pages 541-552Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.conengprac.2007.06.004
Keywords
fundamental modeling; Bi-level optimization; feedback controllers; process design; hierarchical optimization; optimal control
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Spray dryers represent an important unit operation in industries such as pharmaceuticals and rood. Here, a spray drying process that produces micro-particles is used to investigate controller design in two approaches. The first approach assumes the process design is complete and then applies optimal control theory to synthesize the controller. The second approach assumes that both the process and controller designs are to be found together and uses a hierarchical decision-based, approach to arrive at the optimal designs. Results are presented to show the possible coupling between the optimal designs that are overlooked in the serial approach. (c) 2007 Elsevier Ltd. All rights reserved.
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