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�������պ����ѧѧ�� 2006, Vol. 32 Issue (09) :1087-1090    DOI:
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����, ������, �ڹ⻪, ��һ��*
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Design of bionic flapping mechanism and its kinematic analysis
Jia Ming, Bi Shusheng, Zong Guanghua, Xu Yicun*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� Bionic flapping mechanism aims at realizing flapping motion of insect wings. It has become clear that two-degree-of-freedom flapping motion harmoniously is necessary for insects to produce enough lift. Double four-bar linkage mechanism and differential planetary gear train are two elements of bionic flapping mechanism, and its design, implementation, and testing were made. Driven by servo-actuator, double four-bar linkage mechanism transfers rotary motion to two sets of oscillating motions, then differential planetary gear train transfers oscillating motions to insectlike flapping motion of plunging and pitching. Mechanism kinematic analysis were made and linkage parameters and gear ratios were determined for implementing perfect flapping motion. Then instantaneous stroke angular position and angle of attack of the wing were plotted with respect to a complete alternation of upstroke and downstroke.
Keywords�� bionic mechanism   flapping wings   kinematic analysis     
Received 2005-10-20;

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About author: �� ��(1978-),��,����������,��ʿ��,jiaming 2002@sohu.com.
����, ������, �ڹ⻪, ��һ��.�������������������˶�ѧ����[J]  �������պ����ѧѧ��, 2006,V32(09): 1087-1090
Jia Ming, Bi Shusheng, Zong Guanghua, Xu Yicun.Design of bionic flapping mechanism and its kinematic analysis[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(09): 1087-1090
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