Results 31 to 40 of about 173,800 (157)

Survey Study of Factional Order Controllers

Journal of Engineering, 2020
This is a survey study that presents recent researches concerning factional controllers. It presents several types of fractional order controllers, which are extensions to their integer order counterparts.
Omar Waleed Abdulwahhab, Nizar Hadi Abbas   +1 more
doaj   +1 more source

Fractional order heroin epidemic dynamics

Alexandria Engineering Journal, 2021
Using illicit drugs has been on growth in all over the world especially in the USA, Europe and Asia. It is very harmful to society; it is the fourth foremost cause of death in the United States when taking overdose drug (about the same as motor vehicle ...
Zain Ul Abadin Zafar, Hadi Rezazadeh, Mustafa Inc, Kottakkaran Sooppy Nisar, Tukur A. Sulaiman, Abdullahi Yusuf   +5 more
doaj   +1 more source

Some fundamental properties on the sampling free nabla Laplace transform

, 2020
Discrete fractional order systems have attracted more and more attention in recent years. Nabla Laplace transform is an important tool to deal with the problem of nabla discrete fractional order systems, but there is still much room for its development ...
Chen, YangQuan, Chen, Yuquan, Wang, Yong, Wei, Yiheng   +3 more
core   +1 more source

Fractional-order feedback control of a poorly damped system [PDF]

, 2014
This study presents the design of a fractional-order proportional-integral (FOPI) controller for a mass-spring-damper system which is poorly damped. A model based design technique is used to design a FOPI controller for this system. A good performance of
Chevalier, Amélie, Copot, Cosmin, Copot, Dana, De Keyser, Robain, Ionescu, Clara-Mihaela   +4 more
core   +2 more sources

Fractional Order Generalized Information

Entropy, 2014
This paper formulates a novel expression for entropy inspired in the properties of Fractional Calculus. The characteristics of the generalized fractional entropy are tested both in standard probability distributions and real world data series.
José Tenreiro Machado
doaj   +1 more source

Fractional Order Runge–Kutta Methods

Fractal and Fractional, 2023
This paper presents a new class of fractional order Runge–Kutta (FORK) methods for numerically approximating the solution of fractional differential equations (FDEs).
Farideh Ghoreishi, Rezvan Ghaffari, Nasser Saad   +2 more
doaj   +1 more source

Fractional-Order LC Three-Phase Inverter Using Fractional-Order Virtual Synchronous Generator Control and Adaptive Rotational Inertia Optimization

Machines
The application of fractional calculus in power electronics modeling provides an innovative method for improving inverter performance. This paper presents a three-phase inverter topology with fractional-order LC filter characteristics, analyzes its ...
Junhua Xu, Chunwei Wang, Yue Lan, Bin Liu, Yingheng Li, Yongzeng Xie   +5 more
doaj   +1 more source

Fractional-Order Inductor: Design, Simulation, and Implementation

IEEE Access, 2021
Fractional calculus has tremendous potential in modeling the evolution of complex systems including those with memory. Indeed, fractional-order models are more accurate in approximating non-locally distributed dynamics with short- or long-term memory ...
Li Zhang, Aslihan Kartci, Ahmed Elwakil, Hakan Bagci, Khaled N. Salama   +4 more
doaj   +1 more source

Design and practical implementation of a fractional order proportional integral controller (FOPI) for a poorly damped fractional order process with time delay

, 2019
One of the most popular tuning procedures for the development of fractional order controllers is by imposing frequency domain constraints such as gain crossover frequency, phase margin and iso-damping properties.
Birs, Isabela Roxana, Copot, Dana, Ionescu, Clara-Mihaela, Muresan, Cristina, Nascu, Ioan   +4 more
core   +1 more source

Approach of a class of discontinuous dynamical systems of fractional order: existence of the solutions [PDF]

, 2010
In this letter we are concerned with the possibility to approach the existence of solutions to a class of discontinuous dynamical systems of fractional order.
Aubin J.-P., Diethlem K., MARIUS-F. DANCA, Podlubny I., Samko S. G., Vinagre B. M.   +5 more
core   +1 more source