A new family of controllers for position control of robot manipulators
نویسندگان
چکیده
This paper addresses the problem of position control for robot manipulators. A new family of position controllers with gravity compensation for the global position of robots manipulators is presented. The previous results on the linear PD controller are extended to the new proposed family. The main contribution of this paper is to prove that the closed–loop system composed by full nonlinear robot dynamics and the family of controllers is globally asymptotically stable in agreement with Lyapunov’s direct method and LaSalle’s invariance principle. Besides the theoretical results, a real-time experimental comparison is also presented on visual servoing applications to illustrate the performance of the proposed family on a direct–drive robot of two degrees of freedom.
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