Results 61 to 70 of about 61,566 (312)

Nonlinear Schr\"odinger equation on the half-line with nonlinear boundary condition

Electronic Journal of Differential Equations, 2015
WOS ...
Batal, Ahmet, Özsarı, Türker
openaire   +6 more sources

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

An Adaptive Human Pilot Model With Reaction Time Delay for Enhanced Adaptive Control in Piloted Systems

International Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley   +1 more source

Positive solutions of nonlinear fractional boundary value problems with Dirichlet boundary conditions

Electronic Journal of Qualitative Theory of Differential Equations, 2012
In this paper, we study the existence and multiplicity of positive solutions of a class of nonlinear fractional boundary value problems with  Dirichlet boundary conditions. By applying the fixed point theory on cones we establish a series of criteria for
Qingkai Kong, Min Wang
doaj   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Weak solutions for the p-Laplacian with a nonlinear boundary condition at resonance

Electronic Journal of Differential Equations, 2003
We study the existence of weak solutions to the equation $$ Delta_p u = |u|^{p-2} u+f(x,u) $$ with the nonlinear boundary condition $$ | abla u|^{p-2} frac{partial u}{partial u} = lambda |u|^{p-2} u -h(x,u),.
Sandra Martinez, Julio D. Rossi
doaj  

Existence of solutions to Sturm–Liouville boundary value problems

Electronic Journal of Qualitative Theory of Differential Equations
We study the solvability of Sturm–Liouville boundary value problems for $x''=f(t,x,x'), t\in(0,1)$. The nonlinearity can be defined on a bounded set and is required to be continuous on its subset.
Gabriela Mihaylova, Petio Kelevedjiev
doaj   +1 more source

Strictly convergent algorithm for an elliptic equation with nonlocal and nonlinear boundary conditions

Mathematical Modelling and Analysis, 2012
The paper describes a formally strictly convergent algorithm for solving a class of elliptic problems with nonlinear and nonlocal boundary conditions, which arise in modeling of the steady-state conductive-radiative heat transfer processes.
Karlis Birgelis, Uldis Raitums
doaj   +1 more source

Solution of Nonlinear Polarization Boundary Conditions

Electronic Journal of Boundary Elements, 2007
An efficient algorithm for solving multiple reaction electrochemical polarization equations is presented. The boundary integral formulation for the electric field (Laplace equation) conveniently provides a direct relationship between potential and current at the electrode surfaces, which can then be coupled to the nonlinear polarization boundary ...
E. Chisholm, L.J. Gray, G.E. Giles
openaire   +2 more sources