In this paper, we develop a variable-gain (VG) control strategy that allows for a reference-dependent ‘bandwidth’ of the feedback controller. The proposed controller architecture can achieve improved performance given time-varying, reference-dependent performance requirements compared to linear time-invariant control, which suffers from design trade-offs between low-frequency tracking performance and sensitivity to higher-frequency disturbances. The VG controller consists of frequency-domain loop-shaped linear filters and a VG element. The gain of this element depends on reference information and determines the desired reference-dependent bandwidth of the resulting controller. We present data-based frequency-domain conditions to verify stability and convergence of the closed-loop system. The complete controller design process and the ability of the ‘bandwidth-on-demand’ controller to outperform linear time-invariant controllers are illustrated through experiments on an industrial nano-positioning motion system.


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    Titel :

    Reference-dependent variable-gain control for a nano-positioning motion system


    Beteiligte:
    van Loon, S.J.L.M. (Autor:in) / Hunnekens, B.G.B. (Autor:in) / Simon, A.S. (Autor:in) / van de Wouw, N. (Autor:in) / Heemels, W.P.M.H. (Autor:in)

    Erscheinungsdatum :

    2016-01-01


    Anmerkungen:

    van Loon , S J L M , Hunnekens , B G B , Simon , A S , van de Wouw , N & Heemels , W P M H 2016 , ' Reference-dependent variable-gain control for a nano-positioning motion system ' , IFAC-PapersOnLine , vol. 49 , no. 13 , pp. 70-75 . https://doi.org/10.1016/j.ifacol.2016.07.929



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629



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