Results 21 to 30 of about 9,418,765 (294)

Fractional‐order backstepping strategy for fractional‐order model of COVID‐19 outbreak [PDF]

open access: yesMathematical Methods in the Applied Sciences, 2021
The coronavirus disease (COVID‐19) pandemic has impacted many nations around the world. Recently, new variant of this virus has been identified that have a much higher rate of transmission. Although vaccine production and distribution are currently underway, non‐pharmacological interventions are still being implemented as an important and fundamental ...
Amir Veisi, Hadi Delavari
openaire   +3 more sources

Adaptive Control of Milling Forces under Fractional Order Holds [PDF]

open access: yes, 2007
This paper introduces a novel discrete-time modelreference based control of the tool-work-piece interaction force in a milling process. The novelty of the scheme relies on the use of a fractional order hold (FROH) instead of a traditional zero order hold
De la Sen Parte, Manuel   +1 more
core   +3 more sources

Unitary fractional-order derivative operators for quantum computation

open access: yes, 2021
Along with recent progresses in quantum computation technologies, researchers have addressed practical computational supremacies of quantum computers. The research works in the quantum computation domain mainly focus on progressive quantum algorithms and
Alagoz B.B., Alagoz S.
core   +1 more source

On Passivity of Fractional Order Systems [PDF]

open access: yesSIAM Journal on Control and Optimization, 2019
We generalize notions of passivity and dissipativity to fractional order systems. Similar to integer order systems, we show that the proposed definitions generate analogous stability and compositionality properties for fractional order systems as well.
Mohsen Rakhshan   +2 more
openaire   +3 more sources

Stabilization of a fractional-order chain of integrators: a contraction-based approach [PDF]

open access: yes, 2013
In this paper, stabilization of a chain of fractional-order integrators is attempted. The stability is proved using contraction analysis.
SPURGEON, S   +8 more
core   +1 more source

Fractional variational problems depending on indefinite integrals [PDF]

open access: yes, 2012
We obtain necessary optimality conditions for variational problems with a Lagrangian depending on a Caputo fractional derivative, a fractional and an indefinite integral.
Pooseh, Shakoor   +8 more
core   +1 more source

Fractional calculus of periodic distributions [PDF]

open access: yes, 2011
Two approaches for defining fractional derivatives of periodic distributions are presented. The first is a distributional version of the Weyl fractional derivative in which a derivative of arbitrary order of a periodic distribution is defined via Fourier
Lamb, Wilson   +5 more
core   +4 more sources

Analysis of discrete time schemes for milling forces control under fractional order holds [PDF]

open access: yes, 2013
In this paper, discrete time model reference control schemes for practical milling using different discretization of the continuous-time plant are presented. First, a basic controller scheme is addressed where a fractional order hold with pre-fixed value
De la Sen, Manuel   +11 more
core   +1 more source

Fractional-order inverse filters revisited: Equivalence with fractional-order controllers

open access: yesMicroelectronics Journal, 2023
The equivalence of fractional-order inverse filters with fractional-order controllers is demonstrated in this work. This is achieved by appropriately rewriting the filters transfer functions in order to clarify the correspondence between the gain and time-constant of the filters and the scaling factor and differentiation/integration constant of the ...
Bertsias, Panagiotis   +5 more
openaire   +6 more sources

Impulsive fractional order integrodifferential equation via fractional operators.

open access: yesPLoS ONE, 2023
In this paper, we establish the existence and uniqueness of the solution to fractional equations abstract integrodifferential equation with impulsive as [Formula: see text] where [Formula: see text] and we used the fixed point theorems due to Banach ...
Ahmad Al-Omari, Hanan Al-Saadi
doaj   +1 more source

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