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Performance limitations of joint variable-feedback controllers due to manipulator structural flexibility

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2 Author(s)
Cetinkunt, Sabri ; Dept. of Mech. Eng., Illinois Univ., Chicago, IL, USA ; Book, W.J.

The performance limitations of manipulators under joint variable-feedback control are studied as a function of the mechanical flexibility inherent in the manipulator structure. A finite-dimensional time-domain dynamic model of a two-link, two-joint planar manipulator is used in the study. Emphasis is placed on determining the limitations of control algorithms that use only joint variable-feedback information in calculations of control decisions, since most motion control systems in practice are of this kind. Both fine and gross motion cases are studied. Results for fine motion agree well with previously reported results in the literature and are also helpful in explaining the performance limitations in fast gross motions

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Robotics and Automation, IEEE Transactions on  (Volume:6 ,  Issue: 2 )