Saturated Output-Feedback Hybrid Reinforcement Learning Controller for Submersible Vehicles Guaranteeing Output Constraints

In this brief, we propose a new neuro-fuzzy reinforcement learning-based control (NFRLC) structure that allows autonomous underwater vehicles (AUVs) to follow a desired trajectory in large-scale complex environments precisely. The accurate tracking control problem is solved by a unique online NFRLC...

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Autores principales: Omid Elhaki, Khoshnam Shojaei, Declan Shanahan, Allahyar Montazeri
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Lenguaje:EN
Publicado: IEEE 2021
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Acceso en línea:https://doaj.org/article/72c0722e5e6e4738bb62e6cd1c26e1af
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spelling oai:doaj.org-article:72c0722e5e6e4738bb62e6cd1c26e1af2021-11-13T00:00:52ZSaturated Output-Feedback Hybrid Reinforcement Learning Controller for Submersible Vehicles Guaranteeing Output Constraints2169-353610.1109/ACCESS.2021.3113080https://doaj.org/article/72c0722e5e6e4738bb62e6cd1c26e1af2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9539163/https://doaj.org/toc/2169-3536In this brief, we propose a new neuro-fuzzy reinforcement learning-based control (NFRLC) structure that allows autonomous underwater vehicles (AUVs) to follow a desired trajectory in large-scale complex environments precisely. The accurate tracking control problem is solved by a unique online NFRLC method designed based on actor-critic (AC) structure. Integrating the NFRLC framework including an adaptive multilayer neural network (MNN) and interval type-2 fuzzy neural network (IT2FNN) with a high-gain observer (HGO), a robust smart observer-based system is set up to estimate the velocities of the AUVs, unknown dynamic parameters containing unmodeled dynamics, nonlinearities, uncertainties and external disturbances. By employing a saturation function in the design procedure and transforming the input limitations into input saturation nonlinearities, the risk of the actuator saturation is effectively reduced together with nonlinear input saturation compensation by the NFRLC strategy. A predefined funnel-shaped performance function is designed to attain certain prescribed output performance. Finally, stability study reveals that the entire closed-loop system signals are semi-globally uniformly ultimately bounded (SGUUB) and can provide prescribed convergence rate for the tracking errors so that the tracking errors approach to the origin evolving inside the funnel-shaped performance bound at the prescribed time.Omid ElhakiKhoshnam ShojaeiDeclan ShanahanAllahyar MontazeriIEEEarticleSaturation functionreinforcement learningprescribed performancehigh-gain observerinterval type-2 fuzzy neural networksmultilayer neural networksElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 136580-136592 (2021)
institution DOAJ
collection DOAJ
language EN
topic Saturation function
reinforcement learning
prescribed performance
high-gain observer
interval type-2 fuzzy neural networks
multilayer neural networks
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
spellingShingle Saturation function
reinforcement learning
prescribed performance
high-gain observer
interval type-2 fuzzy neural networks
multilayer neural networks
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Omid Elhaki
Khoshnam Shojaei
Declan Shanahan
Allahyar Montazeri
Saturated Output-Feedback Hybrid Reinforcement Learning Controller for Submersible Vehicles Guaranteeing Output Constraints
description In this brief, we propose a new neuro-fuzzy reinforcement learning-based control (NFRLC) structure that allows autonomous underwater vehicles (AUVs) to follow a desired trajectory in large-scale complex environments precisely. The accurate tracking control problem is solved by a unique online NFRLC method designed based on actor-critic (AC) structure. Integrating the NFRLC framework including an adaptive multilayer neural network (MNN) and interval type-2 fuzzy neural network (IT2FNN) with a high-gain observer (HGO), a robust smart observer-based system is set up to estimate the velocities of the AUVs, unknown dynamic parameters containing unmodeled dynamics, nonlinearities, uncertainties and external disturbances. By employing a saturation function in the design procedure and transforming the input limitations into input saturation nonlinearities, the risk of the actuator saturation is effectively reduced together with nonlinear input saturation compensation by the NFRLC strategy. A predefined funnel-shaped performance function is designed to attain certain prescribed output performance. Finally, stability study reveals that the entire closed-loop system signals are semi-globally uniformly ultimately bounded (SGUUB) and can provide prescribed convergence rate for the tracking errors so that the tracking errors approach to the origin evolving inside the funnel-shaped performance bound at the prescribed time.
format article
author Omid Elhaki
Khoshnam Shojaei
Declan Shanahan
Allahyar Montazeri
author_facet Omid Elhaki
Khoshnam Shojaei
Declan Shanahan
Allahyar Montazeri
author_sort Omid Elhaki
title Saturated Output-Feedback Hybrid Reinforcement Learning Controller for Submersible Vehicles Guaranteeing Output Constraints
title_short Saturated Output-Feedback Hybrid Reinforcement Learning Controller for Submersible Vehicles Guaranteeing Output Constraints
title_full Saturated Output-Feedback Hybrid Reinforcement Learning Controller for Submersible Vehicles Guaranteeing Output Constraints
title_fullStr Saturated Output-Feedback Hybrid Reinforcement Learning Controller for Submersible Vehicles Guaranteeing Output Constraints
title_full_unstemmed Saturated Output-Feedback Hybrid Reinforcement Learning Controller for Submersible Vehicles Guaranteeing Output Constraints
title_sort saturated output-feedback hybrid reinforcement learning controller for submersible vehicles guaranteeing output constraints
publisher IEEE
publishDate 2021
url https://doaj.org/article/72c0722e5e6e4738bb62e6cd1c26e1af
work_keys_str_mv AT omidelhaki saturatedoutputfeedbackhybridreinforcementlearningcontrollerforsubmersiblevehiclesguaranteeingoutputconstraints
AT khoshnamshojaei saturatedoutputfeedbackhybridreinforcementlearningcontrollerforsubmersiblevehiclesguaranteeingoutputconstraints
AT declanshanahan saturatedoutputfeedbackhybridreinforcementlearningcontrollerforsubmersiblevehiclesguaranteeingoutputconstraints
AT allahyarmontazeri saturatedoutputfeedbackhybridreinforcementlearningcontrollerforsubmersiblevehiclesguaranteeingoutputconstraints
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