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SCL
2008

Modular design of nonlinear observers for state and disturbance estimation

14 years 11 days ago
Modular design of nonlinear observers for state and disturbance estimation
This work studies the problem of design of nonlinear observers in the presence of exogenous disturbances. In particular, the present work proposes a systematic design method for nonlinear state and disturbance observers in modular form, consisting of an observer for the disturbance-free part of the system, along with a disturbance observer and a state-estimate corrector. The modular observer is first defined and characterized in a general setting and then, a systematic design method is developed on the basis of exact linearization with eigenvalue assignment. Necessary and sufficient conditions for feasibility of the proposed nonlinear modular observer design are derived. The convergence properties of the proposed nonlinear observer are tested through simulation studies in an illustrative example involving a biological reactor.
Costas Kravaris, Georgios Savoglidis
Added 14 Dec 2010
Updated 14 Dec 2010
Type Journal
Year 2008
Where SCL
Authors Costas Kravaris, Georgios Savoglidis
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