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�������պ����ѧѧ�� 2008, Vol. 34 Issue (06) :725-728    DOI:
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1. �������պ����ѧ �Զ�����ѧ���������ѧԺ, ���� 100191;
2. ������ҵ��ѧ ���繤��ѧԺ, ����, 100041;
3. �������պ����ѧ �Զ�����ѧ���������ѧԺ, ���� 100191
Driving torque special solution constructive approach of redundant actuated manipulator
Yan Caixia1, He Guangping2, Lu Zhen3*
1. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. School of Electronics and mechanism, North China University of Technology, Beijing 100041, China;
3. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Taking redundant actuated manipulator with planar 3 degree of freedom as subject investigated, the kinematics model was deduced. Based on the virtual work principle and the equivalent force theory, the dynamic model was built. After the fault tolerant performance of redundant actuated manipulator was discussed, the force abrupt change of driving joint before and after fault occurrence was defined. Furthermore, the uncertainty of redundant actuated manipulator dynamics inverse solution was analyzed. To improve the reliability and fault tolerant performance, a new force allocation approach was brought forward. By taking the reliability of actuator as coefficient multiplier, the uncertain solution was constructed from the certain force allocation solution after failure. The sums of force abrupt change got calculated with traditional approach and this new method were compared. Data simulating result indicates this approach has an outstanding fault tolerant performance.
Keywords�� redundant actuators   parallel manipulator   dynamics   fault tolerant   reliability   special solution constructive approach     
Received 2007-06-06;
Fund:

��������Ȼ��ѧ����������Ŀ(3062009)

About author: �Ʋ�ϼ(1978��),Ů,����ͨ����,��ʿ��,yancx@asee.buaa.edu.cn.
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�Ʋ�ϼ, �ι�ƽ, ½��.�����������������������ص��ؽ⹹�취[J]  �������պ����ѧѧ��, 2008,V34(06): 725-728
Yan Caixia, He Guangping, Lu Zhen.Driving torque special solution constructive approach of redundant actuated manipulator[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(06): 725-728
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