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Perspektivenwechsel. Bildinformationen anzeigen

Perspektivenwechsel.

Foto: Universität Paderborn

M.Sc. Lukas Johannes Lanza

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M.Sc. Lukas Johannes Lanza

Systemtheorie

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Telefon:
+49 5251 60-5015
Büro:
TP21.1.18
Besucher:
Technologiepark 21
33100 Paderborn

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2021

Internal dynamics of multibody systems

L.J. Lanza, Systems & Control Letters (2021)


Tracking control for underactuated non-minimum phase multibody systems

T. Berger, S. Drücker, L.J. Lanza, T. Reis, R. Seifried, Nonlinear Dynamics (2021)

<jats:title>Abstract</jats:title><jats:p>We consider tracking control for multibody systems which are modeled using holonomic and non-holonomic constraints. Furthermore, the systems may be underactuated and contain kinematic loops and are thus described by a set of differential-algebraic equations that cannot be reformulated as ordinary differential equations in general. We propose a control strategy which combines a feedforward controller based on the servo-constraints approach with a feedback controller based on a recent funnel control design. As an important tool for both approaches, we present a new procedure to derive the internal dynamics of a multibody system. Furthermore, we present a feasible set of coordinates for the internal dynamics avoiding the effort involved with the computation of the Byrnes–Isidori form. The control design is demonstrated by a simulation for a nonlinear non-minimum phase multi-input, multi-output robotic manipulator with kinematic loop.</jats:p>


    Representation and stability of internal dynamics

    L.J. Lanza, PAMM (2021)


    2020

    Observers for Differential-Algebraic Systems with Lipschitz or Monotone Nonlinearities

    T. Berger, L.J. Lanza, in: Progress in Differential-Algebraic Equations II, 2020


    Output tracking for a non-minimum phase robotic manipulator

    T. Berger, L.J. Lanza, in: arXiv:2001.07535, 2020

    We exploit a recently developed funnel control methodology for linear non-minimum phase systems to design an output error feedback controller for a nonlinear robotic manipulator, which is not minimum phase. We illustrate the novel control design by a numerical case study, where we simulate end-effector output tracking of the robotic manipulator.


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