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In order to work out the effect of unknown time\u2010varying delays on the two\u2010joint robotic manipulator, the appropriate Lyapunov\u2013Krasovskii functionals (LKFs) and separation technology are chosen to settle this matter. The neural networks work as an approximator that has the advantage of estimating the unknown function in the system. In this paper, Lyapunov stability analysis can prove that all signals of the closed\u2010loop system are semiglobal uniformly ultimately bounded and the tracking error can converge to a compact neighborhood with respect to zero. 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