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�������պ����ѧѧ�� 2008, Vol. 34 Issue (10) :1228-1231    DOI:
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���嶫1, ������2, �� ��2*
1. ������ҵ��ѧ ����ѧԺ, ���� 710072;
2. �������պ����ѧ �Զ�����ѧ���������ѧԺ, ���� 100191
Fast inference algorithm of launching decision-making expert system for launch vehicle
Li Qingdong1, Liu Chengrui2, Ren Zhang2*
1. Marine Engineering College, Northwestern Polytechnical University, Xi-an 710072, China;
2. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� The launching decision-making system is an expert system which can diagnose the faults of the launch vehicle during the pre-launch testing and give the auxiliary repair strategy and launch decision. In order to achieve the quick fault diagnosis, the launching decision-making expert system should use a fast inference algorithm because there are massive test data need to be processed and the time for diagnosis is quite short. Therefore, a fast inference algorithm including the fact-matching and rule-matching was presented. The fact-matching network was borrowed ideas from the rete algorithm. And the rule-matching network was performed based on the vectors calculation. Finally, a fast inference algorithm suitable for pre-launch FDD (fault detection and diagnosis) of launch vehicle was given. The presented algorithm has been applied in a distributed FDD expert system for a real of launch vehicle. Preliminary results indicate that the algorithm reasons more quickly and more accurately with less system resource consumption, and can meet the real-time requirements.
Keywords�� diagnosis   inference engines   expert system   rockets     
Received 2007-10-26;


About author: ���嶫(1978-),��,����������,��ʿ��,muziqingdong@126.com.
���嶫, ������, �� ��.һ�ֿ����������ڷ������ϵͳ�е�Ӧ��[J]  �������պ����ѧѧ��, 2008,V34(10): 1228-1231
Li Qingdong, Liu Chengrui, Ren Zhang.Fast inference algorithm of launching decision-making expert system for launch vehicle[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(10): 1228-1231
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