Results 41 to 50 of about 376,158 (286)

Implementing Discrete-time Fractional-order Controllers [PDF]

open access: yesJournal of Advanced Computational Intelligence and Intelligent Informatics, 2001
The theory of fractional calculus goes back to the beginning of the theory of differential calculus but its inherent complexity postponed the application of the associated concepts. In the last decade the progress in the areas of chaos and fractals revealed subtle relationships with the fractional calculus leading to an increasing interest in the ...
openaire   +2 more sources

Fractional-order iterative learning control for singular fractional- order system: (P) - PDa type [PDF]

open access: yesScientific Technical Review, 2016
Iterative learning control (ILC) is one of the recent topics in control theories and it is suitable for controlling a wider class of mechatronic systems - it is especially suitable for the motion control of robotic systems.
Lazarević Mihailo   +4 more
doaj  

Generalization of Reset Controllers to Fractional Orders

open access: yesMathematics, 2022
Reset control is a simple non-linear control technique that can help overcome the structural limitations of linear control. Fractional control uses the concept of fractional derivatives to expand the range of possibilities when modeling a controller ...
Henrique Paz, Duarte Valério
doaj   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Frequency Control of Interlinked Microgrid System Using Fractional Order Controller

open access: yesElectrica
As renewable energy resource (RES) penetration levels increase within a grid, power networks become more vulnerable to low inertia issues. Additionally, the proliferation of electric vehicles (EVs) has already made a substantial impact on grid dynamics ...
Dharmesh Kumar   +2 more
doaj   +1 more source

Hybrid Systems and Control With Fractional Dynamics (I): Modeling and Analysis

open access: yes, 2014
No mixed research of hybrid and fractional-order systems into a cohesive and multifaceted whole can be found in the literature. This paper focuses on such a synergistic approach of the theories of both branches, which is believed to give additional ...
HosseinNia, S. Hassan   +2 more
core   +1 more source

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

open access: yesFEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Experimental validation of fractional order internal model controller design on buck and boost converter

open access: yesMeasurement + Control, 2021
In this paper, fractional order internal model control technique is formulated for non-ideal dc–dc buck and boost converter. The fractional order internal model control approach integrates the concept of Commande Robuste d’Ordre Non Entier principle for ...
Shivam Jain   +4 more
doaj   +1 more source

Time-Delay Fractional Variable Order Adaptive Synchronization and Anti-Synchronization between Chen and Lorenz Chaotic Systems Using Fractional Order PID Control

open access: yesFractal and Fractional, 2022
In this research work, time-delay adaptive synchronization and adaptive anti-synchronization of chaotic fractional order systems are analyzed via the Caputo fractional derivative, and the prob-lem of synchronization and anti-synchronization of chaotic ...
Joel Perez Padron   +3 more
doaj   +1 more source

Fractional Order Version of the HJB Equation

open access: yes, 2018
We consider an extension of the well-known Hamilton-Jacobi-Bellman (HJB) equation for fractional order dynamical systems in which a generalized performance index is considered for the related optimal control problem.
AsadiZadehShiraz, Mehdi   +2 more
core   +1 more source

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