Results 41 to 50 of about 1,463,226 (220)

Malliavin Calculus and Its Application to Robust Optimal Investment for an Insider

open access: yesMathematics, 2023
In the theory of portfolio selection, there are few methods that effectively address the combined challenge of insider information and model uncertainty, despite numerous methods proposed for each individually.
Chao Yu, Yuhan Cheng
doaj   +1 more source

Robust controllability of two-qubit Hamiltonian dynamics [PDF]

open access: yesPhys. Rev. A 100, 042305 (2019), 2019
Quantum gates (unitary gates) on physical systems are usually implemented by controlling the Hamiltonian dynamics. When full descriptions of the Hamiltonians parameters is available, the set of implementable quantum gates is easily characterised by quantum control theory.
arxiv   +1 more source

Electromechanical coupling modeling and analysis of piezoelectric damping laminated structures based on zig-zag hypothesis

open access: yesXibei Gongye Daxue Xuebao, 2022
Based on the zig-zag theory and Hamiltonian principle, the electromechanical coupling dynamic finite element(FE) model of piezoelectric damping laminated structure is established, the natural frequency and loss factor of the structure is accurately ...
WANG Xiong   +3 more
doaj   +1 more source

Hybrid Method for Constrained and Unconstrained Trajectory Optimization of Space Transportation

open access: yesJournal of Aerospace Technology and Management, 2023
In this research, a new method named δ to solve non-linear constrained and un constrained optimal control problems for trajectory optimization was proposed.
Iman Shafieenejad
doaj  

Port-Hamiltonian Control of GFM-VSCs With Robust Stable and Uniform Error Dynamics

open access: yesIEEE Access, 2023
In this paper, a grid-forming (GFM) control is developed based on the nonlinear Port-Hamiltonian (PH) system theory to systematically achieve tracking control and Lyapunov-based stability by considering the power flow dynamic, voltage and current ...
Duo Wang
doaj   +1 more source

PID Passivity-Based Control of Port-Hamiltonian Systems

open access: yesIEEE Transactions on Automatic Control, 2018
In this note, we address the problem of stabilization of port-Hamiltonian systems via the ubiquitous proportional-integral-derivative (PID) controller.
Meng Zhang   +4 more
semanticscholar   +1 more source

A minimally invasive neurostimulation method for controlling abnormal synchronisation in the neuronal activity. [PDF]

open access: yesPLoS Computational Biology, 2018
Many collective phenomena in Nature emerge from the -partial- synchronisation of the units comprising a system. In the case of the brain, this self-organised process allows groups of neurons to fire in highly intricate partially synchronised patterns and
Malbor Asllani   +2 more
doaj   +1 more source

Stability and Stabilization of Infinite-dimensional Linear Port-Hamiltonian Systems [PDF]

open access: yesEvol. Equ. Control Theory 3 (2014), no. 2, 207-229, 2013
Stability and stabilization of linear port-Hamiltonian systems on infinite-dimensional spaces are investigated. This class is general enough to include models of beams and waves as well as transport and Schr\"odinger equations with boundary control and observation.
arxiv   +1 more source

Lyapunov-based fixed-time stabilization control of quantum systems

open access: yesJournal of Automation and Intelligence, 2022
In this paper, we consider the fixed-time stabilization control problem of quantum systems modeled by Schrödinger equations. Firstly, the Lyapunov-based fixed-time stability criterion is extended to finite-dimensional closed quantum systems in the form ...
Xiaolei Li, Changyun Wen, Jiange Wang
doaj  

Deterministic Epidemic Models for Ebola Infection with Time-Dependent Controls

open access: yesDiscrete Dynamics in Nature and Society, 2020
In this paper, we have studied epidemiological models for Ebola infection using nonlinear ordinary differential equations and optimal control theory.
Eric Okyere   +3 more
doaj   +1 more source

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