Results 11 to 20 of about 10,429,320 (302)

Nonlinear analysis and control of chemical reactors [PDF]

open access: yes, 1997
This thesis carries out a detailed study of a nonlinear spectral theory that is useful for modeling and controlling chemical reactors. The motivation for this work originates from a few reports which have demonstrated in the past that the nonlinear ...
Samardzjia, Nikola
core   +7 more sources

Nonlinear adaptive control using non-parametric Gaussian Process prior models [PDF]

open access: yes, 2002
Nonparametric Gaussian Process prior models, taken from Bayesian statistics methodology are used to implement a nonlinear adaptive control law. The expected value of a quadratic cost function is minimised, without ignoring the variance of the model ...
Sbarbaro, D., Murray-Smith, R.
core   +9 more sources

Correlation Analysis and Its Application on an Asymmetry Rotor Structure with Overhang

open access: yesApplied Sciences, 2021
Overhung rotors are widely used in the industrial field. However, compared with normal structure rotors, the prediction and control of overhung rotors cannot achieve good performance.
Shun Zhong   +3 more
doaj   +1 more source

Chaos and Bifurcation Control Using Nonlinear Recursive Controller [PDF]

open access: yes, 2002
Chaos and bifurcation control is achieved by nonlinear controller that is able to mitigate the characteristics of a class of nonlinear systems that are experiencing such phenomenon.
Zohdy, M. A., Harb, A. M.
core   +1 more source

Necessary optimality conditions for Lagrange problems involving ordinary control systems described by fractional Laplace operators [PDF]

open access: yes, 2020
In this paper, optimal control problems containing ordinary nonlinear control systems described by fractional Dirichlet and Dirichlet–Neumann Laplace operators and a nonlinear integral performance index are studied. Using smooth-convex maximum principle,
Kamocki, Rafał
core   +1 more source

A nonlinear control system with a Hilfer derivative and its optimization [PDF]

open access: yes, 2019
In this work, we consider a fractional optimal control problem (FOCP) containing a nonlinear control system, described by a differential equation involving a Hilfer derivative, and an integral cost functional.
Kamocki, Rafał
core   +1 more source

Adaptive NN output-feedback control for stochastic time-delay nonlinear systems with unknown control coefficients and perturbations [PDF]

open access: yes, 2016
This paper addresses the problem of adaptive output-feedback control for more general class of stochastic time-varying delay nonlinear systems with unknown control coefficients and perturbations.
Duan, Na, Min, Hui Fang Fang
core   +1 more source

Conditions for Existence of Second-Order and Third-Order Filters for Discrete Systems with Additive Noises

open access: yesMathematics, 2022
The problem of constructing functional optimal observers (filters) for stochastic control systems with additive noises in discrete time are studied in this work.
Mikhail Kamenshchikov
doaj   +1 more source

Mechanical Behaviors of Electrostatic Microbeams with Nonideal Supports

open access: yesShock and Vibration, 2020
Deviation of the actual system from the ideal supporting conditions caused by micromachining errors and manufacturing defects or the requirement of innovative design and optimization of microelectromechanical systems (MEMS) make the nonideal boundary in ...
Yunxia Chang   +3 more
doaj   +1 more source

Optimal control for a higher-order nonlinear parabolic equation describing crystal surface growth [PDF]

open access: yes, 2018
In this paper, we shall study the optimal control of the initial-boundary value problem of a higher-order nonlinear parabolic equation describing crystal surface growth.
Duan, Ning, Zhao, Xiaopeng
core   +1 more source

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