Optimal kinematic finite-time control of mobile manipulators
2017
This paper addresses the optimal kinematic control problem of the mobile manipulators. A computationally simple class of the Jacobian transpose control algorithms is proposed for the end-effector trajectory tracking. These controllers use a new non-singular Terminal Sliding Mode (TSM) manifold, as being a non-linear integral mapping of the second order with respect to the task space tracking error. Based on the Lyapunov stability theory, Jacobian transpose control schemes proposed are shown to be finite-time stable provided that some reasonable assumptions are fulfilled during the mobile manipulator movement. The performance of the proposed control strategies is illustrated through computer simulations for a planar mobile manipulator which accomplishes trajectory tracking by the end-effector in a two-dimensional task space and simultaneously minimises the Euclidean instantaneous distance between initial configuration and the current one.
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