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Simulation of thermal control system of nano satellite based on fuzzy control
Yang Juan, Li Yunze, Wang Jun*
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� A thermal system dynamic characteristics equation of a spherical nano satellite was built. And its temperature model was established after system steady temperatures were determined. A fuzzy logic controller was designed and combined it with the temperature model to complete the whole thermal control system. ±50% step interference signals were input respectively to simulate the nano satellite-s temperature changes, when instrument heat source changed and the endotherm from sun radiation by satellite surface and radiator changed. The simulation was carried, and the curves were plotted to be compared with the results had got without any controller. The simulation results show that fuzzy control technology can control the nano satellite temperature accurately and rapidly, and by using fuzzy control method, many good qualities ( such as good robust , insensitive to parameters changing , high adaptability and short transition process time) can be obtained.
Keywords�� nano satellite   thermal control   fuzzy control   simulation     
Received 2007-04-16;

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���, ������, ����.����ģ�����Ƶ��������ȿ�ϵͳ����[J]  �������պ����ѧѧ��, 2008,V34(04): 470-473
Yang Juan, Li Yunze, Wang Jun.Simulation of thermal control system of nano satellite based on fuzzy control[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(04): 470-473
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