WOA-based Interval Type II Fuzzy Fractional-order Controller Design for a Two-Link Robot Arm

Jamshidi, F.; Vaghefi, M.

doi:10.22061/jecei.2019.5783.256

Document Type : Original Research Paper

Authors

F. Jamshidi ¹
M. Vaghefi ²

¹ Department of Electrical Engineering, Faculty of Engineering, Fasa University, Fasa, Iran

² Department of Electrical Engineering, Islamic Azad University, Shiraz Branch, Shiraz, Iran

10.22061/jecei.2019.5783.256

Abstract

Background and Objectives: A robot arm is a multi-input multi-output and non-linear system that has many industrial applications. Parameter uncertainties and external disturbances attenuate the performance of this system and a controller design is hence necessary to overcome them.
Methods: In this paper, the interval Type II Fuzzy fractional-order proportional integral differential (IT2FO-FPID) controller is designed to control a robot arm with 2 degrees of freedom (two-link robot arm). Whale optimization algorithm (WOA) is used to determine the optimal value of controller parameters. The performance of IT2FO-FPID is compared with PID, fractional-order PID (FOPID) and Fuzzy FOPID whose parameters are determined by WOA. The performance of IT2FO-FPID whose parameters are determined by WOA, genetic algorithm, and particle swarm optimization methods are compared.
Results: Quantitative and qualitative results of simulations indicate performance improvement with the IT2FO-FPID controller. The ability of WOA in optimizing the parameters of the IT2FO-FPID controller is demonstrated.
Conclusion: Sensitivity analysis and the study of the effect of parameter variations and disturbances confirm the robust performance of WOA-based IT2FO-FPID.

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Copyrights
©2019 The author(s). This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, as long as the original authors and source are cited. No permission is required from the authors or the publishers.
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Keywords

Main Subjects

Artificial Intelligence

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Journal of Electrical and Computer Engineering Innovations (JECEI)

WOA-based Interval Type II Fuzzy Fractional-order Controller Design for a Two-Link Robot Arm

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Volume 7, Issue 1
Winter and Spring 2019
Pages 69-82

WOA-based Interval Type II Fuzzy Fractional-order Controller Design for a Two-Link Robot Arm

References

References

Send comment about this article

Volume 7, Issue 1Winter and Spring 2019Pages 69-82

Volume 7, Issue 1
Winter and Spring 2019
Pages 69-82