Disturbance Decoupled Observers for Systems With Unknown Inputs

H. Trinh, T.D. Tran, Tyrone Fernando

    Research output: Contribution to journalArticlepeer-review

    54 Citations (Scopus)

    Abstract

    This note deals with the design of reduced-order disturbance decoupled scalar functional observers for linear systems with unknown inputs. Based on a parametric approach, existence conditions are derived and a design procedure for finding reduced-order scalar functional observers is given. The derived existence conditions are relaxed and the procedure can find first-order disturbance decoupled scalar functional observers for some cases where the number of unknown inputs is more than the number of outputs. Also, the observer matching condition, which is the necessary requirement for the design of state observers for linear systems with unknown inputs, is not required. Numerical examples are given to illustrate the attractiveness of the proposed design method.
    Original languageEnglish
    Pages (from-to)2397-2402
    JournalIEEE Transactions on Automatic Control
    Volume53
    Issue number10
    DOIs
    Publication statusPublished - 2008

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