Recent developments on the realization of fractance device

Abstract A detailed analysis of the recent developments on the realization of fractance device is presented. A fractance device which is used to exhibit fractional order impedance properties finds applications in many branches of science and engineering. Realization of fractance device is a challenging job for the people working in this area. A term fractional order element, constant phase element, fractor, fractance, fractional order differintegrator, fractional order differentiator can be used interchangeably. In general, a fractance device can be realized in two ways. One is using rational approximations and the other is using capacitor physical realization principle. In this paper, an attempt is made to summarize the recent developments on the realization of fractance device. The various mathematical approximations are studied and a comparative analysis is also performed using MATLAB. Fourth order approximation is selected for the realization. The passive and active networks synthesized are simulated using TINA software. Various physical realizations of fractance device, their advantages and disadvantages are mentioned. Experimental results coincide with simulated results.

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Emulation of a constant phase element by utilizing a lattice structure based fractional-order differentiator

AEU - International Journal of Electronics and Communications ◽

10.1016/j.aeue.2020.153418 ◽

2020 ◽

Vol 127 ◽

pp. 153418 ◽

Cited By ~ 3

Author(s):

Vahid Rezazadehshabilouyoliya ◽

Mesut Atasoyu ◽

Serdar Ozoguz

Keyword(s):

Fractional Order ◽

Constant Phase Element ◽

Lattice Structure ◽

Fractional Order Differentiator

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Critical Comparison of Structured Contactors for Adsorption-Based Gas Separations

Annual Review of Chemical and Biomolecular Engineering ◽

10.1146/annurev-chembioeng-060817-084120 ◽

2018 ◽

Vol 9 (1) ◽

pp. 129-152 ◽

Cited By ~ 12

Author(s):

Stephen J.A. DeWitt ◽

Anshuman Sinha ◽

Jayashree Kalyanaraman ◽

Fengyi Zhang ◽

Matthew J. Realff ◽

...

Keyword(s):

State Of The Art ◽

System Modeling ◽

Fixed Bed ◽

Gas Separations ◽

Science And Engineering ◽

Advantages And Disadvantages ◽

Substantial Problem ◽

Temperature Swing ◽

Recent Developments ◽

Temperature Swing Adsorption

Recent advances in adsorptive gas separations have focused on the development of porous materials with high operating capacity and selectivity, useful parameters that provide early guidance during the development of new materials. Although this material-focused work is necessary to advance the state of the art in adsorption science and engineering, a substantial problem remains: how to integrate these materials into a fixed bed to efficiently utilize the separation. Structured sorbent contactors can help manage kinetic and engineering factors associated with the separation, including pressure drop, sorption enthalpy effects, and external heat integration (for temperature swing adsorption, or TSA). In this review, we discuss monoliths and fiber sorbents as the two main classes of structured sorbent contactors; recent developments in their manufacture; advantages and disadvantages of each structure relative to each other and to pellet packed beds; recent developments in system modeling; and finally, critical needs in this area of research.

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Realization of a fractional-order RLC circuit via constant phase element

International Journal of Dynamics and Control ◽

10.1007/s40435-021-00778-4 ◽

2021 ◽

Author(s):

Riccardo Caponetto ◽

Salvatore Graziani ◽

Emanuele Murgano

Keyword(s):

Experimental Data ◽

Carbon Black ◽

Fractional Order ◽

Constant Phase Element ◽

Polymeric Matrix ◽

Fractional Order Systems ◽

New Device ◽

Rlc Circuit ◽

Simulation Results

AbstractIn the paper, a fractional-order RLC circuit is presented. The circuit is realized by using a fractional-order capacitor. This is realized by using carbon black dispersed in a polymeric matrix. Simulation results are compared with the experimental data, confirming the suitability of applying this new device in the circuital implementation of fractional-order systems.

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An efficient approach for solution of fractional-order Helmholtz equations

Advances in Difference Equations ◽

10.1186/s13662-020-03167-x ◽

2021 ◽

Vol 2021 (1) ◽

Author(s):

Nehad Ali Shah ◽

Essam R. El-Zahar ◽

Mona D. Aljoufi ◽

Jae Dong Chung

Keyword(s):

Perturbation Method ◽

Fractional Order ◽

Homotopy Perturbation Method ◽

Hybrid Technique ◽

Science And Engineering ◽

Helmholtz Equations ◽

Transform Method ◽

Homotopy Perturbation ◽

Suggested Technique ◽

Present Technique

AbstractIn this article, a hybrid technique called the homotopy perturbation Elzaki transform method has been implemented to solve fractional-order Helmholtz equations. In the hybrid technique, the Elzaki transform method and the homotopy perturbation method are amalgamated. Three problems are solved to validate and demonstrate the efficacy of the present technique. It is also demonstrated that the results obtained from the suggested technique are in excellent agreement with the results by other techniques. It is shown that the proposed method is efficient, reliable and easy to implement for various related problems of science and engineering.

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