Visual servoing tracking control of uncalibrated manipulators with a moving feature point

Tao Li, Hui Zhao and Yu Chang

International Journal of Systems Science, 2018, vol. 49, issue 11, 2410-2426

Abstract: The paper is concerned with the problem of uncalibrated visual servoing robots tracking a dynamic feature point along with the desired trajectory. A nonlinear observer and a nonlinear controller are proposed, which allow the considered uncalibrated visual servoing robotic system to fulfil the desired tracking task. Based on this novel control method, a dynamic feature point with unknown motion parameters can be tracked effectively along with the desired trajectory, even with multiple uncertainties existing in the camera, the kinematics and the manipulator dynamics. By the Lyapunov theory, asymptotic convergence of the image errors to zero with the proposed control scheme is rigorously proven. Simulations have been conducted to verify the performance of the proposed control scheme. The results demonstrated good convergence of the image errors.

Date: 2018
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DOI: 10.1080/00207721.2018.1504138

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