| Autor: |
Giovanni Campolo, Luca Massotti, Massimo Casasco, Patrizio Pavia, Henry De Plinval, Chiara Toglia, Christelle Cumer, Daniel Alazard, Thomas Loquen |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
AIAA Guidance, Navigation, and Control (GNC) Conference. |
| DOI: |
10.2514/6.2013-4640 |
| Popis: |
This paper introduces an innovative method for the design of Earth Observation satellites with large flexible appendages that combines performance of the attitude control system and the structural sizing of the satellite itself. Such process is a structure-control co-design, obtained via a constrained optimisation. The objective is to determine a satellite structural model that minimises a cost function while preserving a controller performance index. The free parameters for optimisation are directly defined on the satellite Finite Element Model (FEM). For each optimisation step, the continuous dynamical model, in terms of mass, stiffness, and damping matrices, is obtained by performing FE analysis with commercial FEM software, and a linear robust control is synthesized. The control performance index is computed to evaluate whether the solution is compliant with the control requirements or not. A Genetic Algorithm is chosen as optimisation strategy to deal with the non-convexity of the search space, and both single and multi-objective optimisations are performed. The whole process has been tested and validated using as benchmark the Biomass satellite (selected for implementation as Earth Explorer Core Mission 7). The work described in this paper has been carried out in the frame of the study ”Modern attitude control of Earth Observation satellites with large flexible elements”, funded by the European Space Agency. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
