Observer-based adaptive optimal control for unknown singularly perturbed nonlinear systems with input constraints

Z Fu, W Xie, S Rakheja, J Na - IEEE/CAA Journal of Automatica …, 2017 - ieeexplore.ieee.org
This paper introduces an observer-based adaptive optimal control method for unknown
singularly perturbed nonlinear systems with input constraints. First, a multi-time scales …

Adaptive optimal control of unknown nonlinear systems with different time scales

ZJ Fu, WF Xie, S Rakheja, DD Zheng - Neurocomputing, 2017 - Elsevier
The adaptive optimal control of unknown nonlinear system with different time scales is
considered in this paper. The commonly used singular perturbation theory (SPT) to solve …

Neural network-based adaptive tracking control for a class of nonlinear singularly perturbed systems

H Wang, C Yang, S Zhu - IEEE Access, 2019 - ieeexplore.ieee.org
In this paper, the neural network-based adaptive tracking control method is addressed for a
class of multi-input affine unknown nonlinear singularly perturbed systems. Based on the …

Neural-network-based adaptive control of uncertain MIMO singularly perturbed systems with full-state constraints

H Wang, C Yang, X Liu, L Zhou - IEEE Transactions on Neural …, 2021 - ieeexplore.ieee.org
This article investigates the tracking control problem for a class of nonlinear multi-input–multi-
output (MIMO) uncertain singularly perturbed systems (SPSs) with full-state constraints. The …

Identification and trajectory tracking control of nonlinear singularly perturbed systems

DD Zheng, WF Xie, T Chai, Z Fu - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
In this paper, a new identification and control scheme using multitime scale recurrent high-
order neural networks is proposed to control the singularly perturbed nonlinear systems with …

Reinforcement learning for robust adaptive control of partially unknown nonlinear systems subject to unmatched uncertainties

X Yang, H He, Q Wei, B Luo - Information Sciences, 2018 - Elsevier
This paper proposes a novel robust adaptive control strategy for partially unknown
continuous-time nonlinear systems subject to unmatched uncertainties. Initially, the robust …

Optimal output feedback control of nonlinear partially-unknown constrained-input systems using integral reinforcement learning

L Ren, G Zhang, C Mu - Neural Processing Letters, 2019 - Springer
The problem of output feedback optimal control of the partially-unknown nonlinear systems
with constrained-input is investigated in this paper. Firstly, a neural network observer is …

Observer-based adaptive control of uncertain nonlinear systems via neural networks

C Mu, Y Zhang, K Wang - IEEE Access, 2018 - ieeexplore.ieee.org
In this paper, a novel observer-based control strategy is proposed for a class of uncertain
continuous-time nonlinear systems based on the Hamilton-Jacobi-Bellman (HJB) equation …

Neuroadaptive control of saturated nonlinear systems with disturbance compensation

G Yang, J Yao, N Ullah - ISA transactions, 2022 - Elsevier
Extended state observer acting as a popular tool can estimate the system states and total
disturbances simultaneously. However, for extended-state-observer-based control of high …

Approximation-based disturbance observer approach for adaptive tracking of uncertain pure-feedback nonlinear systems with unmatched disturbances

HO Kim, SJ Yoo - International Journal of Systems Science, 2017 - Taylor & Francis
This paper presents an approximation-based nonlinear disturbance observer (NDO)
methodology for adaptive tracking of uncertain pure-feedback nonlinear systems with …