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A new RISE-based adaptive control of PKMs: design, stability analysis and experiments

Abstract : This paper deals with the development of a new adaptive control scheme for parallel kinematic manipulators (PKMs) based on Rrbust integral of the sign of the error (RISE) control theory. Original RISE control law is only based on state feedback and does not take advantage of the modelled dynamics of the manipulator. Consequently, the overall performance of the resulting closed-loop system may be poor compared to modern advanced model-based control strategies. We propose in this work to extend RISE by including the nonlinear dynamics of the PKM in the control loop to improve its overall performance. More precisely, we augment original RISE control scheme with a model-based adaptive control term to account for the inherent nonlinearities in the closed-loop system. To demonstrate the relevance of the proposed controller, real-time experiments are conducted on the Delta robot, a three-degree-of-freedom (3-DOF) PKM.
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Submitted on : Tuesday, September 10, 2019 - 4:13:34 PM
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Moussab Bennehar, Ahmed Chemori, Mohamed Bouri, Laurent Frédéric Jenni, François Pierrot. A new RISE-based adaptive control of PKMs: design, stability analysis and experiments. International Journal of Control, Taylor & Francis, 2018, 91 (3), pp.593-607. ⟨10.1080/00207179.2017.1286536⟩. ⟨lirmm-01692463⟩



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