Actor–critic-based optimal tracking for partially unknown nonlinear discrete-time systems

B Kiumarsi, FL Lewis - IEEE transactions on neural networks …, 2014 - ieeexplore.ieee.org
This paper presents a partially model-free adaptive optimal control solution to the
deterministic nonlinear discrete-time (DT) tracking control problem in the presence of input …

Optimal tracking control of unknown discrete-time linear systems using input-output measured data

B Kiumarsi, FL Lewis… - IEEE transactions on …, 2015 - ieeexplore.ieee.org
In this paper, an output-feedback solution to the infinite-horizon linear quadratic tracking
(LQT) problem for unknown discrete-time systems is proposed. An augmented system …

A review of fixed switching frequency current control techniques for switched reluctance machines

S Dhale, B Nahid-Mobarakeh, A Emadi - IEEE Access, 2021 - ieeexplore.ieee.org
By the virtue of its highly nonlinear magnetic characteristics, the Switched Reluctance
Machine (SRM) poses a formidable challenge for digital current regulators operating at a …

Optimal tracking current control of switched reluctance motor drives using reinforcement Q-learning scheduling

H Alharkan, S Saadatmand, M Ferdowsi… - IEEE Access, 2021 - ieeexplore.ieee.org
In this article, a novel Q-learning scheduling method for the current controller of a switched
reluctance motor (SRM) drive is investigated. The Q-learning algorithm is a class of …

Optimal control of nonlinear discrete time-varying systems using a new neural network approximation structure

B Kiumarsi, FL Lewis, DS Levine - Neurocomputing, 2015 - Elsevier
In this paper motivated by recently discovered neurocognitive models of mechanisms in the
brain, a new reinforcement learning (RL) method is presented based on a novel critic neural …

Output‐feedback H quadratic tracking control of linear systems using reinforcement learning

R Moghadam, FL Lewis - International Journal of Adaptive …, 2019 - Wiley Online Library
This paper presents an online learning algorithm based on integral reinforcement learning
(IRL) to design an output‐feedback (OPFB) H∞ tracking controller for partially unknown …

Improving transient performance of discrete‐time model reference adaptive control architectures

KM Dogan, T Yucelen, WM Haddad… - International Journal of …, 2020 - Wiley Online Library
Discrete‐time adaptive control algorithms can be executed directly in embedded code unlike
their continuous‐time counterparts, which require discretization. However, their designs …

Neural network-based optimal tracking control of continuous-time uncertain nonlinear system via reinforcement learning

J Zhao - Neural Processing Letters, 2020 - Springer
In this note, optimal tracking control for uncertain continuous-time nonlinear system is
investigated by using a novel reinforcement learning (RL) scheme. The uncertainty here …

Neural network‐based optimal tracking control for partially unknown discrete‐time non‐linear systems using reinforcement learning

J Zhao, P Vishal - IET Control Theory & Applications, 2021 - Wiley Online Library
Otimal tracking control of discrete‐time non‐linear systems is investigated in this paper. The
system drift dynamics is unknown in this investigation. Firstly, in the light of the discrete‐time …

Adaptive optimal control of unknown discrete-time linear systems with guaranteed prescribed degree of stability using reinforcement learning

SE Razavi, MA Moradi, S Shamaghdari… - International Journal of …, 2022 - Springer
This paper proposes a model-free solution for solving the optimal regulation problem for a
discrete-time linear time-invariant system that unlike previous methods, presents a …