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Control analysis for a contactless de-tumbling method based on eddy currents: problem definition and approximate proposed solutions

Control analysis for a contactless de-tumbling method based on eddy currents: problem definition and approximate proposed solutions
Control analysis for a contactless de-tumbling method based on eddy currents: problem definition and approximate proposed solutions
Existing active debris removal (ADR) methods that require physical contact with the target have applicability limitations depending on the maximum angular momentum that can be absorbed. Therefore, a de-tumbling phase prior to the capturing phase may be necessary. The aim of this article is to present the on-going work on the control module of a contactless de-tumbling subsystem based on eddy currents ('Eddy Brake'). This research is being carried out in the framework of the Agora mission (Active Grabbing & Orbital Removal of Ariane), which employs a robotic spacecraft concept to demonstrate technologies to autonomously de-tumble, capture and de-orbit an Ariane rocket body. The article first presents the 'Eddy Brake' method and the Guidance, Navigation and Control (GNC) architecture of a chaser spacecraft. Furthermore, the linear and rotational dynamics based on the Magnetic Tensor Theory (MTT) are explained. Then, a control strategy is presented to keep a constant relative distance between the two objects and a suitable relative pointing of the coil towards the target object. A simplified analytical solution for the control of the two objects in the 2D problem is presented and the stability of the system in the vicinity of a stable asymptotic state is analysed. Finally, two case studies are presented on the Ariane-4 H10 and Ariane-5 EPS upper stages
Ortiz Gómez, Natalia
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J.I. Walker, Scott
f28a342f-9755-48fd-94ea-09e44ac4dbf5
Jankovic, Marko
1130fa9f-0ef2-44f8-8f60-22ffbaf254da
Romero Martín, Juan Manuel
6a3d5a0e-d8e3-4d01-a8a1-48590dfb53bb
Kirchner, Frank
9e1c5479-1d4b-4524-a7b6-fdb55842fb43
Vasile, Massimiliano
de6550cb-82fc-49eb-b90b-dffa9787bf7d
Ortiz Gómez, Natalia
a9b9ef9a-75c8-42d4-986d-4c7b6e61c9ef
J.I. Walker, Scott
f28a342f-9755-48fd-94ea-09e44ac4dbf5
Jankovic, Marko
1130fa9f-0ef2-44f8-8f60-22ffbaf254da
Romero Martín, Juan Manuel
6a3d5a0e-d8e3-4d01-a8a1-48590dfb53bb
Kirchner, Frank
9e1c5479-1d4b-4524-a7b6-fdb55842fb43
Vasile, Massimiliano
de6550cb-82fc-49eb-b90b-dffa9787bf7d

Ortiz Gómez, Natalia, J.I. Walker, Scott, Jankovic, Marko, Romero Martín, Juan Manuel, Kirchner, Frank and Vasile, Massimiliano (2016) Control analysis for a contactless de-tumbling method based on eddy currents: problem definition and approximate proposed solutions. AIAA Scitech Forum and Exposition, United States. 04 - 08 Jan 2016. 25 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Existing active debris removal (ADR) methods that require physical contact with the target have applicability limitations depending on the maximum angular momentum that can be absorbed. Therefore, a de-tumbling phase prior to the capturing phase may be necessary. The aim of this article is to present the on-going work on the control module of a contactless de-tumbling subsystem based on eddy currents ('Eddy Brake'). This research is being carried out in the framework of the Agora mission (Active Grabbing & Orbital Removal of Ariane), which employs a robotic spacecraft concept to demonstrate technologies to autonomously de-tumble, capture and de-orbit an Ariane rocket body. The article first presents the 'Eddy Brake' method and the Guidance, Navigation and Control (GNC) architecture of a chaser spacecraft. Furthermore, the linear and rotational dynamics based on the Magnetic Tensor Theory (MTT) are explained. Then, a control strategy is presented to keep a constant relative distance between the two objects and a suitable relative pointing of the coil towards the target object. A simplified analytical solution for the control of the two objects in the 2D problem is presented and the stability of the system in the vicinity of a stable asymptotic state is analysed. Finally, two case studies are presented on the Ariane-4 H10 and Ariane-5 EPS upper stages

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Published date: 5 January 2016
Venue - Dates: AIAA Scitech Forum and Exposition, United States, 2016-01-04 - 2016-01-08
Organisations: Aeronautics, Astronautics & Comp. Eng

Identifiers

Local EPrints ID: 385989
URI: https://eprints.soton.ac.uk/id/eprint/385989
PURE UUID: b834d004-dac8-4c8d-9491-090b656038a7

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Date deposited: 29 Jan 2016 11:32
Last modified: 17 Jul 2017 19:53

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Contributors

Author: Natalia Ortiz Gómez
Author: Marko Jankovic
Author: Juan Manuel Romero Martín
Author: Frank Kirchner
Author: Massimiliano Vasile

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