A survey on iterative learning control with randomly varying trial lengths: Model, synthesis, and convergence analysis

D Shen, X Li - Annual Reviews in Control, 2019 - Elsevier
The nonuniform trial length problem, which causes information dropout in learning, is very
common in various control systems such as robotics and motion control systems. This paper …

Iterative learning control with incomplete information: A survey

D Shen - IEEE/CAA Journal of Automatica Sinica, 2018 - ieeexplore.ieee.org
This paper conducts a survey on iterative learning control (ILC) with incomplete information
and associated control system design, which is a frontier of the ILC field. The incomplete …

An iterative learning control approach for linear systems with randomly varying trial lengths

X Li, JX Xu, D Huang - IEEE Transactions on Automatic Control, 2013 - ieeexplore.ieee.org
This technical note addresses an iterative learning control (ILC) design problem for discrete-
time linear systems where the trial lengths could be randomly varying in the iteration …

Adaptive learning control for nonlinear systems with randomly varying iteration lengths

D Shen, JX Xu - IEEE transactions on neural networks and …, 2018 - ieeexplore.ieee.org
This paper proposes adaptive iterative learning control (ILC) schemes for continuous-time
parametric nonlinear systems with iteration lengths that randomly vary. As opposed to the …

On almost sure and mean square convergence of P-type ILC under randomly varying iteration lengths

D Shen, W Zhang, Y Wang, CJ Chien - Automatica, 2016 - Elsevier
This note proposes convergence analysis of iterative learning control (ILC) for discrete-time
linear systems with randomly varying iteration lengths. No prior information is required on …

Iterative learning control of a drop foot neuroprosthesis—Generating physiological foot motion in paretic gait by automatic feedback control

T Seel, C Werner, J Raisch, T Schauer - Control Engineering Practice, 2016 - Elsevier
Many stroke patients suffer from the drop foot syndrome, which is characterized by a limited
ability to lift the foot and leads to a pathological gait. We consider treatment of this syndrome …

Noisy-output-based direct learning tracking control with Markov nonuniform trial lengths using adaptive gains

D Shen, SS Saab - IEEE transactions on automatic control, 2021 - ieeexplore.ieee.org
In this article, a noisy-output-based direct learning tracking control is proposed for stochastic
linear systems with nonuniform trial lengths. The iteration-varying trial length is modeled …

Iterative learning control for nonlinear dynamic systems with randomly varying trial lengths

X Li, JX Xu, D Huang - … Journal of Adaptive Control and Signal …, 2015 - Wiley Online Library
In this paper, we introduce an iterative learning control (ILC) scheme based on an iteratively
moving average operator for nonlinear dynamic systems with randomly varying trial lengths …

Iterative learning control for discrete nonlinear systems with randomly iteration varying lengths

D Shen, W Zhang, JX Xu - Systems & Control Letters, 2016 - Elsevier
This note proposes ILC for discrete-time affine nonlinear systems with randomly iteration
varying lengths. No prior information on the probability distribution of random iteration length …

Iterative learning control for time-varying systems subject to variable pass lengths: Application to robot manipulators

J Shi, J Xu, J Sun, Y Yang - IEEE Transactions on Industrial …, 2019 - ieeexplore.ieee.org
In this article, the iterative learning control (ILC) problem is investigated for a class of
stochastic time-varying systems with variable pass lengths. The randomness of the pass …