Nonlinear Unknown Input Observer Design for Nonlinear Systems: A New Method

Ali Koshkouei, Keith Burnham, Tabassom Sedighi

    Research output: Chapter in Book/Report/Conference proceedingChapter

    9 Citations (Scopus)


    This paper provides new developments in the design of observers for nonlinear systems with unknown inputs. The proposed methods guarantee the error system stability and yield many additional degrees of freedom available to the designer. The algorithms for designing a nonlinear observer for nonlinear systems with unknown inputs is derived in detail. The proposed observers may be used for fault detection and isolation. A nonlinear mass-spring-damper model is given in order to highlight the efficiency of the proposed method.
    Original languageEnglish
    Title of host publicationIFAC Proceedings Volumes
    Publication statusPublished - Jan 2011

    Bibliographical note

    The full text is not available on the repository.


    • Nonlinear control systems
    • Nonlinear observer
    • Unknown input observer
    • Error stability analysis
    • Mass-spring-damper system


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