Results 31 to 40 of about 773,209 (312)

Robust Control for the Segway with Unknown Control Coefficient and Model Uncertainties [PDF]

open access: yesSensors, 2016
The Segway, which is a popular vehicle nowadays, is an uncertain nonlinear system and has an unknown time-varying control coefficient. Thus, we should consider the unknown time-varying control coefficient and model uncertainties to design the controller.
Byung Kim, Bong Park
openaire   +4 more sources

On existence of optimal controls in coecients for ill-posed nonlinear elliptic Dirichlet boundary value problems with anisotropic p-Laplacian

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2016
We study a Dirichlet optimal control problem for a nonlinear elliptic anisotropic p-Laplace equation with control and state constraints. The matrix-valued coecients we take as controls and in the linear part of dierential operator we consider coecients ...
O. P. Kupenko
doaj   +1 more source

ON APPROXIMATION OF STATE-CONSTRAINED OPTIMAL CONTROL PROBLEM IN COEFFICIENTS FOR p-BIHARMONIC EQUATION

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2018
We study a Dirichlet-Navier optimal design problem for a quasi-linear mono- tone p-biharmonic equation with control and state constraints. The coecient of the p-biharmonic operator we take as a design variable in BV ( )\L1( ).
Peter I. Kogut, Olha P. Kupenko
doaj   +1 more source

State Feedback Stabilization for a Class of Upper-Triangular Stochastic Nonlinear Systems with Time-Varying Control Coefficients

open access: yes, 2022
The problem explored in this article concerns the stability of the state feedback control of the upper-triangular stochastic nonlinear systems whose control coefficients are time-varying.
Xiaoyu Xu, Xixi Sun, Haisheng Yu
core   +1 more source

Polynomial Stabilization with Bounds on the Controller Coefficients∗∗##

open access: yesIFAC-PapersOnLine, 2015
Let b/a be a strictly proper reduced rational transfer function, with a monic. Consider the problem of designing a controller y/x, with deg(y) < deg(x) < deg(a) – 1 and x monic, subject to lower and upper bounds on the coefficients of y and x, so that the poles of the closed loop transfer function, that is the roots (zeros) of ax + by, are, if possible,
Eaton, J.   +3 more
openaire   +2 more sources

On relaxation of state-constrained optimal control problem in coefficients for biharmonic equation

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2015
We study a Dirichlet optimal control problem for biharmonic equation withcontrol and state constraints. The coecient of the biharmonic operator, the weightu, we take as a control in L1(Ω).
P. I. Kogut, L. V. Voloshko
doaj   +1 more source

On the problem of optimal control in the coefficients of an elliptic equation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
In this paper we consider the optimal control problem for linear elliptic equations of the second order. Control functions are included in the coefficients of the equation for the state, including the coefficients of the highest derivatives.
Rafig K Tagiev, Rena S Kasimova
doaj   +1 more source

SHAPE STABILITY OF OPTIMAL CONTROL PROBLEMS IN COEFFICIENTS FOR COUPLED SYSTEM OF HAMMERSTEIN TYPE

open access: yesVìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2014
In this paper we consider an optimal control problem (OCP) for the coupledsystem of a nonlinear monotone Dirichlet problem with matrix-valued L∞(Ω;RN×N)-controls in coecients and a nonlinear equation of Hammerstein type, where solution nonlinearly ...
P. I. Kogut, O. P. Kupenko
doaj   +1 more source

On an Optimal -Control Problem in Coefficients for Linear Elliptic Variational Inequality

open access: yesAbstract and Applied Analysis, 2013
We consider optimal control problems for linear degenerate elliptic variational inequalities with homogeneous Dirichlet boundary conditions. We take the matrix-valued coefficients in the main part of the elliptic operator as controls in .
Olha P. Kupenko, Rosanna Manzo
doaj   +1 more source

Light Control of the Diffusion Coefficient of Active Fluids [PDF]

open access: yesJournal of Fluids Engineering, 2020
Abstract Active fluids refer to the fluids that contain self-propelled particles such as bacteria or microalgae, whose properties differ fundamentally from the passive fluids. Such particles often exhibit an intermittent motion, with high-motility “run” periods broken by low-motility “tumble” periods.
Vourc'h, Thomas   +2 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy