ESO architectures in the trajectory tracking ADR controller for a mechanical system: a comparison

Proper operation of the Active Disturbance Rejection (ADR) controller requires a precise determination of the so-called total disturbance affecting the considered dynamical system, usually estimated by the Extended State Observer (ESO). The observation quality of total disturbance has a significant...

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Veröffentlicht in:arXiv.org 2020-01
Hauptverfasser: Łakomy, Krzysztof, Patelski, Radosław, Pazderski, Dariusz
Format: Artikel
Sprache:eng
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Zusammenfassung:Proper operation of the Active Disturbance Rejection (ADR) controller requires a precise determination of the so-called total disturbance affecting the considered dynamical system, usually estimated by the Extended State Observer (ESO). The observation quality of total disturbance has a significant impact on the control error values, making room for a potential improvement of control system performance using different structures of ESO. In this article, we provide a quantitative comparison between the Luenberger and Astolfi/Marconi (AM) observers designed for three different extended state representations and utilized in the trajectory tracking ADR controller designed for a mechanical system. Included results were obtained in the simple simulation case, followed by the experimental validation on the main axis of a telescope mount.
ISSN:2331-8422
DOI:10.48550/arxiv.2001.06377