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Impact analysis and post-impact motion control issues of a free-floating Space robot subject to a force impulse

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2 Author(s)
Nenchev, D.N. ; Dept. of Mech. & Production Eng., Niigata Univ., Japan ; Kazuya Yoshida,

This article presents impact dynamic analysis of a free-floating space robot, subject to a force impulse at the hand. We study the joint and the base reactions in terms of finite velocity changes and clarify their role for the post-impact motion behavior of the robot. The analysis makes use of a joint-space orthogonal decomposition procedure involving the so called reaction null space. The article focuses on the specific case of a nonredundant arm and a reaction null space in terms of base angular motion. We further show that with proper post-impact control it is possible to transfer the whole angular momentum from the base toward the manipulator, and in the same time to reduce the joint velocity

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Robotics and Automation, IEEE Transactions on  (Volume:15 ,  Issue: 3 )