Fault Tolerant Attitude and Orbit Determination System for Small Satellite Platforms

Colagrossi, Andrea and Lavagna, Michèle (2022) Fault Tolerant Attitude and Orbit Determination System for Small Satellite Platforms. Aerospace, 9 (2). p. 46. ISSN 2226-4310

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Abstract

Small satellite platforms are experiencing increasing interest from the space community, because of the reduced cost and the performance available with current technologies. In particular, the hardware composing the attitude and orbit control system (AOCS) has reached a strong maturity level, and the dimensions of the components allow redundant sets of sensors and actuators. Thus, the software shall be capable of managing these redundancies with a fault tolerant structure. This paper presents an attitude and orbit determination system (AODS) architecture, with embedded failure detection and isolation functions, and autonomous redundant component management and reconfiguration for basic failure recovery. The system design and implementation has been sized for small satellite platforms, characterized by limited computing capacities, and reduced autonomy level. The discussion describes the system architecture, with particular emphasis on the failure detection and isolation blocks at the component level. The set of functions managing failure detection at system level is also described in the paper. The proposed system is capable of reconfiguring and autonomously recalibrating after various failures had occurred. Attention is also dedicated to the achieved performance, satisfying stringent requirements for a small satellite platform. In these regards, the simulation results used to verify the performance of the proposed system at the model-in-the-loop (MIL) level are also reported.

Item Type: Article
Subjects: Open Digi Academic > Engineering
Depositing User: Unnamed user with email support@opendigiacademic.com
Date Deposited: 29 Mar 2023 06:38
Last Modified: 25 May 2024 09:09
URI: http://publications.journalstm.com/id/eprint/413

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