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  HomeContents of Chinese Journal of Mechanical Engineering 2002 No.7FAULT TOLERANCE OF REDUNDANT MANIPULATORS WHEN MULTI-JOINT FAILED AND ITS OPTIMIZATION

FAULT TOLERANCE OF REDUNDANT MANIPULATORS WHEN MULTI-JOINT FAILED AND ITS OPTIMIZATION

 

Li Jian Li Jianfeng Wu Zhen Zhang Qixian

Beijing University of Aeronautics andAstronautics

 

Abstract: T he relationship of manipulability between the redundant manipulator and its alt sub-manipulators is formulated on the basis of dexterous analysis, The discussion about relative manipulability is followed, Furthermore, according to the manipulability of sub-manipulators and corresponding relative sub-manipulators, a new optimizing object for kinematic fault tolerance is presented. The algorithm is characterized by less computation, rent-time implementation and capability of keeping joint velocity continuity. The proposed object suits for one joint or multi-joint failure. The validity of the proposed algorithm is demonstrated by (lie simulation result.

Key words: Redundant manipulators  Multi-joint failure  Fault-tolerant criteria Fault-tolerant optimizing algorithm

CLC No: TP242

Received 20001220, received in revised form 20011218

 

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