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Fast slew maneuvers for the High-Torque-Wheels BIROS spacecraft

Acquatella B., Paul (2017) Fast slew maneuvers for the High-Torque-Wheels BIROS spacecraft. 26th International Symposium on Space Flight Dynamics, June 3-9, 2017, Matsuyama-Ehime, Japan.

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Kurzfassung

The satellite platform BIROS (Bi-spectral InfraRed Optical System) is the second technology demonstrator of the DLR R&D `FireBIRD' space mission aiming to provide infrared remote sensing for early fire detection. Among several mission goals and scientific experiments, to demonstrate a high-agility attitude control system, the platform is actuated with an extra array of three orthogonal `High-Torque-Wheels' (HTW). For agile reorientation, however, a challenge arises from the fact that time-optimal slew maneuvers are in general not of the Euler-axis rotation type, specially whenever the actuators are constrained independently. Moreover, BIROS' On-Board-Computer (OBC) can only accommodate rotational acceleration commands twice per second. Our objective is therefore to find a methodology to design fast slew maneuvers while considering a highly dynamic plant commanded by piecewise-constant sampled-time control inputs. We do this by considering a comprehensive analytical nonlinear model for spacecraft equipped with reaction wheels and transcribing a time-optimal control problem formulation into a multi-criteria optimization problem which is then solved with a direct approach in a sequential procedure using the trajectory optimization package `trajOpt' of DLR-SR's optimization tool MOPS `Multi-Objective Parameter Synthesis'. Our approach for efficient design of rest-to-rest fast slew maneuvers considers an attitude error whose magnitude is proportional to Euler-axis rotations between current and desired attitudes even for large initial attitude errors. Results based on numerical simulations are presented to illustrate our method.

elib-URL des Eintrags:https://elib.dlr.de/118396/
Dokumentart:Konferenzbeitrag (Vorlesung)
Titel:Fast slew maneuvers for the High-Torque-Wheels BIROS spacecraft
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Acquatella B., PaulPaul.Acquatella (at) dlr.dehttps://orcid.org/0000-0002-0826-6984NICHT SPEZIFIZIERT
Datum:Juni 2017
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Attitude control system, slew maneuver optimization, time-optimal control, sampled-time control systems
Veranstaltungstitel:26th International Symposium on Space Flight Dynamics
Veranstaltungsort:Matsuyama-Ehime, Japan
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:June 3-9, 2017
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Technik für Raumfahrtsysteme
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R SY - Technik für Raumfahrtsysteme
DLR - Teilgebiet (Projekt, Vorhaben):R - Projekt High-Torque-Wheels (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Systemdynamik und Regelungstechnik > Raumfahrt-Systemdynamik
Hinterlegt von: Acquatella B., Paul
Hinterlegt am:22 Jan 2018 14:33
Letzte Änderung:31 Jul 2019 20:15

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