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Design and Analysis of the Attitude Control System for the S2TEP Mission

Maces Hernandez, Jose Alfredo (2017) Design and Analysis of the Attitude Control System for the S2TEP Mission. Master's, ISAE Supaero.

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Abstract

This thesis describes the design, implementation and simulation process of the attitude control system for DLRs next compact satellite mission S2TEP, which is a three-axis actively stabilized satellite. Based on the requirements arisen during phases A/B, different pointing modes have been established in order to achieve the scientific objectives of this mission. An analytical estimation of the worst-case disturbance torques is obtained for the whole mission, as well as detailed reconstruction for different fine pointing sub-modes for one orbit. This information was later used for the definition of theminimal requirements in attitude determination and attitude control hardware. Some controllers are consequently proposed for every pointing mode. First, an enhanced B-dot controller is used to detumble the satellite after the separation from the launcher. Secondly, a spin controller is defined for coarse attitude acquisition during LEOP, and to maintain the satellite in a stable status in case of any failure. Finally, a LQR-based controller is used for the fine pointing manoeuvres. The mathematical models for the satellite dynamics, actuators, sensor, and environmental models are also derived along this work. At the end, the capabilities of the control system are demonstrated by running someMonte-Carlo simulations under nominal and non-nominal conditions.

Item URL in elib:https://elib.dlr.de/117083/
Document Type:Thesis (Master's)
Title:Design and Analysis of the Attitude Control System for the S2TEP Mission
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Maces Hernandez, Jose AlfredoJose.MacesHernandez (at) dlr.deUNSPECIFIED
Date:5 November 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:106
Status:Published
Keywords:Satellite, Attitude, Control
Institution:ISAE Supaero
Department:Higher Institute of Aeronautics and Space
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):Proj Small Satellite Technology Experiment Platform
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Navigation and Control Systems
Deposited By: Seelbinder, David
Deposited On:13 Dec 2017 10:34
Last Modified:31 Jul 2019 20:14

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