A robust synthesis methodology for neutrally stable uncertain SISO plants under input amplitude saturation

    Authors

    W. Wu;S. Jayasuriya

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Int. J. Syst. Sci.

    Keywords

    feedback control; robust control; nonlinear systems; frequency domain; method; QFT; input saturation; neutrally stable; FEEDBACK-SYSTEMS; LINEAR-SYSTEMS; ANTIWINDUP DESIGNS; Automation & Control Systems; Computer Science, Theory & Methods; Operations Research & Management Science

    Abstract

    In this article, a control system design methodology for neutrally stable, uncertain, single-input single-output plants under input amplitude saturation is presented. Based on Horowitz's original three degree of freedom design and extensions developed afterwards, this approach concentrates on neutrally stable, higher type, uncertain plants. A three degree of freedom non-interfering loop structure is used for the synthesis, along with the structure of the additional, independent loop transmission around the saturating element proposed for designing the third degree of freedom H(s). Robust stability and performance are established. The circle criterion, the describing function and non-overshooting conditions are utilised to obtain design constraints. Finally, all these design constraints are expressed in frequency domain bounds and synthesis follows from loop shaping methods such as quantitative feedback theory.

    Journal Title

    International Journal of Systems Science

    Volume

    44

    Issue/Number

    3

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    461

    Last Page

    470

    WOS Identifier

    WOS:000311479200006

    ISSN

    0020-7721

    Share

    COinS