The stability analysis of systems with nonlinear feedback expressed by a quadratic program

G Li, WP Heath, B Lennox

    Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

    7 Citations (Scopus)
    423 Downloads (Pure)

    Abstract

    We consider the stability of the feedback connection of a stable linear time invariant (LTI) plant with a static nonlinearity expressed by a certain class of quadratic program (QP). We establish quadratic constraints from the Karush-Kuhn-Tucker (KKT) conditions that may be used to construct a piecewise quadratic Lyapunov function via the S-procedure. The approach is based on existing results in the literature, but gives a more parsimonious linear matrix inequality (LMI) criterion. Our approach can be extended to model predictive control (MPC), and gives equivalent results to those in the literature but with a much lower dimension LMI criterion
    Translated title of the contributionThe stability analysis of systems with nonlinear feedback expressed by a quadratic program
    Original languageEnglish
    Title of host publicationthe 45th IEEE Conference on Decision and Control, San Diego, California USA
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages4247 - 4252
    Number of pages6
    ISBN (Print)1424401712
    DOIs
    Publication statusPublished - Dec 2006
    Event45 IEEE Conference on Decision and Control - San Diego, CA, United States
    Duration: 1 Dec 2006 → …

    Conference

    Conference45 IEEE Conference on Decision and Control
    Country/TerritoryUnited States
    CitySan Diego, CA
    Period1/12/06 → …

    Bibliographical note

    Conference Organiser: IEEE
    Rose publication type: Conference contribution

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    Keywords

    • absolute stability
    • Lur'e systems
    • LMI
    • quadratic program

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