Modeling and Nonlinear Backstepping Control of a 3-DoF Robot Manipulator

Authors

  • Abdelmajid Akil Interdisciplinary Laboratory of Applied Sciences (LISA), ENSA Berrechid, Hassan 1 University, Settat, Morocco
  • Ayoub Nouaiti Department of Electrical Engineering, EST, Moulay Ismail University of Meknes, Morocco
  • Abdelwahed Touati Laboratory of Complex Cyber Physical Systems (LCCPS), ENSAM, Hassan II University of Casablanca, Morocco
  • Nabila Rabbah Laboratory of Complex Cyber Physical Systems (LCCPS), ENSAM, Hassan II University of Casablanca, Morocco
Volume: 15 | Issue: 3 | Pages: 22459-22465 | June 2025 | https://doi.org/10.48084/etasr.10145

Received: 7 January 2025 | Revised: 23 February 2025 and 27 February 2025 | Accepted: 6 March 2025 | Online: 25 March 2025


Corresponding author: Abdelmajid Akil

Abstract

Robotic manipulators face significant control challenges in a wide range of industrial applications, where stability and reliability are essential for achieving operational objectives. This paper investigates nonlinear modeling and control strategies for a three Degree-of-Freedom (3-DOF) robot manipulator, focusing on dynamic complexities and employing advanced techniques like nonlinear backstepping design for trajectory tracking. The 3-DOF robot's nonlinear model is derived using Lagrange's equation. Subsequently, a backstepping control method is developed to manage the nonlinear behavior. Backstepping ensures precise trajectory tracking and global stability by systematically designing a Lyapunov function for each step, leading to a robust control law. The step-by-step nature of backstepping facilitates the design of controllers for 3-DOF robotic systems.  Each joint can be controlled separately while ensuring the overall stability of the system, making the design process more manageable. Simulation results demonstrate the ability of the proposed control method to achieve fast and accurate tracking of reference setpoints, even under moderate control input variations. These results highlight the effectiveness of the approach in enhancing both accuracy and stability.

Keywords:

three Degree-of-Freedom robot manipulator, backstepping, nonlinear control, Lyapunov function

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How to Cite

[1]
A. Akil, A. Nouaiti, A. Touati, and N. Rabbah, “Modeling and Nonlinear Backstepping Control of a 3-DoF Robot Manipulator”, Eng. Technol. Appl. Sci. Res., vol. 15, no. 3, pp. 22459–22465, Jun. 2025.

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Copyright (c) 2025 Abdelmajid Akil, Ayoub Nouaiti, Abdelwahed Touati, Nabila Rabbah

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