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CEAS EuroGNC 2022

Robust Observer-Based Space Launcher Control With Time-Varying Objectives
Felix Biertümpfel Research Associate, Chair of Flight Mechanics and Controls, Technische Universität Dresden, 01062, Dresden, Germany.
Julian Theis Control Engineer, Underwater Vehicles Engineering, ATLAS ELEKTRONIK GmbH, 28309 , Bremen, Germany.
Harald Pfifer Professor, Chair of Flight Mechanics and Controls, Technische Universität Dresden, 01062, Dresden, Germany.
Abstract:
This paper presents a novel approach for robust linear time-varying control design for space launchers. It allows the controller to explicitly respect the launcher's highly time-varying dynamics as well as changing control objectives along the ascent trajectory. The latter are readily incorporated via time-varying weighting functions in the mixed sensitivity synthesis. For a more traceable and effective control design a recently proposed weighting scheme is applied, which significantly reduces the controller tuning effort. The synthesis uses a novel observer-based finite horizon linear time-varying (LTV) synthesis approach. It provides a highly structured controller which is easy to implement and facilitates, for example, the incorporation of anti wind-up compensation. The approach is used to design a pitch controller for a small expendable launch vehicle in atmospheric ascent tracking the open-loop guidance reference signal.
Keywords: Linear Time-Varying Systems; Observer-Based Control; Space Launcher
 View PDF CEAS-GNC-2022-065


Felix Biertümpfel, Julian Theis, Harald Pfifer: Robust Observer-Based Space Launcher Control With Time-Varying Objectives. Proceedings of the 2022 CEAS EuroGNC conference. Berlin, Germany. May 2022. CEAS-GNC-2022-065.
BibTeX entry:

@Incollection{CEAS-GNC-2022-065,
    authors = {Biertümpfel, Felix and Theis, Julian and Pfifer, Harald},
    title = {Robust Observer-Based Space Launcher Control With Time-Varying Objectives},
    booktitle = {Proceedings of the 2022 {CEAS EuroGNC} conference},
    address = {Berlin, Germany},
    month = may,
    year = {2022},
    note = {CEAS-GNC-2022-065}
}