Results 31 to 40 of about 3,373,832 (294)

Gap inequalities for non-convex mixed-integer quadratic programs [PDF]

open access: yes, 2011
Laurent and Poljak introduced a very general class of valid linear inequalities, called gap inequalities, for the max-cut problem. We show that an analogous class of inequalities can be defined for general non-convex mixed-integer quadratic programs ...
Galli, Laura   +8 more
core   +5 more sources

Fin-Rudder Joint Control Based on Improved Linear-Quadratic-Regulator Algorithm

open access: yesIEEE Access, 2022
Navigation accidents and disasters frequently occur when ships sail at sea owing to extreme weather, wind, and wave conditions. The disturbance of wind and waves affects the stability of the ship’s course and makes the ship roll violently.
Yuhan Zhao   +3 more
doaj   +1 more source

Robust Online Learning Method Based on Dynamical Linear Quadratic Regulator

open access: yesIEEE Access, 2019
In this paper, a novel algorithm is proposed for inferring online learning tasks efficiently. By a carefully designed scheme, the online learning problem is first formulated as a state feedback control problem for a series of finite-dimensional systems ...
Hanwen Ning   +3 more
doaj   +1 more source

Why “state” feedback?

open access: yes, 2008
We study the linear quadratic control problem from a representation-free point of view, and we show that this formulation brings forth two self-contained and original proofs of the optimality of state feedback control laws; these proofs which do not ...
I. Markovsky   +3 more
core   +2 more sources

Optimal Adaptive Sliding Mode Control for a Class of Nonlinear Affine Systems [PDF]

open access: yesControl and Optimization in Applied Mathematics
This paper presents an optimal robust adaptive technique for controlling a certain class of uncertain nonlinear affine systems. The proposed approach combines sliding mode control, a linear quadratic regulator for optimality, and gradient descent as an ...
Masoomeh Ebrahimipour   +2 more
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

High-Performance Robust Controller Design of Plug-In Hybrid Electric Vehicle for Frequency Regulation of Smart Grid Using Linear Matrix Inequality Approach

open access: yesIEEE Access, 2019
This paper proposes a high-performance and robust linear quadratic regulator-proportional integral derivative (LQR-PID) controller for frequency regulation in a two-area interconnected smart grid with a population of plug-in hybrid electric vehicles ...
Sajal Kumar Das   +5 more
doaj   +1 more source

Configuration‐Encoded Cell Alignment by Light‐Gated Silicon Photovoltaic Microcell Arrays

open access: yesAdvanced Functional Materials, EarlyView.
Light‐gated silicon photovoltaic microcells convert pulsed illumination into localized electrical cues. Arranging otherwise similar microcells into four‐lobed, six‐lobed, or circular patterns directs fibroblasts into corresponding local arrangements without wired stimulation.
Yifan Tao   +7 more
wiley   +1 more source

Robust servo linear quadratic regulator controller based on state compensation and velocity feedforward of the spherical robot: Theory and experimental verification

open access: yesInternational Journal of Advanced Robotic Systems, 2023
There are few studies on the lateral motion of spherical robots. In this article, a new algorithm is proposed to solve the problem of low control accuracy of the lateral motion.
Yixu Wang   +7 more
doaj   +1 more source

Multi‐Stimuli Responsive Angstrom‐Scale Two‐Dimensional Channels of Natural Layered Materials

open access: yesAdvanced Materials, EarlyView.
Å‐scale ion channels naturally formed within the interlayers of vermiculite clay enable ionic current modulation in response to mechanical, chemical, and electrical stimuli. Coupled pressure and electric fields induce reversible streaming current (Istream) polarity inversion, which is explained by a modified surface charge regulation model.
Raj Kumar Gogoi   +5 more
wiley   +1 more source

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