References of "Thepdawala, Salman Ali"
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See detailAttitude Task Allocation and Control in a Swarm of Magnetically Controlled CubeSats
Mahfouz, Ahmed UL; Abdelrahman, Nourhan; Thepdawala, Salman Ali et al

in CDSR 2021 conference proceedings, 8th International Conference on Control, Dynamic Systems, and Robotics (CDSR'21) (2021)

The paper delineates the magnetic controller gains tuning procedure for an active magnetic attitude control system of a CubeSat in the ISS orbit. The optimization is conducted for arbitrary required ... [more ▼]

The paper delineates the magnetic controller gains tuning procedure for an active magnetic attitude control system of a CubeSat in the ISS orbit. The optimization is conducted for arbitrary required attitude given in the orbital reference frame of the spacecraft. The study has been conducted as a part of the Skoltech University project to deploy a swarm of 3U CubeSats for collective gamma-ray bursts detection, which requires the satellites' coordinated attitude control. We consider four identical CubeSats exhibiting swarm behaviour by optimal attitude task allocation on receipt of a command from the mission control center. The first part of this study shows how to obtain the controller gains via linearization of the spacecraft rotational dynamics in the vicinity of the required attitude regime and subsequent numerical optimization (carried out in terms of Floquet theory). The second part shows the collective attitude control scenario. The task of the swarm is to ensure maximum sky coverage around a principal direction uplinked to the spacecraft. The task extends to ensuring the maximum collective stability of the swarm through implementing the optimization algorithm. [less ▲]

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See detailMulti-Agent Attitude Task Allocation and Control in a Swarm of Magnetically Controlled CubeSats
Mahfouz, Ahmed UL; Thepdawala, Salman Ali; Abdelrahman, Nourhan et al

in IAC 2021 congress proceedings, 72nd International Astronautical Congress (IAC) (2021)

The collective behavior of four magnetically controlled CubeSats in LEO is considered. The spacecraft flyas a group and when commanded, use intersatellite link to negotiate and determine the most ... [more ▼]

The collective behavior of four magnetically controlled CubeSats in LEO is considered. The spacecraft flyas a group and when commanded, use intersatellite link to negotiate and determine the most favorablearrangement to provide maximum sky coverage around a specified reference direction by onboard sensors.The most favorable arrangement is attained through attitude task allocation consensus and arrived at by afully magnetic controller implemented onboard of each spacecraft [less ▲]

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