Results 91 to 100 of about 3,997,941 (282)
Characteristic initial value problems for integrable hyperbolic reductions of Einstein's equations
, 2003 A unified general approach is presented for construction of solutions of the characteristic initial value problems for various integrable hyperbolic reductions of Einstein's equations for space-times with two commuting isometries in General Relativity ...
Alekseev, G. A.
core +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 +3 more
wiley +1 more source
Initial-value problems for hybrid Hadamard fractional differential equations
Electronic Journal of Differential Equations, 2014 In this article, we discuss the existence of solutions for an initial-value problem of nonlinear hybrid differential equations of Hadamard type. The main result is proved by means of a fixed point theorem due to Dhage.
Bashir Ahmad, Sotiris K. Ntouyas
doaj
Lucas polynomials semi-analytic solution for fractional multi-term initial value problems
Advances in Difference Equations, 2019 Herein, we use the generalized Lucas polynomials to find an approximate numerical solution for fractional initial value problems (FIVPs). The method depends on the operational matrices for fractional differentiation and integration of generalized Lucas ...
Mahmoud M. Mokhtar, Amany S. Mohamed
doaj +1 more source
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
Nonlinear initial boundary-value problems with Riesz fractional derivative
Electronic Journal of Differential Equations, 2015 We consider an initial boundary-value problem for a nonlinear partial differential equation with fractional derivative of Riesz type on a half-line.
Martin P. Arciga-Alejandre
doaj
INITIAL AND BOUNDARY VALUE PROBLEMS FOR DIFFERENCE EQUATIONS [PDF]
We consider initial and boundary value problems for linear nonhomogeneous difference equations with constant coefficients. For such problems we compute the numerical values of the solutions using the discrete deconvolution.
Mircea I CÎRNU
core
A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller
International Journal of Adaptive Control and Signal Processing, EarlyView.Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg +5 more
wiley +1 more source
On the solutions of a nonlinear system of q-difference equations
Boundary Value ProblemsIn this paper, we examine the existence and uniqueness of solutions for a system of the first-order q-difference equations with multi-point and q-integral boundary conditions using various fixed point (fp) theorems.
Nihan Turan +2 more
doaj +1 more source
Initial-Boundary Value Problems for Linear and Soliton PDEs
, 2002 Evolution PDEs for dispersive waves are considered in both linear and nonlinear integrable cases, and initial-boundary value problems associated with them are formulated in spectral space.
Degasperis, A. +2 more
core +1 more source