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Hybrid position/force control of flexible-macro/rigid-micro manipulator systems

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3 Author(s)
Yoshikawa, T. ; Dept. of Mech. Eng., Kyoto Univ., Japan ; Harada, K. ; Matsumoto, A.

In this paper, hybrid position/force control algorithms of combined flexible-macro/rigid-micro manipulator systems are proposed, In the proposed system, the micro manipulator is attached at the tip of the flexible macro manipulator. The macro manipulator can move widely, but cannot realize fast and precise motion because of its flexibility. On the contrary, the micro manipulator cannot move widely, but can move fast and precisely. By taking advantage of the macro/micro system, both the end point position and the force exerted by its end effector can be easily controlled in spite of the flexibility in the macro part. This paper first discusses trajectory planning for the macro/micro system. Second, a quasi-static hybrid control algorithm and a dynamic hybrid control algorithm are developed, In our control algorithms, the macro part is controlled roughly to realize the desired trajectory, and suppress vibration. The micro part is controlled to compensate for the position and force errors due to the elasticity in the macro part. Finally, to verify the effectiveness of the proposed control algorithms, experimental results are shown

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Robotics and Automation, IEEE Transactions on  (Volume:12 ,  Issue: 4 )