Object-oriented modelling for spacecraft dynamics: Tools and applications |
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Authors: | T Pulecchi F Casella M Lovera |
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Affiliation: | 1. Graduate Center of CUNY, Physics, 365 Fifth Avenue, New York, NY 10016, USA;2. College of Staten Island/CUNY, Engineering Department, 2800 Victory Boulevard, Staten Island, NY 10314, USA;3. Ruhr-Universität Bochum, AFP, Universitätsstrasse 150, D-44780 Bochum, Germany;4. Universität Duisburg-Essen, Fakultät für Physik, Lotharstrasse 1-21, 47057 Duisburg, Germany;1. School of Information Engineering, Xiangtan University, Xiangtan 411105, China;2. School of Aerospace Engineering, Xiamen University, Xiamen 361005, China |
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Abstract: | The development process for spacecraft control systems relies heavily on modelling and simulation tools for spacecraft dynamics. For this reason, there is an increasing need for adequate design tools in order to cope efficiently with tightening budgets for space missions. The paper discusses the main issues related to the modelling and simulation of satellite dynamics for control purposes, and then presents an object-oriented modelling framework, implemented as a Modelica library. The proposed approach allows a unified approach to a range of problems spanning from initial mission design and actuator sizing phases, down to detailed closed-loop simulation of the control system, including realistic models of sensors and actuators. It also promotes the reuse of modelling knowledge among similar missions, thus minimizing the design effort for any new project. The proposed framework and the Modelica library are demonstrated by several illustrative case studies. |
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