Results 1 to 10 of about 703,458 (267)

H-Optimal Control in Coefficients for Dirichlet Parabolic Problems

Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Modelûvannâ, 2010
In the paper the Dirichlet optimal control problem associated with a linear parabolic equation the coefficients of which we take as controls in L1(Ω) has been studied. Since equations of this type can exhibit the Lavrentieff phenomenon and non-uniqueness
I. G. Balanenko, P. I. Kogut
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Optimal Control Problem for Non-linear Degenerate Parabolic Variation Inequality: Solvability and Attainability Issues

Journal of Optimization, Differential Equations and Their Applications, 2023
We investigate the optimal control problem with respect to coefficients of the degenerate parabolic variational inequality. Since problems of this type can have the Lavrentieff effect, we consider the optimal control problem in a class of so-called ...
Nina V. Kasimova, Olha P. Kupenko, Iryna M. Tsyganivska   +2 more
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Fictitious Controls and Approximation of an Optimal Control Problem for Perona-Malik Equation

Journal of Optimization, Differential Equations and Their Applications, 2022
We discuss the existence of solutions to an optimal control problem for the Cauchy-Neumann boundary value problem for the evolutionary Perona-Malik equations. The control variable v is taken as a distributed control.
Peter Kogut, Yaroslav Kohut, Rosanna Manzo   +2 more
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Complex-coefficient systems in control [PDF]

2017 American Control Conference (ACC), 2017
Complex-valued dynamics can be used for modeling rotationally invariant two-input two-output systems and bandpass systems when they are considered in the baseband. In a few instances, control design has been done in the complex domain, which facilitated analysis and synthesis.
Troeng, Olof, Bernhardsson, Bo, Rivetta, Claudio   +2 more
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Investigation of the Stability of the Ball and Beam by the PID Controller [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2021
The purpose of this research is to construct and investigate the stability of the ball and beam control system with PID coefficients derived from the simulation and compare them.
Mojtaba Hadipour, Ali Hosseinzadeh, Mohsen Sadidi   +2 more
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Defining control coefficients in non-ideal metabolic pathways [PDF]

Biophysical Chemistry, 1995
The extent to which an enzyme controls a flux has been defined as the effect on that flux of a small modulation of the activity of that enzyme divided by the magnitude of the modulation. We here show that in pathways with metabolic channelling or high enzyme concentrations and conserved moieties involving both enzymic and non-enzymic species, this ...
Kholodenko, B.N., Molenaar, D., Schuster, S., Heinrich, R., Westerhoff, H.V.   +4 more
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Introducing the Nonlinear State Control Algorithm of the Air Bearing Laboratory Simulator Based on the Gain Coefficients Dependent on the State Variables [PDF]

فصلنامه علوم و فناوری فضایی, 2023
In this article, a new approach has been presented in the design of a satellite's status controller using reaction wheels. First, a non-linear controller whose gains depend on the state variables at any moment is proposed.
Alireza Ahangarani Farahani, Amirhossain Adami, Hamed Arefkhani   +2 more
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Two Inverse Problems Solution by Feedback Tracking Control

Axioms, 2021
Two inverse ill-posed problems are considered. The first problem is an input restoration of a linear system. The second one is a restoration of time-dependent coefficients of a linear ordinary differential equation.
Vladimir Turetsky
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Determination of control coefficients in intact metabolic systems [PDF]

Biochemical Journal, 1994
The control structure of a metabolic system can in principle be determined without the need for purification of the component enzymes and study of their kinetic properties, provided that their activities can be perturbed by amounts sufficient to produce measurable changes in the steady-state variables, i.e.
A, Cornish-Bowden, J H, Hofmeyr
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An application of Phragmén–Lindelöf theorem to the existence of ground state solutions for the generalized Schrödinger equation with optimal control

Boundary Value Problems, 2020
In this paper, we develop optimal Phragmén–Lindelöf methods, based on the use of maximum modulus of optimal value of a parameter in a Schrödinger functional, by applying the Phragmén–Lindelöf theorem for a second-order boundary value problems with ...
Chaofeng Zhang, Rong Hu
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