Functional Observers for Nonlinear Systems Academic Article uri icon


  • 2016 In this work, the problem of designing observers for estimating a single nonlinear functional of the state is formulated for general nonlinear systems. Notions of functional observer linearization are also formulated, in terms of achieving exactly linear error dynamics in transformed coordinates and with prescribed rate of decay of the error. Necessary and sufficient conditions for the existence of a lower-order functional observer with linear dynamics and linear output map are derived. The results provide a direct generalization of Luenberger's linear theory of functional observers to nonlinear systems.

published proceedings


author list (cited authors)

  • Kravaris, C.

citation count

  • 10

complete list of authors

  • Kravaris, Costas

publication date

  • January 2016