Fuzzy-Based Super-Twisting Sliding Mode Stabilization Control for Under-Actuated Rotary Inverted Pendulum Systems

This paper considers the stabilization problem for under-actuated rotary inverted pendulum systems (RotIPS) via a fuzzy-based continuous sliding mode control approach. Various sliding mode control (SMC) methods have been proposed for stabilizing the under-actuated RotIPS. However, there are two main...

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Main Authors: Ngo Phong Nguyen, Hyondong Oh, Yoonsoo Kim, Jun Moon, Jun Yang, Wen-Hua Chen
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9214529/
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author Ngo Phong Nguyen
Hyondong Oh
Yoonsoo Kim
Jun Moon
Jun Yang
Wen-Hua Chen
author_facet Ngo Phong Nguyen
Hyondong Oh
Yoonsoo Kim
Jun Moon
Jun Yang
Wen-Hua Chen
author_sort Ngo Phong Nguyen
collection DOAJ
description This paper considers the stabilization problem for under-actuated rotary inverted pendulum systems (RotIPS) via a fuzzy-based continuous sliding mode control approach. Various sliding mode control (SMC) methods have been proposed for stabilizing the under-actuated RotIPS. However, there are two main drawbacks of these SMC approaches. First, the existing SMCs have a discontinuous structure; therefore, their control systems suffer from the chattering problem. Second, a complete proof of closed-loop system stability has not been provided. To address these two limitations, we propose a fuzzy-based (continuous) super-twisting stabilization algorithm (FBSTSA) for the under-actuated RotIPS. We first introduce a new sliding surface, which is designed to resolve the under-actuation problem, by combining the fully-actuated (rotary arm) and the under-actuated (pendulum) variables to define one sliding surface. Then, together with the proposed sliding surface, we develop the FBSTSA, where the corresponding control gains are adjusted based on a fuzzy logic scheme. Note that the proposed FBSTSA is continuous owing to the modified super-twisting approach, which can reduce the chattering and enhance the control performance. With the proposed FBSTSA, we show that the sliding variable can reach zero in finite time and then the closed-loop system state converges to zero asymptotically. Various simulation and experimental results are provided to demonstrate the effectiveness of the proposed FBSTSA. In particular, (i) compared with the existing SMC approaches, chattering is alleviated and better stabilization is achieved; and (ii) the robustness of the closed-loop system (with the proposed FBSTSA) is guaranteed under system uncertainties and external disturbances.
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spelling doaj.art-218656568b944c51a79296ff6f4dd6e32022-12-22T03:47:00ZengIEEEIEEE Access2169-35362020-01-01818507918509210.1109/ACCESS.2020.30290959214529Fuzzy-Based Super-Twisting Sliding Mode Stabilization Control for Under-Actuated Rotary Inverted Pendulum SystemsNgo Phong Nguyen0https://orcid.org/0000-0003-4944-545XHyondong Oh1https://orcid.org/0000-0002-1051-9477Yoonsoo Kim2Jun Moon3https://orcid.org/0000-0002-8877-9519Jun Yang4https://orcid.org/0000-0002-4290-9568Wen-Hua Chen5https://orcid.org/0000-0003-3356-2889School of Mechanical, Aerospace and Nuclear Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South KoreaSchool of Mechanical, Aerospace and Nuclear Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, South KoreaDepartment of Aerospace and Software Engineering, Gyeongsang National University, Jinju, South KoreaDepartment of Electrical Engineering, Hanyang University, Seoul, South KoreaDepartment of Aeronautical and Automotive Engineering, Loughborough University, Loughborough, U.K.Department of Aeronautical and Automotive Engineering, Loughborough University, Loughborough, U.K.This paper considers the stabilization problem for under-actuated rotary inverted pendulum systems (RotIPS) via a fuzzy-based continuous sliding mode control approach. Various sliding mode control (SMC) methods have been proposed for stabilizing the under-actuated RotIPS. However, there are two main drawbacks of these SMC approaches. First, the existing SMCs have a discontinuous structure; therefore, their control systems suffer from the chattering problem. Second, a complete proof of closed-loop system stability has not been provided. To address these two limitations, we propose a fuzzy-based (continuous) super-twisting stabilization algorithm (FBSTSA) for the under-actuated RotIPS. We first introduce a new sliding surface, which is designed to resolve the under-actuation problem, by combining the fully-actuated (rotary arm) and the under-actuated (pendulum) variables to define one sliding surface. Then, together with the proposed sliding surface, we develop the FBSTSA, where the corresponding control gains are adjusted based on a fuzzy logic scheme. Note that the proposed FBSTSA is continuous owing to the modified super-twisting approach, which can reduce the chattering and enhance the control performance. With the proposed FBSTSA, we show that the sliding variable can reach zero in finite time and then the closed-loop system state converges to zero asymptotically. Various simulation and experimental results are provided to demonstrate the effectiveness of the proposed FBSTSA. In particular, (i) compared with the existing SMC approaches, chattering is alleviated and better stabilization is achieved; and (ii) the robustness of the closed-loop system (with the proposed FBSTSA) is guaranteed under system uncertainties and external disturbances.https://ieeexplore.ieee.org/document/9214529/Asymptotic stabilityfinite-time stabilityfuzzy-based super-twisting sliding mode controlrotary inverted pendulum systemstabilization control
spellingShingle Ngo Phong Nguyen
Hyondong Oh
Yoonsoo Kim
Jun Moon
Jun Yang
Wen-Hua Chen
Fuzzy-Based Super-Twisting Sliding Mode Stabilization Control for Under-Actuated Rotary Inverted Pendulum Systems
IEEE Access
Asymptotic stability
finite-time stability
fuzzy-based super-twisting sliding mode control
rotary inverted pendulum system
stabilization control
title Fuzzy-Based Super-Twisting Sliding Mode Stabilization Control for Under-Actuated Rotary Inverted Pendulum Systems
title_full Fuzzy-Based Super-Twisting Sliding Mode Stabilization Control for Under-Actuated Rotary Inverted Pendulum Systems
title_fullStr Fuzzy-Based Super-Twisting Sliding Mode Stabilization Control for Under-Actuated Rotary Inverted Pendulum Systems
title_full_unstemmed Fuzzy-Based Super-Twisting Sliding Mode Stabilization Control for Under-Actuated Rotary Inverted Pendulum Systems
title_short Fuzzy-Based Super-Twisting Sliding Mode Stabilization Control for Under-Actuated Rotary Inverted Pendulum Systems
title_sort fuzzy based super twisting sliding mode stabilization control for under actuated rotary inverted pendulum systems
topic Asymptotic stability
finite-time stability
fuzzy-based super-twisting sliding mode control
rotary inverted pendulum system
stabilization control
url https://ieeexplore.ieee.org/document/9214529/
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