Results 31 to 40 of about 927,941 (284)

Null controllability for a coupled system of degenerate/singular parabolic equations in nondivergence form

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2018
We deal with a control problem for a coupled system of two degenerate singular parabolic equations in non-divergence form with degeneracy and singularity appearing at an interior point of the space domain. In particular, we consider the well-posedness of
Jawad Salhi
doaj   +1 more source

Optimal Placement of Phasor Measurement Unit in Smart Grids Considering Multiple Constraints

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
The distribution of measurement noise is usually assumed to be Gaussian in the optimal phasor measurement unit (PMU) placement (OPP) problem. However, this is not always accurate in practice.
Tengpeng Chen   +4 more
doaj   +1 more source

Ingham type approach for uniform observability inequality of the semi-discrete coupled wave equations

open access: yesElectronic Journal of Differential Equations, 2020
This article concerns an observability inequality for a system of coupled wave equations for the continuous models as well as for the space semi-discrete finite difference approximations.
Dilberto da Silva Almeida Junior   +3 more
doaj  

Null Controllability of a Nonlinear Age Structured Model for a Two-Sex Population

open access: yesAbstract and Applied Analysis, 2021
This paper is devoted to study the null controllability properties of a nonlinear age and two-sex population dynamics structured model without spatial structure. Here, the nonlinearity and the couplage are at the birth level.
Amidou Traoré   +3 more
doaj   +1 more source

Nearly Linear-Phase 2-D Recursive Digital Filters Design Using Balanced Realization Model Reduction

open access: yesSignals, 2023
This paper presents a new method for the design of separable-denominator 2-D IIR filters with nearly linear phase in the passband. The design method is based on a balanced realization model reduction technique.
Abdussalam Omar   +2 more
doaj   +1 more source

Observational-interventional Bell inequalities

open access: yesPhysical Review A
Generalizations of Bell's theorem, particularly within quantum networks, are now being analyzed through the causal inference lens. However, the exploration of interventions, a central concept in causality theory, remains significantly unexplored.
Davide Poderini   +5 more
openaire   +2 more sources

H2 model order reduction of bilinear systems via linear matrix inequality approach

open access: yesIET Control Theory & Applications, 2023
This paper proposes an H2‐optimal model order reduction (MOR) method for bilinear systems based on the linear matrix inequality (LMI) approach. In this method, to reduce the computational complexity, at first, a reduced middle‐order approximation of the ...
Hasan Nasiri Soloklo, Nooshin Bigdeli
doaj   +1 more source

Li-Ion Battery Anode State of Charge Estimation and Degradation Monitoring Using Battery Casing via Unknown Input Observer

open access: yesEnergies, 2022
The anode state of charge (SOC) and degradation information pertaining to lithium-ion batteries (LIBs) is crucial for understanding battery degradation over time. This information about each cell in a battery pack can help prolong the battery pack’s life
Ashikur Rahman   +2 more
doaj   +1 more source

Observability Inequalities for the Heat Equation with Bounded Potentials on the Whole Space [PDF]

open access: yesSIAM Journal of Control and Optimization, 2019
In this paper we establish an observability inequality for the heat equation with bounded potentials on the whole space. Roughly speaking, such a kind of inequality says that the total energy of solutions can be controlled by the energy localized in a ...
Yueliang Duan, Lijuan Wang, Can Zhang
semanticscholar   +1 more source

Exact Null Controllability of KdV-Burgers Equation with Memory Effect Systems

open access: yesAbstract and Applied Analysis, 2012
This paper is concerned with exact null controllability analysis of nonlinear KdV-Burgers equation with memory. The proposed approach relies upon regression tool to prove controllability property of linearized KdV-Burgers equation via Carleman estimates.
Rajagounder Ravi Kumar   +2 more
doaj   +1 more source

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