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�������պ����ѧѧ�� 2005, Vol. 31 Issue (07) :726-729    DOI:
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�������պ����ѧ ��е���̼��Զ���ѧԺ, ���� 100083
Method to avoid dynamic singularity for flexible manipulators
Gao Zhihui, Yun Chao*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� When the natural frequency of the flexible manipulators is equal to the frequency of the mode force and the mode force is stronger, the dynamic singularity will happen. The structure parameter and kinetic parameter of the flexible manipulator are the factors which influence the natural frequency of the flexible manipulator. A method to avoid the dynamic singularity was given on the condition that the predetermined task is not changed. The method is that a mass can be attached to the existed flexible manipulator to change the frequency of the flexible manipulator, so as to avoid the dynamic singularity. A method to plan the mass and the position where the mass attached to the flexible manipulator was given. A space manipulator with three arms ( the last one is flexible) was simulated, and the method was verified to be effective. This method can also used in other mechanism system.
Keywords�� frequency   dynamic   mass   flexible manipulator     
Received 2004-10-30;

������Ȼ��ѧ������Ŀ(50075008); ����863�߼����о���չ�ƻ�������Ŀ(863-2001AA421200)

About author: ��־��(1971-),Ů,�ӱ��ʳ���,��ʦ, gaozhihui@buaa.edu.cn.
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Gao Zhihui, Yun Chao.Method to avoid dynamic singularity for flexible manipulators[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(07): 726-729
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