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Satellite Attitude Control with a six-Control Moment Gyro Cluster tested under Microgravity Conditions

Evain, Hélène and Alazard, Daniel and Rognant, Mathieu and Solatges, Thomas and Brunet, Antoine and Mignot, Jean and Rodriguez, Nicolas and Dias-Ribeiro, Adrien Satellite Attitude Control with a six-Control Moment Gyro Cluster tested under Microgravity Conditions. (2019) In: International Symposium on Space Flight Dynamics 2019 (ISSFD), 24 February 2019 - 28 February 2019 (Melbourne, Australia).

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Abstract

The attitude control of a satellite equipped with a six-Control Moment Gyro (CMG) cluster is studied, taking into account CMG failure cases and constraints like actuator saturation and real-time aspects. The design of the steering law that allocates the required torques among the actuators is made complex by singularities (gimbal angles of the CMGs where no torque can be created along an axis). This paper describes the problem of a constrained allocation applied to the CMG system, and explains the selected solution. An experimental setup with six CMGs has been designed. It calculates in real-time the attitude guidance laws and control loop. Agile manoeuvres simulating nanosatellite attitude reorientations have been successfully carried out during a European Space Agency (ESA) parabolic flight campaign. The results show that the steering law performs as expected even in case of CMG failures.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-02166772
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National d'Études Spatiales - CNES (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
French research institutions > Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE)
Laboratory name:
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Deposited By: Daniel Alazard
Deposited On:26 Jun 2019 09:59

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