Data-Driven Robust Control Using Reinforcement Learning

This paper proposes a robust control design method using reinforcement learning for controlling partially-unknown dynamical systems under uncertain conditions. The method extends the optimal reinforcement learning algorithm with a new learning technique based on the robust control theory. By learnin...

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Main Authors: Phuong D. Ngo, Miguel Tejedor, Fred Godtliebsen
Format: Article
Language:English
Published: MDPI AG 2022-02-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/12/4/2262
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author Phuong D. Ngo
Miguel Tejedor
Fred Godtliebsen
author_facet Phuong D. Ngo
Miguel Tejedor
Fred Godtliebsen
author_sort Phuong D. Ngo
collection DOAJ
description This paper proposes a robust control design method using reinforcement learning for controlling partially-unknown dynamical systems under uncertain conditions. The method extends the optimal reinforcement learning algorithm with a new learning technique based on the robust control theory. By learning from the data, the algorithm proposes actions that guarantee the stability of the closed-loop system within the uncertainties estimated also from the data. Control policies are calculated by solving a set of linear matrix inequalities. The controller was evaluated using simulations on a blood glucose model for patients with Type 1 diabetes. Simulation results show that the proposed methodology is capable of safely regulating the blood glucose within a healthy level under the influence of measurement and process noises. The controller has also significantly reduced the post-meal fluctuation of the blood glucose. A comparison between the proposed algorithm and the existing optimal reinforcement learning algorithm shows the improved robustness of the closed-loop system using our method.
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spelling doaj.art-af6bed5de2f44137929e46fb13c608fe2023-11-23T18:41:58ZengMDPI AGApplied Sciences2076-34172022-02-01124226210.3390/app12042262Data-Driven Robust Control Using Reinforcement LearningPhuong D. Ngo0Miguel Tejedor1Fred Godtliebsen2Norwegian Centre for E-Health Research, 9019 Tromsø, NorwayNorwegian Centre for E-Health Research, 9019 Tromsø, NorwayDepartment of Mathematics and Statistics, Faculty of Science and Technology, UiT The Arctic University of Norway, 9019 Tromsø, NorwayThis paper proposes a robust control design method using reinforcement learning for controlling partially-unknown dynamical systems under uncertain conditions. The method extends the optimal reinforcement learning algorithm with a new learning technique based on the robust control theory. By learning from the data, the algorithm proposes actions that guarantee the stability of the closed-loop system within the uncertainties estimated also from the data. Control policies are calculated by solving a set of linear matrix inequalities. The controller was evaluated using simulations on a blood glucose model for patients with Type 1 diabetes. Simulation results show that the proposed methodology is capable of safely regulating the blood glucose within a healthy level under the influence of measurement and process noises. The controller has also significantly reduced the post-meal fluctuation of the blood glucose. A comparison between the proposed algorithm and the existing optimal reinforcement learning algorithm shows the improved robustness of the closed-loop system using our method.https://www.mdpi.com/2076-3417/12/4/2262reinforcement learningrobust controldata-driven
spellingShingle Phuong D. Ngo
Miguel Tejedor
Fred Godtliebsen
Data-Driven Robust Control Using Reinforcement Learning
Applied Sciences
reinforcement learning
robust control
data-driven
title Data-Driven Robust Control Using Reinforcement Learning
title_full Data-Driven Robust Control Using Reinforcement Learning
title_fullStr Data-Driven Robust Control Using Reinforcement Learning
title_full_unstemmed Data-Driven Robust Control Using Reinforcement Learning
title_short Data-Driven Robust Control Using Reinforcement Learning
title_sort data driven robust control using reinforcement learning
topic reinforcement learning
robust control
data-driven
url https://www.mdpi.com/2076-3417/12/4/2262
work_keys_str_mv AT phuongdngo datadrivenrobustcontrolusingreinforcementlearning
AT migueltejedor datadrivenrobustcontrolusingreinforcementlearning
AT fredgodtliebsen datadrivenrobustcontrolusingreinforcementlearning