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A nonlinear observer for semidetectable chemical reactions with application to kinetic-rate-constant estimation

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3 Author(s)
D'Amato, A.M. ; Dept. of Aerosp. Eng., Univ. of Michigan, Ann Arbor, MI, USA ; Ridley, A.J. ; Bernstein, D.S.

In this paper we develop a nonlinear observer to estimate the concentration of reactants in a kinetic network when kinetic rate constants are unknown. When kinetic rate constants are unknown a steady-state error is present in the observer states. We thus develop an augmented observer that accounts for this steady-state error. We demonstrate this technique on numerical examples of increasing complexity, starting with a nominal case and then off-nominal cases, where input and output noise corrupt the available measurements, and finally when a kinetic rate constant evolves periodically over time with unknown dynamics.

Published in:

Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on

Date of Conference:

15-18 Dec. 2009