Attitude tracking control of a flexible spacecraft under angular velocity constraints |
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Authors: | Laurent Burlion Jean-Marc Biannic Tarek Ahmed-Ali |
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Affiliation: | 1. ONERA, The French Aerospace Lab , Toulouse, France;2. Laboratoire GREYC, UMR CNRS 6072, Université de Caen Basse-Normandie/ENSICAEN , Caen, France |
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Abstract: | In this paper, a new technique is proposed for trajectory tracking of a flexible spacecraft subject to angular velocity constraints. The problem is addressed using an output to input saturation transformation (OIST) which converts the prescribed bounds into state-dependent saturations on the control input signals. It is shown that an interval observer can be used in combination with the OIST technique to ensure that the constraints remain satisfied despite unmeasured flexible modes and torque disturbances. Some realistic simulations conclude the paper and validate our approach. |
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Keywords: | Constrained control interval observers anti-windup spacecraft attitude stabilisation time-domain constraint |
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