Performance limitations imposed by actuator constraints

Matthew Franchek, Weiguang Niu

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Presented in this paper are the effects of actuator rate and output saturation on the regulating capability of an uncertain, unstable system subjected to an external step disturbance, w(t). The maximum control effort delivered from the actuator is bounded as |u(t)| ≤ u, (1 - e-rt) when subjected to a saturating step input. The effects are represented as bounds on the allowable disturbance step size which is an explicit function of the actuator limitations, the degree of instability, and initial condition(s). The class of systems addressed are single-input-output (SIO) regulating systems whose unstable parts are i) real and unique, and/or ii) real and repeated. A stabilizability condition derived from a simple Lyapunov type constraint is used to determined the allowable disturbance tolerance.

    Original languageEnglish (US)
    Title of host publicationAdvances in Robust and Nonlinear Control Systems
    EditorsJeffery L. Stein
    PublisherPubl by ASME
    Pages61-65
    Number of pages5
    Volume53
    ISBN (Print)0791812596
    StatePublished - Dec 1 1993
    EventProceedings of the 1993 ASME Winter Annual Meeting - New Orleans, LA, USA
    Duration: Nov 28 1993Dec 3 1993

    Other

    OtherProceedings of the 1993 ASME Winter Annual Meeting
    CityNew Orleans, LA, USA
    Period11/28/9312/3/93

    ASJC Scopus subject areas

    • Software
    • Mechanical Engineering

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