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Published October 8, 1996 | public
Journal Article

"Linearizing" Controller Design for a Packed-Bed Reactor Using a Low-Order Wave Propagation Model

Abstract

A nonlinear controller design for a packed-bed reactor is presented. The scheme employs a two-tier approach in which, first, a low-order nonlinear model is developed and, subsequently, a feedback linearizing control law is synthesized. The reduced-order model treats transport mechanisms in the reactor as a nonlinear wave which propagates through the bed. Application of input−output "linearizing" control yields linear dynamics over a wide range of operating conditions. The practical issues of implementing the resultant digital, implicit, nonlinear control law on an actual system are addressed. Closed-loop simulations are used to illustrate the robustness properties of the nonlinear controller. In addition, the relative strengths of this approach over traditional linear control are identified.

Additional Information

© 1996 American Chemical Society. Received for review October 2, 1995; Accepted February 22, 1996. Publication Date (Web): October 8, 1996. Financial support from the National Science Foundation and the Department of Energy is gratefully acknowledged.

Additional details

Created:
August 19, 2023
Modified:
October 26, 2023