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    Continuous gain scheduled h-infinity observer for uncertain nonlinear system with time-delay and actuator saturation

    Access Status
    Fulltext not available
    Authors
    Liu, Y.
    Yin, YanYan
    Liu, F.
    Date
    2012
    Type
    Journal Article
    
    Metadata
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    Citation
    Liu, Y. and Yin, Y. and Liu, F. 2012. Continuous gain scheduled h-infinity observer for uncertain nonlinear system with time-delay and actuator saturation. International Journal of Innovative Computing, Information and Control. 8 (12): pp. 8077-8088.
    Source Title
    International Journal of Innovative Computing, Information and Control
    ISSN
    1349-4198
    School
    Department of Mathematics and Statistics
    URI
    http://hdl.handle.net/20.500.11937/52189
    Collection
    • Curtin Research Publications
    Abstract

    In this paper, we propose a method for designing continuous gain scheduled H-infinity observer for uncertain nonlinear continuous stirred-tank reactor system subject to time-delay and actuator saturation. Initially, gradient linearization procedure is applied to describe such nonlinear system into several linear systems. Next, a convex hull set is investigated in order to transform the actuator constraints into several linear constraints, and then, a set of H-infinity observers is designed for these linear models, which guarantees the system states belong to an ellipsoid invariant set. Finally, continuous gain-scheduled approach is employed to design continuous nonlinear observer on the entire uncertain nonlinear system. A simulation example is given to illustrate the effectiveness of developed techniques. © 2012.

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