Abstract

Hybrid position/force control for robotic manipulators is considered. The control is carried out in task coordinates. For the force control the non-linear variable structure controller is presented and investigated. The controller maintains the system to reach and remain at the switching hypersurfaces, consisting of internal coordinates of the force controller. The stability of the system and the existing of the sliding mode are analyzed by means of the second Lyapunov method. The developed non-linear force controller was implemented for the hybrid position/force control of a PUMA 200 manipulator. The experimental setup and obtained results are described.

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