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All Journal Malikussaleh Journal of Mechanical Science Technology
Yuli Mauliza
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Automotive Engineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Optimization of Multi-Loop PI Control for a 6-DOF Robotic Arm Using Looptune in MATLAB/Simulink Yuli Mauliza; Ghiyalti Novilia; M. Basyir; Muhammad Isra
Malikussaleh Journal of Mechanical Science and Technology Vol. 9 No. 2 (2025): Malikussaleh Journal of Mechanical Science and Technology (MJMST)
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v9i2.25007

Abstract

This study discusses the tuning of a multi-loop control system based on Proportional–Integral (PI) controllers for a six-degree-of-freedom (6-DOF) robotic arm. Each joint is controlled individually but operates in coordination to achieve precise motion. A simultaneous tuning method using the looptune function and the slTuner interface in MATLAB is employed to optimize all six loops simultaneously, considering response time, MIMO stability, and minimal cross-coupling. Simulation results in the Simulink–Simscape model show that this method produces faster, more stable responses with reduced overshoot compared to conventional tuning. The implementation of a 2-DOF controller also eliminates overshoot and improves the performance of the Bicep joint, resulting in smoother and more accurate trajectory tracking.
Co-Authors Ghiyalti Novilia M. Basyir Muhammad Isra