Modular design of nonlinear observers for state and disturbance estimation Academic Article

abstract

• 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 proposed modular nonlinear observer is tested through simulation studies in an illustrative example involving a biochemical reactor. 2008 Elsevier B.V. All rights reserved.

authors

• Kravaris, Costas

published proceedings

• SYSTEMS & CONTROL LETTERS

author list (cited authors)

• Kravaris, C., & Savoglidis, G.

citation count

• 5

complete list of authors

• Kravaris, Costas||Savoglidis, Georgios

publication date

• November 2008

publisher

• Elsevier  Publisher

published in

• Systems and Control Letters  Journal

keywords

• Nonlinear Observers
• Nonlinear Systems

Digital Object Identifier (DOI)

• 10.1016/j.sysconle.2008.05.005

start page

• 946

end page

• 957

volume

• 57

issue

• 11

URL

• http://dx.doi.org/10.1016/j.sysconle.2008.05.005