Research Article

[Retracted] Model-Free Adaptive Sliding Mode Robust Control with Neural Network Estimator for the Multi-Degree-of-Freedom Robotic Exoskeleton

Figure 4

The model-free adaptive sliding mode control simulation results of three joints under control. (a) Tracking performance of y1(k). (b) Tracking performance of y2(k). (c) Tracking performance of y3(k). (d) Control inputs of u1(k), u2(k) and u3(k).
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