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Information Journal Paper

Title

A New Decoupled Sliding Mode Control for Flexible Joint Robotic Manipulators Trajectory Tracking in the Presence of Chaos with Practical Implementation

Author(s)

 Abdollah Hasan Nezhad Abdollah Hasan Nezhad | Abolfazl Ranjbar Noiey Abolfazl Ranjbar Noiey | Mohammad Reza Soltanpour Mohammad Reza Soltanpour | Mohammad Veysi Mohammad Veysi | Issue Writer Certificate 

Pages

  71-89

Abstract

 This paper presents a novel non-singular fast terminal Decoupled sliding mode control for position tracking of flexible joint robotic manipulators under Chaos and Uncertainty. Firstly, a suitable chaotic reference is used as a synchronization mechanism to create Chaos in the dynamics. Next, the conventional Decoupled sliding mode control is examined. It is shown that this method faces challenges in achieving asymptotic stability for trajectory tracking under some conditions. Subsequently, a new coupling variable is designed, a non-singular fast terminal sliding surface is utilized, and a new reaching law is proposed in such a way that they can resolve not only the problems of the Decoupled sliding mode control but also improve convergence time, reduce chattering, eliminate singularity, and provide Finite-time asymptotic stability. A comprehensive convergence analysis is conducted for all the sliding surfaces. Finally, simulations and experimental implementations as hardware-in-the-loop are carried out to evaluate the performance of the proposed method. Additionally, the results are compared to the conventional Decoupled sliding mode control and hierarchical sliding mode control. The results validate the effectiveness of the proposed control method in suppressing the deflection angle, improving convergence time, and reducing chattering in the control input in the presence of Chaos and uncertainties.

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