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�������պ����ѧѧ�� 2010, Vol. 36 Issue (9) :1030-1033    DOI:
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1. �������պ����ѧ �Զ�����ѧ���������ѧԺ, ���� 100191;
2. �й����չ�ҵ���Ź�˾ ���������Զ������о���, ���� 710065
Method for investigation of the optimal redundant gyros number based on reliability analysis
Fu Li, Wang Xinling, Yue Yazhou*
1. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. Xi-an Flight Automation Control Research Institute, Aviation Industry Corporation of China, Xi-an 710065, China

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Abstract�� To solve redundant gyros configuration problem of the strapdown inertial navigation system with redundancy technique in sensor level, a method to determine the optimal number of gyros that compose the redundant system was proposed with a view to the system reliability and cost. It was assumed that the fault of each gyro should be independent of others. To obtain the optimal gyros number, a new criterion was developed by proposing reliability function and the number making the criterion value come to maximum is the optimal gyros number. The change of criterion value was analyzed when the gyros number of redundant system was different. The results show that the redundant system reliability increases with the gyro number increasing. The system reliability improvement is limited but the cost of system increases greatly from some number of gyros. Finally, the optimal gyros number of redundant configuration is given and it is 6.
Keywords�� inertial navigation system   gyroscopes   redundancy   reliability analysis     
Received 2009-08-06;
Fund:

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About author: �� ��(1969-),Ů,����������,������,fuli@buaa.edu.cn.
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����, ������, ������.���ڿɿ��Է���������������������ȷ������[J]  �������պ����ѧѧ��, 2010,V36(9): 1030-1033
Fu Li, Wang Xinling, Yue Yazhou.Method for investigation of the optimal redundant gyros number based on reliability analysis[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(9): 1030-1033
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