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�������պ����ѧѧ�� 2011, Vol. 37 Issue (1) :63-66,85    DOI:
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Predictive guidance method for the reentry vehicles based on fuzzy logic
Wang Junbo, Qu Xin, Ren Zhang*
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� A novel predictive guidance was presented for the reentry vehicles based on the fuzzy logic system, according to the requirement of real-time capability. The relation of reentry vehicles- altitude, range and flight path angle was analysed firstly. The system of fuzzy logic was designed with altitude and deviation on target as system inputs and the angular rate of flight path angle as system output. The system took advantage of the experts- experiences to construct the fuzzy rules. Then a novel predictive guidance method was devised following the fuzzy logic which was used for guidance command generation. The method avoids massive iteration computation of general predictive guidance when calculating the angular rate of flight path angle revision command and decreases calculating time of predictive guidance to a satisfactory level effectively. The simulation results indicate the strong anti-interference capacity, high guidance precision and great practical value in engineering of this new predictive guidance method.
Keywords�� reentry vehicles   reentry guidance   fuzzy logic   predictive guidance     
Received 2009-11-12;
About author: ������(1985-), �� , ����������, ��ʿ��, popolwb@163.com.
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������, ����, ����.����ģ���߼���Ԥ�������Ƶ�����[J]  �������պ����ѧѧ��, 2011,V37(1): 63-66,85
Wang Junbo, Qu Xin, Ren Zhang.Predictive guidance method for the reentry vehicles based on fuzzy logic[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(1): 63-66,85
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