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�������պ����ѧѧ�� 2004, Vol. 30 Issue (09) :818-821    DOI:
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Investigation of testing dynamic characteristics of digital closed-loop fiber optic gyroscope
Wang Yan, Zhang Chunxi*
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The fiber optic gyroscope is a new rotation sensor, and it is based on the Sagnac effect. The bandwidth of fiber optic gyroscopes is wider than mechanical gyroscopes. It is difficult to test dynamic characteristics of fiber optic gyroscopes with traditional equipment. Considered the principle of digital closed-loop fiber optic gyroscopes, the technique of testing dynamic characteristics was schemed out by means of adding signal to integrated optic modulator. The phase difference due to rotation rate was replaced with the phase difference generated by ramp phase modulation. Based on system transfer function, equivalence of the technique was proved. Step response and frequency response were tested. The conclusion that the bandwidth of FOG exceeded 2 kHz was approved.
Keywords�� simulation   fiber optic gyroscopes   dynamic characteristic   testing     
Received 2003-06-16;
About author: �� ��(1973-),Ů,��������������,��ʿ��,wangyan6547@eyou.com.
����, �Ŵ���.���ֱջ��������ݶ�̬���Բ����о�[J]  �������պ����ѧѧ��, 2004,V30(09): 818-821
Wang Yan, Zhang Chunxi.Investigation of testing dynamic characteristics of digital closed-loop fiber optic gyroscope[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(09): 818-821
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2004/V30/I09/818
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