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Nonlinear feedback control of flexible joint manipulators: a single link case study

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1 Author(s)
Khorasani, K. ; Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada

A nonlinear feedback control for a flexible joint manipulator is investigated. It is shown that if the elastic (parasitic) modes are weakly observable from the output of the system, a state-space coordinate transformation and a static state feedback and control space transformation will turn the flexible system into a linear controllable and observable system. In contrast, if the parasitics are strongly observable, a dynamic state feedback is required for input-output linearization. Numerical simulations for a single link flexible joint manipulator are reported, illustrating the application of the methodology

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Automatic Control, IEEE Transactions on  (Volume:35 ,  Issue: 10 )