Transition Control of a Double-Inverted Pendulum System Using Sim2Real Reinforcement Learning

This study presents a sim2real reinforcement learning-based controller for transition control in a double-inverted pendulum system, addressing the limitations of traditional control methods that rely on precomputed trajectories and lack adaptability to strong external disturbances. By introducing th...

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Main Authors: Taegun Lee, Doyoon Ju, Young Sam Lee
Format: Article
Language:English
Published: MDPI AG 2025-02-01
Series:Machines
Subjects:
Online Access:https://www.mdpi.com/2075-1702/13/3/186
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author Taegun Lee
Doyoon Ju
Young Sam Lee
author_facet Taegun Lee
Doyoon Ju
Young Sam Lee
author_sort Taegun Lee
collection DOAJ
description This study presents a sim2real reinforcement learning-based controller for transition control in a double-inverted pendulum system, addressing the limitations of traditional control methods that rely on precomputed trajectories and lack adaptability to strong external disturbances. By introducing the novel concept of ‘transition control’, this research expands the scope of inverted pendulum studies to tackle the challenging task of navigating between multiple equilibrium points. To overcome the reality gap—a persistent challenge in sim2real transfer—a hardware-centered approach was employed, aligning the physical system’s mechanical design with high-fidelity dynamic equations derived from the Euler–Lagrange equation. This design eliminates the need for software-based corrections, ensuring consistent and robust system performance across simulated and real-world environments. Experimental validation demonstrates the controller’s ability to reliably execute all 12 transition scenarios within the double-inverted pendulum system. Additionally, it exhibits recovery characteristics, enabling the system to stabilize and return to equilibrium point even under severe disturbances.
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spelling doaj-art-1480d4e01b4545ddba49c8829aedd8402025-08-20T01:49:04ZengMDPI AGMachines2075-17022025-02-0113318610.3390/machines13030186Transition Control of a Double-Inverted Pendulum System Using Sim2Real Reinforcement LearningTaegun Lee0Doyoon Ju1Young Sam Lee2Department of Electrical and Computer Engineering, Inha University, Incheon 22212, Republic of KoreaDepartment of Electrical and Computer Engineering, Inha University, Incheon 22212, Republic of KoreaDepartment of Electrical and Computer Engineering, Inha University, Incheon 22212, Republic of KoreaThis study presents a sim2real reinforcement learning-based controller for transition control in a double-inverted pendulum system, addressing the limitations of traditional control methods that rely on precomputed trajectories and lack adaptability to strong external disturbances. By introducing the novel concept of ‘transition control’, this research expands the scope of inverted pendulum studies to tackle the challenging task of navigating between multiple equilibrium points. To overcome the reality gap—a persistent challenge in sim2real transfer—a hardware-centered approach was employed, aligning the physical system’s mechanical design with high-fidelity dynamic equations derived from the Euler–Lagrange equation. This design eliminates the need for software-based corrections, ensuring consistent and robust system performance across simulated and real-world environments. Experimental validation demonstrates the controller’s ability to reliably execute all 12 transition scenarios within the double-inverted pendulum system. Additionally, it exhibits recovery characteristics, enabling the system to stabilize and return to equilibrium point even under severe disturbances.https://www.mdpi.com/2075-1702/13/3/186reinforcement learningdouble-inverted pendulumsim2real transfertransition control
spellingShingle Taegun Lee
Doyoon Ju
Young Sam Lee
Transition Control of a Double-Inverted Pendulum System Using Sim2Real Reinforcement Learning
Machines
reinforcement learning
double-inverted pendulum
sim2real transfer
transition control
title Transition Control of a Double-Inverted Pendulum System Using Sim2Real Reinforcement Learning
title_full Transition Control of a Double-Inverted Pendulum System Using Sim2Real Reinforcement Learning
title_fullStr Transition Control of a Double-Inverted Pendulum System Using Sim2Real Reinforcement Learning
title_full_unstemmed Transition Control of a Double-Inverted Pendulum System Using Sim2Real Reinforcement Learning
title_short Transition Control of a Double-Inverted Pendulum System Using Sim2Real Reinforcement Learning
title_sort transition control of a double inverted pendulum system using sim2real reinforcement learning
topic reinforcement learning
double-inverted pendulum
sim2real transfer
transition control
url https://www.mdpi.com/2075-1702/13/3/186
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AT doyoonju transitioncontrolofadoubleinvertedpendulumsystemusingsim2realreinforcementlearning
AT youngsamlee transitioncontrolofadoubleinvertedpendulumsystemusingsim2realreinforcementlearning